Upload folder using huggingface_hub (part 8)

.gitattributes

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+pip

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+Metadata-Version: 2.4
+Name: lxml
+Version: 6.1.3
+Summary: Powerful and Pythonic XML processing library combining libxml2/libxslt with the ElementTree API.
+Home-page: https://lxml.de/
+Author: lxml dev team
+Author-email: lxml@lxml.de
+Maintainer: lxml dev team
+Maintainer-email: lxml@lxml.de
+License: BSD-3-Clause
+Project-URL: Source, https://github.com/lxml/lxml
+Project-URL: Bug Tracker, https://bugs.launchpad.net/lxml
+Classifier: Development Status :: 5 - Production/Stable
+Classifier: Intended Audience :: Developers
+Classifier: Intended Audience :: Information Technology
+Classifier: Programming Language :: Cython
+Classifier: Programming Language :: Python :: 3
+Classifier: Programming Language :: Python :: 3.8
+Classifier: Programming Language :: Python :: 3.9
+Classifier: Programming Language :: Python :: 3.10
+Classifier: Programming Language :: Python :: 3.11
+Classifier: Programming Language :: Python :: 3.12
+Classifier: Programming Language :: Python :: 3.13
+Classifier: Programming Language :: Python :: 3.14
+Classifier: Programming Language :: Python :: 3.15
+Classifier: Programming Language :: C
+Classifier: Operating System :: OS Independent
+Classifier: Topic :: Text Processing :: Markup :: HTML
+Classifier: Topic :: Text Processing :: Markup :: XML
+Classifier: Topic :: Software Development :: Libraries :: Python Modules
+Requires-Python: >=3.8
+License-File: LICENSE.txt
+License-File: LICENSES.txt
+Provides-Extra: source
+Provides-Extra: cssselect
+Requires-Dist: cssselect>=0.7; extra == "cssselect"
+Provides-Extra: html5
+Requires-Dist: html5lib; extra == "html5"
+Provides-Extra: htmlsoup
+Requires-Dist: BeautifulSoup4; extra == "htmlsoup"
+Provides-Extra: html-clean
+Requires-Dist: lxml_html_clean; extra == "html-clean"
+Dynamic: author
+Dynamic: author-email
+Dynamic: classifier
+Dynamic: description
+Dynamic: home-page
+Dynamic: license
+Dynamic: license-file
+Dynamic: maintainer
+Dynamic: maintainer-email
+Dynamic: project-url
+Dynamic: provides-extra
+Dynamic: requires-python
+Dynamic: summary
+
+lxml is a Pythonic, mature binding for the libxml2 and libxslt libraries.
+It provides safe and convenient access to these libraries using the
+ElementTree API.
+
+It extends the ElementTree API significantly to offer support for XPath,
+RelaxNG, XML Schema, XSLT, C14N and much more.
+
+To contact the project, go to the `project home page <https://lxml.de/>`_
+or see our bug tracker at https://launchpad.net/lxml
+
+In case you want to use the current in-development version of lxml,
+you can get it from the github repository at
+https://github.com/lxml/lxml .  Note that this requires Cython to
+build the sources, see the build instructions on the project home page.
+
+
+After an official release of a new stable series, bug fixes may become available at
+https://github.com/lxml/lxml/tree/lxml-6.1 .
+Running ``pip install https://github.com/lxml/lxml/archive/refs/heads/lxml-6.1.tar.gz``
+will install the unreleased branch state as soon as a maintenance branch has been established.
+Note that this requires Cython to be installed at an appropriate version for the build.
+
+6.1.3 (2026-09-02)
+==================
+
+Bugs fixed
+----------
+
+* LP#2165901: External parameter entity parsing was allowed by default
+  (with ``resolve_entities="internal"``).
+  Issue found by Tomer Fichman.
+
+

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.venv/lib/python3.12/site-packages/lxml-6.1.3.dist-info/WHEEL

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+Wheel-Version: 1.0
+Generator: setuptools (84.0.0)
+Root-Is-Purelib: false
+Tag: cp312-cp312-manylinux_2_26_x86_64
+Tag: cp312-cp312-manylinux_2_28_x86_64
+

.venv/lib/python3.12/site-packages/lxml-6.1.3.dist-info/licenses/LICENSE.txt

@@ -0,0 +1,31 @@
+BSD 3-Clause License
+
+Copyright (c) 2004 Infrae. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+  1. Redistributions of source code must retain the above copyright
+     notice, this list of conditions and the following disclaimer.
+
+  2. Redistributions in binary form must reproduce the above copyright
+     notice, this list of conditions and the following disclaimer in
+     the documentation and/or other materials provided with the
+     distribution.
+
+  3. Neither the name of Infrae nor the names of its contributors may
+     be used to endorse or promote products derived from this software
+     without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL INFRAE OR
+CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

.venv/lib/python3.12/site-packages/lxml-6.1.3.dist-info/licenses/LICENSES.txt

@@ -0,0 +1,127 @@
+lxml is copyright Infrae and distributed under the BSD license (see
+doc/licenses/BSD.txt), with the following exceptions:
+
+Some code, such a selftest.py, selftest2.py and
+src/lxml/_elementpath.py are derived from ElementTree and
+cElementTree. See doc/licenses/elementtree.txt for the license text.
+Newer versions reuse code from CPython's 'xml.etree' implementation,
+licensed under the PSF-License v2.
+See https://docs.python.org/3/license.html
+
+A copy of difflib is used as part of lxml.html, forked from the CPython
+standard library and licensed under the PSF-License v2.
+See https://docs.python.org/3/license.html
+
+lxml.cssselect and lxml.html are copyright Ian Bicking and distributed
+under the BSD license (see doc/licenses/BSD.txt).
+
+test.py, the test-runner script, is GPL and copyright Shuttleworth
+Foundation. See doc/licenses/GPL.txt. It is believed the unchanged
+inclusion of test.py to run the unit test suite falls under the
+"aggregation" clause of the GPL and thus does not affect the license
+of the rest of the package.
+
+The isoschematron implementation uses several XSL and RelaxNG resources:
+ * The (XML syntax) RelaxNG schema for schematron, copyright International
+   Organization for Standardization (see
+   src/lxml/isoschematron/resources/rng/iso-schematron.rng for the license
+   text)
+ * The skeleton iso-schematron-xlt1 pure-xslt schematron implementation
+   xsl stylesheets, copyright Rick Jelliffe and Academia Sinica Computing
+   Center, Taiwan (see the xsl files here for the license text:
+   src/lxml/isoschematron/resources/xsl/iso-schematron-xslt1/)
+ * The xsd/rng schema schematron extraction xsl transformations are unlicensed
+   and copyright the respective authors as noted (see
+   src/lxml/isoschematron/resources/xsl/RNG2Schtrn.xsl and
+   src/lxml/isoschematron/resources/xsl/XSD2Schtrn.xsl)
+
+
+Binary wheels
+-------------
+
+The officiall distributed binary wheels include bundled versions of the libraries
+zlib, iconv, libxml2, libxslt and libexslt.
+These libraries are linked, used and distributed under their following
+respective licenses:
+
+**zlib**: zlib-license, https://www.zlib.net/zlib_license.html
+
+**iconv**: LGPL 2.1, https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html
+
+**libxml2**: MIT
+
+Except where otherwise noted in the source code (e.g. the files dict.c and
+list.c, which are covered by a similar licence but with different Copyright
+notices) all the files are:
+
+ Copyright (C) 1998-2012 Daniel Veillard.  All Rights Reserved.
+ Copyright (C) The Libxml2 Contributors.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is fur-
+nished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FIT-
+NESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+
+**libxslt**: MIT
+
+ Copyright (C) 2001-2002 Daniel Veillard.  All Rights Reserved.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is fur-
+nished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FIT-
+NESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+DANIEL VEILLARD BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CON-
+NECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+Except as contained in this notice, the name of Daniel Veillard shall not
+be used in advertising or otherwise to promote the sale, use or other deal-
+ings in this Software without prior written authorization from him.
+
+**libexslt**: MIT
+
+ Copyright (C) 2001-2002 Thomas Broyer, Charlie Bozeman and Daniel Veillard.
+ All Rights Reserved.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is fur-
+nished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FIT-
+NESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CON-
+NECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+Except as contained in this notice, the name of the authors shall not
+be used in advertising or otherwise to promote the sale, use or other deal-
+ings in this Software without prior written authorization from him.

.venv/lib/python3.12/site-packages/lxml-6.1.3.dist-info/top_level.txt

@@ -0,0 +1 @@
+lxml

.venv/lib/python3.12/site-packages/lxml/includes/libxslt/xsltlocale.h

@@ -0,0 +1,44 @@
+/*
+ * Summary: Locale handling
+ * Description: Interfaces for locale handling. Needed for language dependent
+ *              sorting.
+ *
+ * Copy: See Copyright for the status of this software.
+ *
+ * Author: Nick Wellnhofer
+ */
+
+#ifndef __XML_XSLTLOCALE_H__
+#define __XML_XSLTLOCALE_H__
+
+#include <libxml/xmlstring.h>
+#include "xsltexports.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+XSLTPUBFUN void * XSLTCALL
+	xsltNewLocale			(const xmlChar *langName,
+					 int lowerFirst);
+XSLTPUBFUN void XSLTCALL
+	xsltFreeLocale			(void *locale);
+XSLTPUBFUN xmlChar * XSLTCALL
+	xsltStrxfrm			(void *locale,
+					 const xmlChar *string);
+XSLTPUBFUN void XSLTCALL
+	xsltFreeLocales			(void);
+
+/* Backward compatibility */
+typedef void *xsltLocale;
+typedef xmlChar xsltLocaleChar;
+XSLTPUBFUN int XSLTCALL
+	xsltLocaleStrcmp		(void *locale,
+					 const xmlChar *str1,
+					 const xmlChar *str2);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __XML_XSLTLOCALE_H__ */

.venv/lib/python3.12/site-packages/lxml/includes/libxslt/xsltutils.h

@@ -0,0 +1,343 @@
+/*
+ * Summary: set of utilities for the XSLT engine
+ * Description: interfaces for the utilities module of the XSLT engine.
+ *              things like message handling, profiling, and other
+ *              generally useful routines.
+ *
+ * Copy: See Copyright for the status of this software.
+ *
+ * Author: Daniel Veillard
+ */
+
+#ifndef __XML_XSLTUTILS_H__
+#define __XML_XSLTUTILS_H__
+
+#include <libxslt/xsltconfig.h>
+#include <libxml/xpath.h>
+#include <libxml/dict.h>
+#include <libxml/xmlerror.h>
+#include "xsltexports.h"
+#include "xsltInternals.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * XSLT_TODO:
+ *
+ * Macro to flag unimplemented blocks.
+ */
+#define XSLT_TODO							\
+    xsltGenericError(xsltGenericErrorContext,				\
+	    "Unimplemented block at %s:%d\n",				\
+            __FILE__, __LINE__);
+
+/**
+ * XSLT_STRANGE:
+ *
+ * Macro to flag that a problem was detected internally.
+ */
+#define XSLT_STRANGE							\
+    xsltGenericError(xsltGenericErrorContext,				\
+	    "Internal error at %s:%d\n",				\
+            __FILE__, __LINE__);
+
+/**
+ * IS_XSLT_ELEM:
+ *
+ * Checks that the element pertains to XSLT namespace.
+ */
+#define IS_XSLT_ELEM(n)							\
+    (((n) != NULL) && ((n)->type == XML_ELEMENT_NODE) &&                \
+     ((n)->ns != NULL) && (xmlStrEqual((n)->ns->href, XSLT_NAMESPACE)))
+
+/**
+ * IS_XSLT_NAME:
+ *
+ * Checks the value of an element in XSLT namespace.
+ */
+#define IS_XSLT_NAME(n, val)						\
+    (xmlStrEqual((n)->name, (const xmlChar *) (val)))
+
+/**
+ * IS_XSLT_REAL_NODE:
+ *
+ * Check that a node is a 'real' one: document, element, text or attribute.
+ */
+#define IS_XSLT_REAL_NODE(n)						\
+    (((n) != NULL) &&							\
+     (((n)->type == XML_ELEMENT_NODE) ||				\
+      ((n)->type == XML_TEXT_NODE) ||					\
+      ((n)->type == XML_CDATA_SECTION_NODE) ||				\
+      ((n)->type == XML_ATTRIBUTE_NODE) ||				\
+      ((n)->type == XML_DOCUMENT_NODE) ||				\
+      ((n)->type == XML_HTML_DOCUMENT_NODE) ||				\
+      ((n)->type == XML_COMMENT_NODE) ||				\
+      ((n)->type == XML_PI_NODE)))
+
+/*
+ * Our own version of namespaced attributes lookup.
+ */
+XSLTPUBFUN xmlChar * XSLTCALL
+		xsltGetNsProp	(xmlNodePtr node,
+				 const xmlChar *name,
+				 const xmlChar *nameSpace);
+XSLTPUBFUN const xmlChar * XSLTCALL
+		xsltGetCNsProp	(xsltStylesheetPtr style,
+				 xmlNodePtr node,
+				 const xmlChar *name,
+				 const xmlChar *nameSpace);
+XSLTPUBFUN int XSLTCALL
+		xsltGetUTF8Char	(const unsigned char *utf,
+				 int *len);
+#ifdef IN_LIBXSLT
+/** DOC_DISABLE */
+XSLTPUBFUN int XSLTCALL
+		xsltGetUTF8CharZ (const unsigned char *utf,
+				  int *len);
+/** DOC_ENABLE */
+#endif
+
+/*
+ * XSLT Debug Tracing Tracing Types
+ */
+typedef enum {
+	XSLT_TRACE_ALL =		-1,
+	XSLT_TRACE_NONE =		0,
+	XSLT_TRACE_COPY_TEXT =		1<<0,
+	XSLT_TRACE_PROCESS_NODE =	1<<1,
+	XSLT_TRACE_APPLY_TEMPLATE =	1<<2,
+	XSLT_TRACE_COPY =		1<<3,
+	XSLT_TRACE_COMMENT =		1<<4,
+	XSLT_TRACE_PI =			1<<5,
+	XSLT_TRACE_COPY_OF =		1<<6,
+	XSLT_TRACE_VALUE_OF =		1<<7,
+	XSLT_TRACE_CALL_TEMPLATE =	1<<8,
+	XSLT_TRACE_APPLY_TEMPLATES =	1<<9,
+	XSLT_TRACE_CHOOSE =		1<<10,
+	XSLT_TRACE_IF =			1<<11,
+	XSLT_TRACE_FOR_EACH =		1<<12,
+	XSLT_TRACE_STRIP_SPACES =	1<<13,
+	XSLT_TRACE_TEMPLATES =		1<<14,
+	XSLT_TRACE_KEYS =		1<<15,
+	XSLT_TRACE_VARIABLES =		1<<16
+} xsltDebugTraceCodes;
+
+/**
+ * XSLT_TRACE:
+ *
+ * Control the type of xsl debugtrace messages emitted.
+ */
+#define XSLT_TRACE(ctxt,code,call)	\
+	if (ctxt->traceCode && (*(ctxt->traceCode) & code)) \
+	    call
+
+XSLTPUBFUN void XSLTCALL
+		xsltDebugSetDefaultTrace(xsltDebugTraceCodes val);
+XSLTPUBFUN xsltDebugTraceCodes XSLTCALL
+		xsltDebugGetDefaultTrace(void);
+
+/*
+ * XSLT specific error and debug reporting functions.
+ */
+XSLTPUBVAR xmlGenericErrorFunc xsltGenericError;
+XSLTPUBVAR void *xsltGenericErrorContext;
+XSLTPUBVAR xmlGenericErrorFunc xsltGenericDebug;
+XSLTPUBVAR void *xsltGenericDebugContext;
+
+XSLTPUBFUN void XSLTCALL
+		xsltPrintErrorContext		(xsltTransformContextPtr ctxt,
+	                                         xsltStylesheetPtr style,
+						 xmlNodePtr node);
+XSLTPUBFUN void XSLTCALL
+		xsltMessage			(xsltTransformContextPtr ctxt,
+						 xmlNodePtr node,
+						 xmlNodePtr inst);
+XSLTPUBFUN void XSLTCALL
+		xsltSetGenericErrorFunc		(void *ctx,
+						 xmlGenericErrorFunc handler);
+XSLTPUBFUN void XSLTCALL
+		xsltSetGenericDebugFunc		(void *ctx,
+						 xmlGenericErrorFunc handler);
+XSLTPUBFUN void XSLTCALL
+		xsltSetTransformErrorFunc	(xsltTransformContextPtr ctxt,
+						 void *ctx,
+						 xmlGenericErrorFunc handler);
+XSLTPUBFUN void XSLTCALL
+		xsltTransformError		(xsltTransformContextPtr ctxt,
+						 xsltStylesheetPtr style,
+						 xmlNodePtr node,
+						 const char *msg,
+						 ...) LIBXSLT_ATTR_FORMAT(4,5);
+
+XSLTPUBFUN int XSLTCALL
+		xsltSetCtxtParseOptions		(xsltTransformContextPtr ctxt,
+						 int options);
+/*
+ * Sorting.
+ */
+
+XSLTPUBFUN void XSLTCALL
+		xsltDocumentSortFunction	(xmlNodeSetPtr list);
+XSLTPUBFUN void XSLTCALL
+		xsltSetSortFunc			(xsltSortFunc handler);
+XSLTPUBFUN void XSLTCALL
+		xsltSetCtxtSortFunc		(xsltTransformContextPtr ctxt,
+						 xsltSortFunc handler);
+XSLTPUBFUN void XSLTCALL
+		xsltSetCtxtLocaleHandlers	(xsltTransformContextPtr ctxt,
+						 xsltNewLocaleFunc newLocale,
+						 xsltFreeLocaleFunc freeLocale,
+						 xsltGenSortKeyFunc genSortKey);
+XSLTPUBFUN void XSLTCALL
+		xsltDefaultSortFunction		(xsltTransformContextPtr ctxt,
+						 xmlNodePtr *sorts,
+						 int nbsorts);
+XSLTPUBFUN void XSLTCALL
+		xsltDoSortFunction		(xsltTransformContextPtr ctxt,
+						 xmlNodePtr * sorts,
+						 int nbsorts);
+XSLTPUBFUN xmlXPathObjectPtr * XSLTCALL
+		xsltComputeSortResult		(xsltTransformContextPtr ctxt,
+						 xmlNodePtr sort);
+
+/*
+ * QNames handling.
+ */
+
+XSLTPUBFUN const xmlChar * XSLTCALL
+		xsltSplitQName			(xmlDictPtr dict,
+						 const xmlChar *name,
+						 const xmlChar **prefix);
+XSLTPUBFUN const xmlChar * XSLTCALL
+		xsltGetQNameURI			(xmlNodePtr node,
+						 xmlChar **name);
+
+XSLTPUBFUN const xmlChar * XSLTCALL
+		xsltGetQNameURI2		(xsltStylesheetPtr style,
+						 xmlNodePtr node,
+						 const xmlChar **name);
+
+/*
+ * Output, reuse libxml I/O buffers.
+ */
+XSLTPUBFUN int XSLTCALL
+		xsltSaveResultTo		(xmlOutputBufferPtr buf,
+						 xmlDocPtr result,
+						 xsltStylesheetPtr style);
+XSLTPUBFUN int XSLTCALL
+		xsltSaveResultToFilename	(const char *URI,
+						 xmlDocPtr result,
+						 xsltStylesheetPtr style,
+						 int compression);
+XSLTPUBFUN int XSLTCALL
+		xsltSaveResultToFile		(FILE *file,
+						 xmlDocPtr result,
+						 xsltStylesheetPtr style);
+XSLTPUBFUN int XSLTCALL
+		xsltSaveResultToFd		(int fd,
+						 xmlDocPtr result,
+						 xsltStylesheetPtr style);
+XSLTPUBFUN int XSLTCALL
+		xsltSaveResultToString          (xmlChar **doc_txt_ptr,
+                                                 int * doc_txt_len,
+                                                 xmlDocPtr result,
+                                                 xsltStylesheetPtr style);
+
+/*
+ * XPath interface
+ */
+XSLTPUBFUN xmlXPathCompExprPtr XSLTCALL
+		xsltXPathCompile		(xsltStylesheetPtr style,
+						 const xmlChar *str);
+XSLTPUBFUN xmlXPathCompExprPtr XSLTCALL
+		xsltXPathCompileFlags		(xsltStylesheetPtr style,
+						 const xmlChar *str,
+						 int flags);
+
+#ifdef IN_LIBXSLT
+/** DOC_DISABLE */
+#define XSLT_SOURCE_NODE_MASK       15u
+#define XSLT_SOURCE_NODE_HAS_KEY    1u
+#define XSLT_SOURCE_NODE_HAS_ID     2u
+int
+xsltGetSourceNodeFlags(xmlNodePtr node);
+int
+xsltSetSourceNodeFlags(xsltTransformContextPtr ctxt, xmlNodePtr node,
+                       int flags);
+int
+xsltClearSourceNodeFlags(xmlNodePtr node, int flags);
+void **
+xsltGetPSVIPtr(xmlNodePtr cur);
+/** DOC_ENABLE */
+#endif
+
+#ifdef WITH_PROFILER
+/*
+ * Profiling.
+ */
+XSLTPUBFUN void XSLTCALL
+		xsltSaveProfiling		(xsltTransformContextPtr ctxt,
+						 FILE *output);
+XSLTPUBFUN xmlDocPtr XSLTCALL
+		xsltGetProfileInformation	(xsltTransformContextPtr ctxt);
+
+XSLTPUBFUN long XSLTCALL
+		xsltTimestamp			(void);
+XSLTPUBFUN void XSLTCALL
+		xsltCalibrateAdjust		(long delta);
+#endif
+
+/**
+ * XSLT_TIMESTAMP_TICS_PER_SEC:
+ *
+ * Sampling precision for profiling
+ */
+#define XSLT_TIMESTAMP_TICS_PER_SEC 100000l
+
+/*
+ * Hooks for the debugger.
+ */
+
+typedef enum {
+    XSLT_DEBUG_NONE = 0, /* no debugging allowed */
+    XSLT_DEBUG_INIT,
+    XSLT_DEBUG_STEP,
+    XSLT_DEBUG_STEPOUT,
+    XSLT_DEBUG_NEXT,
+    XSLT_DEBUG_STOP,
+    XSLT_DEBUG_CONT,
+    XSLT_DEBUG_RUN,
+    XSLT_DEBUG_RUN_RESTART,
+    XSLT_DEBUG_QUIT
+} xsltDebugStatusCodes;
+
+XSLTPUBVAR int xslDebugStatus;
+
+typedef void (*xsltHandleDebuggerCallback) (xmlNodePtr cur, xmlNodePtr node,
+			xsltTemplatePtr templ, xsltTransformContextPtr ctxt);
+typedef int (*xsltAddCallCallback) (xsltTemplatePtr templ, xmlNodePtr source);
+typedef void (*xsltDropCallCallback) (void);
+
+XSLTPUBFUN int XSLTCALL
+		xsltGetDebuggerStatus		(void);
+#ifdef WITH_DEBUGGER
+XSLTPUBFUN void XSLTCALL
+		xsltSetDebuggerStatus		(int value);
+XSLTPUBFUN int XSLTCALL
+		xsltSetDebuggerCallbacks	(int no, void *block);
+XSLTPUBFUN int XSLTCALL
+		xslAddCall			(xsltTemplatePtr templ,
+						 xmlNodePtr source);
+XSLTPUBFUN void XSLTCALL
+		xslDropCall			(void);
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __XML_XSLTUTILS_H__ */
+
+

.venv/lib/python3.12/site-packages/lxml/includes/lxml-version.h

@@ -0,0 +1,3 @@
+#ifndef LXML_VERSION_STRING
+#define LXML_VERSION_STRING "6.1.3"
+#endif

.venv/lib/python3.12/site-packages/lxml/includes/relaxng.pxd

@@ -0,0 +1,64 @@
+from lxml.includes.tree cimport xmlDoc
+from lxml.includes.xmlerror cimport xmlStructuredErrorFunc
+
+cdef extern from "libxml/relaxng.h" nogil:
+    ctypedef struct xmlRelaxNG
+    ctypedef struct xmlRelaxNGParserCtxt
+    
+    ctypedef struct xmlRelaxNGValidCtxt
+    
+    ctypedef enum xmlRelaxNGValidErr:
+        XML_RELAXNG_OK = 0
+        XML_RELAXNG_ERR_MEMORY = 1
+        XML_RELAXNG_ERR_TYPE = 2
+        XML_RELAXNG_ERR_TYPEVAL = 3
+        XML_RELAXNG_ERR_DUPID = 4
+        XML_RELAXNG_ERR_TYPECMP = 5
+        XML_RELAXNG_ERR_NOSTATE = 6
+        XML_RELAXNG_ERR_NODEFINE = 7
+        XML_RELAXNG_ERR_LISTEXTRA = 8
+        XML_RELAXNG_ERR_LISTEMPTY = 9
+        XML_RELAXNG_ERR_INTERNODATA = 10
+        XML_RELAXNG_ERR_INTERSEQ = 11
+        XML_RELAXNG_ERR_INTEREXTRA = 12
+        XML_RELAXNG_ERR_ELEMNAME = 13
+        XML_RELAXNG_ERR_ATTRNAME = 14
+        XML_RELAXNG_ERR_ELEMNONS = 15
+        XML_RELAXNG_ERR_ATTRNONS = 16
+        XML_RELAXNG_ERR_ELEMWRONGNS = 17
+        XML_RELAXNG_ERR_ATTRWRONGNS = 18
+        XML_RELAXNG_ERR_ELEMEXTRANS = 19
+        XML_RELAXNG_ERR_ATTREXTRANS = 20
+        XML_RELAXNG_ERR_ELEMNOTEMPTY = 21
+        XML_RELAXNG_ERR_NOELEM = 22
+        XML_RELAXNG_ERR_NOTELEM = 23
+        XML_RELAXNG_ERR_ATTRVALID = 24
+        XML_RELAXNG_ERR_CONTENTVALID = 25
+        XML_RELAXNG_ERR_EXTRACONTENT = 26
+        XML_RELAXNG_ERR_INVALIDATTR = 27
+        XML_RELAXNG_ERR_DATAELEM = 28
+        XML_RELAXNG_ERR_VALELEM = 29
+        XML_RELAXNG_ERR_LISTELEM = 30
+        XML_RELAXNG_ERR_DATATYPE = 31
+        XML_RELAXNG_ERR_VALUE = 32
+        XML_RELAXNG_ERR_LIST = 33
+        XML_RELAXNG_ERR_NOGRAMMAR = 34
+        XML_RELAXNG_ERR_EXTRADATA = 35
+        XML_RELAXNG_ERR_LACKDATA = 36
+        XML_RELAXNG_ERR_INTERNAL = 37
+        XML_RELAXNG_ERR_ELEMWRONG = 38
+        XML_RELAXNG_ERR_TEXTWRONG = 39
+        
+    cdef xmlRelaxNGValidCtxt* xmlRelaxNGNewValidCtxt(xmlRelaxNG* schema)
+    cdef int xmlRelaxNGValidateDoc(xmlRelaxNGValidCtxt* ctxt, xmlDoc* doc)
+    cdef xmlRelaxNG* xmlRelaxNGParse(xmlRelaxNGParserCtxt* ctxt)
+    cdef xmlRelaxNGParserCtxt* xmlRelaxNGNewParserCtxt(char* URL)
+    cdef xmlRelaxNGParserCtxt* xmlRelaxNGNewDocParserCtxt(xmlDoc* doc)
+    cdef void xmlRelaxNGFree(xmlRelaxNG* schema)
+    cdef void xmlRelaxNGFreeParserCtxt(xmlRelaxNGParserCtxt* ctxt)
+    cdef void xmlRelaxNGFreeValidCtxt(xmlRelaxNGValidCtxt* ctxt)
+
+    cdef void xmlRelaxNGSetValidStructuredErrors(
+        xmlRelaxNGValidCtxt* ctxt, xmlStructuredErrorFunc serror, void *ctx)
+    cdef void xmlRelaxNGSetParserStructuredErrors(
+        xmlRelaxNGParserCtxt* ctxt, xmlStructuredErrorFunc serror, void *ctx)

.venv/lib/python3.12/site-packages/lxml/includes/schematron.pxd

@@ -0,0 +1,34 @@
+from lxml.includes cimport xmlerror
+from lxml.includes.tree cimport xmlDoc
+
+cdef extern from "libxml/schematron.h" nogil:
+    ctypedef struct xmlSchematron
+    ctypedef struct xmlSchematronParserCtxt
+    ctypedef struct xmlSchematronValidCtxt
+
+    ctypedef enum xmlSchematronValidOptions:
+        XML_SCHEMATRON_OUT_QUIET     =    1 # quiet no report
+        XML_SCHEMATRON_OUT_TEXT      =    2 # build a textual report
+        XML_SCHEMATRON_OUT_XML       =    4 # output SVRL
+        XML_SCHEMATRON_OUT_ERROR     =    8 # output via xmlStructuredErrorFunc
+        XML_SCHEMATRON_OUT_FILE      =  256 # output to a file descriptor
+        XML_SCHEMATRON_OUT_BUFFER    =  512 # output to a buffer
+        XML_SCHEMATRON_OUT_IO        = 1024 # output to I/O mechanism
+
+    cdef xmlSchematronParserCtxt* xmlSchematronNewDocParserCtxt(
+        xmlDoc* doc)
+    cdef xmlSchematronParserCtxt* xmlSchematronNewParserCtxt(
+        char* filename) nogil
+    cdef xmlSchematronValidCtxt* xmlSchematronNewValidCtxt(
+        xmlSchematron* schema, int options)
+
+    cdef xmlSchematron* xmlSchematronParse(xmlSchematronParserCtxt* ctxt)
+    cdef int xmlSchematronValidateDoc(xmlSchematronValidCtxt* ctxt,
+                                      xmlDoc* instance)
+
+    cdef void xmlSchematronFreeParserCtxt(xmlSchematronParserCtxt* ctxt)
+    cdef void xmlSchematronFreeValidCtxt(xmlSchematronValidCtxt* ctxt)
+    cdef void xmlSchematronFree(xmlSchematron* schema)
+    cdef void xmlSchematronSetValidStructuredErrors(
+        xmlSchematronValidCtxt* ctxt,
+        xmlerror.xmlStructuredErrorFunc error_func, void *data)

.venv/lib/python3.12/site-packages/lxml/includes/tree.pxd

@@ -0,0 +1,492 @@
+from libc cimport stdio
+from libc.string cimport const_char, const_uchar
+
+cdef extern from "lxml-version.h":
+    # deprecated declaration, use etreepublic.pxd instead
+    cdef char* LXML_VERSION_STRING
+
+cdef extern from "libxml/xmlversion.h":
+    const char* xmlParserVersion
+    int LIBXML_VERSION
+
+
+cdef extern from "libxml/xmlstring.h" nogil:
+    ctypedef unsigned char xmlChar
+    ctypedef const xmlChar const_xmlChar "const xmlChar"
+    cdef int xmlStrlen(const_xmlChar* str)
+    cdef xmlChar* xmlStrdup(const_xmlChar* cur)
+    cdef int xmlStrncmp(const_xmlChar* str1, const_xmlChar* str2, int length)
+    cdef int xmlStrcmp(const_xmlChar* str1, const_xmlChar* str2)
+    cdef int xmlStrcasecmp(const xmlChar *str1, const xmlChar *str2)
+    cdef const_xmlChar* xmlStrstr(const_xmlChar* str1, const_xmlChar* str2)
+    cdef const_xmlChar* xmlStrchr(const_xmlChar* str1, xmlChar ch)
+    cdef const_xmlChar* _xcstr "(const xmlChar*)PyBytes_AS_STRING" (object s)
+
+cdef extern from "libxml/encoding.h" nogil:
+    ctypedef enum xmlCharEncoding:
+        XML_CHAR_ENCODING_ERROR = -1 # No char encoding detected
+        XML_CHAR_ENCODING_NONE = 0 # No char encoding detected
+        XML_CHAR_ENCODING_UTF8 = 1 # UTF-8
+        XML_CHAR_ENCODING_UTF16LE = 2 # UTF-16 little endian
+        XML_CHAR_ENCODING_UTF16BE = 3 # UTF-16 big endian
+        XML_CHAR_ENCODING_UCS4LE = 4 # UCS-4 little endian
+        XML_CHAR_ENCODING_UCS4BE = 5 # UCS-4 big endian
+        XML_CHAR_ENCODING_EBCDIC = 6 # EBCDIC uh!
+        XML_CHAR_ENCODING_UCS4_2143 = 7 # UCS-4 unusual ordering
+        XML_CHAR_ENCODING_UCS4_3412 = 8 # UCS-4 unusual ordering
+        XML_CHAR_ENCODING_UCS2 = 9 # UCS-2
+        XML_CHAR_ENCODING_8859_1 = 10 # ISO-8859-1 ISO Latin 1
+        XML_CHAR_ENCODING_8859_2 = 11 # ISO-8859-2 ISO Latin 2
+        XML_CHAR_ENCODING_8859_3 = 12 # ISO-8859-3
+        XML_CHAR_ENCODING_8859_4 = 13 # ISO-8859-4
+        XML_CHAR_ENCODING_8859_5 = 14 # ISO-8859-5
+        XML_CHAR_ENCODING_8859_6 = 15 # ISO-8859-6
+        XML_CHAR_ENCODING_8859_7 = 16 # ISO-8859-7
+        XML_CHAR_ENCODING_8859_8 = 17 # ISO-8859-8
+        XML_CHAR_ENCODING_8859_9 = 18 # ISO-8859-9
+        XML_CHAR_ENCODING_2022_JP = 19 # ISO-2022-JP
+        XML_CHAR_ENCODING_SHIFT_JIS = 20 # Shift_JIS
+        XML_CHAR_ENCODING_EUC_JP = 21 # EUC-JP
+        XML_CHAR_ENCODING_ASCII = 22 # pure ASCII
+
+    ctypedef struct xmlCharEncodingHandler:
+        char* name
+
+    cdef xmlCharEncodingHandler* xmlFindCharEncodingHandler(char* name)
+    cdef xmlCharEncodingHandler* xmlGetCharEncodingHandler(
+        xmlCharEncoding enc)
+    cdef int xmlCharEncCloseFunc(xmlCharEncodingHandler* handler)
+    cdef xmlCharEncoding xmlDetectCharEncoding(const_xmlChar* text, int len)
+    cdef const_char* xmlGetCharEncodingName(xmlCharEncoding enc)
+    cdef xmlCharEncoding xmlParseCharEncoding(char* name)
+    ctypedef int (*xmlCharEncodingOutputFunc)(
+            unsigned char *out_buf, int *outlen, const_uchar *in_buf, int *inlen)
+
+cdef extern from "libxml/chvalid.h" nogil:
+    cdef int xmlIsChar_ch(char c)
+    cdef int xmlIsCharQ(int ch)
+
+cdef extern from "libxml/hash.h":
+    ctypedef struct xmlHashTable
+    ctypedef void (*xmlHashScanner)(void* payload, void* data, const_xmlChar* name) noexcept  # may require GIL!
+    void xmlHashScan(xmlHashTable* table, xmlHashScanner f, void* data) nogil
+    void* xmlHashLookup(xmlHashTable* table, const_xmlChar* name) nogil
+    ctypedef void (*xmlHashDeallocator)(void *payload, xmlChar *name) noexcept
+    cdef xmlHashTable* xmlHashCreate(int size) nogil
+    cdef xmlHashTable* xmlHashCreateDict(int size, xmlDict *dict) nogil
+    cdef int xmlHashSize(xmlHashTable* table) nogil
+    cdef void xmlHashFree(xmlHashTable* table, xmlHashDeallocator f) nogil
+
+cdef extern from * nogil: # actually "libxml/dict.h"
+    # libxml/dict.h appears to be broken to include in C
+    ctypedef struct xmlDict
+    cdef const_xmlChar* xmlDictLookup(xmlDict* dict, const_xmlChar* name, int len)
+    cdef const_xmlChar* xmlDictExists(xmlDict* dict, const_xmlChar* name, int len)
+    cdef int xmlDictOwns(xmlDict* dict, const_xmlChar* name)
+    cdef size_t xmlDictSize(xmlDict* dict)
+
+cdef extern from "libxml/tree.h" nogil:
+    ctypedef struct xmlDoc
+    ctypedef struct xmlAttr
+    ctypedef struct xmlNotationTable
+
+    ctypedef enum xmlElementType:
+        XML_ELEMENT_NODE=           1
+        XML_ATTRIBUTE_NODE=         2
+        XML_TEXT_NODE=              3
+        XML_CDATA_SECTION_NODE=     4
+        XML_ENTITY_REF_NODE=        5
+        XML_ENTITY_NODE=            6
+        XML_PI_NODE=                7
+        XML_COMMENT_NODE=           8
+        XML_DOCUMENT_NODE=          9
+        XML_DOCUMENT_TYPE_NODE=     10
+        XML_DOCUMENT_FRAG_NODE=     11
+        XML_NOTATION_NODE=          12
+        XML_HTML_DOCUMENT_NODE=     13
+        XML_DTD_NODE=               14
+        XML_ELEMENT_DECL=           15
+        XML_ATTRIBUTE_DECL=         16
+        XML_ENTITY_DECL=            17
+        XML_NAMESPACE_DECL=         18
+        XML_XINCLUDE_START=         19
+        XML_XINCLUDE_END=           20
+
+    ctypedef enum xmlElementTypeVal:
+        XML_ELEMENT_TYPE_UNDEFINED= 0
+        XML_ELEMENT_TYPE_EMPTY=     1
+        XML_ELEMENT_TYPE_ANY=       2
+        XML_ELEMENT_TYPE_MIXED=     3
+        XML_ELEMENT_TYPE_ELEMENT=   4
+
+    ctypedef enum xmlElementContentType:
+        XML_ELEMENT_CONTENT_PCDATA=  1
+        XML_ELEMENT_CONTENT_ELEMENT= 2
+        XML_ELEMENT_CONTENT_SEQ=     3
+        XML_ELEMENT_CONTENT_OR=      4
+
+    ctypedef enum xmlElementContentOccur:
+        XML_ELEMENT_CONTENT_ONCE= 1
+        XML_ELEMENT_CONTENT_OPT=  2
+        XML_ELEMENT_CONTENT_MULT= 3
+        XML_ELEMENT_CONTENT_PLUS= 4
+
+    ctypedef enum xmlAttributeType:
+        XML_ATTRIBUTE_CDATA =      1
+        XML_ATTRIBUTE_ID=          2
+        XML_ATTRIBUTE_IDREF=       3
+        XML_ATTRIBUTE_IDREFS=      4
+        XML_ATTRIBUTE_ENTITY=      5
+        XML_ATTRIBUTE_ENTITIES=    6
+        XML_ATTRIBUTE_NMTOKEN=     7
+        XML_ATTRIBUTE_NMTOKENS=    8
+        XML_ATTRIBUTE_ENUMERATION= 9
+        XML_ATTRIBUTE_NOTATION=    10
+
+    ctypedef enum xmlAttributeDefault:
+        XML_ATTRIBUTE_NONE=     1
+        XML_ATTRIBUTE_REQUIRED= 2
+        XML_ATTRIBUTE_IMPLIED=  3
+        XML_ATTRIBUTE_FIXED=    4
+
+    ctypedef enum xmlEntityType:
+        XML_INTERNAL_GENERAL_ENTITY=          1
+        XML_EXTERNAL_GENERAL_PARSED_ENTITY=   2
+        XML_EXTERNAL_GENERAL_UNPARSED_ENTITY= 3
+        XML_INTERNAL_PARAMETER_ENTITY=        4
+        XML_EXTERNAL_PARAMETER_ENTITY=        5
+        XML_INTERNAL_PREDEFINED_ENTITY=       6
+
+    ctypedef enum xmlDocProperties:
+        XML_DOC_WELLFORMED          = 1    # /* document is XML well formed */
+        XML_DOC_NSVALID             = 2    # /* document is Namespace valid */
+        XML_DOC_OLD10               = 4    # /* parsed with old XML-1.0 parser */
+        XML_DOC_DTDVALID            = 8    # /* DTD validation was successful */
+        XML_DOC_XINCLUDE            = 16   # /* XInclude substitution was done */
+        XML_DOC_USERBUILT           = 32   # /* Document was built using the API
+                                           #    and not by parsing an instance */
+        XML_DOC_INTERNAL            = 64   # /* built for internal processing */
+        XML_DOC_HTML                = 128  # /* parsed or built HTML document */
+
+    ctypedef struct xmlNs:
+        const_xmlChar* href
+        const_xmlChar* prefix
+        xmlNs* next
+
+    ctypedef struct xmlNode:
+        void* _private
+        xmlElementType   type
+        const_xmlChar* name
+        xmlNode* children
+        xmlNode* last
+        xmlNode* parent
+        xmlNode* next
+        xmlNode* prev
+        xmlDoc* doc
+        xmlChar* content
+        xmlAttr* properties
+        xmlNs* ns
+        xmlNs* nsDef
+        unsigned short line
+
+    ctypedef struct xmlElementContent:
+        xmlElementContentType type
+        xmlElementContentOccur ocur
+        const_xmlChar *name
+        xmlElementContent *c1
+        xmlElementContent *c2
+        xmlElementContent *parent
+        const_xmlChar *prefix
+
+    ctypedef struct xmlEnumeration:
+        xmlEnumeration *next
+        const_xmlChar *name
+
+    ctypedef struct xmlAttribute:
+        void* _private
+        xmlElementType type
+        const_xmlChar* name
+        xmlNode* children
+        xmlNode* last
+        xmlDtd* parent
+        xmlNode* next
+        xmlNode* prev
+        xmlDoc* doc
+        xmlAttribute* nexth
+        xmlAttributeType atype
+        xmlAttributeDefault def_ "def"
+        const_xmlChar* defaultValue
+        xmlEnumeration* tree
+        const_xmlChar* prefix
+        const_xmlChar* elem
+
+    ctypedef struct xmlElement:
+        void* _private
+        xmlElementType   type
+        const_xmlChar* name
+        xmlNode* children
+        xmlNode* last
+        xmlNode* parent
+        xmlNode* next
+        xmlNode* prev
+        xmlDoc* doc
+        xmlElementTypeVal etype
+        xmlElementContent* content
+        xmlAttribute* attributes
+        const_xmlChar* prefix
+        void *contModel
+
+    ctypedef struct xmlEntity:
+        void* _private
+        xmlElementType type
+        const_xmlChar* name
+        xmlNode* children
+        xmlNode* last
+        xmlDtd* parent
+        xmlNode* next
+        xmlNode* prev
+        xmlDoc* doc
+        xmlChar* orig
+        xmlChar* content
+        int length
+        xmlEntityType etype
+        const_xmlChar* ExternalID
+        const_xmlChar* SystemID
+        xmlEntity* nexte
+        const_xmlChar* URI
+        int owner
+        int checked
+
+    ctypedef struct xmlDtd:
+        const_xmlChar* name
+        const_xmlChar* ExternalID
+        const_xmlChar* SystemID
+        void* notations
+        void* entities
+        void* pentities
+        void* attributes
+        void* elements
+        xmlNode* children
+        xmlNode* last
+        xmlDoc* doc
+
+    ctypedef struct xmlDoc:
+        xmlElementType type
+        char* name
+        xmlNode* children
+        xmlNode* last
+        xmlNode* parent
+        xmlNode* next
+        xmlNode* prev
+        xmlDoc* doc
+        xmlDict* dict
+        xmlHashTable* ids
+        int standalone
+        const_xmlChar* version
+        const_xmlChar* encoding
+        const_xmlChar* URL
+        void* _private
+        xmlDtd* intSubset
+        xmlDtd* extSubset
+        int properties
+
+    ctypedef struct xmlAttr:
+        void* _private
+        xmlElementType type
+        const_xmlChar* name
+        xmlNode* children
+        xmlNode* last
+        xmlNode* parent
+        xmlAttr* next
+        xmlAttr* prev
+        xmlDoc* doc
+        xmlNs* ns
+        xmlAttributeType atype
+
+    ctypedef struct xmlID:
+        const_xmlChar* value
+        const_xmlChar* name
+        xmlAttr* attr
+        xmlDoc* doc
+
+    ctypedef struct xmlBuffer
+
+    ctypedef struct xmlBuf   # new in libxml2 2.9
+
+    ctypedef struct xmlOutputBuffer:
+        xmlBuf* buffer
+        xmlBuf* conv
+        int error
+
+    const_xmlChar* XML_XML_NAMESPACE
+
+    cdef void xmlFreeDoc(xmlDoc* cur)
+    cdef void xmlFreeDtd(xmlDtd* cur)
+    cdef void xmlFreeNode(xmlNode* cur)
+    cdef void xmlFreeNsList(xmlNs* ns)
+    cdef void xmlFreeNs(xmlNs* ns)
+    cdef void xmlFree(void* buf)
+
+    cdef xmlNode* xmlNewNode(xmlNs* ns, const_xmlChar* name)
+    cdef xmlNode* xmlNewDocText(xmlDoc* doc, const_xmlChar* content)
+    cdef xmlNode* xmlNewDocComment(xmlDoc* doc, const_xmlChar* content)
+    cdef xmlNode* xmlNewDocPI(xmlDoc* doc, const_xmlChar* name, const_xmlChar* content)
+    cdef xmlNode* xmlNewReference(xmlDoc* doc, const_xmlChar* name)
+    cdef xmlNode* xmlNewCDataBlock(xmlDoc* doc, const_xmlChar* text, int len)
+    cdef xmlNs* xmlNewNs(xmlNode* node, const_xmlChar* href, const_xmlChar* prefix)
+    cdef xmlNode* xmlAddChild(xmlNode* parent, xmlNode* cur)
+    cdef xmlNode* xmlReplaceNode(xmlNode* old, xmlNode* cur)
+    cdef xmlNode* xmlAddPrevSibling(xmlNode* cur, xmlNode* elem)
+    cdef xmlNode* xmlAddNextSibling(xmlNode* cur, xmlNode* elem)
+    cdef xmlNode* xmlNewDocNode(xmlDoc* doc, xmlNs* ns,
+                                const_xmlChar* name, const_xmlChar* content)
+    cdef xmlDoc* xmlNewDoc(const_xmlChar* version)
+    cdef xmlAttr* xmlNewProp(xmlNode* node, const_xmlChar* name, const_xmlChar* value)
+    cdef xmlAttr* xmlNewNsProp(xmlNode* node, xmlNs* ns,
+                               const_xmlChar* name, const_xmlChar* value)
+    cdef xmlChar* xmlGetNoNsProp(xmlNode* node, const_xmlChar* name)
+    cdef xmlChar* xmlGetNsProp(xmlNode* node, const_xmlChar* name, const_xmlChar* nameSpace)
+    cdef void xmlSetNs(xmlNode* node, xmlNs* ns)
+    cdef xmlAttr* xmlSetProp(xmlNode* node, const_xmlChar* name, const_xmlChar* value)
+    cdef xmlAttr* xmlSetNsProp(xmlNode* node, xmlNs* ns,
+                               const_xmlChar* name, const_xmlChar* value)
+    cdef int xmlRemoveID(xmlDoc* doc, xmlAttr* cur)
+    cdef int xmlRemoveProp(xmlAttr* cur)
+    cdef void xmlFreePropList(xmlAttr* cur)
+    cdef xmlChar* xmlGetNodePath(xmlNode* node)
+    cdef void xmlDocDumpMemory(xmlDoc* cur, char** mem, int* size)
+    cdef void xmlDocDumpMemoryEnc(xmlDoc* cur, char** mem, int* size,
+                                  char* encoding)
+    cdef int xmlSaveFileTo(xmlOutputBuffer* out, xmlDoc* cur,
+                           char* encoding)
+
+    cdef void xmlUnlinkNode(xmlNode* cur)
+    cdef xmlNode* xmlDocSetRootElement(xmlDoc* doc, xmlNode* root)
+    cdef xmlNode* xmlDocGetRootElement(xmlDoc* doc)
+    cdef void xmlSetTreeDoc(xmlNode* tree, xmlDoc* doc)
+    cdef xmlAttr* xmlHasProp(xmlNode* node, const_xmlChar* name)
+    cdef xmlAttr* xmlHasNsProp(xmlNode* node, const_xmlChar* name, const_xmlChar* nameSpace)
+    cdef xmlChar* xmlNodeGetContent(xmlNode* cur)
+    cdef int xmlNodeBufGetContent(xmlBuffer* buffer, xmlNode* cur)
+    cdef xmlNs* xmlSearchNs(xmlDoc* doc, xmlNode* node, const_xmlChar* prefix)
+    cdef xmlNs* xmlSearchNsByHref(xmlDoc* doc, xmlNode* node, const_xmlChar* href)
+    cdef int xmlIsBlankNode(xmlNode* node)
+    cdef long xmlGetLineNo(xmlNode* node)
+    cdef void xmlElemDump(stdio.FILE* f, xmlDoc* doc, xmlNode* cur)
+    cdef void xmlNodeDumpOutput(xmlOutputBuffer* buf,
+                                xmlDoc* doc, xmlNode* cur, int level,
+                                int format, const_char* encoding)
+    cdef void xmlBufAttrSerializeTxtContent(xmlOutputBuffer *buf, xmlDoc *doc,
+                                xmlAttr *attr, const_xmlChar *string)
+    cdef void xmlNodeSetName(xmlNode* cur, const_xmlChar* name)
+    cdef void xmlNodeSetContent(xmlNode* cur, const_xmlChar* content)
+    cdef xmlDtd* xmlCopyDtd(xmlDtd* dtd)
+    cdef xmlDoc* xmlCopyDoc(xmlDoc* doc, int recursive)
+    cdef xmlNode* xmlCopyNode(xmlNode* node, int extended)
+    cdef xmlNode* xmlDocCopyNode(xmlNode* node, xmlDoc* doc, int extended)
+    cdef int xmlReconciliateNs(xmlDoc* doc, xmlNode* tree)
+    cdef xmlNs* xmlNewReconciliedNs(xmlDoc* doc, xmlNode* tree, xmlNs* ns)
+    cdef xmlBuffer* xmlBufferCreate()
+    cdef void xmlBufferWriteChar(xmlBuffer* buf, char* string)
+    cdef void xmlBufferFree(xmlBuffer* buf)
+    cdef const_xmlChar* xmlBufferContent(xmlBuffer* buf)
+    cdef int xmlBufferLength(xmlBuffer* buf)
+    cdef const_xmlChar* xmlBufContent(xmlBuf* buf) # new in libxml2 2.9
+    cdef size_t xmlBufUse(xmlBuf* buf) # new in libxml2 2.9
+    cdef int xmlKeepBlanksDefault(int val)
+    cdef xmlChar* xmlNodeGetBase(xmlDoc* doc, xmlNode* node)
+    cdef xmlDtd* xmlCreateIntSubset(xmlDoc* doc, const_xmlChar* name,
+                                    const_xmlChar* ExternalID, const_xmlChar* SystemID)
+    cdef void xmlNodeSetBase(xmlNode* node, const_xmlChar* uri)
+    cdef int xmlValidateNCName(const_xmlChar* value, int space)
+
+cdef extern from "libxml/uri.h" nogil:
+    cdef const_xmlChar* xmlBuildURI(const_xmlChar* href, const_xmlChar* base)
+
+cdef extern from "libxml/HTMLtree.h" nogil:
+    cdef void htmlNodeDumpFormatOutput(xmlOutputBuffer* buf,
+                                       xmlDoc* doc, xmlNode* cur,
+                                       char* encoding, int format)
+    cdef xmlDoc* htmlNewDoc(const_xmlChar* uri, const_xmlChar* externalID)
+
+cdef extern from "libxml/valid.h" nogil:
+    cdef xmlAttr* xmlGetID(xmlDoc* doc, const_xmlChar* ID)
+    cdef void xmlDumpNotationTable(xmlBuffer* buffer,
+                                   xmlNotationTable* table)
+    cdef int xmlValidateNameValue(const_xmlChar* value)
+
+cdef extern from "libxml/xmlIO.h":
+    cdef int xmlOutputBufferWrite(xmlOutputBuffer* out,
+                                  int len, const_char* str) nogil
+    cdef int xmlOutputBufferWriteString(xmlOutputBuffer* out, const_char* str) nogil
+    cdef int xmlOutputBufferWriteEscape(xmlOutputBuffer* out,
+                                        const_xmlChar* str,
+                                        xmlCharEncodingOutputFunc escapefunc) nogil
+    cdef int xmlOutputBufferFlush(xmlOutputBuffer* out) nogil
+    cdef int xmlOutputBufferClose(xmlOutputBuffer* out) nogil
+
+    ctypedef int (*xmlInputReadCallback)(void* context,
+                                         char* buffer, int len) noexcept nogil
+    ctypedef int (*xmlInputCloseCallback)(void* context) noexcept nogil
+
+    ctypedef int (*xmlOutputWriteCallback)(void* context,
+                                           char* buffer, int len) noexcept
+    ctypedef int (*xmlOutputCloseCallback)(void* context) noexcept
+
+    cdef xmlOutputBuffer* xmlAllocOutputBuffer(
+        xmlCharEncodingHandler* encoder) nogil
+    cdef xmlOutputBuffer* xmlOutputBufferCreateIO(
+        xmlOutputWriteCallback iowrite,
+        xmlOutputCloseCallback ioclose,
+        void * ioctx,
+        xmlCharEncodingHandler* encoder) nogil
+    cdef xmlOutputBuffer* xmlOutputBufferCreateFile(
+        stdio.FILE* file, xmlCharEncodingHandler* encoder) nogil
+    cdef xmlOutputBuffer* xmlOutputBufferCreateFilename(
+        char* URI, xmlCharEncodingHandler* encoder, int compression) nogil
+
+cdef extern from "libxml/xmlsave.h" nogil:
+    ctypedef struct xmlSaveCtxt
+
+    ctypedef enum xmlSaveOption:
+        XML_SAVE_FORMAT   = 1   # format save output            (2.6.17)
+        XML_SAVE_NO_DECL  = 2   # drop the xml declaration      (2.6.21)
+        XML_SAVE_NO_EMPTY = 4   # no empty tags                 (2.6.22)
+        XML_SAVE_NO_XHTML = 8   # disable XHTML1 specific rules (2.6.22)
+        XML_SAVE_XHTML = 16     # force XHTML1 specific rules         (2.7.2)
+        XML_SAVE_AS_XML = 32    # force XML serialization on HTML doc (2.7.2)
+        XML_SAVE_AS_HTML = 64   # force HTML serialization on XML doc (2.7.2)
+
+    cdef xmlSaveCtxt* xmlSaveToFilename(char* filename, char* encoding,
+                                        int options)
+    cdef xmlSaveCtxt* xmlSaveToBuffer(xmlBuffer* buffer, char* encoding,
+                                      int options) # libxml2 2.6.23
+    cdef long xmlSaveDoc(xmlSaveCtxt* ctxt, xmlDoc* doc)
+    cdef long xmlSaveTree(xmlSaveCtxt* ctxt, xmlNode* node)
+    cdef int xmlSaveClose(xmlSaveCtxt* ctxt)
+    cdef int xmlSaveFlush(xmlSaveCtxt* ctxt)
+    cdef int xmlSaveSetAttrEscape(xmlSaveCtxt* ctxt, void* escape_func)
+    cdef int xmlSaveSetEscape(xmlSaveCtxt* ctxt, void* escape_func)
+
+cdef extern from "libxml/globals.h" nogil:
+    cdef int xmlThrDefKeepBlanksDefaultValue(int onoff)
+    cdef int xmlThrDefLineNumbersDefaultValue(int onoff)
+    cdef int xmlThrDefIndentTreeOutput(int onoff)
+
+cdef extern from "libxml/xmlmemory.h" nogil:
+    cdef void* xmlMalloc(size_t size)
+    cdef int xmlMemBlocks()
+    cdef int xmlMemUsed()
+
+cdef extern from "etree_defs.h" nogil:
+    cdef bint _isElement(xmlNode* node)
+    cdef bint _isElementOrXInclude(xmlNode* node)
+    cdef const_xmlChar* _getNs(xmlNode* node)
+    cdef void BEGIN_FOR_EACH_ELEMENT_FROM(xmlNode* tree_top,
+                                          xmlNode* start_node,
+                                          bint inclusive)
+    cdef void END_FOR_EACH_ELEMENT_FROM(xmlNode* start_node)
+    cdef void BEGIN_FOR_EACH_FROM(xmlNode* tree_top,
+                                  xmlNode* start_node,
+                                  bint inclusive)
+    cdef void END_FOR_EACH_FROM(xmlNode* start_node)

.venv/lib/python3.12/site-packages/lxml/includes/uri.pxd

@@ -0,0 +1,5 @@
+cdef extern from "libxml/uri.h" nogil:
+    ctypedef struct xmlURI
+
+    cdef xmlURI* xmlParseURI(char* str)
+    cdef void xmlFreeURI(xmlURI* uri)

.venv/lib/python3.12/site-packages/lxml/includes/xinclude.pxd

@@ -0,0 +1,22 @@
+from lxml.includes.tree cimport xmlDoc, xmlNode
+
+cdef extern from "libxml/xinclude.h" nogil:
+
+    ctypedef struct xmlXIncludeCtxt
+
+    cdef int xmlXIncludeProcess(xmlDoc* doc)
+    cdef int xmlXIncludeProcessFlags(xmlDoc* doc, int parser_opts)
+    cdef int xmlXIncludeProcessTree(xmlNode* doc)
+    cdef int xmlXIncludeProcessTreeFlags(xmlNode* doc, int parser_opts)
+
+    # libxml2 >= 2.7.4
+    cdef int xmlXIncludeProcessTreeFlagsData(
+            xmlNode* doc, int parser_opts, void* data)
+
+    cdef xmlXIncludeCtxt* xmlXIncludeNewContext(xmlDoc* doc)
+    cdef int xmlXIncludeProcessNode(xmlXIncludeCtxt* ctxt, xmlNode* node)
+    cdef int xmlXIncludeSetFlags(xmlXIncludeCtxt* ctxt, int flags)
+
+    # libxml2 >= 2.6.27
+    cdef int xmlXIncludeProcessFlagsData(
+        xmlDoc* doc, int flags, void* data)

.venv/lib/python3.12/site-packages/lxml/includes/xmlerror.pxd

@@ -0,0 +1,860 @@
+
+# --- BEGIN: GENERATED CONSTANTS ---
+
+# This section is generated by the script 'update-error-constants.py'.
+
+cdef extern from "libxml/xmlerror.h":
+    ctypedef enum xmlErrorLevel:
+        XML_ERR_NONE                                       =       0 # Success
+        XML_ERR_WARNING                                    =       1 # A warning
+        XML_ERR_ERROR                                      =       2 # An error
+        XML_ERR_FATAL                                      =       3 # A fatal error
+
+    ctypedef enum xmlErrorDomain:
+        XML_FROM_NONE                                      =       0 # Unknown
+        XML_FROM_PARSER                                    =       1 # The XML parser
+        XML_FROM_TREE                                      =       2 # The tree module (unused)
+        XML_FROM_NAMESPACE                                 =       3 # The XML Namespace module
+        XML_FROM_DTD                                       =       4 # The XML DTD validation with parser context
+        XML_FROM_HTML                                      =       5 # The HTML parser
+        XML_FROM_MEMORY                                    =       6 # The memory allocator (unused)
+        XML_FROM_OUTPUT                                    =       7 # The serialization code
+        XML_FROM_IO                                        =       8 # The Input/Output stack
+        XML_FROM_FTP                                       =       9 # The FTP module (unused)
+        XML_FROM_HTTP                                      =      10 # The HTTP module (unused)
+        XML_FROM_XINCLUDE                                  =      11 # The XInclude processing
+        XML_FROM_XPATH                                     =      12 # The XPath module
+        XML_FROM_XPOINTER                                  =      13 # The XPointer module
+        XML_FROM_REGEXP                                    =      14 # The regular expressions module
+        XML_FROM_DATATYPE                                  =      15 # The W3C XML Schemas Datatype module
+        XML_FROM_SCHEMASP                                  =      16 # The W3C XML Schemas parser module
+        XML_FROM_SCHEMASV                                  =      17 # The W3C XML Schemas validation module
+        XML_FROM_RELAXNGP                                  =      18 # The Relax-NG parser module
+        XML_FROM_RELAXNGV                                  =      19 # The Relax-NG validator module
+        XML_FROM_CATALOG                                   =      20 # The Catalog module
+        XML_FROM_C14N                                      =      21 # The Canonicalization module
+        XML_FROM_XSLT                                      =      22 # The XSLT engine from libxslt (unused)
+        XML_FROM_VALID                                     =      23 # The XML DTD validation with valid context
+        XML_FROM_CHECK                                     =      24 # The error checking module (unused)
+        XML_FROM_WRITER                                    =      25 # The xmlwriter module
+        XML_FROM_MODULE                                    =      26 # The dynamically loaded module module (unused)
+        XML_FROM_I18N                                      =      27 # The module handling character conversion (unused)
+        XML_FROM_SCHEMATRONV                               =      28 # The Schematron validator module
+        XML_FROM_BUFFER                                    =      29 # The buffers module (unused)
+        XML_FROM_URI                                       =      30 # The URI module (unused)
+
+    ctypedef enum xmlParserErrors:
+        XML_ERR_OK                                         =       0 # Success
+        XML_ERR_INTERNAL_ERROR                             =       1 # Internal assertion failure
+        XML_ERR_NO_MEMORY                                  =       2 # Out of memory
+        XML_ERR_DOCUMENT_START                             =       3
+        XML_ERR_DOCUMENT_EMPTY                             =       4
+        XML_ERR_DOCUMENT_END                               =       5
+        XML_ERR_INVALID_HEX_CHARREF                        =       6
+        XML_ERR_INVALID_DEC_CHARREF                        =       7
+        XML_ERR_INVALID_CHARREF                            =       8
+        XML_ERR_INVALID_CHAR                               =       9
+        XML_ERR_CHARREF_AT_EOF                             =      10
+        XML_ERR_CHARREF_IN_PROLOG                          =      11
+        XML_ERR_CHARREF_IN_EPILOG                          =      12
+        XML_ERR_CHARREF_IN_DTD                             =      13
+        XML_ERR_ENTITYREF_AT_EOF                           =      14
+        XML_ERR_ENTITYREF_IN_PROLOG                        =      15
+        XML_ERR_ENTITYREF_IN_EPILOG                        =      16
+        XML_ERR_ENTITYREF_IN_DTD                           =      17
+        XML_ERR_PEREF_AT_EOF                               =      18
+        XML_ERR_PEREF_IN_PROLOG                            =      19
+        XML_ERR_PEREF_IN_EPILOG                            =      20
+        XML_ERR_PEREF_IN_INT_SUBSET                        =      21
+        XML_ERR_ENTITYREF_NO_NAME                          =      22
+        XML_ERR_ENTITYREF_SEMICOL_MISSING                  =      23
+        XML_ERR_PEREF_NO_NAME                              =      24
+        XML_ERR_PEREF_SEMICOL_MISSING                      =      25
+        XML_ERR_UNDECLARED_ENTITY                          =      26
+        XML_WAR_UNDECLARED_ENTITY                          =      27
+        XML_ERR_UNPARSED_ENTITY                            =      28
+        XML_ERR_ENTITY_IS_EXTERNAL                         =      29
+        XML_ERR_ENTITY_IS_PARAMETER                        =      30
+        XML_ERR_UNKNOWN_ENCODING                           =      31
+        XML_ERR_UNSUPPORTED_ENCODING                       =      32 # Unsupported character encoding
+        XML_ERR_STRING_NOT_STARTED                         =      33
+        XML_ERR_STRING_NOT_CLOSED                          =      34
+        XML_ERR_NS_DECL_ERROR                              =      35
+        XML_ERR_ENTITY_NOT_STARTED                         =      36
+        XML_ERR_ENTITY_NOT_FINISHED                        =      37
+        XML_ERR_LT_IN_ATTRIBUTE                            =      38
+        XML_ERR_ATTRIBUTE_NOT_STARTED                      =      39
+        XML_ERR_ATTRIBUTE_NOT_FINISHED                     =      40
+        XML_ERR_ATTRIBUTE_WITHOUT_VALUE                    =      41
+        XML_ERR_ATTRIBUTE_REDEFINED                        =      42
+        XML_ERR_LITERAL_NOT_STARTED                        =      43
+        XML_ERR_LITERAL_NOT_FINISHED                       =      44
+        XML_ERR_COMMENT_NOT_FINISHED                       =      45
+        XML_ERR_PI_NOT_STARTED                             =      46
+        XML_ERR_PI_NOT_FINISHED                            =      47
+        XML_ERR_NOTATION_NOT_STARTED                       =      48
+        XML_ERR_NOTATION_NOT_FINISHED                      =      49
+        XML_ERR_ATTLIST_NOT_STARTED                        =      50
+        XML_ERR_ATTLIST_NOT_FINISHED                       =      51
+        XML_ERR_MIXED_NOT_STARTED                          =      52
+        XML_ERR_MIXED_NOT_FINISHED                         =      53
+        XML_ERR_ELEMCONTENT_NOT_STARTED                    =      54
+        XML_ERR_ELEMCONTENT_NOT_FINISHED                   =      55
+        XML_ERR_XMLDECL_NOT_STARTED                        =      56
+        XML_ERR_XMLDECL_NOT_FINISHED                       =      57
+        XML_ERR_CONDSEC_NOT_STARTED                        =      58
+        XML_ERR_CONDSEC_NOT_FINISHED                       =      59
+        XML_ERR_EXT_SUBSET_NOT_FINISHED                    =      60
+        XML_ERR_DOCTYPE_NOT_FINISHED                       =      61
+        XML_ERR_MISPLACED_CDATA_END                        =      62
+        XML_ERR_CDATA_NOT_FINISHED                         =      63
+        XML_ERR_RESERVED_XML_NAME                          =      64
+        XML_ERR_SPACE_REQUIRED                             =      65
+        XML_ERR_SEPARATOR_REQUIRED                         =      66
+        XML_ERR_NMTOKEN_REQUIRED                           =      67
+        XML_ERR_NAME_REQUIRED                              =      68
+        XML_ERR_PCDATA_REQUIRED                            =      69
+        XML_ERR_URI_REQUIRED                               =      70
+        XML_ERR_PUBID_REQUIRED                             =      71
+        XML_ERR_LT_REQUIRED                                =      72
+        XML_ERR_GT_REQUIRED                                =      73
+        XML_ERR_LTSLASH_REQUIRED                           =      74
+        XML_ERR_EQUAL_REQUIRED                             =      75
+        XML_ERR_TAG_NAME_MISMATCH                          =      76
+        XML_ERR_TAG_NOT_FINISHED                           =      77
+        XML_ERR_STANDALONE_VALUE                           =      78
+        XML_ERR_ENCODING_NAME                              =      79
+        XML_ERR_HYPHEN_IN_COMMENT                          =      80
+        XML_ERR_INVALID_ENCODING                           =      81
+        XML_ERR_EXT_ENTITY_STANDALONE                      =      82
+        XML_ERR_CONDSEC_INVALID                            =      83
+        XML_ERR_VALUE_REQUIRED                             =      84
+        XML_ERR_NOT_WELL_BALANCED                          =      85
+        XML_ERR_EXTRA_CONTENT                              =      86
+        XML_ERR_ENTITY_CHAR_ERROR                          =      87
+        XML_ERR_ENTITY_PE_INTERNAL                         =      88
+        XML_ERR_ENTITY_LOOP                                =      89
+        XML_ERR_ENTITY_BOUNDARY                            =      90
+        XML_ERR_INVALID_URI                                =      91
+        XML_ERR_URI_FRAGMENT                               =      92
+        XML_WAR_CATALOG_PI                                 =      93
+        XML_ERR_NO_DTD                                     =      94
+        XML_ERR_CONDSEC_INVALID_KEYWORD                    =      95
+        XML_ERR_VERSION_MISSING                            =      96
+        XML_WAR_UNKNOWN_VERSION                            =      97
+        XML_WAR_LANG_VALUE                                 =      98
+        XML_WAR_NS_URI                                     =      99
+        XML_WAR_NS_URI_RELATIVE                            =     100
+        XML_ERR_MISSING_ENCODING                           =     101
+        XML_WAR_SPACE_VALUE                                =     102
+        XML_ERR_NOT_STANDALONE                             =     103
+        XML_ERR_ENTITY_PROCESSING                          =     104
+        XML_ERR_NOTATION_PROCESSING                        =     105
+        XML_WAR_NS_COLUMN                                  =     106
+        XML_WAR_ENTITY_REDEFINED                           =     107
+        XML_ERR_UNKNOWN_VERSION                            =     108
+        XML_ERR_VERSION_MISMATCH                           =     109
+        XML_ERR_NAME_TOO_LONG                              =     110
+        XML_ERR_USER_STOP                                  =     111
+        XML_ERR_COMMENT_ABRUPTLY_ENDED                     =     112
+        XML_WAR_ENCODING_MISMATCH                          =     113
+        XML_ERR_RESOURCE_LIMIT                             =     114 # Internal resource limit like maximum amplification factor exceeded
+        XML_ERR_ARGUMENT                                   =     115 # Invalid argument
+        XML_ERR_SYSTEM                                     =     116 # Unexpected error from the OS or an external library
+        XML_ERR_REDECL_PREDEF_ENTITY                       =     117
+        XML_ERR_INT_SUBSET_NOT_FINISHED                    =     118
+        XML_NS_ERR_XML_NAMESPACE                           =     200
+        XML_NS_ERR_UNDEFINED_NAMESPACE                     =     201
+        XML_NS_ERR_QNAME                                   =     202
+        XML_NS_ERR_ATTRIBUTE_REDEFINED                     =     203
+        XML_NS_ERR_EMPTY                                   =     204
+        XML_NS_ERR_COLON                                   =     205
+        XML_DTD_ATTRIBUTE_DEFAULT                          =     500
+        XML_DTD_ATTRIBUTE_REDEFINED                        =     501
+        XML_DTD_ATTRIBUTE_VALUE                            =     502
+        XML_DTD_CONTENT_ERROR                              =     503
+        XML_DTD_CONTENT_MODEL                              =     504
+        XML_DTD_CONTENT_NOT_DETERMINIST                    =     505
+        XML_DTD_DIFFERENT_PREFIX                           =     506
+        XML_DTD_ELEM_DEFAULT_NAMESPACE                     =     507
+        XML_DTD_ELEM_NAMESPACE                             =     508
+        XML_DTD_ELEM_REDEFINED                             =     509
+        XML_DTD_EMPTY_NOTATION                             =     510
+        XML_DTD_ENTITY_TYPE                                =     511
+        XML_DTD_ID_FIXED                                   =     512
+        XML_DTD_ID_REDEFINED                               =     513
+        XML_DTD_ID_SUBSET                                  =     514
+        XML_DTD_INVALID_CHILD                              =     515
+        XML_DTD_INVALID_DEFAULT                            =     516
+        XML_DTD_LOAD_ERROR                                 =     517
+        XML_DTD_MISSING_ATTRIBUTE                          =     518
+        XML_DTD_MIXED_CORRUPT                              =     519
+        XML_DTD_MULTIPLE_ID                                =     520
+        XML_DTD_NO_DOC                                     =     521
+        XML_DTD_NO_DTD                                     =     522
+        XML_DTD_NO_ELEM_NAME                               =     523
+        XML_DTD_NO_PREFIX                                  =     524
+        XML_DTD_NO_ROOT                                    =     525
+        XML_DTD_NOTATION_REDEFINED                         =     526
+        XML_DTD_NOTATION_VALUE                             =     527
+        XML_DTD_NOT_EMPTY                                  =     528
+        XML_DTD_NOT_PCDATA                                 =     529
+        XML_DTD_NOT_STANDALONE                             =     530
+        XML_DTD_ROOT_NAME                                  =     531
+        XML_DTD_STANDALONE_WHITE_SPACE                     =     532
+        XML_DTD_UNKNOWN_ATTRIBUTE                          =     533
+        XML_DTD_UNKNOWN_ELEM                               =     534
+        XML_DTD_UNKNOWN_ENTITY                             =     535
+        XML_DTD_UNKNOWN_ID                                 =     536
+        XML_DTD_UNKNOWN_NOTATION                           =     537
+        XML_DTD_STANDALONE_DEFAULTED                       =     538
+        XML_DTD_XMLID_VALUE                                =     539
+        XML_DTD_XMLID_TYPE                                 =     540
+        XML_DTD_DUP_TOKEN                                  =     541
+        XML_HTML_STRUCURE_ERROR                            =     800
+        XML_HTML_UNKNOWN_TAG                               =     801
+        XML_HTML_INCORRECTLY_OPENED_COMMENT                =     802
+        XML_RNGP_ANYNAME_ATTR_ANCESTOR                     =    1000
+        XML_RNGP_ATTR_CONFLICT                             =    1001
+        XML_RNGP_ATTRIBUTE_CHILDREN                        =    1002
+        XML_RNGP_ATTRIBUTE_CONTENT                         =    1003
+        XML_RNGP_ATTRIBUTE_EMPTY                           =    1004
+        XML_RNGP_ATTRIBUTE_NOOP                            =    1005
+        XML_RNGP_CHOICE_CONTENT                            =    1006
+        XML_RNGP_CHOICE_EMPTY                              =    1007
+        XML_RNGP_CREATE_FAILURE                            =    1008
+        XML_RNGP_DATA_CONTENT                              =    1009
+        XML_RNGP_DEF_CHOICE_AND_INTERLEAVE                 =    1010
+        XML_RNGP_DEFINE_CREATE_FAILED                      =    1011
+        XML_RNGP_DEFINE_EMPTY                              =    1012
+        XML_RNGP_DEFINE_MISSING                            =    1013
+        XML_RNGP_DEFINE_NAME_MISSING                       =    1014
+        XML_RNGP_ELEM_CONTENT_EMPTY                        =    1015
+        XML_RNGP_ELEM_CONTENT_ERROR                        =    1016
+        XML_RNGP_ELEMENT_EMPTY                             =    1017
+        XML_RNGP_ELEMENT_CONTENT                           =    1018
+        XML_RNGP_ELEMENT_NAME                              =    1019
+        XML_RNGP_ELEMENT_NO_CONTENT                        =    1020
+        XML_RNGP_ELEM_TEXT_CONFLICT                        =    1021
+        XML_RNGP_EMPTY                                     =    1022
+        XML_RNGP_EMPTY_CONSTRUCT                           =    1023
+        XML_RNGP_EMPTY_CONTENT                             =    1024
+        XML_RNGP_EMPTY_NOT_EMPTY                           =    1025
+        XML_RNGP_ERROR_TYPE_LIB                            =    1026
+        XML_RNGP_EXCEPT_EMPTY                              =    1027
+        XML_RNGP_EXCEPT_MISSING                            =    1028
+        XML_RNGP_EXCEPT_MULTIPLE                           =    1029
+        XML_RNGP_EXCEPT_NO_CONTENT                         =    1030
+        XML_RNGP_EXTERNALREF_EMTPY                         =    1031
+        XML_RNGP_EXTERNAL_REF_FAILURE                      =    1032
+        XML_RNGP_EXTERNALREF_RECURSE                       =    1033
+        XML_RNGP_FORBIDDEN_ATTRIBUTE                       =    1034
+        XML_RNGP_FOREIGN_ELEMENT                           =    1035
+        XML_RNGP_GRAMMAR_CONTENT                           =    1036
+        XML_RNGP_GRAMMAR_EMPTY                             =    1037
+        XML_RNGP_GRAMMAR_MISSING                           =    1038
+        XML_RNGP_GRAMMAR_NO_START                          =    1039
+        XML_RNGP_GROUP_ATTR_CONFLICT                       =    1040
+        XML_RNGP_HREF_ERROR                                =    1041
+        XML_RNGP_INCLUDE_EMPTY                             =    1042
+        XML_RNGP_INCLUDE_FAILURE                           =    1043
+        XML_RNGP_INCLUDE_RECURSE                           =    1044
+        XML_RNGP_INTERLEAVE_ADD                            =    1045
+        XML_RNGP_INTERLEAVE_CREATE_FAILED                  =    1046
+        XML_RNGP_INTERLEAVE_EMPTY                          =    1047
+        XML_RNGP_INTERLEAVE_NO_CONTENT                     =    1048
+        XML_RNGP_INVALID_DEFINE_NAME                       =    1049
+        XML_RNGP_INVALID_URI                               =    1050
+        XML_RNGP_INVALID_VALUE                             =    1051
+        XML_RNGP_MISSING_HREF                              =    1052
+        XML_RNGP_NAME_MISSING                              =    1053
+        XML_RNGP_NEED_COMBINE                              =    1054
+        XML_RNGP_NOTALLOWED_NOT_EMPTY                      =    1055
+        XML_RNGP_NSNAME_ATTR_ANCESTOR                      =    1056
+        XML_RNGP_NSNAME_NO_NS                              =    1057
+        XML_RNGP_PARAM_FORBIDDEN                           =    1058
+        XML_RNGP_PARAM_NAME_MISSING                        =    1059
+        XML_RNGP_PARENTREF_CREATE_FAILED                   =    1060
+        XML_RNGP_PARENTREF_NAME_INVALID                    =    1061
+        XML_RNGP_PARENTREF_NO_NAME                         =    1062
+        XML_RNGP_PARENTREF_NO_PARENT                       =    1063
+        XML_RNGP_PARENTREF_NOT_EMPTY                       =    1064
+        XML_RNGP_PARSE_ERROR                               =    1065
+        XML_RNGP_PAT_ANYNAME_EXCEPT_ANYNAME                =    1066
+        XML_RNGP_PAT_ATTR_ATTR                             =    1067
+        XML_RNGP_PAT_ATTR_ELEM                             =    1068
+        XML_RNGP_PAT_DATA_EXCEPT_ATTR                      =    1069
+        XML_RNGP_PAT_DATA_EXCEPT_ELEM                      =    1070
+        XML_RNGP_PAT_DATA_EXCEPT_EMPTY                     =    1071
+        XML_RNGP_PAT_DATA_EXCEPT_GROUP                     =    1072
+        XML_RNGP_PAT_DATA_EXCEPT_INTERLEAVE                =    1073
+        XML_RNGP_PAT_DATA_EXCEPT_LIST                      =    1074
+        XML_RNGP_PAT_DATA_EXCEPT_ONEMORE                   =    1075
+        XML_RNGP_PAT_DATA_EXCEPT_REF                       =    1076
+        XML_RNGP_PAT_DATA_EXCEPT_TEXT                      =    1077
+        XML_RNGP_PAT_LIST_ATTR                             =    1078
+        XML_RNGP_PAT_LIST_ELEM                             =    1079
+        XML_RNGP_PAT_LIST_INTERLEAVE                       =    1080
+        XML_RNGP_PAT_LIST_LIST                             =    1081
+        XML_RNGP_PAT_LIST_REF                              =    1082
+        XML_RNGP_PAT_LIST_TEXT                             =    1083
+        XML_RNGP_PAT_NSNAME_EXCEPT_ANYNAME                 =    1084
+        XML_RNGP_PAT_NSNAME_EXCEPT_NSNAME                  =    1085
+        XML_RNGP_PAT_ONEMORE_GROUP_ATTR                    =    1086
+        XML_RNGP_PAT_ONEMORE_INTERLEAVE_ATTR               =    1087
+        XML_RNGP_PAT_START_ATTR                            =    1088
+        XML_RNGP_PAT_START_DATA                            =    1089
+        XML_RNGP_PAT_START_EMPTY                           =    1090
+        XML_RNGP_PAT_START_GROUP                           =    1091
+        XML_RNGP_PAT_START_INTERLEAVE                      =    1092
+        XML_RNGP_PAT_START_LIST                            =    1093
+        XML_RNGP_PAT_START_ONEMORE                         =    1094
+        XML_RNGP_PAT_START_TEXT                            =    1095
+        XML_RNGP_PAT_START_VALUE                           =    1096
+        XML_RNGP_PREFIX_UNDEFINED                          =    1097
+        XML_RNGP_REF_CREATE_FAILED                         =    1098
+        XML_RNGP_REF_CYCLE                                 =    1099
+        XML_RNGP_REF_NAME_INVALID                          =    1100
+        XML_RNGP_REF_NO_DEF                                =    1101
+        XML_RNGP_REF_NO_NAME                               =    1102
+        XML_RNGP_REF_NOT_EMPTY                             =    1103
+        XML_RNGP_START_CHOICE_AND_INTERLEAVE               =    1104
+        XML_RNGP_START_CONTENT                             =    1105
+        XML_RNGP_START_EMPTY                               =    1106
+        XML_RNGP_START_MISSING                             =    1107
+        XML_RNGP_TEXT_EXPECTED                             =    1108
+        XML_RNGP_TEXT_HAS_CHILD                            =    1109
+        XML_RNGP_TYPE_MISSING                              =    1110
+        XML_RNGP_TYPE_NOT_FOUND                            =    1111
+        XML_RNGP_TYPE_VALUE                                =    1112
+        XML_RNGP_UNKNOWN_ATTRIBUTE                         =    1113
+        XML_RNGP_UNKNOWN_COMBINE                           =    1114
+        XML_RNGP_UNKNOWN_CONSTRUCT                         =    1115
+        XML_RNGP_UNKNOWN_TYPE_LIB                          =    1116
+        XML_RNGP_URI_FRAGMENT                              =    1117
+        XML_RNGP_URI_NOT_ABSOLUTE                          =    1118
+        XML_RNGP_VALUE_EMPTY                               =    1119
+        XML_RNGP_VALUE_NO_CONTENT                          =    1120
+        XML_RNGP_XMLNS_NAME                                =    1121
+        XML_RNGP_XML_NS                                    =    1122
+        XML_XPATH_EXPRESSION_OK                            =    1200
+        XML_XPATH_NUMBER_ERROR                             =    1201
+        XML_XPATH_UNFINISHED_LITERAL_ERROR                 =    1202
+        XML_XPATH_START_LITERAL_ERROR                      =    1203
+        XML_XPATH_VARIABLE_REF_ERROR                       =    1204
+        XML_XPATH_UNDEF_VARIABLE_ERROR                     =    1205
+        XML_XPATH_INVALID_PREDICATE_ERROR                  =    1206
+        XML_XPATH_EXPR_ERROR                               =    1207
+        XML_XPATH_UNCLOSED_ERROR                           =    1208
+        XML_XPATH_UNKNOWN_FUNC_ERROR                       =    1209
+        XML_XPATH_INVALID_OPERAND                          =    1210
+        XML_XPATH_INVALID_TYPE                             =    1211
+        XML_XPATH_INVALID_ARITY                            =    1212
+        XML_XPATH_INVALID_CTXT_SIZE                        =    1213
+        XML_XPATH_INVALID_CTXT_POSITION                    =    1214
+        XML_XPATH_MEMORY_ERROR                             =    1215
+        XML_XPTR_SYNTAX_ERROR                              =    1216
+        XML_XPTR_RESOURCE_ERROR                            =    1217
+        XML_XPTR_SUB_RESOURCE_ERROR                        =    1218
+        XML_XPATH_UNDEF_PREFIX_ERROR                       =    1219
+        XML_XPATH_ENCODING_ERROR                           =    1220
+        XML_XPATH_INVALID_CHAR_ERROR                       =    1221
+        XML_TREE_INVALID_HEX                               =    1300
+        XML_TREE_INVALID_DEC                               =    1301
+        XML_TREE_UNTERMINATED_ENTITY                       =    1302
+        XML_TREE_NOT_UTF8                                  =    1303
+        XML_SAVE_NOT_UTF8                                  =    1400
+        XML_SAVE_CHAR_INVALID                              =    1401
+        XML_SAVE_NO_DOCTYPE                                =    1402
+        XML_SAVE_UNKNOWN_ENCODING                          =    1403
+        XML_REGEXP_COMPILE_ERROR                           =    1450
+        XML_IO_UNKNOWN                                     =    1500
+        XML_IO_EACCES                                      =    1501
+        XML_IO_EAGAIN                                      =    1502
+        XML_IO_EBADF                                       =    1503
+        XML_IO_EBADMSG                                     =    1504
+        XML_IO_EBUSY                                       =    1505
+        XML_IO_ECANCELED                                   =    1506
+        XML_IO_ECHILD                                      =    1507
+        XML_IO_EDEADLK                                     =    1508
+        XML_IO_EDOM                                        =    1509
+        XML_IO_EEXIST                                      =    1510
+        XML_IO_EFAULT                                      =    1511
+        XML_IO_EFBIG                                       =    1512
+        XML_IO_EINPROGRESS                                 =    1513
+        XML_IO_EINTR                                       =    1514
+        XML_IO_EINVAL                                      =    1515
+        XML_IO_EIO                                         =    1516
+        XML_IO_EISDIR                                      =    1517
+        XML_IO_EMFILE                                      =    1518
+        XML_IO_EMLINK                                      =    1519
+        XML_IO_EMSGSIZE                                    =    1520
+        XML_IO_ENAMETOOLONG                                =    1521
+        XML_IO_ENFILE                                      =    1522
+        XML_IO_ENODEV                                      =    1523
+        XML_IO_ENOENT                                      =    1524 # File not found
+        XML_IO_ENOEXEC                                     =    1525
+        XML_IO_ENOLCK                                      =    1526
+        XML_IO_ENOMEM                                      =    1527
+        XML_IO_ENOSPC                                      =    1528
+        XML_IO_ENOSYS                                      =    1529
+        XML_IO_ENOTDIR                                     =    1530
+        XML_IO_ENOTEMPTY                                   =    1531
+        XML_IO_ENOTSUP                                     =    1532
+        XML_IO_ENOTTY                                      =    1533
+        XML_IO_ENXIO                                       =    1534
+        XML_IO_EPERM                                       =    1535
+        XML_IO_EPIPE                                       =    1536
+        XML_IO_ERANGE                                      =    1537
+        XML_IO_EROFS                                       =    1538
+        XML_IO_ESPIPE                                      =    1539
+        XML_IO_ESRCH                                       =    1540
+        XML_IO_ETIMEDOUT                                   =    1541
+        XML_IO_EXDEV                                       =    1542
+        XML_IO_NETWORK_ATTEMPT                             =    1543
+        XML_IO_ENCODER                                     =    1544
+        XML_IO_FLUSH                                       =    1545
+        XML_IO_WRITE                                       =    1546
+        XML_IO_NO_INPUT                                    =    1547
+        XML_IO_BUFFER_FULL                                 =    1548
+        XML_IO_LOAD_ERROR                                  =    1549
+        XML_IO_ENOTSOCK                                    =    1550
+        XML_IO_EISCONN                                     =    1551
+        XML_IO_ECONNREFUSED                                =    1552
+        XML_IO_ENETUNREACH                                 =    1553
+        XML_IO_EADDRINUSE                                  =    1554
+        XML_IO_EALREADY                                    =    1555
+        XML_IO_EAFNOSUPPORT                                =    1556
+        XML_IO_UNSUPPORTED_PROTOCOL                        =    1557
+        XML_XINCLUDE_RECURSION                             =    1600
+        XML_XINCLUDE_PARSE_VALUE                           =    1601
+        XML_XINCLUDE_ENTITY_DEF_MISMATCH                   =    1602
+        XML_XINCLUDE_NO_HREF                               =    1603
+        XML_XINCLUDE_NO_FALLBACK                           =    1604
+        XML_XINCLUDE_HREF_URI                              =    1605
+        XML_XINCLUDE_TEXT_FRAGMENT                         =    1606
+        XML_XINCLUDE_TEXT_DOCUMENT                         =    1607
+        XML_XINCLUDE_INVALID_CHAR                          =    1608
+        XML_XINCLUDE_BUILD_FAILED                          =    1609
+        XML_XINCLUDE_UNKNOWN_ENCODING                      =    1610
+        XML_XINCLUDE_MULTIPLE_ROOT                         =    1611
+        XML_XINCLUDE_XPTR_FAILED                           =    1612
+        XML_XINCLUDE_XPTR_RESULT                           =    1613
+        XML_XINCLUDE_INCLUDE_IN_INCLUDE                    =    1614
+        XML_XINCLUDE_FALLBACKS_IN_INCLUDE                  =    1615
+        XML_XINCLUDE_FALLBACK_NOT_IN_INCLUDE               =    1616
+        XML_XINCLUDE_DEPRECATED_NS                         =    1617
+        XML_XINCLUDE_FRAGMENT_ID                           =    1618
+        XML_CATALOG_MISSING_ATTR                           =    1650
+        XML_CATALOG_ENTRY_BROKEN                           =    1651
+        XML_CATALOG_PREFER_VALUE                           =    1652
+        XML_CATALOG_NOT_CATALOG                            =    1653
+        XML_CATALOG_RECURSION                              =    1654
+        XML_SCHEMAP_PREFIX_UNDEFINED                       =    1700
+        XML_SCHEMAP_ATTRFORMDEFAULT_VALUE                  =    1701
+        XML_SCHEMAP_ATTRGRP_NONAME_NOREF                   =    1702
+        XML_SCHEMAP_ATTR_NONAME_NOREF                      =    1703
+        XML_SCHEMAP_COMPLEXTYPE_NONAME_NOREF               =    1704
+        XML_SCHEMAP_ELEMFORMDEFAULT_VALUE                  =    1705
+        XML_SCHEMAP_ELEM_NONAME_NOREF                      =    1706
+        XML_SCHEMAP_EXTENSION_NO_BASE                      =    1707
+        XML_SCHEMAP_FACET_NO_VALUE                         =    1708
+        XML_SCHEMAP_FAILED_BUILD_IMPORT                    =    1709
+        XML_SCHEMAP_GROUP_NONAME_NOREF                     =    1710
+        XML_SCHEMAP_IMPORT_NAMESPACE_NOT_URI               =    1711
+        XML_SCHEMAP_IMPORT_REDEFINE_NSNAME                 =    1712
+        XML_SCHEMAP_IMPORT_SCHEMA_NOT_URI                  =    1713
+        XML_SCHEMAP_INVALID_BOOLEAN                        =    1714
+        XML_SCHEMAP_INVALID_ENUM                           =    1715
+        XML_SCHEMAP_INVALID_FACET                          =    1716
+        XML_SCHEMAP_INVALID_FACET_VALUE                    =    1717
+        XML_SCHEMAP_INVALID_MAXOCCURS                      =    1718
+        XML_SCHEMAP_INVALID_MINOCCURS                      =    1719
+        XML_SCHEMAP_INVALID_REF_AND_SUBTYPE                =    1720
+        XML_SCHEMAP_INVALID_WHITE_SPACE                    =    1721
+        XML_SCHEMAP_NOATTR_NOREF                           =    1722
+        XML_SCHEMAP_NOTATION_NO_NAME                       =    1723
+        XML_SCHEMAP_NOTYPE_NOREF                           =    1724
+        XML_SCHEMAP_REF_AND_SUBTYPE                        =    1725
+        XML_SCHEMAP_RESTRICTION_NONAME_NOREF               =    1726
+        XML_SCHEMAP_SIMPLETYPE_NONAME                      =    1727
+        XML_SCHEMAP_TYPE_AND_SUBTYPE                       =    1728
+        XML_SCHEMAP_UNKNOWN_ALL_CHILD                      =    1729
+        XML_SCHEMAP_UNKNOWN_ANYATTRIBUTE_CHILD             =    1730
+        XML_SCHEMAP_UNKNOWN_ATTR_CHILD                     =    1731
+        XML_SCHEMAP_UNKNOWN_ATTRGRP_CHILD                  =    1732
+        XML_SCHEMAP_UNKNOWN_ATTRIBUTE_GROUP                =    1733
+        XML_SCHEMAP_UNKNOWN_BASE_TYPE                      =    1734
+        XML_SCHEMAP_UNKNOWN_CHOICE_CHILD                   =    1735
+        XML_SCHEMAP_UNKNOWN_COMPLEXCONTENT_CHILD           =    1736
+        XML_SCHEMAP_UNKNOWN_COMPLEXTYPE_CHILD              =    1737
+        XML_SCHEMAP_UNKNOWN_ELEM_CHILD                     =    1738
+        XML_SCHEMAP_UNKNOWN_EXTENSION_CHILD                =    1739
+        XML_SCHEMAP_UNKNOWN_FACET_CHILD                    =    1740
+        XML_SCHEMAP_UNKNOWN_FACET_TYPE                     =    1741
+        XML_SCHEMAP_UNKNOWN_GROUP_CHILD                    =    1742
+        XML_SCHEMAP_UNKNOWN_IMPORT_CHILD                   =    1743
+        XML_SCHEMAP_UNKNOWN_LIST_CHILD                     =    1744
+        XML_SCHEMAP_UNKNOWN_NOTATION_CHILD                 =    1745
+        XML_SCHEMAP_UNKNOWN_PROCESSCONTENT_CHILD           =    1746
+        XML_SCHEMAP_UNKNOWN_REF                            =    1747
+        XML_SCHEMAP_UNKNOWN_RESTRICTION_CHILD              =    1748
+        XML_SCHEMAP_UNKNOWN_SCHEMAS_CHILD                  =    1749
+        XML_SCHEMAP_UNKNOWN_SEQUENCE_CHILD                 =    1750
+        XML_SCHEMAP_UNKNOWN_SIMPLECONTENT_CHILD            =    1751
+        XML_SCHEMAP_UNKNOWN_SIMPLETYPE_CHILD               =    1752
+        XML_SCHEMAP_UNKNOWN_TYPE                           =    1753
+        XML_SCHEMAP_UNKNOWN_UNION_CHILD                    =    1754
+        XML_SCHEMAP_ELEM_DEFAULT_FIXED                     =    1755
+        XML_SCHEMAP_REGEXP_INVALID                         =    1756
+        XML_SCHEMAP_FAILED_LOAD                            =    1757
+        XML_SCHEMAP_NOTHING_TO_PARSE                       =    1758
+        XML_SCHEMAP_NOROOT                                 =    1759
+        XML_SCHEMAP_REDEFINED_GROUP                        =    1760
+        XML_SCHEMAP_REDEFINED_TYPE                         =    1761
+        XML_SCHEMAP_REDEFINED_ELEMENT                      =    1762
+        XML_SCHEMAP_REDEFINED_ATTRGROUP                    =    1763
+        XML_SCHEMAP_REDEFINED_ATTR                         =    1764
+        XML_SCHEMAP_REDEFINED_NOTATION                     =    1765
+        XML_SCHEMAP_FAILED_PARSE                           =    1766
+        XML_SCHEMAP_UNKNOWN_PREFIX                         =    1767
+        XML_SCHEMAP_DEF_AND_PREFIX                         =    1768
+        XML_SCHEMAP_UNKNOWN_INCLUDE_CHILD                  =    1769
+        XML_SCHEMAP_INCLUDE_SCHEMA_NOT_URI                 =    1770
+        XML_SCHEMAP_INCLUDE_SCHEMA_NO_URI                  =    1771
+        XML_SCHEMAP_NOT_SCHEMA                             =    1772
+        XML_SCHEMAP_UNKNOWN_MEMBER_TYPE                    =    1773
+        XML_SCHEMAP_INVALID_ATTR_USE                       =    1774
+        XML_SCHEMAP_RECURSIVE                              =    1775
+        XML_SCHEMAP_SUPERNUMEROUS_LIST_ITEM_TYPE           =    1776
+        XML_SCHEMAP_INVALID_ATTR_COMBINATION               =    1777
+        XML_SCHEMAP_INVALID_ATTR_INLINE_COMBINATION        =    1778
+        XML_SCHEMAP_MISSING_SIMPLETYPE_CHILD               =    1779
+        XML_SCHEMAP_INVALID_ATTR_NAME                      =    1780
+        XML_SCHEMAP_REF_AND_CONTENT                        =    1781
+        XML_SCHEMAP_CT_PROPS_CORRECT_1                     =    1782
+        XML_SCHEMAP_CT_PROPS_CORRECT_2                     =    1783
+        XML_SCHEMAP_CT_PROPS_CORRECT_3                     =    1784
+        XML_SCHEMAP_CT_PROPS_CORRECT_4                     =    1785
+        XML_SCHEMAP_CT_PROPS_CORRECT_5                     =    1786
+        XML_SCHEMAP_DERIVATION_OK_RESTRICTION_1            =    1787
+        XML_SCHEMAP_DERIVATION_OK_RESTRICTION_2_1_1        =    1788
+        XML_SCHEMAP_DERIVATION_OK_RESTRICTION_2_1_2        =    1789
+        XML_SCHEMAP_DERIVATION_OK_RESTRICTION_2_2          =    1790
+        XML_SCHEMAP_DERIVATION_OK_RESTRICTION_3            =    1791
+        XML_SCHEMAP_WILDCARD_INVALID_NS_MEMBER             =    1792
+        XML_SCHEMAP_INTERSECTION_NOT_EXPRESSIBLE           =    1793
+        XML_SCHEMAP_UNION_NOT_EXPRESSIBLE                  =    1794
+        XML_SCHEMAP_SRC_IMPORT_3_1                         =    1795
+        XML_SCHEMAP_SRC_IMPORT_3_2                         =    1796
+        XML_SCHEMAP_DERIVATION_OK_RESTRICTION_4_1          =    1797
+        XML_SCHEMAP_DERIVATION_OK_RESTRICTION_4_2          =    1798
+        XML_SCHEMAP_DERIVATION_OK_RESTRICTION_4_3          =    1799
+        XML_SCHEMAP_COS_CT_EXTENDS_1_3                     =    1800
+        XML_SCHEMAV_NOROOT                                 =    1801
+        XML_SCHEMAV_UNDECLAREDELEM                         =    1802
+        XML_SCHEMAV_NOTTOPLEVEL                            =    1803
+        XML_SCHEMAV_MISSING                                =    1804
+        XML_SCHEMAV_WRONGELEM                              =    1805
+        XML_SCHEMAV_NOTYPE                                 =    1806
+        XML_SCHEMAV_NOROLLBACK                             =    1807
+        XML_SCHEMAV_ISABSTRACT                             =    1808
+        XML_SCHEMAV_NOTEMPTY                               =    1809
+        XML_SCHEMAV_ELEMCONT                               =    1810
+        XML_SCHEMAV_HAVEDEFAULT                            =    1811
+        XML_SCHEMAV_NOTNILLABLE                            =    1812
+        XML_SCHEMAV_EXTRACONTENT                           =    1813
+        XML_SCHEMAV_INVALIDATTR                            =    1814
+        XML_SCHEMAV_INVALIDELEM                            =    1815
+        XML_SCHEMAV_NOTDETERMINIST                         =    1816
+        XML_SCHEMAV_CONSTRUCT                              =    1817
+        XML_SCHEMAV_INTERNAL                               =    1818
+        XML_SCHEMAV_NOTSIMPLE                              =    1819
+        XML_SCHEMAV_ATTRUNKNOWN                            =    1820
+        XML_SCHEMAV_ATTRINVALID                            =    1821
+        XML_SCHEMAV_VALUE                                  =    1822
+        XML_SCHEMAV_FACET                                  =    1823
+        XML_SCHEMAV_CVC_DATATYPE_VALID_1_2_1               =    1824
+        XML_SCHEMAV_CVC_DATATYPE_VALID_1_2_2               =    1825
+        XML_SCHEMAV_CVC_DATATYPE_VALID_1_2_3               =    1826
+        XML_SCHEMAV_CVC_TYPE_3_1_1                         =    1827
+        XML_SCHEMAV_CVC_TYPE_3_1_2                         =    1828
+        XML_SCHEMAV_CVC_FACET_VALID                        =    1829
+        XML_SCHEMAV_CVC_LENGTH_VALID                       =    1830
+        XML_SCHEMAV_CVC_MINLENGTH_VALID                    =    1831
+        XML_SCHEMAV_CVC_MAXLENGTH_VALID                    =    1832
+        XML_SCHEMAV_CVC_MININCLUSIVE_VALID                 =    1833
+        XML_SCHEMAV_CVC_MAXINCLUSIVE_VALID                 =    1834
+        XML_SCHEMAV_CVC_MINEXCLUSIVE_VALID                 =    1835
+        XML_SCHEMAV_CVC_MAXEXCLUSIVE_VALID                 =    1836
+        XML_SCHEMAV_CVC_TOTALDIGITS_VALID                  =    1837
+        XML_SCHEMAV_CVC_FRACTIONDIGITS_VALID               =    1838
+        XML_SCHEMAV_CVC_PATTERN_VALID                      =    1839
+        XML_SCHEMAV_CVC_ENUMERATION_VALID                  =    1840
+        XML_SCHEMAV_CVC_COMPLEX_TYPE_2_1                   =    1841
+        XML_SCHEMAV_CVC_COMPLEX_TYPE_2_2                   =    1842
+        XML_SCHEMAV_CVC_COMPLEX_TYPE_2_3                   =    1843
+        XML_SCHEMAV_CVC_COMPLEX_TYPE_2_4                   =    1844
+        XML_SCHEMAV_CVC_ELT_1                              =    1845
+        XML_SCHEMAV_CVC_ELT_2                              =    1846
+        XML_SCHEMAV_CVC_ELT_3_1                            =    1847
+        XML_SCHEMAV_CVC_ELT_3_2_1                          =    1848
+        XML_SCHEMAV_CVC_ELT_3_2_2                          =    1849
+        XML_SCHEMAV_CVC_ELT_4_1                            =    1850
+        XML_SCHEMAV_CVC_ELT_4_2                            =    1851
+        XML_SCHEMAV_CVC_ELT_4_3                            =    1852
+        XML_SCHEMAV_CVC_ELT_5_1_1                          =    1853
+        XML_SCHEMAV_CVC_ELT_5_1_2                          =    1854
+        XML_SCHEMAV_CVC_ELT_5_2_1                          =    1855
+        XML_SCHEMAV_CVC_ELT_5_2_2_1                        =    1856
+        XML_SCHEMAV_CVC_ELT_5_2_2_2_1                      =    1857
+        XML_SCHEMAV_CVC_ELT_5_2_2_2_2                      =    1858
+        XML_SCHEMAV_CVC_ELT_6                              =    1859
+        XML_SCHEMAV_CVC_ELT_7                              =    1860
+        XML_SCHEMAV_CVC_ATTRIBUTE_1                        =    1861
+        XML_SCHEMAV_CVC_ATTRIBUTE_2                        =    1862
+        XML_SCHEMAV_CVC_ATTRIBUTE_3                        =    1863
+        XML_SCHEMAV_CVC_ATTRIBUTE_4                        =    1864
+        XML_SCHEMAV_CVC_COMPLEX_TYPE_3_1                   =    1865
+        XML_SCHEMAV_CVC_COMPLEX_TYPE_3_2_1                 =    1866
+        XML_SCHEMAV_CVC_COMPLEX_TYPE_3_2_2                 =    1867
+        XML_SCHEMAV_CVC_COMPLEX_TYPE_4                     =    1868
+        XML_SCHEMAV_CVC_COMPLEX_TYPE_5_1                   =    1869
+        XML_SCHEMAV_CVC_COMPLEX_TYPE_5_2                   =    1870
+        XML_SCHEMAV_ELEMENT_CONTENT                        =    1871
+        XML_SCHEMAV_DOCUMENT_ELEMENT_MISSING               =    1872
+        XML_SCHEMAV_CVC_COMPLEX_TYPE_1                     =    1873
+        XML_SCHEMAV_CVC_AU                                 =    1874
+        XML_SCHEMAV_CVC_TYPE_1                             =    1875
+        XML_SCHEMAV_CVC_TYPE_2                             =    1876
+        XML_SCHEMAV_CVC_IDC                                =    1877
+        XML_SCHEMAV_CVC_WILDCARD                           =    1878
+        XML_SCHEMAV_MISC                                   =    1879
+        XML_XPTR_UNKNOWN_SCHEME                            =    1900
+        XML_XPTR_CHILDSEQ_START                            =    1901
+        XML_XPTR_EVAL_FAILED                               =    1902
+        XML_XPTR_EXTRA_OBJECTS                             =    1903
+        XML_C14N_CREATE_CTXT                               =    1950
+        XML_C14N_REQUIRES_UTF8                             =    1951
+        XML_C14N_CREATE_STACK                              =    1952
+        XML_C14N_INVALID_NODE                              =    1953
+        XML_C14N_UNKNOW_NODE                               =    1954
+        XML_C14N_RELATIVE_NAMESPACE                        =    1955
+        XML_FTP_PASV_ANSWER                                =    2000
+        XML_FTP_EPSV_ANSWER                                =    2001
+        XML_FTP_ACCNT                                      =    2002
+        XML_FTP_URL_SYNTAX                                 =    2003
+        XML_HTTP_URL_SYNTAX                                =    2020
+        XML_HTTP_USE_IP                                    =    2021
+        XML_HTTP_UNKNOWN_HOST                              =    2022
+        XML_SCHEMAP_SRC_SIMPLE_TYPE_1                      =    3000
+        XML_SCHEMAP_SRC_SIMPLE_TYPE_2                      =    3001
+        XML_SCHEMAP_SRC_SIMPLE_TYPE_3                      =    3002
+        XML_SCHEMAP_SRC_SIMPLE_TYPE_4                      =    3003
+        XML_SCHEMAP_SRC_RESOLVE                            =    3004
+        XML_SCHEMAP_SRC_RESTRICTION_BASE_OR_SIMPLETYPE     =    3005
+        XML_SCHEMAP_SRC_LIST_ITEMTYPE_OR_SIMPLETYPE        =    3006
+        XML_SCHEMAP_SRC_UNION_MEMBERTYPES_OR_SIMPLETYPES   =    3007
+        XML_SCHEMAP_ST_PROPS_CORRECT_1                     =    3008
+        XML_SCHEMAP_ST_PROPS_CORRECT_2                     =    3009
+        XML_SCHEMAP_ST_PROPS_CORRECT_3                     =    3010
+        XML_SCHEMAP_COS_ST_RESTRICTS_1_1                   =    3011
+        XML_SCHEMAP_COS_ST_RESTRICTS_1_2                   =    3012
+        XML_SCHEMAP_COS_ST_RESTRICTS_1_3_1                 =    3013
+        XML_SCHEMAP_COS_ST_RESTRICTS_1_3_2                 =    3014
+        XML_SCHEMAP_COS_ST_RESTRICTS_2_1                   =    3015
+        XML_SCHEMAP_COS_ST_RESTRICTS_2_3_1_1               =    3016
+        XML_SCHEMAP_COS_ST_RESTRICTS_2_3_1_2               =    3017
+        XML_SCHEMAP_COS_ST_RESTRICTS_2_3_2_1               =    3018
+        XML_SCHEMAP_COS_ST_RESTRICTS_2_3_2_2               =    3019
+        XML_SCHEMAP_COS_ST_RESTRICTS_2_3_2_3               =    3020
+        XML_SCHEMAP_COS_ST_RESTRICTS_2_3_2_4               =    3021
+        XML_SCHEMAP_COS_ST_RESTRICTS_2_3_2_5               =    3022
+        XML_SCHEMAP_COS_ST_RESTRICTS_3_1                   =    3023
+        XML_SCHEMAP_COS_ST_RESTRICTS_3_3_1                 =    3024
+        XML_SCHEMAP_COS_ST_RESTRICTS_3_3_1_2               =    3025
+        XML_SCHEMAP_COS_ST_RESTRICTS_3_3_2_2               =    3026
+        XML_SCHEMAP_COS_ST_RESTRICTS_3_3_2_1               =    3027
+        XML_SCHEMAP_COS_ST_RESTRICTS_3_3_2_3               =    3028
+        XML_SCHEMAP_COS_ST_RESTRICTS_3_3_2_4               =    3029
+        XML_SCHEMAP_COS_ST_RESTRICTS_3_3_2_5               =    3030
+        XML_SCHEMAP_COS_ST_DERIVED_OK_2_1                  =    3031
+        XML_SCHEMAP_COS_ST_DERIVED_OK_2_2                  =    3032
+        XML_SCHEMAP_S4S_ELEM_NOT_ALLOWED                   =    3033
+        XML_SCHEMAP_S4S_ELEM_MISSING                       =    3034
+        XML_SCHEMAP_S4S_ATTR_NOT_ALLOWED                   =    3035
+        XML_SCHEMAP_S4S_ATTR_MISSING                       =    3036
+        XML_SCHEMAP_S4S_ATTR_INVALID_VALUE                 =    3037
+        XML_SCHEMAP_SRC_ELEMENT_1                          =    3038
+        XML_SCHEMAP_SRC_ELEMENT_2_1                        =    3039
+        XML_SCHEMAP_SRC_ELEMENT_2_2                        =    3040
+        XML_SCHEMAP_SRC_ELEMENT_3                          =    3041
+        XML_SCHEMAP_P_PROPS_CORRECT_1                      =    3042
+        XML_SCHEMAP_P_PROPS_CORRECT_2_1                    =    3043
+        XML_SCHEMAP_P_PROPS_CORRECT_2_2                    =    3044
+        XML_SCHEMAP_E_PROPS_CORRECT_2                      =    3045
+        XML_SCHEMAP_E_PROPS_CORRECT_3                      =    3046
+        XML_SCHEMAP_E_PROPS_CORRECT_4                      =    3047
+        XML_SCHEMAP_E_PROPS_CORRECT_5                      =    3048
+        XML_SCHEMAP_E_PROPS_CORRECT_6                      =    3049
+        XML_SCHEMAP_SRC_INCLUDE                            =    3050
+        XML_SCHEMAP_SRC_ATTRIBUTE_1                        =    3051
+        XML_SCHEMAP_SRC_ATTRIBUTE_2                        =    3052
+        XML_SCHEMAP_SRC_ATTRIBUTE_3_1                      =    3053
+        XML_SCHEMAP_SRC_ATTRIBUTE_3_2                      =    3054
+        XML_SCHEMAP_SRC_ATTRIBUTE_4                        =    3055
+        XML_SCHEMAP_NO_XMLNS                               =    3056
+        XML_SCHEMAP_NO_XSI                                 =    3057
+        XML_SCHEMAP_COS_VALID_DEFAULT_1                    =    3058
+        XML_SCHEMAP_COS_VALID_DEFAULT_2_1                  =    3059
+        XML_SCHEMAP_COS_VALID_DEFAULT_2_2_1                =    3060
+        XML_SCHEMAP_COS_VALID_DEFAULT_2_2_2                =    3061
+        XML_SCHEMAP_CVC_SIMPLE_TYPE                        =    3062
+        XML_SCHEMAP_COS_CT_EXTENDS_1_1                     =    3063
+        XML_SCHEMAP_SRC_IMPORT_1_1                         =    3064
+        XML_SCHEMAP_SRC_IMPORT_1_2                         =    3065
+        XML_SCHEMAP_SRC_IMPORT_2                           =    3066
+        XML_SCHEMAP_SRC_IMPORT_2_1                         =    3067
+        XML_SCHEMAP_SRC_IMPORT_2_2                         =    3068
+        XML_SCHEMAP_INTERNAL                               =    3069
+        XML_SCHEMAP_NOT_DETERMINISTIC                      =    3070
+        XML_SCHEMAP_SRC_ATTRIBUTE_GROUP_1                  =    3071
+        XML_SCHEMAP_SRC_ATTRIBUTE_GROUP_2                  =    3072
+        XML_SCHEMAP_SRC_ATTRIBUTE_GROUP_3                  =    3073
+        XML_SCHEMAP_MG_PROPS_CORRECT_1                     =    3074
+        XML_SCHEMAP_MG_PROPS_CORRECT_2                     =    3075
+        XML_SCHEMAP_SRC_CT_1                               =    3076
+        XML_SCHEMAP_DERIVATION_OK_RESTRICTION_2_1_3        =    3077
+        XML_SCHEMAP_AU_PROPS_CORRECT_2                     =    3078
+        XML_SCHEMAP_A_PROPS_CORRECT_2                      =    3079
+        XML_SCHEMAP_C_PROPS_CORRECT                        =    3080
+        XML_SCHEMAP_SRC_REDEFINE                           =    3081
+        XML_SCHEMAP_SRC_IMPORT                             =    3082
+        XML_SCHEMAP_WARN_SKIP_SCHEMA                       =    3083
+        XML_SCHEMAP_WARN_UNLOCATED_SCHEMA                  =    3084
+        XML_SCHEMAP_WARN_ATTR_REDECL_PROH                  =    3085
+        XML_SCHEMAP_WARN_ATTR_POINTLESS_PROH               =    3086
+        XML_SCHEMAP_AG_PROPS_CORRECT                       =    3087
+        XML_SCHEMAP_COS_CT_EXTENDS_1_2                     =    3088
+        XML_SCHEMAP_AU_PROPS_CORRECT                       =    3089
+        XML_SCHEMAP_A_PROPS_CORRECT_3                      =    3090
+        XML_SCHEMAP_COS_ALL_LIMITED                        =    3091
+        XML_SCHEMATRONV_ASSERT                             =    4000
+        XML_SCHEMATRONV_REPORT                             =    4001
+        XML_MODULE_OPEN                                    =    4900
+        XML_MODULE_CLOSE                                   =    4901
+        XML_CHECK_FOUND_ELEMENT                            =    5000
+        XML_CHECK_FOUND_ATTRIBUTE                          =    5001
+        XML_CHECK_FOUND_TEXT                               =    5002
+        XML_CHECK_FOUND_CDATA                              =    5003
+        XML_CHECK_FOUND_ENTITYREF                          =    5004
+        XML_CHECK_FOUND_ENTITY                             =    5005
+        XML_CHECK_FOUND_PI                                 =    5006
+        XML_CHECK_FOUND_COMMENT                            =    5007
+        XML_CHECK_FOUND_DOCTYPE                            =    5008
+        XML_CHECK_FOUND_FRAGMENT                           =    5009
+        XML_CHECK_FOUND_NOTATION                           =    5010
+        XML_CHECK_UNKNOWN_NODE                             =    5011
+        XML_CHECK_ENTITY_TYPE                              =    5012
+        XML_CHECK_NO_PARENT                                =    5013
+        XML_CHECK_NO_DOC                                   =    5014
+        XML_CHECK_NO_NAME                                  =    5015
+        XML_CHECK_NO_ELEM                                  =    5016
+        XML_CHECK_WRONG_DOC                                =    5017
+        XML_CHECK_NO_PREV                                  =    5018
+        XML_CHECK_WRONG_PREV                               =    5019
+        XML_CHECK_NO_NEXT                                  =    5020
+        XML_CHECK_WRONG_NEXT                               =    5021
+        XML_CHECK_NOT_DTD                                  =    5022
+        XML_CHECK_NOT_ATTR                                 =    5023
+        XML_CHECK_NOT_ATTR_DECL                            =    5024
+        XML_CHECK_NOT_ELEM_DECL                            =    5025
+        XML_CHECK_NOT_ENTITY_DECL                          =    5026
+        XML_CHECK_NOT_NS_DECL                              =    5027
+        XML_CHECK_NO_HREF                                  =    5028
+        XML_CHECK_WRONG_PARENT                             =    5029
+        XML_CHECK_NS_SCOPE                                 =    5030
+        XML_CHECK_NS_ANCESTOR                              =    5031
+        XML_CHECK_NOT_UTF8                                 =    5032
+        XML_CHECK_NO_DICT                                  =    5033
+        XML_CHECK_NOT_NCNAME                               =    5034
+        XML_CHECK_OUTSIDE_DICT                             =    5035
+        XML_CHECK_WRONG_NAME                               =    5036
+        XML_CHECK_NAME_NOT_NULL                            =    5037
+        XML_I18N_NO_NAME                                   =    6000
+        XML_I18N_NO_HANDLER                                =    6001
+        XML_I18N_EXCESS_HANDLER                            =    6002
+        XML_I18N_CONV_FAILED                               =    6003
+        XML_I18N_NO_OUTPUT                                 =    6004
+        XML_BUF_OVERFLOW                                   =    7000
+
+    ctypedef enum xmlRelaxNGValidErr:
+        XML_RELAXNG_OK                                     =       0
+        XML_RELAXNG_ERR_MEMORY                             =       1
+        XML_RELAXNG_ERR_TYPE                               =       2
+        XML_RELAXNG_ERR_TYPEVAL                            =       3
+        XML_RELAXNG_ERR_DUPID                              =       4
+        XML_RELAXNG_ERR_TYPECMP                            =       5
+        XML_RELAXNG_ERR_NOSTATE                            =       6
+        XML_RELAXNG_ERR_NODEFINE                           =       7
+        XML_RELAXNG_ERR_LISTEXTRA                          =       8
+        XML_RELAXNG_ERR_LISTEMPTY                          =       9
+        XML_RELAXNG_ERR_INTERNODATA                        =      10
+        XML_RELAXNG_ERR_INTERSEQ                           =      11
+        XML_RELAXNG_ERR_INTEREXTRA                         =      12
+        XML_RELAXNG_ERR_ELEMNAME                           =      13
+        XML_RELAXNG_ERR_ATTRNAME                           =      14
+        XML_RELAXNG_ERR_ELEMNONS                           =      15
+        XML_RELAXNG_ERR_ATTRNONS                           =      16
+        XML_RELAXNG_ERR_ELEMWRONGNS                        =      17
+        XML_RELAXNG_ERR_ATTRWRONGNS                        =      18
+        XML_RELAXNG_ERR_ELEMEXTRANS                        =      19
+        XML_RELAXNG_ERR_ATTREXTRANS                        =      20
+        XML_RELAXNG_ERR_ELEMNOTEMPTY                       =      21
+        XML_RELAXNG_ERR_NOELEM                             =      22
+        XML_RELAXNG_ERR_NOTELEM                            =      23
+        XML_RELAXNG_ERR_ATTRVALID                          =      24
+        XML_RELAXNG_ERR_CONTENTVALID                       =      25
+        XML_RELAXNG_ERR_EXTRACONTENT                       =      26
+        XML_RELAXNG_ERR_INVALIDATTR                        =      27
+        XML_RELAXNG_ERR_DATAELEM                           =      28
+        XML_RELAXNG_ERR_VALELEM                            =      29
+        XML_RELAXNG_ERR_LISTELEM                           =      30
+        XML_RELAXNG_ERR_DATATYPE                           =      31
+        XML_RELAXNG_ERR_VALUE                              =      32
+        XML_RELAXNG_ERR_LIST                               =      33
+        XML_RELAXNG_ERR_NOGRAMMAR                          =      34
+        XML_RELAXNG_ERR_EXTRADATA                          =      35
+        XML_RELAXNG_ERR_LACKDATA                           =      36
+        XML_RELAXNG_ERR_INTERNAL                           =      37
+        XML_RELAXNG_ERR_ELEMWRONG                          =      38
+        XML_RELAXNG_ERR_TEXTWRONG                          =      39
+# --- END: GENERATED CONSTANTS ---
+
+cdef extern from "libxml/xmlerror.h" nogil:
+    ctypedef struct xmlError:
+        int domain
+        int code
+        char* message
+        xmlErrorLevel level
+        char* file
+        char* str1
+        char* str2
+        char* str3
+        int line
+        int int1
+        int int2
+        void* node
+
+    ctypedef void (*xmlGenericErrorFunc)(void* ctxt, char* msg, ...) noexcept
+    ctypedef void (*xmlStructuredErrorFunc)(void* userData,
+                                            const xmlError* error) noexcept
+
+    cdef void xmlSetGenericErrorFunc(
+        void* ctxt, xmlGenericErrorFunc func)
+    cdef void xmlSetStructuredErrorFunc(
+        void* ctxt, xmlStructuredErrorFunc func)
+
+cdef extern from "libxml/globals.h" nogil:
+    cdef xmlStructuredErrorFunc xmlStructuredError
+    cdef void* xmlStructuredErrorContext

.venv/lib/python3.12/site-packages/lxml/includes/xmlparser.pxd

@@ -0,0 +1,319 @@
+from libc.string cimport const_char
+
+from lxml.includes.tree cimport (
+    xmlDoc, xmlNode, xmlEntity, xmlDict, xmlDtd, xmlChar, const_xmlChar)
+from lxml.includes.tree cimport xmlInputReadCallback, xmlInputCloseCallback
+from lxml.includes.xmlerror cimport xmlError, xmlStructuredErrorFunc, xmlErrorLevel
+
+
+cdef extern from "libxml/parser.h" nogil:
+    ctypedef void (*startElementNsSAX2Func)(void* ctx,
+                                            const_xmlChar* localname,
+                                            const_xmlChar* prefix,
+                                            const_xmlChar* URI,
+                                            int nb_namespaces,
+                                            const_xmlChar** namespaces,
+                                            int nb_attributes,
+                                            int nb_defaulted,
+                                            const_xmlChar** attributes) noexcept
+
+    ctypedef void (*endElementNsSAX2Func)(void* ctx,
+                                          const_xmlChar* localname,
+                                          const_xmlChar* prefix,
+                                          const_xmlChar* URI) noexcept
+
+    ctypedef void (*startElementSAXFunc)(void* ctx, const_xmlChar* name, const_xmlChar** atts) noexcept
+
+    ctypedef void (*endElementSAXFunc)(void* ctx, const_xmlChar* name) noexcept
+
+    ctypedef void (*charactersSAXFunc)(void* ctx, const_xmlChar* ch, int len) noexcept
+
+    ctypedef void (*cdataBlockSAXFunc)(void* ctx, const_xmlChar* value, int len) noexcept
+
+    ctypedef void (*commentSAXFunc)(void* ctx, const_xmlChar* value) noexcept
+
+    ctypedef void (*processingInstructionSAXFunc)(void* ctx,
+                                                  const_xmlChar* target,
+                                                  const_xmlChar* data) noexcept
+
+    ctypedef void (*internalSubsetSAXFunc)(void* ctx,
+                                            const_xmlChar* name,
+                                            const_xmlChar* externalID,
+                                            const_xmlChar* systemID) noexcept
+
+    ctypedef void (*endDocumentSAXFunc)(void* ctx) noexcept
+
+    ctypedef void (*startDocumentSAXFunc)(void* ctx) noexcept
+
+    ctypedef void (*referenceSAXFunc)(void * ctx, const_xmlChar* name) noexcept
+
+    ctypedef xmlEntity* (*getEntitySAXFunc)(void* ctx, const_xmlChar* name) noexcept
+
+    cdef int XML_SAX2_MAGIC
+
+cdef extern from "libxml/tree.h" nogil:
+    ctypedef struct xmlParserInput:
+        int line
+        int col
+        int length
+        const_xmlChar* base
+        const_xmlChar* cur
+        const_xmlChar* end
+        const_char *filename
+
+    ctypedef struct xmlParserInputBuffer:
+        void* context
+        xmlInputReadCallback  readcallback
+        xmlInputCloseCallback closecallback
+
+    ctypedef struct xmlSAXHandlerV1:
+        # same as xmlSAXHandler, but without namespaces
+        pass
+
+    ctypedef struct xmlSAXHandler:
+        internalSubsetSAXFunc           internalSubset
+        startElementNsSAX2Func          startElementNs
+        endElementNsSAX2Func            endElementNs
+        startElementSAXFunc             startElement
+        endElementSAXFunc               endElement
+        charactersSAXFunc               characters
+        cdataBlockSAXFunc               cdataBlock
+        referenceSAXFunc                reference
+        getEntitySAXFunc                getEntity
+        getEntitySAXFunc                getParameterEntity
+        commentSAXFunc                  comment
+        processingInstructionSAXFunc	processingInstruction
+        startDocumentSAXFunc            startDocument
+        endDocumentSAXFunc              endDocument
+        int                             initialized
+        xmlStructuredErrorFunc          serror
+        void*                           _private
+
+
+cdef extern from "libxml/SAX2.h" nogil:
+    cdef void xmlSAX2StartDocument(void* ctxt)
+
+
+cdef extern from "libxml/xmlIO.h" nogil:
+    cdef xmlParserInputBuffer* xmlAllocParserInputBuffer(int enc)
+
+
+cdef extern from "libxml/parser.h" nogil:
+
+    ctypedef enum xmlFeature:
+        XML_WITH_THREAD = 1
+        XML_WITH_TREE = 2
+        XML_WITH_OUTPUT = 3
+        XML_WITH_PUSH = 4
+        XML_WITH_READER = 5
+        XML_WITH_PATTERN = 6
+        XML_WITH_WRITER = 7
+        XML_WITH_SAX1 = 8
+        XML_WITH_FTP = 9
+        XML_WITH_HTTP = 10
+        XML_WITH_VALID = 11
+        XML_WITH_HTML = 12
+        XML_WITH_LEGACY = 13
+        XML_WITH_C14N = 14
+        XML_WITH_CATALOG = 15
+        XML_WITH_XPATH = 16
+        XML_WITH_XPTR = 17
+        XML_WITH_XINCLUDE = 18
+        XML_WITH_ICONV = 19
+        XML_WITH_ISO8859X = 20
+        XML_WITH_UNICODE = 21
+        XML_WITH_REGEXP = 22
+        XML_WITH_AUTOMATA = 23
+        XML_WITH_EXPR = 24
+        XML_WITH_SCHEMAS = 25
+        XML_WITH_SCHEMATRON = 26
+        XML_WITH_MODULES = 27
+        XML_WITH_DEBUG = 28
+        XML_WITH_DEBUG_MEM = 29
+        XML_WITH_DEBUG_RUN = 30
+        XML_WITH_ZLIB = 31
+        XML_WITH_ICU = 32
+        XML_WITH_LZMA = 33
+
+    cdef bint xmlHasFeature(xmlFeature feature)
+
+    cdef xmlDict* xmlDictCreate()
+    cdef xmlDict* xmlDictCreateSub(xmlDict* subdict)
+    cdef void xmlDictFree(xmlDict* sub)
+    cdef int xmlDictReference(xmlDict* dict)
+
+    cdef int XML_COMPLETE_ATTRS  # SAX option for adding DTD default attributes
+    cdef int XML_SKIP_IDS        # SAX option for not building an XML ID dict
+
+    ctypedef enum xmlParserInputState:
+        XML_PARSER_EOF = -1  # nothing is to be parsed
+        XML_PARSER_START = 0  # nothing has been parsed
+        XML_PARSER_MISC = 1  # Misc* before int subset
+        XML_PARSER_PI = 2  # Within a processing instruction
+        XML_PARSER_DTD = 3  # within some DTD content
+        XML_PARSER_PROLOG = 4  # Misc* after internal subset
+        XML_PARSER_COMMENT = 5  # within a comment
+        XML_PARSER_START_TAG = 6  # within a start tag
+        XML_PARSER_CONTENT = 7  # within the content
+        XML_PARSER_CDATA_SECTION = 8  # within a CDATA section
+        XML_PARSER_END_TAG = 9  # within a closing tag
+        XML_PARSER_ENTITY_DECL = 10  # within an entity declaration
+        XML_PARSER_ENTITY_VALUE = 11  # within an entity value in a decl
+        XML_PARSER_ATTRIBUTE_VALUE = 12  # within an attribute value
+        XML_PARSER_SYSTEM_LITERAL = 13  # within a SYSTEM value
+        XML_PARSER_EPILOG = 14  # the Misc* after the last end tag
+        XML_PARSER_IGNORE = 15  # within an IGNORED section
+        XML_PARSER_PUBLIC_LITERAL = 16  # within a PUBLIC value
+
+
+    ctypedef struct xmlParserCtxt:
+        xmlDoc* myDoc
+        xmlDict* dict
+        int dictNames
+        void* _private
+        bint wellFormed
+        bint recovery
+        int options
+        bint disableSAX
+        int errNo
+        xmlParserInputState instate
+        bint replaceEntities
+        int loadsubset  # != 0 if enabled, int value == why
+        bint validate
+        xmlError lastError
+        xmlNode* node
+        xmlSAXHandler* sax
+        void* userData
+        int* spaceTab
+        int spaceMax
+        int nsNr
+        bint html
+        bint progressive
+        int inSubset
+        int charset
+        xmlParserInput* input
+        int inputNr
+        xmlParserInput* inputTab[]
+
+    ctypedef enum xmlParserOption:
+        XML_PARSE_RECOVER = 0x1                   # recover on errors
+        XML_PARSE_NOENT = 0x2                     # substitute entities
+        XML_PARSE_DTDLOAD = 0x4                   # load the external subset
+        XML_PARSE_DTDATTR = 0x8                   # default DTD attributes
+        XML_PARSE_DTDVALID = 0x10                 # validate with the DTD
+        XML_PARSE_NOERROR = 0x20                  # suppress error reports
+        XML_PARSE_NOWARNING = 0x40                # suppress warning reports
+        XML_PARSE_PEDANTIC = 0x80                 # pedantic error reporting
+        XML_PARSE_NOBLANKS = 0x100                # remove blank nodes
+        XML_PARSE_SAX1 = 0x200                    # use the SAX1 interface internally
+        XML_PARSE_XINCLUDE = 0x400                # Implement XInclude substitution
+        XML_PARSE_NONET = 0x800                   # Forbid network access
+        XML_PARSE_NODICT = 0x1000                 # Do not reuse the context dictionary
+        XML_PARSE_NSCLEAN = 0x2000                # remove redundant namespaces declarations
+        XML_PARSE_NOCDATA = 0x4000                # merge CDATA as text nodes
+        XML_PARSE_NOXINCNODE = 0x8000             # do not generate XINCLUDE START/END nodes
+        # libxml2 2.6.21+ only:
+        XML_PARSE_COMPACT = 0x1_0000              # compact small text nodes
+        # libxml2 2.7.0+ only:
+        XML_PARSE_OLD10 = 0x2_0000                # parse using XML-1.0 before update 5
+        XML_PARSE_NOBASEFIX = 0x4_0000            # do not fixup XINCLUDE xml:base uris
+        XML_PARSE_HUGE = 0x8_0000                 # relax any hardcoded limit from the parser
+        # libxml2 2.7.3+ only:
+        XML_PARSE_OLDSAX = 0x10_0000              # parse using SAX2 interface before 2.7.0
+        # libxml2 2.8.0+ only:
+        XML_PARSE_IGNORE_ENC = 0x20_0000          # ignore internal document encoding hint
+        # libxml2 2.9.0+ only:
+        XML_PARSE_BIG_LINES = 0x40_0000           # Store big lines numbers in text PSVI field
+        # libxml2 2.13.0+ only:
+        XML_PARSE_NO_XXE = 0x80_0000              # Disable loading of external DTDs or entities
+        # libxml2 2.14.0+ only:
+        XML_PARSE_UNZIP = 0x100_0000              # Enable input decompression (and potential gzip bombs)
+        XML_PARSE_NO_SYS_CATALOG = 0x200_0000     # Disable the global system XML catalog
+        XML_PARSE_CATALOG_PI = 0x400_0000         # Enable XML catalog processing instructions
+        # libxml2 2.15.0+ only:
+        XML_PARSE_SKIP_IDS = 0x800_0000           # Force the parser to ignore IDs
+
+    cdef void xmlInitParser()
+    cdef void xmlCleanupParser()
+
+    cdef int xmlLineNumbersDefault(int onoff)
+    cdef xmlParserCtxt* xmlNewParserCtxt()
+    cdef xmlParserInput* xmlNewIOInputStream(xmlParserCtxt* ctxt,
+                                             xmlParserInputBuffer* input,
+                                             int enc)
+    cdef int xmlCtxtUseOptions(xmlParserCtxt* ctxt, int options)
+    cdef void xmlFreeParserCtxt(xmlParserCtxt* ctxt)
+    cdef void xmlCtxtReset(xmlParserCtxt* ctxt)
+    cdef void xmlClearParserCtxt(xmlParserCtxt* ctxt)
+    cdef int xmlParseChunk(xmlParserCtxt* ctxt,
+                           char* chunk, int size, int terminate)
+    cdef xmlDoc* xmlCtxtReadDoc(xmlParserCtxt* ctxt,
+                                char* cur, char* URL, char* encoding,
+                                int options)
+    cdef xmlDoc* xmlCtxtReadFile(xmlParserCtxt* ctxt,
+                                 char* filename, char* encoding,
+                                 int options)
+    cdef xmlDoc* xmlCtxtReadIO(xmlParserCtxt* ctxt,
+                               xmlInputReadCallback ioread,
+                               xmlInputCloseCallback ioclose,
+                               void* ioctx,
+                               char* URL, char* encoding,
+                               int options)
+    cdef xmlDoc* xmlCtxtReadMemory(xmlParserCtxt* ctxt,
+                                   char* buffer, int size,
+                                   char* filename, const_char* encoding,
+                                   int options)
+
+    cdef void xmlErrParser(xmlParserCtxt* ctxt, xmlNode* node,
+                           int domain, int code, xmlErrorLevel level,
+                           const xmlChar *str1, const xmlChar *str2, const xmlChar *str3,
+                           int int1, const char *msg, ...)
+
+
+# iterparse:
+
+    cdef xmlParserCtxt* xmlCreatePushParserCtxt(xmlSAXHandler* sax,
+                                                void* user_data,
+                                                char* chunk,
+                                                int size,
+                                                char* filename)
+
+    cdef int xmlCtxtResetPush(xmlParserCtxt* ctxt,
+                              char* chunk,
+                              int size,
+                              char* filename,
+                              char* encoding)
+
+# entity loaders:
+
+    ctypedef xmlParserInput* (*xmlExternalEntityLoader)(
+        const_char * URL, const_char * ID, xmlParserCtxt* context) noexcept
+    cdef xmlExternalEntityLoader xmlGetExternalEntityLoader()
+    cdef void xmlSetExternalEntityLoader(xmlExternalEntityLoader f)
+
+    cdef xmlEntity* xmlSAX2GetEntity(void* ctxt, const_xmlChar* name) noexcept
+
+# DTDs:
+
+    cdef xmlDtd* xmlParseDTD(const_xmlChar* ExternalID, const_xmlChar* SystemID)
+    cdef xmlDtd* xmlIOParseDTD(xmlSAXHandler* sax,
+                               xmlParserInputBuffer* input,
+                               int enc)
+
+
+cdef extern from "libxml/parserInternals.h" nogil:
+    """
+    #if LIBXML_VERSION < 21400
+    #define xmlNewInputFromMemory(url, mem, size, flags)  (NULL)
+    #endif
+    """
+    cdef xmlParserInput* xmlNewInputStream(xmlParserCtxt* ctxt)
+    cdef xmlParserInput* xmlNewStringInputStream(xmlParserCtxt* ctxt,
+                                                 char* buffer)
+    cdef xmlParserInput* xmlNewInputFromFile(xmlParserCtxt* ctxt,
+                                             char* filename)
+    cdef xmlParserInput* xmlNewInputFromMemory(
+        const char *url, const void *mem, size_t size, int flags)  # actually "xmlParserInputFlags flags"
+    cdef void xmlFreeInputStream(xmlParserInput* input)
+    cdef int xmlSwitchEncoding(xmlParserCtxt* ctxt, int enc)
+    cdef bint xmlCtxtIsStopped(xmlParserCtxt* ctxt)

.venv/lib/python3.12/site-packages/lxml/includes/xmlschema.pxd

@@ -0,0 +1,35 @@
+from lxml.includes.tree cimport xmlDoc
+from lxml.includes.xmlparser cimport xmlSAXHandler
+from lxml.includes.xmlerror cimport xmlStructuredErrorFunc
+
+cdef extern from "libxml/xmlschemas.h" nogil:
+    ctypedef struct xmlSchema
+    ctypedef struct xmlSchemaParserCtxt
+
+    ctypedef struct xmlSchemaSAXPlugStruct
+    ctypedef struct xmlSchemaValidCtxt
+
+    ctypedef enum xmlSchemaValidOption:
+        XML_SCHEMA_VAL_VC_I_CREATE = 1
+
+    cdef xmlSchemaValidCtxt* xmlSchemaNewValidCtxt(xmlSchema* schema) nogil
+    cdef void xmlSchemaSetParserStructuredErrors(xmlSchemaParserCtxt* ctxt,
+        xmlStructuredErrorFunc serror, void *ctx)
+    cdef void xmlSchemaSetValidStructuredErrors(xmlSchemaValidCtxt* ctxt,
+        xmlStructuredErrorFunc serror, void *ctx)
+
+    cdef int xmlSchemaValidateDoc(xmlSchemaValidCtxt* ctxt, xmlDoc* doc) nogil
+    cdef xmlSchema* xmlSchemaParse(xmlSchemaParserCtxt* ctxt) nogil
+    cdef xmlSchemaParserCtxt* xmlSchemaNewParserCtxt(char* URL) nogil
+    cdef xmlSchemaParserCtxt* xmlSchemaNewDocParserCtxt(xmlDoc* doc) nogil
+    cdef void xmlSchemaFree(xmlSchema* schema) nogil
+    cdef void xmlSchemaFreeParserCtxt(xmlSchemaParserCtxt* ctxt) nogil
+    cdef void xmlSchemaFreeValidCtxt(xmlSchemaValidCtxt* ctxt) nogil
+    cdef int xmlSchemaSetValidOptions(xmlSchemaValidCtxt* ctxt,
+                                      int options) nogil
+
+    cdef xmlSchemaSAXPlugStruct* xmlSchemaSAXPlug(xmlSchemaValidCtxt* ctxt,
+                                                  xmlSAXHandler** sax,
+                                                  void** data) nogil
+    cdef int xmlSchemaSAXUnplug(xmlSchemaSAXPlugStruct* sax_plug)
+    cdef int xmlSchemaIsValid(xmlSchemaValidCtxt* ctxt)

.venv/lib/python3.12/site-packages/lxml/includes/xpath.pxd

@@ -0,0 +1,136 @@
+from lxml.includes cimport tree
+from lxml.includes cimport xmlerror
+
+from libc.string cimport const_char
+from lxml.includes.tree cimport xmlChar, const_xmlChar
+
+
+cdef extern from "libxml/xpath.h" nogil:
+    ctypedef enum xmlXPathObjectType:
+        XPATH_UNDEFINED = 0
+        XPATH_NODESET = 1
+        XPATH_BOOLEAN = 2
+        XPATH_NUMBER = 3
+        XPATH_STRING = 4
+        XPATH_POINT = 5
+        XPATH_RANGE = 6
+        XPATH_LOCATIONSET = 7
+        XPATH_USERS = 8
+        XPATH_XSLT_TREE = 9
+
+    ctypedef enum xmlXPathError:
+        XPATH_EXPRESSION_OK = 0
+        XPATH_NUMBER_ERROR = 1
+        XPATH_UNFINISHED_LITERAL_ERROR = 2
+        XPATH_START_LITERAL_ERROR = 3
+        XPATH_VARIABLE_REF_ERROR = 4
+        XPATH_UNDEF_VARIABLE_ERROR = 5
+        XPATH_INVALID_PREDICATE_ERROR = 6
+        XPATH_EXPR_ERROR = 7
+        XPATH_UNCLOSED_ERROR = 8
+        XPATH_UNKNOWN_FUNC_ERROR = 9
+        XPATH_INVALID_OPERAND = 10
+        XPATH_INVALID_TYPE = 11
+        XPATH_INVALID_ARITY = 12
+        XPATH_INVALID_CTXT_SIZE = 13
+        XPATH_INVALID_CTXT_POSITION = 14
+        XPATH_MEMORY_ERROR = 15
+        XPTR_SYNTAX_ERROR = 16
+        XPTR_RESOURCE_ERROR = 17
+        XPTR_SUB_RESOURCE_ERROR = 18
+        XPATH_UNDEF_PREFIX_ERROR = 19
+        XPATH_ENCODING_ERROR = 20
+        XPATH_INVALID_CHAR_ERROR = 21
+        XPATH_INVALID_CTXT = 22
+
+    ctypedef struct xmlNodeSet:
+        int nodeNr
+        int nodeMax
+        tree.xmlNode** nodeTab
+        
+    ctypedef struct xmlXPathObject:
+        xmlXPathObjectType type
+        xmlNodeSet* nodesetval
+        bint boolval
+        double floatval
+        xmlChar* stringval
+
+    ctypedef struct xmlXPathContext:
+        tree.xmlDoc* doc
+        tree.xmlNode* node
+        tree.xmlDict* dict
+        tree.xmlHashTable* nsHash
+        const_xmlChar* function
+        const_xmlChar* functionURI
+        xmlerror.xmlStructuredErrorFunc error
+        xmlerror.xmlError lastError
+        void* userData
+
+    ctypedef struct xmlXPathParserContext:
+        xmlXPathContext* context
+        xmlXPathObject* value
+        tree.xmlNode* ancestor
+        int error
+
+    ctypedef struct xmlXPathCompExpr
+
+    ctypedef void (*xmlXPathFunction)(xmlXPathParserContext* ctxt, int nargs)
+    ctypedef xmlXPathFunction (*xmlXPathFuncLookupFunc)(void* ctxt,
+                                                        const_xmlChar* name,
+                                                        const_xmlChar* ns_uri)
+    
+    cdef xmlXPathContext* xmlXPathNewContext(tree.xmlDoc* doc)
+    cdef xmlXPathObject* xmlXPathEvalExpression(const_xmlChar* str,
+                                                xmlXPathContext* ctxt)
+    cdef xmlXPathObject* xmlXPathCompiledEval(xmlXPathCompExpr* comp,
+                                              xmlXPathContext* ctxt)
+    cdef xmlXPathCompExpr* xmlXPathCompile(const_xmlChar* str)
+    cdef xmlXPathCompExpr* xmlXPathCtxtCompile(xmlXPathContext* ctxt,
+                                               const_xmlChar* str)
+    cdef void xmlXPathFreeContext(xmlXPathContext* ctxt)
+    cdef void xmlXPathFreeCompExpr(xmlXPathCompExpr* comp)
+    cdef void xmlXPathFreeObject(xmlXPathObject* obj)
+    cdef int xmlXPathRegisterNs(xmlXPathContext* ctxt,
+                                const_xmlChar* prefix, const_xmlChar* ns_uri)
+    
+    cdef xmlNodeSet* xmlXPathNodeSetCreate(tree.xmlNode* val)
+    cdef void xmlXPathFreeNodeSet(xmlNodeSet* val)
+
+
+cdef extern from "libxml/xpathInternals.h" nogil:
+    cdef int xmlXPathRegisterFunc(xmlXPathContext* ctxt,
+                                  const_xmlChar* name,
+                                  xmlXPathFunction f)
+    cdef int xmlXPathRegisterFuncNS(xmlXPathContext* ctxt,
+                                    const_xmlChar* name,
+                                    const_xmlChar* ns_uri,
+                                    xmlXPathFunction f)
+    cdef void xmlXPathRegisterFuncLookup(xmlXPathContext *ctxt,
+                                         xmlXPathFuncLookupFunc f,
+                                         void *funcCtxt)
+    cdef int xmlXPathRegisterVariable(xmlXPathContext *ctxt, 
+                                      const_xmlChar* name,
+                                      xmlXPathObject* value)
+    cdef int xmlXPathRegisterVariableNS(xmlXPathContext *ctxt, 
+                                        const_xmlChar* name,
+                                        const_xmlChar* ns_uri,
+                                        xmlXPathObject* value)
+    cdef void xmlXPathRegisteredVariablesCleanup(xmlXPathContext *ctxt)
+    cdef void xmlXPathRegisteredNsCleanup(xmlXPathContext *ctxt)
+    cdef xmlXPathObject* valuePop (xmlXPathParserContext *ctxt)
+    cdef int valuePush(xmlXPathParserContext* ctxt, xmlXPathObject *value)
+    
+    cdef xmlXPathObject* xmlXPathNewCString(const_char *val)
+    cdef xmlXPathObject* xmlXPathWrapCString(const_char * val)
+    cdef xmlXPathObject* xmlXPathNewString(const_xmlChar *val)
+    cdef xmlXPathObject* xmlXPathWrapString(const_xmlChar * val)
+    cdef xmlXPathObject* xmlXPathNewFloat(double val)
+    cdef xmlXPathObject* xmlXPathNewBoolean(int val)
+    cdef xmlXPathObject* xmlXPathNewNodeSet(tree.xmlNode* val)
+    cdef xmlXPathObject* xmlXPathNewValueTree(tree.xmlNode* val)
+    cdef void xmlXPathNodeSetAdd(xmlNodeSet* cur,
+                                  tree.xmlNode* val)
+    cdef void xmlXPathNodeSetAddUnique(xmlNodeSet* cur,
+                                        tree.xmlNode* val)
+    cdef xmlXPathObject* xmlXPathWrapNodeSet(xmlNodeSet* val)
+    cdef void xmlXPathErr(xmlXPathParserContext* ctxt, int error)

.venv/lib/python3.12/site-packages/lxml/includes/xslt.pxd

@@ -0,0 +1,190 @@
+from lxml.includes.tree cimport xmlDoc, xmlNode, xmlDict, xmlChar, const_xmlChar, xmlOutputBuffer
+from lxml.includes.xmlerror cimport xmlGenericErrorFunc
+from lxml.includes.xpath cimport xmlXPathContext, xmlXPathFunction
+
+from libc.string cimport const_char
+
+cdef extern from "libxslt/xslt.h":
+    cdef int xsltLibxsltVersion
+    cdef int xsltMaxDepth
+
+cdef extern from "libxslt/xsltconfig.h":
+    cdef int LIBXSLT_VERSION
+
+cdef extern from "libxslt/xsltInternals.h" nogil:
+    ctypedef enum xsltTransformState:
+        XSLT_STATE_OK       # 0
+        XSLT_STATE_ERROR    # 1
+        XSLT_STATE_STOPPED  # 2
+
+    ctypedef struct xsltDocument:
+        xmlDoc* doc
+
+    ctypedef struct xsltStylesheet:
+        xmlChar* encoding
+        xmlDoc* doc
+        int errors
+
+    ctypedef struct xsltTransformContext:
+        xsltStylesheet* style
+        xmlXPathContext* xpathCtxt
+        xsltDocument* document
+        void* _private
+        xmlDict* dict
+        int profile
+        xmlNode* node
+        xmlDoc* output
+        xmlNode* insert
+        xmlNode* inst
+        xsltTransformState state
+
+    ctypedef struct xsltStackElem
+
+    ctypedef struct xsltTemplate
+
+    cdef xsltStylesheet* xsltParseStylesheetDoc(xmlDoc* doc)
+    cdef void xsltFreeStylesheet(xsltStylesheet* sheet)
+
+cdef extern from "libxslt/imports.h" nogil:
+    # actually defined in "etree_defs.h"
+    cdef void LXML_GET_XSLT_ENCODING(const_xmlChar* result_var, xsltStylesheet* style)
+
+cdef extern from "libxslt/extensions.h" nogil:
+    ctypedef void (*xsltTransformFunction)(xsltTransformContext* ctxt,
+                                           xmlNode* context_node,
+                                           xmlNode* inst,
+                                           void* precomp_unused) noexcept
+
+    cdef int xsltRegisterExtFunction(xsltTransformContext* ctxt,
+                                     const_xmlChar* name,
+                                     const_xmlChar* URI,
+                                     xmlXPathFunction function)
+    cdef int xsltRegisterExtModuleFunction(const_xmlChar* name, const_xmlChar* URI,
+                                           xmlXPathFunction function)
+    cdef int xsltUnregisterExtModuleFunction(const_xmlChar* name, const_xmlChar* URI)
+    cdef xmlXPathFunction xsltExtModuleFunctionLookup(
+        const_xmlChar* name, const_xmlChar* URI)
+    cdef int xsltRegisterExtPrefix(xsltStylesheet* style, 
+                                   const_xmlChar* prefix, const_xmlChar* URI)
+    cdef int xsltRegisterExtElement(xsltTransformContext* ctxt,
+                                    const_xmlChar* name, const_xmlChar* URI,
+                                    xsltTransformFunction function)
+
+cdef extern from "libxslt/documents.h" nogil:
+    ctypedef enum xsltLoadType:
+        XSLT_LOAD_START
+        XSLT_LOAD_STYLESHEET
+        XSLT_LOAD_DOCUMENT
+
+    ctypedef xmlDoc* (*xsltDocLoaderFunc)(const_xmlChar* URI, xmlDict* dict,
+                                          int options,
+                                          void* ctxt,
+                                          xsltLoadType type) noexcept
+    cdef xsltDocLoaderFunc xsltDocDefaultLoader
+    cdef void xsltSetLoaderFunc(xsltDocLoaderFunc f)
+
+cdef extern from "libxslt/transform.h" nogil:
+    cdef xmlDoc* xsltApplyStylesheet(xsltStylesheet* style, xmlDoc* doc,
+                                     const_char** params)
+    cdef xmlDoc* xsltApplyStylesheetUser(xsltStylesheet* style, xmlDoc* doc,
+                                         const_char** params, const_char* output,
+                                         void* profile,
+                                         xsltTransformContext* context)
+    cdef void xsltProcessOneNode(xsltTransformContext* ctxt,
+                                 xmlNode* contextNode,
+                                 xsltStackElem* params)
+    cdef xsltTransformContext* xsltNewTransformContext(xsltStylesheet* style,
+                                                       xmlDoc* doc)
+    cdef void xsltFreeTransformContext(xsltTransformContext* context)
+    cdef void xsltApplyOneTemplate(xsltTransformContext* ctxt,
+                                   xmlNode* contextNode, xmlNode* list,
+                                   xsltTemplate* templ,
+                                   xsltStackElem* params)
+
+
+cdef extern from "libxslt/xsltutils.h" nogil:
+    cdef int xsltSaveResultToString(xmlChar** doc_txt_ptr,
+                                    int* doc_txt_len,
+                                    xmlDoc* result,
+                                    xsltStylesheet* style)
+    cdef int xsltSaveResultToFilename(const_char *URL,
+                                      xmlDoc* result,
+                                      xsltStylesheet* style,
+                                      int compression)
+    cdef int xsltSaveResultTo(xmlOutputBuffer* buf,
+                              xmlDoc* result,
+                              xsltStylesheet* style)
+    cdef xmlGenericErrorFunc xsltGenericError
+    cdef void *xsltGenericErrorContext
+    cdef void xsltSetGenericErrorFunc(
+        void* ctxt, void (*handler)(void* ctxt, char* msg, ...) nogil)
+    cdef void xsltSetTransformErrorFunc(
+        xsltTransformContext*, void* ctxt,
+        void (*handler)(void* ctxt, char* msg, ...) nogil)
+    cdef void xsltTransformError(xsltTransformContext* ctxt, 
+                                 xsltStylesheet* style, 
+                                 xmlNode* node, char* msg, ...)
+    cdef void xsltSetCtxtParseOptions(
+        xsltTransformContext* ctxt, int options)
+
+
+cdef extern from "libxslt/security.h" nogil:
+    ctypedef struct xsltSecurityPrefs
+    ctypedef enum xsltSecurityOption:
+        XSLT_SECPREF_READ_FILE = 1
+        XSLT_SECPREF_WRITE_FILE = 2
+        XSLT_SECPREF_CREATE_DIRECTORY = 3
+        XSLT_SECPREF_READ_NETWORK = 4
+        XSLT_SECPREF_WRITE_NETWORK = 5
+
+    ctypedef int (*xsltSecurityCheck)(xsltSecurityPrefs* sec,
+                                      xsltTransformContext* ctxt,
+                                      char* value) noexcept
+
+    cdef xsltSecurityPrefs* xsltNewSecurityPrefs()
+    cdef void xsltFreeSecurityPrefs(xsltSecurityPrefs* sec)
+    cdef int xsltSecurityForbid(xsltSecurityPrefs* sec,
+                                xsltTransformContext* ctxt,
+                                char* value)
+    cdef int xsltSecurityAllow(xsltSecurityPrefs* sec,
+                                xsltTransformContext* ctxt,
+                                char* value)
+    cdef int xsltSetSecurityPrefs(xsltSecurityPrefs* sec,
+                                  xsltSecurityOption option,
+                                  xsltSecurityCheck func)
+    cdef xsltSecurityCheck xsltGetSecurityPrefs(
+        xsltSecurityPrefs* sec,
+        xsltSecurityOption option)
+    cdef int xsltSetCtxtSecurityPrefs(xsltSecurityPrefs* sec,
+                                      xsltTransformContext* ctxt)
+    cdef xmlDoc* xsltGetProfileInformation(xsltTransformContext* ctxt)
+
+cdef extern from "libxslt/variables.h" nogil:
+    cdef int xsltQuoteUserParams(xsltTransformContext* ctxt,
+                                 const_char** params)
+    cdef int xsltQuoteOneUserParam(xsltTransformContext* ctxt,
+                                   const_xmlChar* name,
+                                   const_xmlChar* value)
+
+cdef extern from "libxslt/extra.h" nogil:
+    const_xmlChar* XSLT_LIBXSLT_NAMESPACE
+    const_xmlChar* XSLT_XALAN_NAMESPACE
+    const_xmlChar* XSLT_SAXON_NAMESPACE
+    const_xmlChar* XSLT_XT_NAMESPACE
+
+    cdef xmlXPathFunction xsltFunctionNodeSet
+    cdef void xsltRegisterAllExtras()
+
+cdef extern from "libexslt/exslt.h" nogil:
+    cdef void exsltRegisterAll()
+
+    # libexslt 1.1.25+
+    const_xmlChar* EXSLT_DATE_NAMESPACE
+    const_xmlChar* EXSLT_SETS_NAMESPACE
+    const_xmlChar* EXSLT_MATH_NAMESPACE
+    const_xmlChar* EXSLT_STRINGS_NAMESPACE
+
+    cdef int exsltDateXpathCtxtRegister(xmlXPathContext* ctxt, const_xmlChar* prefix)
+    cdef int exsltSetsXpathCtxtRegister(xmlXPathContext* ctxt, const_xmlChar* prefix)
+    cdef int exsltMathXpathCtxtRegister(xmlXPathContext* ctxt, const_xmlChar* prefix)
+    cdef int exsltStrXpathCtxtRegister(xmlXPathContext* ctxt, const_xmlChar* prefix)

.venv/lib/python3.12/site-packages/lxml/isoschematron/__init__.py

@@ -0,0 +1,348 @@
+"""The ``lxml.isoschematron`` package implements ISO Schematron support on top
+of the pure-xslt 'skeleton' implementation.
+"""
+
+import sys
+import os.path
+from lxml import etree as _etree # due to validator __init__ signature
+
+
+# some compat stuff, borrowed from lxml.html
+try:
+    unicode
+except NameError:
+    # Python 3
+    unicode = str
+try:
+    basestring
+except NameError:
+    # Python 3
+    basestring = str
+
+
+__all__ = ['extract_xsd', 'extract_rng', 'iso_dsdl_include',
+           'iso_abstract_expand', 'iso_svrl_for_xslt1',
+           'svrl_validation_errors', 'schematron_schema_valid',
+           'stylesheet_params', 'Schematron']
+
+
+# some namespaces
+#FIXME: Maybe lxml should provide a dedicated place for common namespace
+#FIXME: definitions?
+XML_SCHEMA_NS = "http://www.w3.org/2001/XMLSchema"
+RELAXNG_NS = "http://relaxng.org/ns/structure/1.0"
+SCHEMATRON_NS = "http://purl.oclc.org/dsdl/schematron"
+SVRL_NS = "http://purl.oclc.org/dsdl/svrl"
+
+
+# some helpers
+_schematron_root = '{%s}schema' % SCHEMATRON_NS
+_xml_schema_root = '{%s}schema' % XML_SCHEMA_NS
+_resources_dir = os.path.join(os.path.dirname(__file__), 'resources')
+
+
+# the iso-schematron skeleton implementation steps aka xsl transformations
+extract_xsd = _etree.XSLT(_etree.parse(
+    os.path.join(_resources_dir, 'xsl', 'XSD2Schtrn.xsl')))
+extract_rng = _etree.XSLT(_etree.parse(
+    os.path.join(_resources_dir, 'xsl', 'RNG2Schtrn.xsl')))
+iso_dsdl_include = _etree.XSLT(_etree.parse(
+    os.path.join(_resources_dir, 'xsl', 'iso-schematron-xslt1',
+                 'iso_dsdl_include.xsl')))
+iso_abstract_expand = _etree.XSLT(_etree.parse(
+    os.path.join(_resources_dir, 'xsl', 'iso-schematron-xslt1',
+                 'iso_abstract_expand.xsl')))
+iso_svrl_for_xslt1 = _etree.XSLT(_etree.parse(
+    os.path.join(_resources_dir,
+                 'xsl', 'iso-schematron-xslt1', 'iso_svrl_for_xslt1.xsl')))
+
+
+# svrl result accessors
+svrl_validation_errors = _etree.XPath(
+    '//svrl:failed-assert', namespaces={'svrl': SVRL_NS})
+
+# RelaxNG validator for schematron schemas
+schematron_schema_valid_supported = False
+try:
+    schematron_schema_valid = _etree.RelaxNG(
+        file=os.path.join(_resources_dir, 'rng', 'iso-schematron.rng'))
+    schematron_schema_valid_supported = True
+except _etree.RelaxNGParseError:
+    # Some distributions delete the file due to licensing issues.
+    def schematron_schema_valid(arg):
+        raise NotImplementedError("Validating the ISO schematron requires iso-schematron.rng")
+
+
+def stylesheet_params(**kwargs):
+    """Convert keyword args to a dictionary of stylesheet parameters.
+    XSL stylesheet parameters must be XPath expressions, i.e.:
+
+    * string expressions, like "'5'"
+    * simple (number) expressions, like "5"
+    * valid XPath expressions, like "/a/b/text()"
+
+    This function converts native Python keyword arguments to stylesheet
+    parameters following these rules:
+    If an arg is a string wrap it with XSLT.strparam().
+    If an arg is an XPath object use its path string.
+    If arg is None raise TypeError.
+    Else convert arg to string.
+    """
+    result = {}
+    for key, val in kwargs.items():
+        if isinstance(val, basestring):
+            val = _etree.XSLT.strparam(val)
+        elif val is None:
+            raise TypeError('None not allowed as a stylesheet parameter')
+        elif not isinstance(val, _etree.XPath):
+            val = unicode(val)
+        result[key] = val
+    return result
+
+
+# helper function for use in Schematron __init__
+def _stylesheet_param_dict(paramsDict, kwargsDict):
+    """Return a copy of paramsDict, updated with kwargsDict entries, wrapped as
+    stylesheet arguments.
+    kwargsDict entries with a value of None are ignored.
+    """
+    # beware of changing mutable default arg
+    paramsDict = dict(paramsDict)
+    for k, v in kwargsDict.items():
+        if v is not None: # None values do not override
+            paramsDict[k] = v
+    paramsDict = stylesheet_params(**paramsDict)
+    return paramsDict
+
+
+class Schematron(_etree._Validator):
+    """An ISO Schematron validator.
+
+    Pass a root Element or an ElementTree to turn it into a validator.
+    Alternatively, pass a filename as keyword argument 'file' to parse from
+    the file system.
+
+    Schematron is a less well known, but very powerful schema language.
+    The main idea is to use the capabilities of XPath to put restrictions on
+    the structure and the content of XML documents.
+
+    The standard behaviour is to fail on ``failed-assert`` findings only
+    (``ASSERTS_ONLY``).  To change this, you can either pass a report filter
+    function to the ``error_finder`` parameter (e.g. ``ASSERTS_AND_REPORTS``
+    or a custom ``XPath`` object), or subclass isoschematron.Schematron for
+    complete control of the validation process.
+
+    Built on the Schematron language 'reference' skeleton pure-xslt
+    implementation, the validator is created as an XSLT 1.0 stylesheet using
+    these steps:
+
+     0) (Extract from XML Schema or RelaxNG schema)
+     1) Process inclusions
+     2) Process abstract patterns
+     3) Compile the schematron schema to XSLT
+
+    The ``include`` and ``expand`` keyword arguments can be used to switch off
+    steps 1) and 2).
+    To set parameters for steps 1), 2) and 3) hand parameter dictionaries to the
+    keyword arguments ``include_params``, ``expand_params`` or
+    ``compile_params``.
+    For convenience, the compile-step parameter ``phase`` is also exposed as a
+    keyword argument ``phase``. This takes precedence if the parameter is also
+    given in the parameter dictionary.
+
+    If ``store_schematron`` is set to True, the (included-and-expanded)
+    schematron document tree is stored and available through the ``schematron``
+    property.
+    If ``store_xslt`` is set to True, the validation XSLT document tree will be
+    stored and can be retrieved through the ``validator_xslt`` property.
+    With ``store_report`` set to True (default: False), the resulting validation
+    report document gets stored and can be accessed as the ``validation_report``
+    property.
+
+    If ``validate_schema`` is set to False, the validation of the schema file
+    itself is disabled.  Validation happens by default after building the full
+    schema, unless the schema validation file cannot be found at import time,
+    in which case the validation gets disabled.  Some lxml distributions exclude
+    this file due to licensing issues.  ISO-Schematron validation can then still
+    be used normally, but the schemas themselves cannot be validated.
+
+    Here is a usage example::
+
+      >>> from lxml import etree
+      >>> from lxml.isoschematron import Schematron
+
+      >>> schematron = Schematron(etree.XML('''
+      ... <schema xmlns="http://purl.oclc.org/dsdl/schematron" >
+      ...   <pattern id="id_only_attribute">
+      ...     <title>id is the only permitted attribute name</title>
+      ...     <rule context="*">
+      ...       <report test="@*[not(name()='id')]">Attribute
+      ...         <name path="@*[not(name()='id')]"/> is forbidden<name/>
+      ...       </report>
+      ...     </rule>
+      ...   </pattern>
+      ... </schema>'''),
+      ... error_finder=Schematron.ASSERTS_AND_REPORTS)
+
+      >>> xml = etree.XML('''
+      ... <AAA name="aaa">
+      ...   <BBB id="bbb"/>
+      ...   <CCC color="ccc"/>
+      ... </AAA>
+      ... ''')
+
+      >>> schematron.validate(xml)
+      False
+
+      >>> xml = etree.XML('''
+      ... <AAA id="aaa">
+      ...   <BBB id="bbb"/>
+      ...   <CCC/>
+      ... </AAA>
+      ... ''')
+
+      >>> schematron.validate(xml)
+      True
+    """
+
+    # libxml2 error categorization for validation errors
+    _domain = _etree.ErrorDomains.SCHEMATRONV
+    _level = _etree.ErrorLevels.ERROR
+    _error_type = _etree.ErrorTypes.SCHEMATRONV_ASSERT
+
+    # convenience definitions for common behaviours
+    ASSERTS_ONLY = svrl_validation_errors  # Default
+    ASSERTS_AND_REPORTS = _etree.XPath(
+        '//svrl:failed-assert | //svrl:successful-report',
+        namespaces={'svrl': SVRL_NS})
+
+    def _extract(self, element):
+        """Extract embedded schematron schema from non-schematron host schema.
+        This method will only be called by __init__ if the given schema document
+        is not a schematron schema by itself.
+        Must return a schematron schema document tree or None.
+        """
+        schematron = None
+        if element.tag == _xml_schema_root:
+            schematron = self._extract_xsd(element)
+        elif element.nsmap.get(element.prefix) == RELAXNG_NS:
+            # RelaxNG does not have a single unique root element
+            schematron = self._extract_rng(element)
+        return schematron
+
+    # customization points
+    # etree.XSLT objects that provide the extract, include, expand, compile
+    # steps
+    _extract_xsd = extract_xsd
+    _extract_rng = extract_rng
+    _include = iso_dsdl_include
+    _expand = iso_abstract_expand
+    _compile = iso_svrl_for_xslt1
+
+    # etree.xpath object that determines input document validity when applied to
+    # the svrl result report; must return a list of result elements (empty if
+    # valid)
+    _validation_errors = ASSERTS_ONLY
+
+    def __init__(self, etree=None, file=None, include=True, expand=True,
+                 include_params={}, expand_params={}, compile_params={},
+                 store_schematron=False, store_xslt=False, store_report=False,
+                 phase=None, error_finder=ASSERTS_ONLY,
+                 validate_schema=schematron_schema_valid_supported):
+        super().__init__()
+
+        self._store_report = store_report
+        self._schematron = None
+        self._validator_xslt = None
+        self._validation_report = None
+        if error_finder is not self.ASSERTS_ONLY:
+            self._validation_errors = error_finder
+
+        # parse schema document, may be a schematron schema or an XML Schema or
+        # a RelaxNG schema with embedded schematron rules
+        root = None
+        try:
+            if etree is not None:
+                if _etree.iselement(etree):
+                    root = etree
+                else:
+                    root = etree.getroot()
+            elif file is not None:
+                root = _etree.parse(file).getroot()
+        except Exception:
+            raise _etree.SchematronParseError(
+                "No tree or file given: %s" % sys.exc_info()[1])
+        if root is None:
+            raise ValueError("Empty tree")
+        if root.tag == _schematron_root:
+            schematron = root
+        else:
+            schematron = self._extract(root)
+        if schematron is None:
+            raise _etree.SchematronParseError(
+                "Document is not a schematron schema or schematron-extractable")
+        # perform the iso-schematron skeleton implementation steps to get a
+        # validating xslt
+        if include:
+            schematron = self._include(schematron, **include_params)
+        if expand:
+            schematron = self._expand(schematron, **expand_params)
+        if validate_schema and not schematron_schema_valid(schematron):
+            raise _etree.SchematronParseError(
+                "invalid schematron schema: %s" %
+                schematron_schema_valid.error_log)
+        if store_schematron:
+            self._schematron = schematron
+        # add new compile keyword args here if exposing them
+        compile_kwargs = {'phase': phase}
+        compile_params = _stylesheet_param_dict(compile_params, compile_kwargs)
+        validator_xslt = self._compile(schematron, **compile_params)
+        if store_xslt:
+            self._validator_xslt = validator_xslt
+        self._validator = _etree.XSLT(validator_xslt)
+
+    def __call__(self, etree):
+        """Validate doc using Schematron.
+
+        Returns true if document is valid, false if not.
+        """
+        self._clear_error_log()
+        result = self._validator(etree)
+        if self._store_report:
+            self._validation_report = result
+        errors = self._validation_errors(result)
+        if errors:
+            if _etree.iselement(etree):
+                fname = etree.getroottree().docinfo.URL or '<file>'
+            else:
+                fname = etree.docinfo.URL or '<file>'
+            for error in errors:
+                # Does svrl report the line number, anywhere? Don't think so.
+                self._append_log_message(
+                    domain=self._domain, type=self._error_type,
+                    level=self._level, line=0,
+                    message=_etree.tostring(error, encoding='unicode'),
+                    filename=fname)
+            return False
+        return True
+
+    @property
+    def schematron(self):
+        """ISO-schematron schema document (None if object has been initialized
+        with store_schematron=False).
+        """
+        return self._schematron
+
+    @property
+    def validator_xslt(self):
+        """ISO-schematron skeleton implementation XSLT validator document (None
+        if object has been initialized with store_xslt=False).
+        """
+        return self._validator_xslt
+
+    @property
+    def validation_report(self):
+        """ISO-schematron validation result report (None if result-storing has
+        been turned off).
+        """
+        return self._validation_report

.venv/lib/python3.12/site-packages/lxml/isoschematron/resources/rng/iso-schematron.rng

@@ -0,0 +1,709 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!-- Copyright © ISO/IEC 2015 -->
+<!--
+  The following permission notice and disclaimer shall be included in all
+  copies of this XML schema ("the Schema"), and derivations of the Schema:
+  
+  Permission is hereby granted, free of charge in perpetuity, to any
+  person obtaining a copy of the Schema, to use, copy, modify, merge and
+  distribute free of charge, copies of the Schema for the purposes of
+  developing, implementing, installing and using software based on the
+  Schema, and to permit persons to whom the Schema is furnished to do so,
+  subject to the following conditions:
+  
+  THE SCHEMA IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+  THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+  OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+  ARISING FROM, OUT OF OR IN CONNECTION WITH THE SCHEMA OR THE USE OR
+  OTHER DEALINGS IN THE SCHEMA.
+  
+  In addition, any modified copy of the Schema shall include the following
+  notice:
+  
+  "THIS SCHEMA HAS BEEN MODIFIED FROM THE SCHEMA DEFINED IN ISO/IEC 19757-3,
+  AND SHOULD NOT BE INTERPRETED AS COMPLYING WITH THAT STANDARD".
+-->
+<grammar ns="http://purl.oclc.org/dsdl/schematron" xmlns="http://relaxng.org/ns/structure/1.0" datatypeLibrary="http://www.w3.org/2001/XMLSchema-datatypes">
+  <start>
+    <ref name="schema"/>
+  </start>
+  <!-- Element declarations -->
+  <define name="schema">
+    <element name="schema">
+      <optional>
+        <attribute name="id">
+          <data type="ID"/>
+        </attribute>
+      </optional>
+      <ref name="rich"/>
+      <optional>
+        <attribute name="schemaVersion">
+          <ref name="non-empty-string"/>
+        </attribute>
+      </optional>
+      <optional>
+        <attribute name="defaultPhase">
+          <data type="IDREF"/>
+        </attribute>
+      </optional>
+      <optional>
+        <attribute name="queryBinding">
+          <ref name="non-empty-string"/>
+        </attribute>
+      </optional>
+      <interleave>
+        <ref name="foreign"/>
+        <zeroOrMore>
+          <ref name="inclusion"/>
+        </zeroOrMore>
+        <group>
+          <optional>
+            <ref name="title"/>
+          </optional>
+          <zeroOrMore>
+            <ref name="ns"/>
+          </zeroOrMore>
+          <zeroOrMore>
+            <ref name="p"/>
+          </zeroOrMore>
+          <zeroOrMore>
+            <ref name="let"/>
+          </zeroOrMore>
+          <zeroOrMore>
+            <ref name="phase"/>
+          </zeroOrMore>
+          <oneOrMore>
+            <ref name="pattern"/>
+          </oneOrMore>
+          <zeroOrMore>
+            <ref name="p"/>
+          </zeroOrMore>
+          <optional>
+            <ref name="diagnostics"/>
+          </optional>
+          <optional>
+            <!-- edited (lxml): required in standard, optional here (since it can be empty anyway) -->
+            <ref name="properties"/>
+          </optional>
+        </group>
+      </interleave>
+    </element>
+  </define>
+  <define name="active">
+    <element name="active">
+      <attribute name="pattern">
+        <data type="IDREF"/>
+      </attribute>
+      <interleave>
+        <ref name="foreign"/>
+        <zeroOrMore>
+          <choice>
+            <text/>
+            <ref name="dir"/>
+            <ref name="emph"/>
+            <ref name="span"/>
+          </choice>
+        </zeroOrMore>
+      </interleave>
+    </element>
+  </define>
+  <define name="assert">
+    <element name="assert">
+      <attribute name="test">
+        <ref name="exprValue"/>
+      </attribute>
+      <optional>
+        <attribute name="flag">
+          <ref name="flagValue"/>
+        </attribute>
+      </optional>
+      <optional>
+        <attribute name="id">
+          <data type="ID"/>
+        </attribute>
+      </optional>
+      <optional>
+        <attribute name="diagnostics">
+          <data type="IDREFS"/>
+        </attribute>
+      </optional>
+      <optional>
+        <attribute name="properties">
+          <data type="IDREFS"/>
+        </attribute>
+      </optional>
+      <ref name="rich"/>
+      <ref name="linkable"/>
+      <interleave>
+        <ref name="foreign"/>
+        <zeroOrMore>
+          <choice>
+            <text/>
+            <ref name="name"/>
+            <ref name="value-of"/>
+            <ref name="emph"/>
+            <ref name="dir"/>
+            <ref name="span"/>
+          </choice>
+        </zeroOrMore>
+      </interleave>
+    </element>
+  </define>
+  <define name="diagnostic">
+    <element name="diagnostic">
+      <attribute name="id">
+        <data type="ID"/>
+      </attribute>
+      <ref name="rich"/>
+      <interleave>
+        <ref name="foreign"/>
+        <zeroOrMore>
+          <choice>
+            <text/>
+            <ref name="value-of"/>
+            <ref name="emph"/>
+            <ref name="dir"/>
+            <ref name="span"/>
+          </choice>
+        </zeroOrMore>
+      </interleave>
+    </element>
+  </define>
+  <define name="diagnostics">
+    <element name="diagnostics">
+      <interleave>
+        <ref name="foreign"/>
+        <zeroOrMore>
+          <ref name="inclusion"/>
+        </zeroOrMore>
+        <zeroOrMore>
+          <ref name="diagnostic"/>
+        </zeroOrMore>
+      </interleave>
+    </element>
+  </define>
+  <define name="dir">
+    <element name="dir">
+      <optional>
+        <attribute name="value">
+          <choice>
+            <value>ltr</value>
+            <value>rtl</value>
+          </choice>
+        </attribute>
+      </optional>
+      <interleave>
+        <ref name="foreign"/>
+        <text/>
+      </interleave>
+    </element>
+  </define>
+  <define name="emph">
+    <element name="emph">
+      <text/>
+    </element>
+  </define>
+  <define name="extends">
+    <element name="extends">
+      <choice>
+        <attribute name="rule">
+          <data type="IDREF"/>
+        </attribute>
+        <attribute name="href">
+          <ref name="uriValue"/>
+        </attribute>
+      </choice>
+      <ref name="foreign-empty"/>
+    </element>
+  </define>
+  <define name="let">
+    <element name="let">
+      <attribute name="name">
+        <ref name="nameValue"/>
+      </attribute>
+      <choice>
+        <attribute name="value">
+          <data type="string" datatypeLibrary=""/>
+        </attribute>
+        <oneOrMore>
+          <ref name="foreign-element"/>
+        </oneOrMore>
+      </choice>
+    </element>
+  </define>
+  <define name="name">
+    <element name="name">
+      <optional>
+        <attribute name="path">
+          <ref name="pathValue"/>
+        </attribute>
+      </optional>
+      <ref name="foreign-empty"/>
+    </element>
+  </define>
+  <define name="ns">
+    <element name="ns">
+      <attribute name="uri">
+        <ref name="uriValue"/>
+      </attribute>
+      <attribute name="prefix">
+        <ref name="nameValue"/>
+      </attribute>
+      <ref name="foreign-empty"/>
+    </element>
+  </define>
+  <define name="p">
+    <element name="p">
+      <optional>
+        <attribute name="id">
+          <data type="ID"/>
+        </attribute>
+      </optional>
+      <optional>
+        <attribute name="class">
+          <ref name="classValue"/>
+        </attribute>
+      </optional>
+      <optional>
+        <attribute name="icon">
+          <ref name="uriValue"/>
+        </attribute>
+      </optional>
+      <interleave>
+        <ref name="foreign"/>
+        <zeroOrMore>
+          <choice>
+            <text/>
+            <ref name="dir"/>
+            <ref name="emph"/>
+            <ref name="span"/>
+          </choice>
+        </zeroOrMore>
+      </interleave>
+    </element>
+  </define>
+  <define name="param">
+    <element name="param">
+      <attribute name="name">
+        <ref name="nameValue"/>
+      </attribute>
+      <attribute name="value">
+        <ref name="non-empty-string"/>
+      </attribute>
+    </element>
+  </define>
+  <define name="pattern">
+    <element name="pattern">
+      <optional>
+        <attribute name="documents">
+          <ref name="pathValue"/>
+        </attribute>
+      </optional>
+      <ref name="rich"/>
+      <interleave>
+        <ref name="foreign"/>
+        <zeroOrMore>
+          <ref name="inclusion"/>
+        </zeroOrMore>
+        <choice>
+          <group>
+            <attribute name="abstract">
+              <value>true</value>
+            </attribute>
+            <attribute name="id">
+              <data type="ID"/>
+            </attribute>
+            <optional>
+              <ref name="title"/>
+            </optional>
+            <group>
+              <zeroOrMore>
+                <ref name="p"/>
+              </zeroOrMore>
+              <zeroOrMore>
+                <ref name="let"/>
+              </zeroOrMore>
+              <zeroOrMore>
+                <ref name="rule"/>
+              </zeroOrMore>
+            </group>
+          </group>
+          <group>
+            <optional>
+              <attribute name="abstract">
+                <value>false</value>
+              </attribute>
+            </optional>
+            <optional>
+              <attribute name="id">
+                <data type="ID"/>
+              </attribute>
+            </optional>
+            <optional>
+              <ref name="title"/>
+            </optional>
+            <group>
+              <zeroOrMore>
+                <ref name="p"/>
+              </zeroOrMore>
+              <zeroOrMore>
+                <ref name="let"/>
+              </zeroOrMore>
+              <zeroOrMore>
+                <ref name="rule"/>
+              </zeroOrMore>
+            </group>
+          </group>
+          <group>
+            <optional>
+              <attribute name="abstract">
+                <value>false</value>
+              </attribute>
+            </optional>
+            <attribute name="is-a">
+              <data type="IDREF"/>
+            </attribute>
+            <optional>
+              <attribute name="id">
+                <data type="ID"/>
+              </attribute>
+            </optional>
+            <optional>
+              <ref name="title"/>
+            </optional>
+            <group>
+              <zeroOrMore>
+                <ref name="p"/>
+              </zeroOrMore>
+              <zeroOrMore>
+                <ref name="param"/>
+              </zeroOrMore>
+            </group>
+          </group>
+        </choice>
+      </interleave>
+    </element>
+  </define>
+  <define name="phase">
+    <element name="phase">
+      <attribute name="id">
+        <data type="ID"/>
+      </attribute>
+      <ref name="rich"/>
+      <interleave>
+        <ref name="foreign"/>
+        <zeroOrMore>
+          <ref name="inclusion"/>
+        </zeroOrMore>
+        <group>
+          <zeroOrMore>
+            <ref name="p"/>
+          </zeroOrMore>
+          <zeroOrMore>
+            <ref name="let"/>
+          </zeroOrMore>
+          <zeroOrMore>
+            <ref name="active"/>
+          </zeroOrMore>
+        </group>
+      </interleave>
+    </element>
+  </define>
+  <define name="properties">
+    <element name="properties">
+      <zeroOrMore>
+        <ref name="property"/>
+      </zeroOrMore>
+    </element>
+  </define>
+  <define name="property">
+    <element name="property">
+      <attribute name="id">
+        <data type="ID"/>
+      </attribute>
+      <optional>
+        <attribute name="role">
+          <ref name="roleValue"/>
+        </attribute>
+      </optional>
+      <optional>
+        <attribute name="scheme"/>
+      </optional>
+      <interleave>
+        <ref name="foreign"/>
+        <zeroOrMore>
+          <choice>
+            <text/>
+            <ref name="name"/>
+            <ref name="value-of"/>
+            <ref name="emph"/>
+            <ref name="dir"/>
+            <ref name="span"/>
+          </choice>
+        </zeroOrMore>
+      </interleave>
+    </element>
+  </define>
+  <define name="report">
+    <element name="report">
+      <attribute name="test">
+        <ref name="exprValue"/>
+      </attribute>
+      <optional>
+        <attribute name="flag">
+          <ref name="flagValue"/>
+        </attribute>
+      </optional>
+      <optional>
+        <attribute name="id">
+          <data type="ID"/>
+        </attribute>
+      </optional>
+      <optional>
+        <attribute name="diagnostics">
+          <data type="IDREFS"/>
+        </attribute>
+      </optional>
+      <optional>
+        <attribute name="properties">
+          <data type="IDREFS"/>
+        </attribute>
+      </optional>
+      <ref name="rich"/>
+      <ref name="linkable"/>
+      <interleave>
+        <ref name="foreign"/>
+        <zeroOrMore>
+          <choice>
+            <text/>
+            <ref name="name"/>
+            <ref name="value-of"/>
+            <ref name="emph"/>
+            <ref name="dir"/>
+            <ref name="span"/>
+          </choice>
+        </zeroOrMore>
+      </interleave>
+    </element>
+  </define>
+  <define name="rule">
+    <element name="rule">
+      <optional>
+        <attribute name="flag">
+          <ref name="flagValue"/>
+        </attribute>
+      </optional>
+      <ref name="rich"/>
+      <ref name="linkable"/>
+      <interleave>
+        <ref name="foreign"/>
+        <zeroOrMore>
+          <ref name="inclusion"/>
+        </zeroOrMore>
+        <choice>
+          <group>
+            <attribute name="abstract">
+              <value>true</value>
+            </attribute>
+            <attribute name="id">
+              <data type="ID"/>
+            </attribute>
+            <zeroOrMore>
+              <ref name="let"/>
+            </zeroOrMore>
+            <oneOrMore>
+              <choice>
+                <ref name="assert"/>
+                <ref name="report"/>
+                <ref name="extends"/>
+                <ref name="p"/>
+              </choice>
+            </oneOrMore>
+          </group>
+          <group>
+            <attribute name="context">
+              <ref name="pathValue"/>
+            </attribute>
+            <optional>
+              <attribute name="id">
+                <data type="ID"/>
+              </attribute>
+            </optional>
+            <optional>
+              <attribute name="abstract">
+                <value>false</value>
+              </attribute>
+            </optional>
+            <zeroOrMore>
+              <ref name="let"/>
+            </zeroOrMore>
+            <oneOrMore>
+              <choice>
+                <ref name="assert"/>
+                <ref name="report"/>
+                <ref name="extends"/>
+                <ref name="p"/>
+              </choice>
+            </oneOrMore>
+          </group>
+        </choice>
+      </interleave>
+    </element>
+  </define>
+  <define name="span">
+    <element name="span">
+      <attribute name="class">
+        <ref name="classValue"/>
+      </attribute>
+      <interleave>
+        <ref name="foreign"/>
+        <text/>
+      </interleave>
+    </element>
+  </define>
+  <define name="title">
+    <element name="title">
+      <zeroOrMore>
+        <choice>
+          <text/>
+          <ref name="dir"/>
+        </choice>
+      </zeroOrMore>
+    </element>
+  </define>
+  <define name="value-of">
+    <element name="value-of">
+      <attribute name="select">
+        <ref name="pathValue"/>
+      </attribute>
+      <ref name="foreign-empty"/>
+    </element>
+  </define>
+  <!-- common declarations -->
+  <define name="inclusion">
+    <element name="include">
+      <attribute name="href">
+        <ref name="uriValue"/>
+      </attribute>
+      <ref name="foreign-empty"/>
+    </element>
+  </define>
+  <define name="rich">
+    <optional>
+      <attribute name="icon">
+        <ref name="uriValue"/>
+      </attribute>
+    </optional>
+    <optional>
+      <attribute name="see">
+        <ref name="uriValue"/>
+      </attribute>
+    </optional>
+    <optional>
+      <attribute name="fpi">
+        <ref name="fpiValue"/>
+      </attribute>
+    </optional>
+    <optional>
+      <attribute name="xml:lang">
+        <ref name="langValue"/>
+      </attribute>
+    </optional>
+    <optional>
+      <attribute name="xml:space">
+        <choice>
+          <value>preserve</value>
+          <value>default</value>
+        </choice>
+      </attribute>
+    </optional>
+  </define>
+  <define name="linkable">
+    <optional>
+      <attribute name="role">
+        <ref name="roleValue"/>
+      </attribute>
+    </optional>
+    <optional>
+      <attribute name="subject">
+        <ref name="pathValue"/>
+      </attribute>
+    </optional>
+  </define>
+  <define name="foreign">
+    <ref name="foreign-attributes"/>
+    <zeroOrMore>
+      <ref name="foreign-element"/>
+    </zeroOrMore>
+  </define>
+  <define name="foreign-empty">
+    <ref name="foreign-attributes"/>
+  </define>
+  <define name="foreign-attributes">
+    <zeroOrMore>
+      <attribute>
+        <anyName>
+          <except>
+            <nsName ns=""/>
+            <nsName ns="http://www.w3.org/XML/1998/namespace"/>
+          </except>
+        </anyName>
+      </attribute>
+    </zeroOrMore>
+  </define>
+  <define name="foreign-element">
+    <element>
+      <anyName>
+        <except>
+          <nsName/>
+        </except>
+      </anyName>
+      <zeroOrMore>
+        <choice>
+          <attribute>
+            <anyName/>
+          </attribute>
+          <ref name="foreign-element"/>
+          <ref name="schema"/>
+          <text/>
+        </choice>
+      </zeroOrMore>
+    </element>
+  </define>
+  <!-- Data types -->
+  <define name="uriValue">
+    <data type="anyURI"/>
+  </define>
+  <define name="pathValue">
+    <data type="string" datatypeLibrary=""/>
+  </define>
+  <define name="exprValue">
+    <data type="string" datatypeLibrary=""/>
+  </define>
+  <define name="fpiValue">
+    <data type="string" datatypeLibrary=""/>
+  </define>
+  <define name="langValue">
+    <data type="language"/>
+  </define>
+  <define name="roleValue">
+    <data type="string" datatypeLibrary=""/>
+  </define>
+  <define name="flagValue">
+    <data type="string" datatypeLibrary=""/>
+  </define>
+  <define name="nameValue">
+    <data type="string" datatypeLibrary=""/>
+  </define>
+  <!-- In the default query language binding, xsd:NCNAME -->
+  <define name="classValue">
+    <data type="string" datatypeLibrary=""/>
+  </define>
+  <define name="non-empty-string">
+    <data type="token">
+      <param name="minLength">1</param>
+    </data>
+  </define>
+</grammar>

.venv/lib/python3.12/site-packages/lxml/isoschematron/resources/xsl/RNG2Schtrn.xsl

@@ -0,0 +1,75 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+	Stylesheet for extracting Schematron information from a RELAX-NG schema.
+	Based on the stylesheet for extracting Schematron information from W3C XML Schema.
+	Created by Eddie Robertsson 2002/06/01
+        2009/12/10      hj: changed Schematron namespace to ISO URI (Holger Joukl)
+-->
+<xsl:transform version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" 
+xmlns:sch="http://purl.oclc.org/dsdl/schematron" xmlns:rng="http://relaxng.org/ns/structure/1.0">
+	<!-- Set the output to be XML with an XML declaration and use indentation -->
+	<xsl:output method="xml" omit-xml-declaration="no" indent="yes" standalone="yes"/>
+	<!-- -->
+	<!-- match schema and call recursive template to extract included schemas -->
+	<!-- -->
+	<xsl:template match="/rng:grammar | /rng:element">
+		<!-- call the schema definition template ... -->
+		<xsl:call-template name="gatherSchema">
+			<!-- ... with current node as the $schemas parameter ... -->
+			<xsl:with-param name="schemas" select="."/>
+			<!-- ... and any includes in the $include parameter -->
+			<xsl:with-param name="includes" select="document(/rng:grammar/rng:include/@href
+| //rng:externalRef/@href)"/>
+		</xsl:call-template>
+	</xsl:template>
+	<!-- -->
+	<!-- gather all included schemas into a single parameter variable -->
+	<!-- -->
+	<xsl:template name="gatherSchema">
+		<xsl:param name="schemas"/>
+		<xsl:param name="includes"/>
+		<xsl:choose>
+			<xsl:when test="count($schemas) &lt; count($schemas | $includes)">
+				<!-- when $includes includes something new, recurse ... -->
+				<xsl:call-template name="gatherSchema">
+					<!-- ... with current $includes added to the $schemas parameter ... -->
+					<xsl:with-param name="schemas" select="$schemas | $includes"/>
+					<!-- ... and any *new* includes in the $include parameter -->
+					<xsl:with-param name="includes" select="document($includes/rng:grammar/rng:include/@href
+| $includes//rng:externalRef/@href)"/>
+				</xsl:call-template>
+			</xsl:when>
+			<xsl:otherwise>
+				<!-- we have the complete set of included schemas, so now let's output the embedded schematron -->
+				<xsl:call-template name="output">
+					<xsl:with-param name="schemas" select="$schemas"/>
+				</xsl:call-template>
+			</xsl:otherwise>
+		</xsl:choose>
+	</xsl:template>
+	<!-- -->
+	<!-- output the schematron information -->
+	<!-- -->
+	<xsl:template name="output">
+		<xsl:param name="schemas"/>
+		<!-- -->
+		<sch:schema>
+			<!-- get header-type elements - eg title and especially ns -->
+			<!-- title (just one) -->
+			<xsl:copy-of select="$schemas//sch:title[1]"/>
+			<!-- get remaining schematron schema children -->
+			<!-- get non-blank namespace elements, dropping duplicates -->
+			<xsl:for-each select="$schemas//sch:ns">
+				<xsl:if test="generate-id(.) = generate-id($schemas//sch:ns[@prefix = current()/@prefix][1])">
+					<xsl:copy-of select="."/>
+				</xsl:if>
+			</xsl:for-each>
+			<xsl:copy-of select="$schemas//sch:phase"/>
+			<xsl:copy-of select="$schemas//sch:pattern"/>
+			<sch:diagnostics>
+				<xsl:copy-of select="$schemas//sch:diagnostics/*"/>
+			</sch:diagnostics>
+		</sch:schema>
+	</xsl:template>
+	<!-- -->
+</xsl:transform>

.venv/lib/python3.12/site-packages/lxml/isoschematron/resources/xsl/XSD2Schtrn.xsl

@@ -0,0 +1,77 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+        based on an original transform by Eddie Robertsson
+        2001/04/21      fn: added support for included schemas
+        2001/06/27      er: changed XMl Schema prefix from xsd: to xs: and changed to the Rec namespace
+        2009/12/10      hj: changed Schematron namespace to ISO URI (Holger Joukl)
+-->
+<xsl:transform version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" 
+xmlns:sch="http://purl.oclc.org/dsdl/schematron" xmlns:xs="http://www.w3.org/2001/XMLSchema">
+        <!-- Set the output to be XML with an XML declaration and use indentation -->
+        <xsl:output method="xml" omit-xml-declaration="no" indent="yes" standalone="yes"/>
+        <!-- -->
+        <!-- match schema and call recursive template to extract included schemas -->
+        <!-- -->
+        <xsl:template match="xs:schema">
+                <!-- call the schema definition template ... -->
+                <xsl:call-template name="gatherSchema">
+                        <!-- ... with current current root as the $schemas parameter ... -->
+                        <xsl:with-param name="schemas" select="/"/>
+                        <!-- ... and any includes in the $include parameter -->
+                        <xsl:with-param name="includes" 
+						select="document(/xs:schema/xs:*[self::xs:include or self::xs:import or self::xs:redefine]/@schemaLocation)"/>
+                </xsl:call-template>
+        </xsl:template>
+        <!-- -->
+        <!-- gather all included schemas into a single parameter variable -->
+        <!-- -->
+        <xsl:template name="gatherSchema">
+                <xsl:param name="schemas"/>
+                <xsl:param name="includes"/>
+                <xsl:choose>
+                        <xsl:when test="count($schemas) &lt; count($schemas | $includes)">
+                                <!-- when $includes includes something new, recurse ... -->
+                                <xsl:call-template name="gatherSchema">
+                                        <!-- ... with current $includes added to the $schemas parameter ... -->
+                                        <xsl:with-param name="schemas" select="$schemas | $includes"/>
+                                        <!-- ... and any *new* includes in the $include parameter -->
+                                        <xsl:with-param name="includes" 
+										select="document($includes/xs:schema/xs:*[self::xs:include or self::xs:import or self::xs:redefine]/@schemaLocation)"/>
+                                </xsl:call-template>
+                        </xsl:when>
+                        <xsl:otherwise>
+                                <!-- we have the complete set of included schemas, 
+								so now let's output the embedded schematron -->
+                                <xsl:call-template name="output">
+                                        <xsl:with-param name="schemas" select="$schemas"/>
+                                </xsl:call-template>
+                        </xsl:otherwise>
+                </xsl:choose>
+        </xsl:template>
+        <!-- -->
+        <!-- output the schematron information -->
+        <!-- -->
+        <xsl:template name="output">
+                <xsl:param name="schemas"/>
+                <!-- -->
+                <sch:schema>
+                        <!-- get header-type elements - eg title and especially ns -->
+                        <!-- title (just one) -->
+                        <xsl:copy-of select="$schemas//xs:appinfo/sch:title[1]"/>
+                        <!-- get remaining schematron schema children -->
+                        <!-- get non-blank namespace elements, dropping duplicates -->
+                        <xsl:for-each select="$schemas//xs:appinfo/sch:ns">
+                                <xsl:if test="generate-id(.) = 
+								generate-id($schemas//xs:appinfo/sch:ns[@prefix = current()/@prefix][1])">
+                                        <xsl:copy-of select="."/>
+                                </xsl:if>
+                        </xsl:for-each>
+                        <xsl:copy-of select="$schemas//xs:appinfo/sch:phase"/>
+                        <xsl:copy-of select="$schemas//xs:appinfo/sch:pattern"/>
+                        <sch:diagnostics>
+                                <xsl:copy-of select="$schemas//xs:appinfo/sch:diagnostics/*"/>
+                        </sch:diagnostics>
+                </sch:schema>
+        </xsl:template>
+        <!-- -->
+</xsl:transform>

.venv/lib/python3.12/site-packages/lxml/isoschematron/resources/xsl/iso-schematron-xslt1/iso_abstract_expand.xsl

@@ -0,0 +1,313 @@
+<?xml version="1.0" encoding="UTF-8"?><?xar XSLT?>
+
+<!-- 
+     OVERVIEW - iso_abstract_expand.xsl
+     
+	    This is a preprocessor for ISO Schematron, which implements abstract patterns. 
+	    It also 
+	       	* extracts a particular schema using an ID, where there are multiple 
+             schemas, such as when they are embedded in the same NVDL script 
+           * allows parameter substitution inside @context, @test, @select, @path
+	    	   * experimentally, allows parameter recognition and substitution inside
+             text (NOTE: to be removed, for compataibility with other implementations,   
+             please do not use this) 
+		
+		This should be used after iso-dsdl-include.xsl and before the skeleton or
+		meta-stylesheet (e.g. iso-svrl.xsl) . It only requires XSLT 1.
+		 
+		Each kind of inclusion can be turned off (or on) on the command line.
+		 
+-->
+
+<!--
+Open Source Initiative OSI - The MIT License:Licensing
+[OSI Approved License]
+
+This source code was previously available under the zlib/libpng license. 
+Attribution is polite.
+
+The MIT License
+
+Copyright (c) 2004-2010  Rick Jellife and Academia Sinica Computing Centre, Taiwan
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+-->
+
+<!--
+VERSION INFORMATION
+  2013-09-19 RJ
+     * Allow macro expansion in  @path attributes, eg. for   sch:name/@path
+
+  2010-07-10 RJ
+  		* Move to MIT license
+  		
+  2008-09-18 RJ
+  		* move out param test from iso:schema template  to work with XSLT 1. (Noah Fontes)
+  		
+  2008-07-29 RJ 
+  		* Create.  Pull out as distinct XSL in its own namespace from old iso_pre_pro.xsl
+  		* Put everything in private namespace
+  		* Rewrite replace_substring named template so that copyright is clear
+  	
+  2008-07-24 RJ
+       * correct abstract patterns so for correct names: param/@name and
+     param/@value
+    
+  2007-01-12  RJ 
+     * Use ISO namespace
+     * Use pattern/@id not  pattern/@name 
+     * Add Oliver Becker's suggests from old Schematron-love-in list for <copy> 
+     * Add XT -ism?
+  2003 RJ
+     * Original written for old namespace
+     * http://www.topologi.com/resources/iso-pre-pro.xsl
+-->	
+<xslt:stylesheet version="1.0" xmlns:xslt="http://www.w3.org/1999/XSL/Transform" 
+	xmlns:xsl="http://www.w3.org/1999/XSL/Transform" 
+    xmlns:iso="http://purl.oclc.org/dsdl/schematron"  
+    xmlns:nvdl="http://purl.oclc.org/dsdl/nvdl"  
+    
+    xmlns:iae="http://www.schematron.com/namespace/iae" 
+     
+      >
+	
+	<xslt:param name="schema-id"></xslt:param>
+	
+	
+	<!-- Driver for the mode -->
+	<xsl:template match="/">
+  		<xsl:apply-templates select="." mode="iae:go" />
+	</xsl:template> 
+	
+	
+	<!-- ================================================================================== -->
+	<!-- Normal processing rules                                                            -->
+	<!-- ================================================================================== -->
+	<!-- Output only the selected schema --> 
+	<xslt:template match="iso:schema" >
+	    <xsl:if test="string-length($schema-id) =0 or @id= $schema-id ">
+	    	<xslt:copy>
+				<xslt:copy-of select="@*" />
+				<xslt:apply-templates  mode="iae:go" /> 
+			</xslt:copy>
+		</xsl:if>
+	</xslt:template>
+	
+ 
+	<!-- Strip out any foreign elements above the Schematron schema .
+		-->
+	<xslt:template match="*[not(ancestor-or-self::iso:*)]"     mode="iae:go"  >
+	   <xslt:apply-templates  mode="iae:go" />
+	</xslt:template>
+	   
+	
+	<!-- ================================================================================== -->
+	<!-- Handle Schematron abstract pattern preprocessing                                   -->
+	<!-- abstract-to-real calls
+			do-pattern calls 
+				macro-expand calls 
+					multi-macro-expand
+						replace-substring                                                   -->
+	<!-- ================================================================================== -->
+	
+	<!--
+		Abstract patterns allow you to say, for example
+		
+		<pattern name="htmlTable" is-a="table">
+			<param name="row" value="html:tr"/>
+			<param name="cell" value="html:td" />
+			<param name="table" value="html:table" />
+		</pattern>
+		
+		For a good introduction, see Uche Ogbujii's article for IBM DeveloperWorks
+		"Discover the flexibility of Schematron abstract patterns"
+		  http://www-128.ibm.com/developerworks/xml/library/x-stron.html
+		However, note that ISO Schematron uses @name and @value attributes on
+		the iso:param element, and @id not @name on the pattern element.
+		
+	-->
+	
+	<!-- Suppress declarations of abstract patterns -->
+	<xslt:template match="iso:pattern[@abstract='true']"  mode="iae:go"  >
+		<xslt:comment>Suppressed abstract pattern <xslt:value-of select="@id"/> was here</xslt:comment>	
+	</xslt:template> 
+	
+	
+	<!-- Suppress uses of abstract patterns -->
+	<xslt:template match="iso:pattern[@is-a]"  mode="iae:go" >
+			
+		<xslt:comment>Start pattern based on abstract <xslt:value-of select="@is-a"/></xslt:comment>
+		
+		<xslt:call-template name="iae:abstract-to-real" >
+			<xslt:with-param name="caller" select="@id" />
+			<xslt:with-param name="is-a" select="@is-a" />
+		</xslt:call-template>
+			
+	</xslt:template>
+	 
+	 
+	
+	<!-- output everything else unchanged -->
+	<xslt:template match="*" priority="-1"  mode="iae:go" >
+	    <xslt:copy>
+			<xslt:copy-of select="@*" />
+			<xslt:apply-templates mode="iae:go"/> 
+		</xslt:copy>
+	</xslt:template>
+	
+	<!-- Templates for macro expansion of abstract patterns -->
+	<!-- Sets up the initial conditions for the recursive call -->
+	<xslt:template name="iae:macro-expand">
+		<xslt:param name="caller"/>
+		<xslt:param name="text" />
+		<xslt:call-template name="iae:multi-macro-expand">
+			<xslt:with-param name="caller" select="$caller"/>
+			<xslt:with-param name="text" select="$text"/>
+			<xslt:with-param name="paramNumber" select="1"/>
+		</xslt:call-template>
+		
+	</xslt:template>
+	
+	<!-- Template to replace the current parameter and then
+	   recurse to replace subsequent parameters. -->
+	    
+	<xslt:template name="iae:multi-macro-expand">
+		<xslt:param name="caller"/>
+		<xslt:param name="text" />
+		<xslt:param name="paramNumber" />
+
+		
+		<xslt:choose>
+			<xslt:when test="//iso:pattern[@id=$caller]/iso:param[ $paramNumber]">
+
+				<xslt:call-template name="iae:multi-macro-expand">
+					<xslt:with-param name="caller" select="$caller"/>	
+					<xslt:with-param name="paramNumber" select="$paramNumber + 1"/>		
+					<xslt:with-param name="text" >
+						<xslt:call-template name="iae:replace-substring">
+							<xslt:with-param name="original" select="$text"/>
+							<xslt:with-param name="substring"
+							select="concat('$', //iso:pattern[@id=$caller]/iso:param[ $paramNumber ]/@name)"/>
+							<xslt:with-param name="replacement"
+								select="//iso:pattern[@id=$caller]/iso:param[ $paramNumber ]/@value"/>			
+						</xslt:call-template>
+					</xslt:with-param>						
+				</xslt:call-template>
+			</xslt:when>
+			<xslt:otherwise><xslt:value-of select="$text" /></xslt:otherwise>		
+		
+		</xslt:choose>
+	</xslt:template>
+	
+	
+	<!-- generate the real pattern from an abstract pattern + parameters-->
+	<xslt:template name="iae:abstract-to-real" >
+		<xslt:param name="caller"/>
+		<xslt:param name="is-a" />
+		<xslt:for-each select="//iso:pattern[@id= $is-a]">
+		<xslt:copy>
+		
+		    <xslt:choose>
+		      <xslt:when test=" string-length( $caller ) = 0">
+		      <xslt:attribute name="id"><xslt:value-of select="concat( generate-id(.) , $is-a)" /></xslt:attribute>
+		      </xslt:when>
+		      <xslt:otherwise>
+				<xslt:attribute name="id"><xslt:value-of select="$caller" /></xslt:attribute>
+		      </xslt:otherwise>
+		    </xslt:choose> 
+			
+			<xslt:apply-templates select="*|text()" mode="iae:do-pattern"    >
+				<xslt:with-param name="caller"><xslt:value-of select="$caller"/></xslt:with-param>
+			</xslt:apply-templates>	
+			
+		</xslt:copy>
+		</xslt:for-each>
+	</xslt:template>
+		
+	
+	<!-- Generate a non-abstract pattern -->
+	<xslt:template mode="iae:do-pattern" match="*">
+		<xslt:param name="caller"/>
+		<xslt:copy>
+			<xslt:for-each select="@*[name()='test' or name()='context' or name()='select'   or name()='path'  ]">
+				<xslt:attribute name="{name()}">
+				<xslt:call-template name="iae:macro-expand">
+						<xslt:with-param name="text"><xslt:value-of select="."/></xslt:with-param>
+						<xslt:with-param name="caller"><xslt:value-of select="$caller"/></xslt:with-param>
+					</xslt:call-template>
+				</xslt:attribute>
+			</xslt:for-each>	
+			<xslt:copy-of select="@*[name()!='test'][name()!='context'][name()!='select'][name()!='path']" />
+			<xsl:for-each select="node()">
+				<xsl:choose>
+				    <!-- Experiment: replace macros in text as well, to allow parameterized assertions
+				        and so on, without having to have spurious <iso:value-of> calls and multiple
+				        delimiting.
+                NOTE: THIS FUNCTIONALITY WILL BE REMOVED IN THE FUTURE    -->
+					<xsl:when test="self::text()">	
+						<xslt:call-template name="iae:macro-expand">
+							<xslt:with-param name="text"><xslt:value-of select="."/></xslt:with-param>
+							<xslt:with-param name="caller"><xslt:value-of select="$caller"/></xslt:with-param>
+						</xslt:call-template>
+					</xsl:when>
+					<xsl:otherwise>
+						<xslt:apply-templates select="." mode="iae:do-pattern">
+							<xslt:with-param name="caller"><xslt:value-of select="$caller"/></xslt:with-param>
+						</xslt:apply-templates>		
+					</xsl:otherwise>
+				</xsl:choose>
+			</xsl:for-each>			
+		</xslt:copy>
+	</xslt:template>
+	
+	<!-- UTILITIES --> 
+	<!-- Simple version of replace-substring function -->
+	<xslt:template name="iae:replace-substring">
+		<xslt:param name="original" />    
+		<xslt:param name="substring" />   
+		<xslt:param name="replacement" select="''"/>
+		
+  <xsl:choose>
+    <xsl:when test="not($original)" /> 
+    <xsl:when test="not(string($substring))">
+      <xsl:value-of select="$original" />
+    </xsl:when> 
+        <xsl:when test="contains($original, $substring)">
+          <xsl:variable name="before" select="substring-before($original, $substring)" />
+          <xsl:variable name="after" select="substring-after($original, $substring)" />
+          
+          <xsl:value-of select="$before" />
+          <xsl:value-of select="$replacement" />
+          <!-- recursion -->
+          <xsl:call-template name="iae:replace-substring">
+            <xsl:with-param name="original" select="$after" />
+            <xsl:with-param name="substring" select="$substring" />
+            <xsl:with-param name="replacement" select="$replacement" /> 
+            </xsl:call-template>
+        </xsl:when>
+        <xsl:otherwise>
+        	<!-- no substitution -->
+        	<xsl:value-of select="$original" />
+        </xsl:otherwise>
+      </xsl:choose> 
+</xslt:template>
+
+
+
+</xslt:stylesheet>

.venv/lib/python3.12/site-packages/lxml/isoschematron/resources/xsl/iso-schematron-xslt1/iso_dsdl_include.xsl

@@ -0,0 +1,1160 @@
+<?xml version="1.0" encoding="UTF-8"?><?xar XSLT?>
+
+<!-- 
+     OVERVIEW : iso_dsdl_include.xsl
+     
+	    This is an inclusion preprocessor for the non-smart text inclusions
+	    of ISO DSDL. It handles 
+	    	<relax:extRef> for ISO RELAX NG
+	    	<sch:include>  for ISO Schematron and Schematron 1.n
+	    	<sch:extends>  for 2009 draft ISO Schematron
+	    	<xi:xinclude>  simple W3C XIncludes for ISO NVRL and DSRL 
+	    	<crdl:ref>     for draft ISO CRDL
+	    	<dtll:include> for draft ISO DTLL
+	    	<* @xlink:href> for simple W3C XLink 1.1 embedded links
+	    	
+		 
+		This should be the first in any chain of processing. It only requires
+		XSLT 1. Each kind of inclusion can be turned off (or on) on the command line.
+		
+		Ids in fragment identifiers or xpointers will be sought in the following
+		order:
+		    * @xml:id
+		    * id() for typed schemas (e.g. from DTD) [NOTE: XInclude does not support this]
+		    * untyped @id 
+		    
+	The proposed behaviour for the update to ISO Schematron has been implemented. If an
+	include points to an element with the same name as the parent, then that element's
+	contents will be included. This supports the merge style of inclusion.    
+	
+	When an inclusion is made, it is preceded by a PI with target DSDL_INCLUDE_START
+	and the href and closed by a PI with target DSDL_INCLUDE_START and the href. This is
+	to allow better location of problems, though only to the file level. 
+	
+	Limitations:
+	* No rebasing: relative paths will be interpreted based on the initial document's
+	path, not the including document. (Severe limitation!)
+	* No checking for circular references
+	* Not full xpointers: only ID matching
+	* <relax:include> not implemented 
+	* XInclude handling of xml:base and xml:lang not implemented   
+-->
+<!-- 
+  VERSION INFORMATION
+	2009-02-25 
+	* Update DSDL namespace to use schematron.com
+	* Tested with SAXON9, Xalan 2.7.1, IE7, 
+	* IE does not like multiple variables in same template with same name: rename.   
+	2008-09-18
+	* Remove new behaviour for include, because it conflicts with existing usage [KH]
+	* Add extends[@href] element with that merge functionality
+	* Generate PIs to notate source of inclusions for potential better diagnostics
+	
+	2008-09-16
+	* Fix for XSLT1
+	
+	2008-08-28
+	* New behaviour for schematron includes: if the pointed to element is the same as the current,
+	include the children.
+	
+	2008-08-20
+	* Fix bug: in XSLT1 cannot do $document/id('x') but need to use for-each
+	
+	2008-08-04
+	* Add support for inclusions in old namespace  
+	
+	2008-08-03
+	* Fix wrong param name include-relaxng & include-crdl (KH, PH)
+	* Allow inclusion of XSLT and XHTML (KH)
+	* Fix inclusion of fragments (KH)
+	
+	2008-07-25
+	* Add selectable input parameter
+	
+	2008-07-24  
+	* RJ New
+-->
+<!--
+	LEGAL INFORMATION
+	
+	Copyright (c) 2008 Rick Jelliffe 
+	
+	This software is provided 'as-is', without any express or implied warranty. 
+	In no event will the authors be held liable for any damages arising from 
+	the use of this software.
+	
+	Permission is granted to anyone to use this software for any purpose, 
+	including commercial applications, and to alter it and redistribute it freely,
+	subject to the following restrictions:
+	
+	1. The origin of this software must not be misrepresented; you must not claim
+	that you wrote the original software. If you use this software in a product, 
+	an acknowledgment in the product documentation would be appreciated but is 
+	not required.
+	
+	2. Altered source versions must be plainly marked as such, and must not be 
+	misrepresented as being the original software.
+	
+	3. This notice may not be removed or altered from any source distribution.
+-->
+<xslt:stylesheet version="1.0"
+	xmlns:xslt="http://www.w3.org/1999/XSL/Transform"
+	xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
+	xmlns:iso="http://purl.oclc.org/dsdl/schematron"
+	xmlns:nvdl="http://purl.oclc.org/dsdl/nvdl"
+	xmlns:xhtml="http://www.w3.org/1999/xhtml"
+	xmlns:schold="http://www.ascc.net/xml/schematron"
+	xmlns:crdl="http://purl.oclc.org/dsdl/crepdl/ns/structure/1.0"
+	xmlns:xi="http://www.w3.org/2001/XInclude"
+	xmlns:dtll="http://www.jenitennison.com/datatypes"
+	xmlns:dsdl="http://www.schematron.com/namespace/dsdl"
+	xmlns:relax="http://relaxng.org/ns/structure/1.0"
+	xmlns:xlink="http://www.w3.org/1999/xlink">
+	<!-- Note: The URL for the dsdl namespace is not official -->
+
+
+	<xsl:param name="include-schematron">true</xsl:param>
+	<xsl:param name="include-crdl">true</xsl:param>
+	<xsl:param name="include-xinclude">true</xsl:param>
+	<xsl:param name="include-dtll">true</xsl:param>
+	<xsl:param name="include-relaxng">true</xsl:param>
+	<xsl:param name="include-xlink">true</xsl:param>
+
+	<xsl:template match="/">
+		<xsl:apply-templates select="." mode="dsdl:go" />
+	</xsl:template>
+
+	<!-- output everything else unchanged -->
+	<xslt:template match="node()" priority="-1" mode="dsdl:go">
+		<xslt:copy>
+			<xslt:copy-of select="@*" />
+			<xslt:apply-templates mode="dsdl:go" />
+		</xslt:copy>
+	</xslt:template>
+
+
+
+	<!-- =========================================================== -->
+	<!-- ISO/IEC 19757 - DSDL Document Schema Definition Languages   -->
+	<!-- Part 2 - Regular grammar-based validation - RELAX NG        -->
+	<!-- This only implements relax:extRef not relax:include which   -->
+	<!-- is complex.                                                 -->
+	<!-- =========================================================== -->
+	<xslt:template match="relax:extRef" mode="dsdl:go">
+
+
+		<!-- Insert subschema -->
+
+		<xsl:variable name="document-uri"
+			select="substring-before(concat(@href,'#'), '#')" />
+		<xsl:variable name="fragment-id"
+			select="substring-after(@href, '#')" />
+
+		<xsl:processing-instruction name="DSDL_INCLUDE_START">
+			<xsl:value-of select="@href" />
+		</xsl:processing-instruction>
+		<xsl:choose>
+			<xsl:when test="not( $include-relaxng = 'true' )">
+				<xslt:copy>
+					<xslt:copy-of select="@*" />
+					<xslt:apply-templates mode="dsdl:go" />
+				</xslt:copy>
+			</xsl:when>
+			<xsl:otherwise>
+
+				<xsl:choose>
+
+					<xsl:when
+						test="string-length( $document-uri ) = 0 and string-length( $fragment-id ) = 0">
+						<xsl:message>
+							Error: Impossible URL in RELAX NG extRef
+							include
+						</xsl:message>
+					</xsl:when>
+
+					<!-- this case is when there is in embedded schema in the same document elsewhere -->
+					<xslt:when
+						test="string-length( $document-uri ) = 0">
+						<xslt:apply-templates mode="dsdl:go"
+							select="//*[@xml:id= $fragment-id ] | id( $fragment-id) | //*[@id= $fragment-id ]" />
+					</xslt:when>
+
+					<xsl:when
+						test="string-length( $fragment-id ) &gt; 0">
+						<xsl:variable name="theDocument_1"
+							select="document( $document-uri,/ )" />
+
+						<xsl:if test="not($theDocument_1)">
+							<xsl:message terminate="no">
+								<xsl:text>Unable to open referenced included file: </xsl:text>
+								<xsl:value-of select="@href" />
+							</xsl:message>
+						</xsl:if>
+						<!-- use a for-each so that the id() function works correctly on the external document -->
+						<xsl:for-each select="$theDocument_1">
+							<xsl:variable name="theFragment_1"
+								select="$theDocument_1//*[@xml:id= $fragment-id ]        
+                  |  id( $fragment-id)          
+              | $theDocument_1//*[@id= $fragment-id ]" />
+							<xsl:if test="not($theFragment_1)">
+								<xsl:message terminate="no">
+									<xsl:text>Unable to locate id attribute: </xsl:text>
+									<xsl:value-of select="@href" />
+								</xsl:message>
+							</xsl:if>
+							<xsl:apply-templates
+								select=" $theFragment_1[1]" mode="dsdl:go" />
+						</xsl:for-each>
+					</xsl:when>
+
+					<xsl:otherwise>
+						<xsl:variable name="theDocument_2"
+							select="document( $document-uri,/ )" />
+						<xsl:variable name="theFragment_2"
+							select="$theDocument_2/*" />
+						<xsl:if test="not($theDocument_2)">
+							<xsl:message terminate="no">
+								<xsl:text>Unable to open referenced included file: </xsl:text>
+								<xsl:value-of select="@href" />
+							</xsl:message>
+						</xsl:if>
+
+						<xsl:if test="not($theFragment_2)">
+							<xsl:message terminate="no">
+								<xsl:text>Unable to locate id attribute: </xsl:text>
+								<xsl:value-of select="@href" />
+							</xsl:message>
+						</xsl:if>
+						<xsl:apply-templates select="$theFragment_2 "
+							mode="dsdl:go" />
+					</xsl:otherwise>
+				</xsl:choose>
+
+			</xsl:otherwise>
+		</xsl:choose>
+
+		<xsl:processing-instruction name="DSDL_INCLUDE_END">
+			<xsl:value-of select="@href" />
+		</xsl:processing-instruction>
+	</xslt:template>
+
+
+
+	<!-- =========================================================== -->
+	<!-- ISO/IEC 19757 - DSDL Document Schema Definition Languages   -->
+	<!-- Part 3 - Rule-based validation - Schematron                 -->
+	<!-- =========================================================== -->
+
+
+	<!-- Extend the URI syntax to allow # references -->
+	<!-- Add experimental support for simple containers like  /xxx:xxx/iso:pattern to allow better includes -->
+	<xsl:template match="iso:include" mode="dsdl:go">
+
+		<xsl:variable name="document-uri"
+			select="substring-before(concat(@href,'#'), '#')" />
+		<xsl:variable name="fragment-id"
+			select="substring-after(@href, '#')" />
+
+
+		<xsl:processing-instruction name="DSDL_INCLUDE_START">
+			<xsl:value-of select="@href" />
+		</xsl:processing-instruction>
+
+		<xsl:choose>
+			<xsl:when test="not( $include-schematron = 'true' )">
+				<xslt:copy>
+					<xslt:copy-of select="@*" />
+					<xslt:apply-templates mode="dsdl:go" />
+				</xslt:copy>
+			</xsl:when>
+			<xsl:otherwise>
+
+				<xsl:choose>
+
+					<xsl:when
+						test="string-length( $document-uri ) = 0 and string-length( $fragment-id ) = 0">
+						<xsl:message>
+							Error: Impossible URL in Schematron include
+						</xsl:message>
+					</xsl:when>
+
+					<!-- this case is when there is in embedded schema in the same document elsewhere -->
+					<xslt:when
+						test="string-length( $document-uri ) = 0">
+						<xslt:apply-templates mode="dsdl:go"
+							select="//iso:*[@xml:id= $fragment-id ] 
+              	 |id( $fragment-id)
+              	 | //iso:*[@id= $fragment-id ]" />
+					</xslt:when>
+
+					<!-- case where there is a fragment in another document (should be an iso: element) -->
+					<!-- There are three cases for includes with fragment:
+						0) No href file or no matching id - error!
+						1) REMOVED
+						
+						2) The linked-to element is sch:schema however the parent of the include
+						is not a schema. In this case, it is an error. (Actually, it should
+						be an error for other kinds of containment problems, but we won't
+						check for them in this version.)
+						
+						3) Otherwise, include the pointed-to element
+					-->
+
+					<xsl:when
+						test="string-length( $fragment-id ) &gt; 0">
+						<xsl:variable name="theDocument_1"
+							select="document( $document-uri,/ )" />
+						<xsl:variable name="originalParent" select=".." />
+
+						<!-- case 0 -->
+						<xsl:if test="not($theDocument_1)">
+							<xsl:message terminate="no">
+								<xsl:text>Unable to open referenced included file: </xsl:text>
+								<xsl:value-of select="@href" />
+							</xsl:message>
+						</xsl:if>
+						<!-- use for-each to rebase id() to external document -->
+						<xsl:for-each select="$theDocument_1">
+							<xsl:variable name="theFragment_1"
+								select=" $theDocument_1//iso:*[@xml:id= $fragment-id ] |
+              	 		id($fragment-id) |
+              			$theDocument_1//iso:*[@id= $fragment-id ]" />
+
+
+							<xsl:choose>
+								<!-- case 0 -->
+								<xsl:when test="not($theFragment_1)">
+									<xsl:message terminate="no">
+										<xsl:text>Unable to locate id attribute: </xsl:text>
+										<xsl:value-of select="@href" />
+									</xsl:message>
+								</xsl:when>
+
+
+								<!-- case 1 REMOVED -->
+
+								<!-- case 2 -->
+								<xsl:when
+									test=" $theFragment_1/self::iso:schema ">
+									<xsl:message>
+										Schema error: Use include to
+										include fragments, not a whole
+										schema
+									</xsl:message>
+								</xsl:when>
+
+								<!-- case 3 -->
+								<xsl:otherwise>
+									<xsl:apply-templates
+										select=" $theFragment_1[1]" mode="dsdl:go" />
+								</xsl:otherwise>
+							</xsl:choose>
+						</xsl:for-each>
+					</xsl:when>
+
+					<!-- Case where there is no ID so we include the whole document -->
+					<!-- Experimental addition: include fragments of children -->
+					<xsl:otherwise>
+						<xsl:variable name="theDocument_2"
+							select="document( $document-uri,/ )" />
+						<xsl:variable name="theFragment_2"
+							select="$theDocument_2/iso:*" />
+						<xsl:variable name="theContainedFragments"
+							select="$theDocument_2/*/iso:* | $theDocument_2/*/xsl:* | $theDocument_2/*/xhtml:*" />
+						<xsl:if test="not($theDocument_2)">
+							<xsl:message terminate="no">
+								<xsl:text>Unable to open referenced included file: </xsl:text>
+								<xsl:value-of select="@href" />
+							</xsl:message>
+						</xsl:if>
+
+						<!-- There are three cases for includes:
+							0) No text specified- error!
+							
+							1) REMOVED
+							
+							2) The linked-to element is sch:schema however the parent of the include
+							is not a schema. In this case, it is an error. (Actually, it should
+							be an error for other kinds of containment problems, but we won't
+							check for them in this version.)
+							
+							3) Otherwise, include the pointed-to element
+						-->
+						<xsl:choose>
+							<!-- case 0 -->
+							<xsl:when
+								test="not($theFragment_2) and not ($theContainedFragments)">
+								<xsl:message terminate="no">
+									<xsl:text>Unable to locate id attribute: </xsl:text>
+									<xsl:value-of select="@href" />
+								</xsl:message>
+							</xsl:when>
+
+							<!-- case 1 removed -->
+
+							<!-- case 2 -->
+							<xsl:when
+								test=" $theFragment_2/self::iso:schema or $theContainedFragments/self::iso:schema">
+								<xsl:message>
+									Schema error: Use include to include
+									fragments, not a whole schema
+								</xsl:message>
+							</xsl:when>
+
+							<!-- If this were XLST 2, we could use  
+								if ($theFragment) then $theFragment else $theContainedFragments
+								here (thanks to KN)
+							-->
+							<!-- case 3 -->
+							<xsl:otherwise>
+								<xsl:apply-templates
+									select="$theFragment_2 " mode="dsdl:go" />
+							</xsl:otherwise>
+						</xsl:choose>
+					</xsl:otherwise>
+				</xsl:choose>
+			</xsl:otherwise>
+		</xsl:choose>
+
+		<xsl:processing-instruction name="DSDL_INCLUDE_END">
+			<xsl:value-of select="@href" />
+		</xsl:processing-instruction>
+	</xsl:template>
+
+
+	<!-- WARNING   sch:extends[@href] is experimental and non standard  -->
+	<!-- Basically, it adds the children of the selected element, not the element itself.  -->
+	<xsl:template match="iso:extends[@href]" mode="dsdl:go">
+
+		<xsl:variable name="document-uri"
+			select="substring-before(concat(@href,'#'), '#')" />
+		<xsl:variable name="fragment-id"
+			select="substring-after(@href, '#')" />
+
+
+		<xsl:processing-instruction name="DSDL_INCLUDE_START">
+			<xsl:value-of select="@href" />
+		</xsl:processing-instruction>
+
+		<xsl:choose>
+			<xsl:when test="not( $include-schematron = 'true' )">
+				<xslt:copy>
+					<xslt:copy-of select="@*" />
+					<xslt:apply-templates mode="dsdl:go" />
+				</xslt:copy>
+			</xsl:when>
+			<xsl:otherwise>
+
+				<xsl:choose>
+
+					<xsl:when
+						test="string-length( $document-uri ) = 0 and string-length( $fragment-id ) = 0">
+						<xsl:message>
+							Error: Impossible URL in Schematron include
+						</xsl:message>
+					</xsl:when>
+
+					<!-- this case is when there is in embedded schema in the same document elsewhere -->
+					<xslt:when
+						test="string-length( $document-uri ) = 0">
+						<xslt:apply-templates mode="dsdl:go"
+							select="//iso:*[@xml:id= $fragment-id ]/* 
+              	 |id( $fragment-id)/*
+              	 | //iso:*[@id= $fragment-id ]/*" />
+					</xslt:when>
+
+					<!-- case where there is a fragment in another document (should be an iso: element) -->
+					<!-- There are three cases for includes with fragment:
+						0) No href file or no matching id - error!
+						1) REMOVED
+						
+						2) REMOVED
+						
+						3) Otherwise, include the pointed-to element
+					-->
+
+					<xsl:when
+						test="string-length( $fragment-id ) &gt; 0">
+						<xsl:variable name="theDocument_1"
+							select="document( $document-uri,/ )" />
+						<xsl:variable name="originalParent" select=".." />
+
+						<!-- case 0 -->
+						<xsl:if test="not($theDocument_1)">
+							<xsl:message terminate="no">
+								<xsl:text>Unable to open referenced included file: </xsl:text>
+								<xsl:value-of select="@href" />
+							</xsl:message>
+						</xsl:if>
+						<!-- use for-each to rebase id() to external document -->
+						<xsl:for-each select="$theDocument_1">
+							<xsl:variable name="theFragment_1"
+								select=" $theDocument_1//iso:*[@xml:id= $fragment-id ] |
+              	 		id($fragment-id) |
+              			$theDocument_1//iso:*[@id= $fragment-id ]" />
+
+
+							<xsl:choose>
+								<!-- case 0 -->
+								<xsl:when test="not($theFragment_1)">
+									<xsl:message terminate="no">
+										<xsl:text>Unable to locate id attribute: </xsl:text>
+										<xsl:value-of select="@href" />
+									</xsl:message>
+								</xsl:when>
+
+
+								<!-- case 1 REMOVED -->
+
+								<!-- case 2 REMOVED -->
+
+
+								<!-- case 3 -->
+								<xsl:otherwise>
+
+									<xsl:apply-templates
+										select=" $theFragment_1[1]/*" mode="dsdl:go" />
+								</xsl:otherwise>
+							</xsl:choose>
+						</xsl:for-each>
+					</xsl:when>
+
+					<!-- Case where there is no ID so we include the whole document -->
+					<!-- Experimental addition: include fragments of children -->
+					<xsl:otherwise>
+						<xsl:variable name="theDocument_2"
+							select="document( $document-uri,/ )" />
+						<xsl:variable name="theFragment_2"
+							select="$theDocument_2/iso:*" />
+						<xsl:variable name="theContainedFragments"
+							select="$theDocument_2/*/iso:* | $theDocument_2/*/xsl:* | $theDocument_2/*/xhtml:*" />
+						<xsl:if test="not($theDocument_2)">
+							<xsl:message terminate="no">
+								<xsl:text>Unable to open referenced included file: </xsl:text>
+								<xsl:value-of select="@href" />
+							</xsl:message>
+						</xsl:if>
+
+						<!-- There are three cases for includes:
+							0) No text specified- error!
+							
+							1) REMOVED
+							
+							2) REMOVED
+							
+							3) Otherwise, include the pointed-to element
+						-->
+						<xsl:choose>
+							<!-- case 0 -->
+							<xsl:when
+								test="not($theFragment_2) and not ($theContainedFragments)">
+								<xsl:message terminate="no">
+									<xsl:text>Unable to locate id attribute: </xsl:text>
+									<xsl:value-of select="@href" />
+								</xsl:message>
+							</xsl:when>
+
+							<!-- case 1 removed -->
+
+							<!-- case 2 removed -->
+
+							<!-- If this were XLST 2, we could use  
+								if ($theFragment) then $theFragment else $theContainedFragments
+								here (thanks to KN)
+							-->
+							<!-- case 3 -->
+							<xsl:otherwise>
+								<xsl:apply-templates
+									select="$theFragment_2/* " mode="dsdl:go" />
+							</xsl:otherwise>
+						</xsl:choose>
+					</xsl:otherwise>
+				</xsl:choose>
+			</xsl:otherwise>
+		</xsl:choose>
+
+		<xsl:processing-instruction name="DSDL_INCLUDE_END">
+			<xsl:value-of select="@href" />
+		</xsl:processing-instruction>
+	</xsl:template>
+
+
+
+	<!-- =========================================================== -->
+	<!-- Handle Schematron 1.6 inclusions: clone of ISO code above   -->
+	<!-- =========================================================== -->
+
+
+	<!-- Extend the URI syntax to allow # references -->
+	<!-- Add experimental support for simple containers like  /xxx:xxx/schold:pattern to allow better includes -->
+	<xsl:template match="schold:include" mode="dsdl:go">
+		<xsl:variable name="document-uri"
+			select="substring-before(concat(@href,'#'), '#')" />
+		<xsl:variable name="fragment-id"
+			select="substring-after(@href, '#')" />
+
+		<xsl:processing-instruction name="DSDL_INCLUDE_START">
+			<xsl:value-of select="@href" />
+		</xsl:processing-instruction>
+
+		<xsl:choose>
+			<xsl:when test="not( $include-schematron = 'true' )">
+				<xslt:copy>
+					<xslt:copy-of select="@*" />
+					<xslt:apply-templates mode="dsdl:go" />
+				</xslt:copy>
+			</xsl:when>
+			<xsl:otherwise>
+				<xsl:choose>
+
+					<xsl:when
+						test="string-length( $document-uri ) = 0 and string-length( $fragment-id ) = 0">
+						<xsl:message>
+							Error: Impossible URL in Schematron include
+						</xsl:message>
+					</xsl:when>
+
+					<!-- this case is when there is in embedded schema in the same document elsewhere -->
+					<xslt:when
+						test="string-length( $document-uri ) = 0">
+						<xslt:apply-templates mode="dsdl:go"
+							select="//schold:*[@xml:id= $fragment-id ] 
+              	 |id( $fragment-id)
+              	 | //schold:*[@id= $fragment-id ]" />
+					</xslt:when>
+
+					<!-- case where there is a fragment in another document (should be an iso: element) -->
+					<xsl:when
+						test="string-length( $fragment-id ) &gt; 0">
+						<xsl:variable name="theDocument_1"
+							select="document( $document-uri,/ )" />
+						<xsl:if test="not($theDocument_1)">
+							<xsl:message terminate="no">
+								<xsl:text>Unable to open referenced included file: </xsl:text>
+								<xsl:value-of select="@href" />
+							</xsl:message>
+						</xsl:if>
+						<!-- use for-each to rebase id() to $theDocument -->
+						<xsl:for-each select="$theDocument_1">
+							<xsl:variable name="theFragment_1"
+								select=" $theDocument_1//schold:*[@xml:id= $fragment-id ] |
+              	id($fragment-id) |
+              	$theDocument_1//schold:*[@id= $fragment-id ]" />
+							<xsl:if
+								test=" $theFragment_1/self::schold:schema ">
+								<xsl:message>
+									Schema error: Use include to include
+									fragments, not a whole schema
+								</xsl:message>
+							</xsl:if>
+							<xsl:if test="not($theFragment_1)">
+								<xsl:message terminate="no">
+									<xsl:text>Unable to locate id attribute: </xsl:text>
+									<xsl:value-of select="@href" />
+								</xsl:message>
+							</xsl:if>
+							<xsl:apply-templates
+								select=" $theFragment_1[1]" mode="dsdl:go" />
+						</xsl:for-each>
+					</xsl:when>
+
+					<!-- Case where there is no ID so we include the whole document -->
+					<!-- Experimental addition: include fragments of children -->
+					<xsl:otherwise>
+						<xsl:variable name="theDocument_2"
+							select="document( $document-uri,/ )" />
+						<xsl:variable name="theFragment_2"
+							select="$theDocument_2/iso:*" />
+						<xsl:variable name="theContainedFragments"
+							select="$theDocument_2/*/schold:* | $theDocument_2/*/xsl:* | $theDocument_2/*/xhtml:*" />
+						<xsl:if test="not($theDocument_2)">
+							<xsl:message terminate="no">
+								<xsl:text>Unable to open referenced included file: </xsl:text>
+								<xsl:value-of select="@href" />
+							</xsl:message>
+						</xsl:if>
+
+						<xsl:if
+							test=" $theFragment_2/self::schold:schema or $theContainedFragments/self::schold:schema">
+							<xsl:message>
+								Schema error: Use include to include
+								fragments, not a whole schema
+							</xsl:message>
+						</xsl:if>
+						<xsl:if
+							test="not($theFragment_2) and not ($theContainedFragments)">
+							<xsl:message terminate="no">
+								<xsl:text>Unable to locate id attribute: </xsl:text>
+								<xsl:value-of select="@href" />
+							</xsl:message>
+						</xsl:if>
+						<!-- If this were XLST 2, we could use  
+							if ($theFragment) then $theFragment else $theContainedFragments
+							here (thanks to KN)
+						-->
+						<xsl:choose>
+							<xsl:when test=" $theFragment_2 ">
+								<xsl:apply-templates
+									select="$theFragment_2 " mode="dsdl:go" />
+							</xsl:when>
+							<xsl:otherwise>
+								<!-- WARNING!  EXPERIMENTAL! Use at your own risk. This may be discontinued! -->
+								<xsl:apply-templates
+									select="  $theContainedFragments " mode="dsdl:go" />
+							</xsl:otherwise>
+						</xsl:choose>
+					</xsl:otherwise>
+				</xsl:choose>
+
+			</xsl:otherwise>
+		</xsl:choose>
+
+		<xsl:processing-instruction name="DSDL_INCLUDE_END">
+			<xsl:value-of select="@href" />
+		</xsl:processing-instruction>
+	</xsl:template>
+	<!-- =========================================================== -->
+	<!-- ISO/IEC 19757 - DSDL Document Schema Definition Languages   -->
+	<!-- Part 5 - DataType Library Language - DTLL                   -->
+	<!-- Committee Draft  Experimental support only                  -->
+	<!-- The <include> element may well be replaced by XInclude in   -->
+	<!-- any final version.                                          -->
+	<!-- =========================================================== -->
+	<xslt:template match="dtll:include" mode="dsdl:go">
+		<!-- Insert subschema -->
+
+		<xsl:variable name="document-uri"
+			select="substring-before(concat(@href,'#'), '#')" />
+		<xsl:variable name="fragment-id"
+			select="substring-after(@href, '#')" />
+		<xsl:processing-instruction name="DSDL_INCLUDE_START">
+			<xsl:value-of select="@href" />
+		</xsl:processing-instruction>
+		<xsl:choose>
+			<xsl:when test="not( $include-dtll = 'true' )">
+				<xslt:copy>
+					<xslt:copy-of select="@*" />
+					<xslt:apply-templates mode="dsdl:go" />
+				</xslt:copy>
+			</xsl:when>
+			<xsl:otherwise>
+				<xsl:choose>
+
+					<xsl:when
+						test="string-length( $document-uri ) = 0 and string-length( $fragment-id ) = 0">
+						<xsl:message>
+							Error: Impossible URL in DTLL include
+						</xsl:message>
+					</xsl:when>
+
+					<!-- this case is when there is in embedded schema in the same document elsewhere -->
+					<xslt:when
+						test="string-length( $document-uri ) = 0">
+						<xslt:apply-templates mode="dsdl:go"
+							select="//*[@xml:id= $fragment-id ] | id( $fragment-id) 
+              	| //*[@id= $fragment-id ]" />
+					</xslt:when>
+
+					<xsl:when
+						test="string-length( $fragment-id ) &gt; 0">
+						<xsl:variable name="theDocument_1"
+							select="document( $document-uri,/ )" />
+						<xsl:if test="not($theDocument_1)">
+							<xsl:message terminate="no">
+								<xsl:text>Unable to open referenced included file: </xsl:text>
+								<xsl:value-of select="@href" />
+							</xsl:message>
+						</xsl:if>
+						<!-- use for-each to rebase id() to $theDocument -->
+						<xsl:for-each select="$theDocument_1">
+							<xsl:variable name="theFragment_1"
+								select="$theDocument_1//*[@xml:id= $fragment-id ]
+               | id( $fragment-id ) 
+               | $theDocument_1//*[@id= $fragment-id ]" />
+							<xsl:if test="not($theFragment_1)">
+								<xsl:message terminate="no">
+									<xsl:text>Unable to locate id attribute: </xsl:text>
+									<xsl:value-of select="@href" />
+								</xsl:message>
+							</xsl:if>
+							<xsl:apply-templates
+								select=" $theFragment_1[1]" mode="dsdl:go" />
+						</xsl:for-each>
+					</xsl:when>
+
+					<xsl:otherwise>
+						<xsl:variable name="theDocument_2"
+							select="document( $document-uri,/ )" />
+						<xsl:variable name="theFragment_2"
+							select="$theDocument_2/*" />
+
+						<xsl:if test="not($theDocument_2)">
+							<xsl:message terminate="no">
+								<xsl:text>Unable to open referenced included file: </xsl:text>
+								<xsl:value-of select="@href" />
+							</xsl:message>
+						</xsl:if>
+
+						<xsl:if test="not($theFragment_2)">
+							<xsl:message terminate="no">
+								<xsl:text>Unable to locate id attribute: </xsl:text>
+								<xsl:value-of select="@href" />
+							</xsl:message>
+						</xsl:if>
+						<xsl:apply-templates select="$theFragment_2 "
+							mode="dsdl:go" />
+					</xsl:otherwise>
+				</xsl:choose>
+
+			</xsl:otherwise>
+		</xsl:choose>
+		<xsl:processing-instruction name="DSDL_INCLUDE_END">
+			<xsl:value-of select="@href" />
+		</xsl:processing-instruction>
+	</xslt:template>
+
+	<!-- =========================================================== -->
+	<!-- ISO/IEC 19757 - DSDL Document Schema Definition Languages   -->
+	<!-- Part 7 - Character Repertoire Description Language - CRDL   -->
+	<!-- Final Committee Draft 2008-01-11 Experimental support only  -->
+	<!-- =========================================================== -->
+	<xslt:template match="crdl:ref" mode="dsdl:go">
+		<!-- Insert subschema -->
+
+		<xsl:variable name="document-uri"
+			select="substring-before(concat(@href,'#'), '#')" />
+		<xsl:variable name="fragment-id"
+			select="substring-after(@href, '#')" />
+		<xsl:processing-instruction name="DSDL_INCLUDE_START">
+			<xsl:value-of select="@href" />
+		</xsl:processing-instruction>
+		<xsl:choose>
+			<xsl:when test="not( $include-crdl = 'true' )">
+				<xslt:copy>
+					<xslt:copy-of select="@*" />
+					<xslt:apply-templates mode="dsdl:go" />
+				</xslt:copy>
+			</xsl:when>
+			<xsl:otherwise>
+				<xsl:choose>
+
+					<xsl:when
+						test="string-length( $document-uri ) = 0 and string-length( $fragment-id ) = 0">
+						<xsl:message>
+							Error: Impossible URL in CRDL include
+						</xsl:message>
+					</xsl:when>
+
+					<!-- this case is when there is in embedded schema in the same document elsewhere -->
+					<xslt:when
+						test="string-length( $document-uri ) = 0">
+
+						<xslt:apply-templates mode="dsdl:go"
+							select="//*[@xml:id= $fragment-id ] | id( $fragment-id)
+              	| //*[@id= $fragment-id ]" />
+					</xslt:when>
+
+					<xsl:when
+						test="string-length( $fragment-id ) &gt; 0">
+						<xsl:variable name="theDocument_1"
+							select="document( $document-uri,/ )" />
+						<xsl:if test="not($theDocument_1)">
+							<xsl:message terminate="no">
+								<xsl:text>Unable to open referenced included file: </xsl:text>
+								<xsl:value-of select="@href" />
+							</xsl:message>
+						</xsl:if>
+						<!-- use for-each to rebase id() to $theDocument -->
+						<xsl:for-each select="$theDocument_1">
+							<xsl:variable name="theFragment_1"
+								select="$theDocument_1//*[@xml:id= $fragment-id ]
+               | id( $fragment-id )
+               | $theDocument_1//*[@id= $fragment-id ]" />
+
+							<xsl:if test="not($theFragment_1)">
+								<xsl:message terminate="no">
+									<xsl:text>Unable to locate id attribute: </xsl:text>
+									<xsl:value-of select="@href" />
+								</xsl:message>
+							</xsl:if>
+							<xsl:apply-templates select=" $theFragment_1 "
+								mode="dsdl:go" />
+						</xsl:for-each>
+					</xsl:when>
+
+					<xsl:otherwise>
+						<xsl:variable name="theDocument_2"
+							select="document( $document-uri,/ )" />
+						<xsl:variable name="theFragment_2"
+							select="$theDocument_2/*" />
+
+						<xsl:if test="not($theDocument_2)">
+							<xsl:message terminate="no">
+								<xsl:text>Unable to open referenced included file: </xsl:text>
+								<xsl:value-of select="@href" />
+							</xsl:message>
+						</xsl:if>
+						<xsl:if test="not($theFragment_2)">
+							<xsl:message terminate="no">
+								<xsl:text>Unable to locate id attribute: </xsl:text>
+								<xsl:value-of select="@href" />
+							</xsl:message>
+						</xsl:if>
+
+						<xsl:apply-templates select="$theFragment_2"
+							mode="dsdl:go" />
+					</xsl:otherwise>
+				</xsl:choose>
+
+			</xsl:otherwise>
+		</xsl:choose>
+		<xsl:processing-instruction name="DSDL_INCLUDE_END">
+			<xsl:value-of select="@href" />
+		</xsl:processing-instruction>
+	</xslt:template>
+
+
+	<!-- =========================================================== -->
+	<!-- ISO/IEC 19757 - DSDL Document Schema Definition Languages   -->
+	<!-- Part 4 - Namespace-based Validation Dispatching Language - NVDL -->
+	<!-- Note: This does not include schemas referenced for          -->
+	<!-- validation, it merely handles any simple XIncludes          -->
+	<!-- =========================================================== -->
+	<!-- ISO/IEC 19757 - DSDL Document Schema Definition Languages   -->
+	<!-- Part 8 - Document Schema Renaming Language - DSRL           -->
+	<!-- Note: Final? Committee Draft   Experimental support only    -->
+	<!-- =========================================================== -->
+	<!-- XInclude support for id based references only, with 1 level -->
+	<!-- of fallback.                                                -->
+	<!-- =========================================================== -->
+
+	<xslt:template mode="dsdl:go"
+		match="xi:include[@href][not(@parseType) or @parseType ='xml']">
+		<!-- Simple inclusions only here -->
+		<xsl:processing-instruction name="DSDL_INCLUDE_START">
+			<xsl:value-of select="@href" />
+		</xsl:processing-instruction>
+		<xsl:choose>
+			<xsl:when test="not( $include-xinclude = 'true' )">
+				<xslt:copy>
+					<xslt:copy-of select="@*" />
+					<xslt:apply-templates mode="dsdl:go" />
+				</xslt:copy>
+			</xsl:when>
+			<xsl:otherwise>
+				<xsl:choose>
+
+					<xsl:when test="contains( @href, '#')">
+						<xsl:message terminate="yes">
+							Fatal error: Xinclude href contains fragment
+							identifier #
+						</xsl:message>
+					</xsl:when>
+
+
+					<xsl:when test="contains( @xpointer, '(')">
+						<xsl:message terminate="yes">
+							Fatal error: Sorry, this software only
+							supports simple ids in XInclude xpointers
+						</xsl:message>
+					</xsl:when>
+
+					<xsl:when
+						test="string-length( @href ) = 0 and string-length( @xpointer ) = 0">
+
+						<xsl:message terminate="yes">
+							Fatal Error: Impossible URL in XInclude
+							include
+						</xsl:message>
+					</xsl:when>
+
+					<!-- this case is when there is in embedded schema in the same document elsewhere -->
+					<xslt:when test="string-length( @href ) = 0">
+
+						<xslt:apply-templates mode="dsdl:go"
+							select="//*[@xml:id= current()/@xpointer  ] | id( @xpointer)
+              	| //*[@id= current()/@xpointer  ]" />
+					</xslt:when>
+
+					<xsl:when
+						test="string-length( @xpointer ) &gt; 0">
+						<xsl:variable name="theDocument_1"
+							select="document( @href,/ )" />
+						<xsl:variable name="theFragment_1"
+							select="$theDocument_1//*[@xml:id= current()/@xpointer  ]
+             
+              | $theDocument_1//*[@id= current()/@xpointer  ]" />
+						<!-- removed
+							| $theDocument_1/id( @xpointer)
+							because it requires rebasing in XSLT1 and that would mess up the use of current()
+						-->
+
+
+						<!-- Allow one level of fallback, to another XInclude -->
+						<xsl:if test="not($theDocument_1)">
+							<xsl:choose>
+								<xsl:when test="xi:fallback">
+									<xsl:variable name="theDocument_2"
+										select="document( xi:fallback[1]/xi:include[not(@parseType)
+                    	 or @parseType='xml']/@href,/ )" />
+									<xsl:variable name="theFragment_2"
+										select="$theDocument_2//*[@xml:id= current()/xi:fallback[1]/xi:include/@xpointer  ]
+              				| $theDocument_2//*[@id= current()/xi:fallback[1]/xi:include/@xpointer  ]" />
+									<!-- removed 
+										| $theDocument_2/id( xi:fallback[1]/xi:include/@xpointer)
+										because it id() would need rebasing in XSLT1 and that would mess up use of current()
+									-->
+
+									<xsl:if
+										test="not($theDocument_2)">
+
+										<xsl:message terminate="no">
+											<xsl:text>Unable to open referenced included file and fallback
+									file: </xsl:text>
+											<xsl:value-of
+												select="@href" />
+										</xsl:message>
+									</xsl:if>
+								</xsl:when>
+								<xsl:otherwise>
+									<xsl:message terminate="no">
+										<xsl:text>Unable to open referenced included file: </xsl:text>
+										<xsl:value-of select="@href" />
+									</xsl:message>
+								</xsl:otherwise>
+							</xsl:choose>
+						</xsl:if>
+						<xsl:apply-templates select=" $theFragment_1"
+							mode="dsdl:go" />
+					</xsl:when>
+
+					<!-- Document but no fragment specified -->
+					<xsl:otherwise>
+						<xsl:variable name="theDocument_3"
+							select="document( @href,/ )" />
+						<xsl:variable name="theFragment_3"
+							select="$theDocument_3/*" />
+
+						<xsl:if test="not($theDocument_3)">
+							<xsl:message terminate="no">
+								<xsl:text>Unable to open referenced included file: </xsl:text>
+								<xsl:value-of select="@href" />
+							</xsl:message>
+						</xsl:if>
+
+						<xsl:apply-templates select="$theFragment_3 "
+							mode="dsdl:go" />
+					</xsl:otherwise>
+				</xsl:choose>
+
+			</xsl:otherwise>
+		</xsl:choose>
+		<xsl:processing-instruction name="DSDL_INCLUDE_END">
+			<xsl:value-of select="@href" />
+		</xsl:processing-instruction>
+	</xslt:template>
+
+	<!-- =========================================================== -->
+	<!-- W3C XLink 1.1 embedded simple links                        -->
+	<!-- =========================================================== -->
+	<xslt:template
+		match="*[@xlink:href][not(parent::*[@xlink:type='complex'])]
+	           [not(@xlink:type) or (@xlink:type='simple')]
+	           [@xlink:show='embed']
+	           [not(@xlink:actuate) or (@xlink:actuate='onLoad')]"
+		mode="dsdl:go" priority="1">
+
+		<xsl:variable name="document-uri"
+			select="substring-before(concat(@xlink:href,'#'), '#')" />
+		<xsl:variable name="fragment-id"
+			select="substring-after(@xlink:href, '#')" />
+		<xsl:processing-instruction name="DSDL_INCLUDE_START">
+			<xsl:value-of select="@xlink:href" />
+		</xsl:processing-instruction>
+		<xsl:choose>
+			<xsl:when test="not( $include-xlink = 'true' )">
+				<xslt:copy>
+					<xslt:copy-of select="@*" />
+					<xslt:apply-templates mode="dsdl:go" />
+				</xslt:copy>
+			</xsl:when>
+			<xsl:otherwise>
+				<xsl:choose>
+
+					<xsl:when
+						test="string-length( $document-uri ) = 0 and string-length( $fragment-id ) = 0">
+						<xsl:message>
+							Error: Impossible URL in XLink embedding
+							link
+						</xsl:message>
+					</xsl:when>
+
+					<!-- this case is when there is in embedded schema in the same document elsewhere -->
+					<xslt:when
+						test="string-length( $document-uri ) = 0">
+						<xslt:apply-templates mode="dsdl:go"
+							select="//*[@xml:id= $fragment-id ] | id( $fragment-id) 
+              	| //*[@id= $fragment-id ]" />
+					</xslt:when>
+
+					<xsl:when
+						test="string-length( $fragment-id ) &gt; 0">
+						<xsl:variable name="theDocument_1"
+							select="document( $document-uri,/ )" />
+						<xsl:if test="not($theDocument_1)">
+							<xsl:message terminate="no">
+								<xsl:text>Unable to open referenced included file: </xsl:text>
+								<xsl:value-of select="@xlink:href" />
+							</xsl:message>
+						</xsl:if>
+						<!-- use for-each to rebase id() to $theDocument -->
+						<xsl:for-each select="$theDocument_1">
+							<xsl:variable name="theFragment_1"
+								select="$theDocument_1//*[@xml:id= $fragment-id ]
+               | id( $fragment-id ) 
+               | $theDocument_1//*[@id= $fragment-id ]" />
+							<xsl:if test="not($theFragment_1)">
+								<xsl:message terminate="no">
+									<xsl:text>Unable to locate id attribute: </xsl:text>
+									<xsl:value-of select="@xlink:href" />
+								</xsl:message>
+							</xsl:if>
+							<xsl:apply-templates
+								select=" $theFragment_1[1]" mode="dsdl:go" />
+						</xsl:for-each>
+					</xsl:when>
+
+					<xsl:otherwise>
+						<xsl:variable name="theDocument_2"
+							select="document( $document-uri,/ )" />
+						<xsl:variable name="theFragment_2"
+							select="$theDocument_2/*" />
+
+						<xsl:if test="not($theDocument_2)">
+							<xsl:message terminate="no">
+								<xsl:text>Unable to open referenced included file: </xsl:text>
+								<xsl:value-of select="@xlink:href" />
+							</xsl:message>
+						</xsl:if>
+
+						<xsl:if test="not($theFragment_2)">
+							<xsl:message terminate="no">
+								<xsl:text>Unable to locate id attribute: </xsl:text>
+								<xsl:value-of select="@xlink:href" />
+							</xsl:message>
+						</xsl:if>
+						<xsl:apply-templates select="$theFragment_2 "
+							mode="dsdl:go" />
+					</xsl:otherwise>
+				</xsl:choose>
+
+			</xsl:otherwise>
+		</xsl:choose>
+
+		<xsl:processing-instruction name="DSDL_INCLUDE_END">
+			<xsl:value-of select="@xlink:href" />
+		</xsl:processing-instruction>
+	</xslt:template>
+
+
+</xslt:stylesheet>

.venv/lib/python3.12/site-packages/lxml/isoschematron/resources/xsl/iso-schematron-xslt1/iso_schematron_message.xsl

@@ -0,0 +1,55 @@
+<?xml version="1.0" ?><?xar XSLT?>
+<!-- Implmentation for the Schematron XML Schema Language.
+	http://www.ascc.net/xml/resource/schematron/schematron.html
+ 
+ Copyright (c) 2000,2001 Rick Jelliffe and Academia Sinica Computing Center, Taiwan
+
+ This software is provided 'as-is', without any express or implied warranty. 
+ In no event will the authors be held liable for any damages arising from 
+ the use of this software.
+
+ Permission is granted to anyone to use this software for any purpose, 
+ including commercial applications, and to alter it and redistribute it freely,
+ subject to the following restrictions:
+
+ 1. The origin of this software must not be misrepresented; you must not claim
+ that you wrote the original software. If you use this software in a product, 
+ an acknowledgment in the product documentation would be appreciated but is 
+ not required.
+
+ 2. Altered source versions must be plainly marked as such, and must not be 
+ misrepresented as being the original software.
+
+ 3. This notice may not be removed or altered from any source distribution.
+-->
+
+<!-- Schematron message -->
+
+<xsl:stylesheet
+   version="1.0"
+   xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
+   xmlns:axsl="http://www.w3.org/1999/XSL/TransformAlias">
+
+<xsl:import href="iso_schematron_skeleton_for_xslt1.xsl"/>
+
+<xsl:template name="process-prolog">
+   <axsl:output method="text" />
+</xsl:template>
+
+<!-- use default rule for process-root:  copy contens / ignore title -->
+<!-- use default rule for process-pattern: ignore name and see -->
+<!-- use default rule for process-name:  output name -->
+<!-- use default rule for process-assert and process-report:
+     call process-message -->
+
+<xsl:template name="process-message">
+   <xsl:param name="pattern" />
+   <xsl:param name="role" />
+   <axsl:message>
+      <xsl:apply-templates mode="text"  
+      /> (<xsl:value-of select="$pattern" />
+      <xsl:if test="$role"> / <xsl:value-of select="$role" />
+      </xsl:if>)</axsl:message>
+</xsl:template>
+
+</xsl:stylesheet>

.venv/lib/python3.12/site-packages/lxml/isoschematron/resources/xsl/iso-schematron-xslt1/iso_schematron_skeleton_for_xslt1.xsl

@@ -0,0 +1,1796 @@
+<?xml version="1.0"?><?xar XSLT?>
+
+<!-- 
+   OVERVIEW
+   
+   ASCC/Schematron.com Skeleton Module for ISO Schematron (for XSLT1 systems)
+   
+   ISO Schematron is a language for making assertion about the presence or absence
+   of patterns in XML documents. It is typically used for as a schema language, or
+   to augment existing schema languages, and to check business rules. It is very
+   powerful, yet quite simple: a developer only need know XPath and about five other
+   elements.
+   
+   This is an open source implementation of ISO Schematron in XSLT. Although ISO does
+   not allow reference implementations which might compete with the text of the
+   standard, this code has been compiled by Rick Jelliffe, inventor of Schematron
+   and editor of the ISO standard; so developers can certainly use it as an 
+   unofficial reference implementation for clarification. 
+   
+   This implementation is based on one by Oliver Becker. API documentation is 
+   available separately; try www.schematron.com for this. Funding for this
+   stylesheet over the years has come from Topologi Pty. Ltd., Geotempo Ltd.,
+   and ASCC, Tapei.
+   
+   There are two versions of this skeleton: one is tailored for XSLT1 processors
+   and the other is tailored for XSLT2 processors. Future versions of the
+   XSLT2 skeleton may support more features than that the XSLT 1 skeleton.
+-->
+<!--
+   TIPS
+      
+   A tip for new users of Schematron: make your assertions contain positive messages
+   about what is expected, rather than error messages. For example, use the form
+   "An X should have a Y, because Z". 
+   
+   Another tip is that Schematron provides an
+   element <sch:ns> for declaring the namespaces and prefixes used in Xpaths in 
+   attribute values; it does not extend the XML Namespaces mechanism: if a name
+   in an XPath has a prefix, there must be an <sch:ns> element for that prefix; if
+   a name in an XPath does not have a prefix, it is always in no namespace.
+   
+   A tip for implementers of Schematron, either using this API or re-implementing it:
+   make the value of the diagnostics, flags and richer features available if possible;
+   Schematron has many of the optional richer features which, if implemented, provide
+   a compelling alternative approach to validation and business-rules checking compared
+   to other schema languages and programs. 
+   
+   If you create your own meta-stylesheet to override this one, it is a
+   good idea to have both in the same directory and to run the stylesheet
+   from that directory, as many XSLT implementations have ideosyncratic
+   handling of URLs: keep it simple.
+-->
+ 
+
+<!--
+  INVOCATION INFORMATION
+  
+  The following parameters are available
+  
+    phase           NMTOKEN | "#ALL" (default) Select the phase for validation
+    allow-foreign   "true" | "false" (default)   Pass non-Schematron elements to the generated stylesheet
+    sch.exslt.imports semi-colon delimited string of filenames for some EXSLT implementations  
+    message-newline "true" (default) | "false"   Generate an extra newline at the end of messages
+    optimize        "visit-no-attributes"     
+    debug	    "true" | "false" (default)  Debug mode lets compilation continue despite problems
+    attributes "true" | "false"  (Autodetecting) Use only when the schema has no attributes as the context nodes
+    only-child-elements "true" | "false" (Autodetecting) Use only when the schema has no comments
+    or PI  as the context nodes
+    
+  The following parameters can be specified as Schematron variables in diagnostics, assertions and so on.
+    fileNameParameter string	  
+    fileDirParameter string				
+    archiveNameParameter string	  In case of ZIP files
+    archiveDirParameter string	  In case of ZIP files	
+    output-encoding				  Use when outputting to XML
+ 
+ Experimental: USE AT YOUR OWN RISK   
+    visit-text "true" "false"   Also visist text nodes for context. WARNING: NON_STARDARD.
+    select-contents '' | 'key' | '//'   Select different implementation strategies
+ 
+ Conventions: Meta-stylesheets that override this may use the following parameters
+    generate-paths=true|false   generate the @location attribute with XPaths
+    diagnose= yes | no    Add the diagnostics to the assertion test in reports
+    terminate= yes | no   Terminate on the first failed assertion or successful report
+-->
+
+<!-- 
+  XSLT VERSION SUPPORT
+
+  XSLT 1:
+     A schema using the standard XSLT 1 query binding will have a /schema/@queryBinding='xslt' or 
+     nothing.
+
+       * Note: XT does not implement key() and will die if given it. 
+       * Add all formal parameters to default templates
+       * Fix missing apply-templates from process-ns and add params back
+
+  EXSLT:  Experimental support
+     A schema using the EXSLT query binding will have a /schema/@queryBinding='exslt'.
+     It is built on XSLT 1. After experience is gained, this binding is expected to be 
+     formalized as part of ISO Schematron, which currently reserves the "exslt" name for this purpose.
+
+     Some EXSLT engines have the extra functions built-in. For these, there is no need to
+     provide library locations. For engines that require the functions, either hard code
+     them in this script or provide them on the command-line argument.
+ 
+-->
+<!--
+   PROCESS INFORMATION
+   
+   This stylesheet compiles a Schematron schema (*.sch) into XSLT code (*.xsl). 
+   The generated XSLT code can then be run against an XML file (*.xml, etc) and
+   will produce validation results.
+   
+   The output of validation results is performed using named templates (process-*). 
+   These can be overridden easily by making a new XSLT stylesheet that imports this 
+   stylesheet but has its own version of the relevant process-* templates. Several
+   of these invoking stylesheets are available: "iso_svrl.xsl", for example generates
+   ISO Schematron Validation Report Language format results.
+   
+   In this version of the stylesheet, the ISO feature called "abstract patterns" is
+   implemented using macro processing: a prior XSLT stage to which converts uses
+   of abstract patterns into normal patterns. If you do not use abstract patterns,
+   it is not necessary to preprocess the schema.
+   
+   To summarize, a basic process flow for some commandline processor is like this:
+     XSLT -input=xxx.sch  -output=xxx.xsl  -stylesheet=iso_schematron_skeleton.xsl
+     XSLT -input=document.xml  -output=xxx-document.results  -stylesheet=xxx.xsl
+   
+   iso_svrl.xslt is an implementation of Schematron that can use this skeleton and
+   generate ISO SVRL reports. A process flow for some commandline processor would
+   be like this:
+     XSLT -input=xxx.sch  -output=xxx.xsl  -stylesheet=iso_svrl.xsl
+     XSLT -input=document.xml  -output=xxx-document.results  -stylesheet=xxx.xsl
+     
+   It is not impossible that ultimately a third stage, to handle macro-preprocessing
+   and inclusion, might be necessary. (The trade-off is in making this XSLT more
+   complex compared to making the outer process more complex.)
+             
+  This version has so far been tested with
+     Saxon 8
+     MSXML 4 (or 6?)   
+
+ Please note that if you are using SAXON and JAXP, then you should use 
+  System.setProperty("javax.xml.transform.TransformerFactory",
+                          "net.sf.saxon.TransformerFactoryImpl");
+ rather than 
+  System.setProperty("javax.xml.xpath.TransformerFactory",
+                           "net.sf.saxon.TransformerFactoryImpl");
+ which is does not work, at least for the versions of SAXON we tried.
+-->
+<!--
+ LEGAL INFORMATION
+ 
+ Copyright (c) 2000-2008 Rick Jelliffe and Academia Sinica Computing Center, Taiwan
+
+ This software is provided 'as-is', without any express or implied warranty. 
+ In no event will the authors be held liable for any damages arising from 
+ the use of this software.
+
+ Permission is granted to anyone to use this software for any purpose, 
+ including commercial applications, and to alter it and redistribute it freely,
+ subject to the following restrictions:
+
+ 1. The origin of this software must not be misrepresented; you must not claim
+ that you wrote the original software. If you use this software in a product, 
+ an acknowledgment in the product documentation would be appreciated but is 
+ not required.
+
+ 2. Altered source versions must be plainly marked as such, and must not be 
+ misrepresented as being the original software.
+
+ 3. This notice may not be removed or altered from any source distribution.
+-->
+<!--
+  NOTE: Compared to the iso_schematron_skeleton_for_saxon.xsl code, this version is currently missing
+     1) localization
+     2) properties
+     3) pattern/@documents
+
+  VERSION INFORMATION 
+   2009-02-25 RJ
+        * Fix up variable names so none are used twice in same template
+        * Tested on SAXON 9, Xalan 2.7.1. Partly tested MSXML.  
+   2008-09-19 RJ
+        * Add mode schematron-select-full-path and param full-path-notation 
+   
+   2008-08-11
+   		* TT report/@flag was missing
+   2008-08-06
+   		* TT Top-level lets need to be implemented using xsl:param not xsl:variable
+   		* TT xsl:param/@select must have XPath or not be specified
+   		
+    Version: 2008-07-28
+   		* KH schematron-get-full-path-3 has [index] even on top step
+   		* RJ fix schematron-get-full-path to have namespace predicate, I don't know why this was removed
+   		
+   Version: 2008-07-24
+   		* RJ clean out commented out namespace handling code
+   		* RJ add support for experimental non-standard attribute report/@action
+   		and assert/@action, and add parameter not in the published API (should
+   		not break anything, it is XSLT1)
+   		* RJ Remove remaining XSLT2 code for ease of reading
+   		
+   Version: 2008-07-14 minor update for inclusion experiments
+   	* RJ Clean up zero-length fragment test on include
+   	* RJ Add experimental support for include containers 
+   	* RJ For path generation, test for //iso:schema not just /iso:schema, for potential embedded Schematron support   
+   	* RJ Don't generate double error messages for old namespace elements
+   	* RJ Experimental iso:rule/iso:title just kept as comment (bigger request Uche Ogbuji)
+   	* RJ Remove spurious debug messages
+   	* RJ Fix bug that prevented including patterns in this (report Roger
+   	Costello)
+  
+   Version: 2007-10-17
+     From this version on I am forking XSLT2 support to a different version of the script.
+     This is due to the increasingly horrible state of the namespace handling code as well
+     as other inconsistencies between the major implementations of different versions.
+     The intent is that future versions of this will have XSLT2 isms removed and be simplified
+     to cope with only XSLT1 and EXLST. Note that though this version is called
+     iso_schematron_skeleton_for_xslt1, the various meta-stylesheets will continue to just call
+     iso_schematron_skeleton: it is up to you to rename the stylesheet to the one you want to
+     use.
+
+       * RJ fix FULL-PATH problem with attribute names
+
+
+   Version: 2007-07-19
+     Accept most changes in David Carlisle's fork, but continue as XSLT1 script: 
+    	http://dpcarlisle.blogspot.com/search/label/schematron
+    	* DPC Remove "optimize" parameter
+    	* DPC Add autodetecting optimize parameter attribute to skip checking attribute
+    	context
+    	* DPC Add autodetecting optimize parameter only-child-elements turn off checking for 
+    	comments and PIs
+    	* DPC (Experimental: NON_STANDARD DANGER!) Add param visit-text to viist text
+    	nodes too for context 
+    	* DPC Fix inclusion syntax to allow #
+    	* DPC Priorities count up from 1000 not down from 4000 to allow more rules
+        * RJ Add new template for titles of schemas, with existing behaviour.  
+        Override process-schema-title for custom processing of title
+    		
+    
+   Version: 2007-04-04
+   	* RJ debug mode param
+	* RJ alter mixed test to only test mixed branches, so the same document
+	could have old and new namespaces schemas in it, but each schema must
+	be distinct, just so as not to overconstrain things.
+   	* KH zero-length include/@href is fatal error, but allow debug mode
+	* SB add hint on SAXON and JAXP
+	* DC generate-full-path-1 generates XLST1 code by default
+   Version: 2007-03-05
+      	* AS Typo for EXSLT randome, improve comment
+      	* KH get-schematron-full-path-2 needs to apply to attributes too
+      	* DP document policy on extensions better
+      	* DC use copy-of not copy for foreign elements
+      	* DC add generate-path-2
+      	* DC don't try to apply templates to attribute axis on attribute nodes, to
+      	stop SAXON warning.
+      	* RJ improve reporting of typos 
+   
+   Version: 2007-02-08
+   		* KH Schematron fullpath implementation: @* handled twice and / missing
+   		* KH Change stylesheetbody from named template to mode to allow implementers more flexibility.
+   		  Move process-ns to outside the stylesheet body.
+   		* DP, FG, fix handling of xslt:key
+   		* FG no iso:title/@class
+   		* Experimental optimization 'visit-no-attributes'
+   		* KH Experimental added schematron-get-full-path-2 which gives prefixed version for humans
+ 		* DC Move stylesheet/@version generation to after namespace handling
+ 		* DC, FG EXSLT namespace handling code
+ 		* FG add ref and commented code from FG's page on namespaces
+ 		* Start adding normalize-space() to parameter code
+ 		* Add a space between diagnostics
+   		   		 
+   Version: 2007-01-22
+   	* DP change = ($start) to = $start and =($phase) to =$phase 
+   	to run under Saxon 8.8j
+	* FG better title section using ( @id | sch:title)[last()]
+	* Default query language binding is "xslt" not "xslt1"
+  
+   Version: 2007-01-19
+   		* Simplify message newline code
+   		* Remove termination and xpath appending to message options: 
+   		   factor out as  iso_schematron_terminator.xsl
+   		* Comment out XSLT2 namespace fix temporarily
+  
+   Version: 2007-01-18 (First beta candidate for comment)
+          * DC remove xml:space="preserve"
+          * FG improve comment on import statement
+          * DC improve comments on invocation section
+          * Add exploratory support for sch:schema[@queryBinding='xpath']
+             by allowing it and warning as lets are found
+          * Be strict about queryBinding spelling errors
+          * Extra comments on the different queryBindings
+          * KH Add option "message-paths" to generate XPath from output 
+          * KH Add option "terminate" to halt with an error after the first assertion
+          * KH refactor paths in schematron-full-path
+          * Improve (?) namespace handling: no dummy attributes for prefix "xsl" generated
+   
+   Version: 2007-01-15
+          * FG fix for calling templates
+          * Add formal parameters to default templates: may help XSLT 2
+          * Fix get-schematron-full-path
+          * Include skeleton1-6 is commented out by default
+
+   Version:2007-01-12 (Pre-beta release to Schematron-love-in maillist)
+           * Add many extra parameters to the process-* calls, so that almost
+           all the information in the schema can be provided to client programs.
+           Also, rearrange the parameters to fit in with the ISO schema, which
+           has "rich" and "linkable" attribute groups.
+           * Warn on diagnostics with no ID once only
+           * Improved path reporting, to handle for namespaces
+           * Add process-title dummy template for API
+           * Add command-line parameter allow-foreign (true|false) to suppress
+            warnings one foreign elements and pass them through to the generated
+            stylesheet
+           * remove legacy templates for the old ASCC namespace and no namespace, 
+              and use an import statement instead. Much cleaner now!
+           * patterns use @id not @name
+           * titles can contain sub-elements
+           * start change sch:rule to allow attributes, PIs and comments 
+           * the default process-* for inline elements add a leading and trailing 
+             space, to reduce the chance of concatenation.
+           * add comments to make the generated code clearer
+           
+   Version:2006-11-07 (ISO: first release private to schematron-love-in maillist for review)
+           * Duplicate pattern templates, for handling ISO namespace
+           * Add priority onto default and paragraph templates
+           * Add namespace checks
+           * Handle key in xsl namespace not iso
+           * Add include
+           * Improve namespace handling
+           * Preliminary XSLT2 and EXSLT support
+	       * Refactor iso:schema for clarity
+
+    Version: 2003-05-26 
+    	    * Fix bug with key 
+    Version: 2003-04-16
+    	   * handle 1.6 let expressions
+    	   * make key use XSLT names, and allow anywhere
+    Version: 2001-06-13
+           * same skeleton now supports namespace or no namespace
+           * parameters to handlers updated for all 1.5 attributes 
+           * diagnostic hints supported: command-line option diagnose=yes|no
+           * phases supported: command-line option phase=#ALL|...
+           * abstract rules
+           * compile-time error messages  
+	   * add utility routine generate-id-from-path
+          
+    Contributors: Rick Jelliffe (original), Oliver Becker (architecture, XSLT2), 
+             Miloslav Nic (diagnostic, phase, options), Ludwig Svenonius (abstract)
+             Uche Ogbuji (misc. bug fixes), Jim Ancona (SAXON workaround),
+	 	     Francis Norton (generate-id-from-path), Robert Leftwich, Bryan Rasmussen,
+             Dave Pawson (include, fallback), Florent Georges (namespaces, exslt, attribute
+             context), Benoit Maisonny (attribute context), John Dumps (process-message newline),
+             Cliff Stanford (diagnostics and other newlines)
+
+    
+    KNOWN TYPICAL LIMITATIONS:
+      * Don't use <sch:ns prefix="xsl" .../> with a namespace other than the standard
+      XSLT one. This would be a bizarre thing to do anyway. 
+      * Don't use other prefixes for the XSLT namespace either; some implementations will
+      not handle it correctly.
+     
+     EXTENSIONS:
+      ISO Schematron is designed as a framework with some standard query language
+      bindings. If you need to support other features, please do so safely by making
+      up your own @queryLanguage name: this makes it clear that your schema requires
+      special features. For example, default ISO Schematron does not support user
+      defined functions; so if you want to use the user defined function feature
+      in XSLT, you need to have a schema with some queryBinding attribute name like
+      "XSLT-with-my-functions" or whatever.
+-->
+
+
+
+
+<xsl:stylesheet version="1.0" 
+	xmlns:xsl="http://www.w3.org/1999/XSL/Transform" 
+	xmlns:axsl="http://www.w3.org/1999/XSL/TransformAlias" 
+	xmlns:sch="http://www.ascc.net/xml/schematron"
+    xmlns:iso="http://purl.oclc.org/dsdl/schematron" 
+    xmlns:exsl="http://exslt.org/common"
+    xmlns:msxsl="urn:schemas-microsoft-com:xslt"
+    extension-element-prefixes="exsl  msxsl"
+	 >
+<!-- This program implements ISO Schematron, except for abstract patterns which require a preprocess. -->
+  
+
+<xsl:namespace-alias stylesheet-prefix="axsl" result-prefix="xsl"/>
+
+
+<!-- Category: top-level-element -->
+<xsl:output method="xml" omit-xml-declaration="no" standalone="yes"  indent="yes"/>
+
+
+<xsl:param name="phase">
+  <xsl:choose>
+    <xsl:when test="//sch:schema/@defaultPhase">
+      <xsl:value-of select="//sch:schema/@defaultPhase"/>
+    </xsl:when>   
+    <xsl:when test="//iso:schema/@defaultPhase">
+      <xsl:value-of select="//iso:schema/@defaultPhase"/>
+    </xsl:when>
+    <xsl:otherwise>#ALL</xsl:otherwise>
+  </xsl:choose>
+</xsl:param>
+
+<xsl:param name="allow-foreign">false</xsl:param>
+
+<xsl:param name="message-newline">true</xsl:param>
+
+<!-- DPC set to true if contexts should be checked on attribute nodes
+         defaults to true if there is any possibility that a context could match an attribute,
+         err on the side if caution, a context of *[.='@'] would cause this param to defualt to true
+         even though @ is in a string
+-->
+<xsl:param name="attributes">
+  <xsl:choose>
+    <xsl:when test="//iso:rule[contains(@context,'@') or contains(@context,'attribute')]">true</xsl:when>
+    <xsl:otherwise>false</xsl:otherwise>
+  </xsl:choose>
+</xsl:param>
+
+<!-- DPC set to true if contexts should be checked on just elements in the child axis
+         defaults to true if there is any possibility that a context could match an comment or PI
+         err on the side if caution, a context of *[.='('] would cause this param to defualt to true
+         even though ( is in a string, but node() comment() and processing-instruction()  all have a (
+-->
+<xsl:param name="only-child-elements">
+  <xsl:choose>
+    <xsl:when test="//iso:rule[contains(@context,'(')]">true</xsl:when>
+    <xsl:otherwise>false</xsl:otherwise>
+  </xsl:choose>
+</xsl:param>
+
+<!-- DPC set to true if contexts should be checked on text nodes nodes (if only-child-elements is false)
+         THIS IS NON CONFORMANT BEHAVIOUR JUST FOR DISCUSSION OF A POSSIBLE CHANGE TO THE
+         SPECIFICATION. THIS PARAM SHOULD GO IF THE FINAL DECISION IS THAT THE SPEC DOES NOT CHANGE.
+	 Always defaults to false
+-->
+<xsl:param name="visit-text" select="'false'"/>
+
+<!-- DPC
+  When selecting contexts the specified behaviour is
+    @*|node()[not(self::text())]
+    The automatic settings may use
+      node()[not(self::text())]
+      @*|*
+      *
+  instead for schema for which they are equivalent.
+  If the params are set explictly the above may be used, and also either if
+      @*
+      @*|node()
+   in all cases the result may not be equivalent, for example if you specify no attributes and the schema 
+   does have attribute contexts they will be silently ignored.
+
+  after testing it turns out that
+  node()[not(self::text())] is slower in saxon than *|comment()|processing-instruction() 
+  which I find a bit surprising but anyway I'll use the longr faster version.
+-->
+<xsl:variable name="context-xpath">
+  <xsl:if test="$attributes='true'">@*|</xsl:if>
+  <xsl:choose>
+    <xsl:when test="$only-child-elements='true'">*</xsl:when>
+    <xsl:when test="$visit-text='true'">node()</xsl:when>
+    <xsl:otherwise>*|comment()|processing-instruction()</xsl:otherwise>
+  </xsl:choose>
+</xsl:variable>
+
+<!-- DPC if this is set to 
+    '' use recursive templates to iterate over document tree,
+    'key' select  all contexts with a key rather than walking the tree explictly in each mode
+    '//' select all contexts with // a key rather than walking the tree explictly in each mode (XSLT2 only)
+-->
+<xsl:param name="select-contexts" select="''"/>
+
+
+<xsl:param name="output-encoding"/>
+<!-- e.g. saxon file.xml file.xsl "sch.exslt.imports=.../string.xsl;.../math.xsl" -->
+<xsl:param name="sch.exslt.imports"/>
+
+<!-- Set the language code for messages -->
+<xsl:param name="langCode">default</xsl:param>
+
+<xsl:param name="debug">false</xsl:param>
+
+
+<!-- Set the default for schematron-select-full-path, i.e. the notation for svrl's @location-->
+<xsl:param name="full-path-notation">1</xsl:param>
+
+<!-- Simple namespace check -->
+<xsl:template match="/">
+    <xsl:if  test="//sch:*[ancestor::iso:* or descendant::iso:*]">
+	<xsl:message>Schema error: Schematron elements in old and new namespaces found</xsl:message>
+	<xsl:if test=" $debug = 'false' " />
+    </xsl:if>
+
+    <xsl:apply-templates />
+</xsl:template>
+
+
+<!-- ============================================================== -->
+<!-- ISO SCHEMATRON SCHEMA ELEMENT  -->
+<!-- Not handled: Abstract patterns. A pre-processor is assumed. -->
+<!-- ============================================================== -->
+
+<!-- SCHEMA -->
+<!-- Default uses XSLT 1 -->
+<xsl:template match="iso:schema[not(@queryBinding) or @queryBinding='xslt' 
+     or @queryBinding='xslt1' or @queryBinding='XSLT' or @queryBinding='XSLT1'
+     or @queryBinding='xpath']">
+     <xsl:if test="
+	     @queryBinding='xslt1' or @queryBinding='XSLT' or @queryBinding='XSLT1'">
+	     <xsl:message>Schema error: in the queryBinding attribute, use 'xslt'</xsl:message>
+	</xsl:if>
+	<axsl:stylesheet>
+	    <xsl:apply-templates select="iso:ns"/>
+	    <!-- Handle the namespaces before the version attribute: reported to help SAXON -->
+	    <xsl:attribute name="version">1.0</xsl:attribute>
+	    
+		<xsl:apply-templates select="." mode="stylesheetbody"/>
+		<!-- was xsl:call-template name="stylesheetbody"/ -->
+	</axsl:stylesheet>
+</xsl:template>
+
+<!-- Using EXSLT with all modeles (except function module: not applicable) -->
+<xsl:template match="iso:schema[@queryBinding='exslt']" priority="10">
+    <xsl:comment>This XSLT was automatically generated from a Schematron schema.</xsl:comment>
+	<axsl:stylesheet
+ 	  	xmlns:date="http://exslt.org/dates-and-times"
+ 	  	xmlns:dyn="http://exslt.org/dynamic"
+		xmlns:exsl="http://exslt.org/common"
+		xmlns:math="http://exslt.org/math"
+   		xmlns:random="http://exslt.org/random"
+  		xmlns:regexp="http://exslt.org/regular-expressions"
+   		xmlns:set="http://exslt.org/sets"
+   		xmlns:str="http://exslt.org/strings"
+   		extension-element-prefixes="date dyn exsl math random regexp set str" >
+	
+        <xsl:apply-templates select="iso:ns"/>
+	    <!-- Handle the namespaces before the version attribute: reported to help SAXON -->
+	    <xsl:attribute name="version">1.0</xsl:attribute>
+	    
+	    <xsl:apply-templates select="." mode="stylesheetbody"/>
+		<!-- was xsl:call-template name="stylesheetbody"/ -->
+	</axsl:stylesheet>
+</xsl:template>
+
+
+<!-- Default uses XSLT 1 -->
+<xsl:template match="iso:schema" priority="-1">
+	<xsl:message terminate="yes" >Fail: This implementation of ISO Schematron does not work with 
+	schemas using the "<xsl:value-of select="@queryBinding"/>" query language.</xsl:message>        
+</xsl:template>
+
+<xsl:template match="*" mode="stylesheetbody">
+	<!--xsl:template name="stylesheetbody"-->
+    <xsl:comment>Implementers: please note that overriding process-prolog or process-root is 
+    the preferred method for meta-stylesheets to use where possible. </xsl:comment><xsl:text>&#10;</xsl:text>
+
+   <!-- These parameters may contain strings with the name and directory of the file being
+   validated. For convenience, if the caller only has the information in a single string,
+   that string could be put in fileDirParameter. The archives parameters are available
+   for ZIP archives.
+	-->
+
+	<axsl:param name="archiveDirParameter" />
+	<axsl:param name="archiveNameParameter" />
+	<axsl:param name="fileNameParameter" />
+	<axsl:param name="fileDirParameter" />
+
+    <xsl:call-template name="iso:exslt.add.imports" />
+    <xsl:text>&#10;&#10;</xsl:text><xsl:comment>PHASES</xsl:comment><xsl:text>&#10;</xsl:text>
+	<xsl:call-template name="handle-phase"/>
+    <xsl:text>&#10;&#10;</xsl:text><xsl:comment>PROLOG</xsl:comment><xsl:text>&#10;</xsl:text>
+	<xsl:call-template name="process-prolog"/>
+    <xsl:text>&#10;&#10;</xsl:text><xsl:comment>KEYS</xsl:comment><xsl:text>&#10;</xsl:text>
+	<xsl:apply-templates mode="do-keys"   select="xsl:key  "/>
+    <xsl:text>&#10;&#10;</xsl:text><xsl:comment>DEFAULT RULES</xsl:comment><xsl:text>&#10;</xsl:text>
+    <xsl:call-template name="generate-default-rules" />
+    <xsl:text>&#10;&#10;</xsl:text><xsl:comment>SCHEMA METADATA</xsl:comment><xsl:text>&#10;</xsl:text>
+    <xsl:call-template name="handle-root"/>
+    <xsl:text>&#10;&#10;</xsl:text><xsl:comment>SCHEMATRON PATTERNS</xsl:comment><xsl:text>&#10;</xsl:text>
+ 
+	<xsl:apply-templates select="*[not(self::iso:ns)] " />
+</xsl:template>
+ 
+    <xsl:template name="iso:exslt.add.imports">
+      <xsl:param name="imports" select="$sch.exslt.imports"/>
+      <xsl:choose>
+        <xsl:when test="contains($imports, ';')">
+          <axsl:import href="{ substring-before($imports, ';') }"/>
+          <xsl:call-template name="iso:exslt.add.imports">
+            <xsl:with-param name="imports"  select="substring-after($imports, ';')"/>
+          </xsl:call-template>
+        </xsl:when>
+        <xsl:when test="$imports">
+          <axsl:import href="{ $imports }"/>
+        </xsl:when>
+      </xsl:choose>
+    </xsl:template>
+
+<xsl:template name="handle-phase" >
+	<xsl:if test="not(normalize-space( $phase ) = '#ALL')">
+	  <xsl:if test="not(iso:phase[@id = normalize-space( $phase )])">
+		  <xsl:message>Phase Error: no phase with name <xsl:value-of select="normalize-space( $phase )"
+		  /> has been defined.</xsl:message>
+	  </xsl:if>
+     </xsl:if>
+</xsl:template>
+
+<xsl:template name="generate-default-rules">
+		<xsl:text>&#10;&#10;</xsl:text>
+		<xsl:comment>MODE: SCHEMATRON-SELECT-FULL-PATH</xsl:comment><xsl:text>&#10;</xsl:text>
+		<xsl:comment>This mode can be used to generate an ugly though full XPath for locators</xsl:comment><xsl:text>&#10;</xsl:text>
+   		<axsl:template match="*" mode="schematron-select-full-path">
+   			<xsl:choose>
+   				<xsl:when test=" $full-path-notation = '1' ">
+   					<!-- Use for computers, but rather unreadable for humans -->
+					<axsl:apply-templates select="." mode="schematron-get-full-path"/>
+				</xsl:when>
+   				<xsl:when test=" $full-path-notation = '2' ">
+   					<!-- Use for humans, but no good for paths unless namespaces are known out-of-band -->
+					<axsl:apply-templates select="." mode="schematron-get-full-path-2"/>
+				</xsl:when>
+   				<xsl:when test=" $full-path-notation = '3' "> 
+   					<!-- Obsolescent. Use for humans, but no good for paths unless namespaces are known out-of-band -->
+					<axsl:apply-templates select="." mode="schematron-get-full-path-3"/>
+				</xsl:when>
+
+                   <xsl:otherwise >
+                       <!-- Use for computers, but rather unreadable for humans -->
+                    <axsl:apply-templates select="." mode="schematron-get-full-path"/>
+                </xsl:otherwise>
+			</xsl:choose>
+		</axsl:template>
+	
+
+		<xsl:text>&#10;&#10;</xsl:text>
+		<xsl:comment>MODE: SCHEMATRON-FULL-PATH</xsl:comment><xsl:text>&#10;</xsl:text>
+		<xsl:comment>This mode can be used to generate an ugly though full XPath for locators</xsl:comment><xsl:text>&#10;</xsl:text>
+   		<axsl:template match="*" mode="schematron-get-full-path">
+			<axsl:apply-templates select="parent::*" mode="schematron-get-full-path"/>
+			
+			<!-- XSLT1 syntax -->
+
+			<axsl:text>/</axsl:text>
+			<axsl:choose>
+			<axsl:when test="namespace-uri()=''">
+			<axsl:value-of select="name()"/>
+			<axsl:variable name="p_1" select="1+
+			count(preceding-sibling::*[name()=name(current())])" />
+		<axsl:if test="$p_1&gt;1 or following-sibling::*[name()=name(current())]">
+		  <xsl:text/>[<axsl:value-of select="$p_1"/>]<xsl:text/>
+		</axsl:if>
+		</axsl:when>
+		<axsl:otherwise>
+		<axsl:text>*[local-name()='</axsl:text>
+		<axsl:value-of select="local-name()"/><axsl:text>' and namespace-uri()='</axsl:text>
+		<axsl:value-of select="namespace-uri()"/>
+		<axsl:text>']</axsl:text>
+		<axsl:variable name="p_2" select="1+
+		count(preceding-sibling::*[local-name()=local-name(current())])" />
+		<axsl:if test="$p_2&gt;1 or following-sibling::*[local-name()=local-name(current())]">
+		  <xsl:text/>[<axsl:value-of select="$p_2"/>]<xsl:text/>
+		</axsl:if>
+		</axsl:otherwise>
+		</axsl:choose> 
+       	 	</axsl:template>
+       	 	
+       	 	
+		<axsl:template match="@*" mode="schematron-get-full-path">
+		
+			<!-- XSLT1 syntax -->
+		<axsl:text>/</axsl:text>
+		<axsl:choose>
+		<axsl:when test="namespace-uri()=''">@<axsl:value-of
+		select="name()"/></axsl:when>
+		<axsl:otherwise>
+		<axsl:text>@*[local-name()='</axsl:text>
+		<axsl:value-of select="local-name()"/>
+		<axsl:text>' and namespace-uri()='</axsl:text>
+		<axsl:value-of select="namespace-uri()"/>
+		<axsl:text>']</axsl:text>
+		</axsl:otherwise>
+		</axsl:choose>   
+
+		</axsl:template>
+	
+	
+	<xsl:text>&#10;&#10;</xsl:text>
+	
+	<xsl:comment>MODE: SCHEMATRON-FULL-PATH-2</xsl:comment>
+	<xsl:text>&#10;</xsl:text>
+	<xsl:comment>This mode can be used to generate prefixed XPath for humans</xsl:comment>
+	<xsl:text>&#10;</xsl:text>
+	<!--simplify the error messages by using the namespace prefixes of the
+     instance rather than the generic namespace-uri-styled qualification-->
+	<axsl:template match="node() | @*" mode="schematron-get-full-path-2">
+	<!--report the element hierarchy-->
+		<axsl:for-each select="ancestor-or-self::*">
+			<axsl:text>/</axsl:text>
+			<axsl:value-of select="name(.)"/>
+			<axsl:if test="preceding-sibling::*[name(.)=name(current())]">
+				<axsl:text>[</axsl:text>
+				<axsl:value-of
+					select="count(preceding-sibling::*[name(.)=name(current())])+1"/>
+				<axsl:text>]</axsl:text>
+			</axsl:if>
+		</axsl:for-each>
+		<!--report the attribute-->
+		<axsl:if test="not(self::*)">
+			<axsl:text/>/@<axsl:value-of select="name(.)"/>
+		</axsl:if>
+	</axsl:template>
+
+		<xsl:text>&#10;&#10;</xsl:text>
+		<xsl:comment>MODE: GENERATE-ID-FROM-PATH </xsl:comment><xsl:text>&#10;</xsl:text>
+		<!-- repeatable-id maker derived from Francis Norton's. -->
+		<!-- use this if you need generate ids in separate passes,
+		     because generate-id() is not guaranteed to produce the same
+		     results each time. These ids are not XML names but closer to paths. -->
+		<axsl:template match="/" mode="generate-id-from-path"/>
+		<axsl:template match="text()" mode="generate-id-from-path">
+			<axsl:apply-templates select="parent::*" mode="generate-id-from-path"/>
+			<axsl:value-of select="concat('.text-', 1+count(preceding-sibling::text()), '-')"/>
+		</axsl:template>
+		<axsl:template match="comment()" mode="generate-id-from-path">
+			<axsl:apply-templates select="parent::*" mode="generate-id-from-path"/>
+			<axsl:value-of select="concat('.comment-', 1+count(preceding-sibling::comment()), '-')"/>
+		</axsl:template>
+		<axsl:template match="processing-instruction()" mode="generate-id-from-path">
+			<axsl:apply-templates select="parent::*" mode="generate-id-from-path"/>
+			<axsl:value-of 
+			select="concat('.processing-instruction-', 1+count(preceding-sibling::processing-instruction()), '-')"/>
+		</axsl:template>
+		<axsl:template match="@*" mode="generate-id-from-path">
+			<axsl:apply-templates select="parent::*" mode="generate-id-from-path"/>
+			<axsl:value-of select="concat('.@', name())"/>
+		</axsl:template>
+		<axsl:template match="*" mode="generate-id-from-path" priority="-0.5">
+			<axsl:apply-templates select="parent::*" mode="generate-id-from-path"/>
+			<axsl:text>.</axsl:text>
+<!--
+			<axsl:choose>
+				<axsl:when test="count(. | ../namespace::*) = count(../namespace::*)">
+					<axsl:value-of select="concat('.namespace::-',1+count(namespace::*),'-')"/>
+				</axsl:when>
+				<axsl:otherwise>
+-->
+				<axsl:value-of 
+				select="concat('.',name(),'-',1+count(preceding-sibling::*[name()=name(current())]),'-')"/>
+<!--
+				</axsl:otherwise>
+			</axsl:choose>
+-->
+		</axsl:template>
+		
+		
+	<xsl:comment>MODE: SCHEMATRON-FULL-PATH-3</xsl:comment>
+	
+	<xsl:text>&#10;</xsl:text>
+	<xsl:comment>This mode can be used to generate prefixed XPath for humans 
+	(Top-level element has index)</xsl:comment>
+	<xsl:text>&#10;</xsl:text>
+	<!--simplify the error messages by using the namespace prefixes of the
+     instance rather than the generic namespace-uri-styled qualification-->
+	<axsl:template match="node() | @*" mode="schematron-get-full-path-3">
+	<!--report the element hierarchy-->
+		<axsl:for-each select="ancestor-or-self::*">
+			<axsl:text>/</axsl:text>
+			<axsl:value-of select="name(.)"/>
+			<axsl:if test="parent::*">
+				<axsl:text>[</axsl:text>
+				<axsl:value-of
+					select="count(preceding-sibling::*[name(.)=name(current())])+1"/>
+				<axsl:text>]</axsl:text>
+			</axsl:if>
+		</axsl:for-each>
+		<!--report the attribute-->
+		<axsl:if test="not(self::*)">
+			<axsl:text/>/@<axsl:value-of select="name(.)"/>
+		</axsl:if>
+	</axsl:template>
+
+		<xsl:text>&#10;&#10;</xsl:text>
+		<xsl:comment>MODE: GENERATE-ID-2 </xsl:comment><xsl:text>&#10;</xsl:text>
+		<!-- repeatable-id maker from David Carlisle. -->
+		<!-- use this if you need generate IDs in separate passes,
+		     because generate-id() is not guaranteed to produce the same
+		     results each time. These IDs are well-formed XML NMTOKENS -->
+	<axsl:template match="/" mode="generate-id-2">U</axsl:template>
+
+	<axsl:template match="*" mode="generate-id-2" priority="2">
+		<axsl:text>U</axsl:text>
+		<axsl:number level="multiple" count="*"/>
+	</axsl:template>
+
+	<axsl:template match="node()" mode="generate-id-2">
+		<axsl:text>U.</axsl:text>
+		<axsl:number level="multiple" count="*"/>
+		<axsl:text>n</axsl:text>
+		<axsl:number count="node()"/>
+	</axsl:template>
+
+	<axsl:template match="@*" mode="generate-id-2">
+		<axsl:text>U.</axsl:text>
+		<axsl:number level="multiple" count="*"/>
+		<axsl:text>_</axsl:text>
+		<axsl:value-of select="string-length(local-name(.))"/>
+		<axsl:text>_</axsl:text>
+		<axsl:value-of select="translate(name(),':','.')"/>
+	</axsl:template> 
+
+
+		<xsl:comment>Strip characters</xsl:comment>
+		<axsl:template match="text()" priority="-1" />
+			
+  </xsl:template>
+
+ <xsl:template name="handle-root">
+		<!-- Process the top-level element -->
+		<axsl:template match="/">
+			<xsl:call-template name="process-root">
+				<xsl:with-param 	
+				name="title" select="(@id | iso:title)[last()]"/>
+				<xsl:with-param name="version" select="'iso'" />
+				<xsl:with-param name="schemaVersion" select="@schemaVersion" />
+				<xsl:with-param name="queryBinding" select="@queryBinding" />
+				<xsl:with-param name="contents">
+					<xsl:apply-templates mode="do-all-patterns"/>
+				</xsl:with-param>
+				
+				<!-- "Rich" properties -->
+				<xsl:with-param name="fpi" select="@fpi"/>
+				<xsl:with-param name="icon" select="@icon"/>
+				<xsl:with-param name="id" select="@id"/>
+				<xsl:with-param name="lang" select="@xml:lang"/>
+				<xsl:with-param name="see" select="@see" />
+				<xsl:with-param name="space" select="@xml:space" />
+				
+				
+				<!-- Non-standard extensions not part of the API yet -->
+				<xsl:with-param name="action" select="@action" />
+			</xsl:call-template>
+		</axsl:template>
+ 
+      
+</xsl:template>
+
+<!-- ============================================================== -->
+<!-- ISO SCHEMATRON ELEMENTS -->
+<!-- ============================================================== -->
+
+	<!-- ISO ACTIVE -->
+	<xsl:template match="iso:active">
+                <xsl:if test="not(@pattern)">
+                    <xsl:message>Markup Error: no pattern attribute in &lt;active></xsl:message>
+                </xsl:if>
+
+                <xsl:if test="not(../../iso:pattern[@id = current()/@pattern])
+                and not(../../iso:include)">
+                           <xsl:message>Reference Error: the pattern  "<xsl:value-of select="@pattern"
+						   />" has been activated but is not declared</xsl:message>
+                </xsl:if>
+        </xsl:template>
+
+	<!-- ISO ASSERT and REPORT -->
+	<xsl:template match="iso:assert">
+  
+                <xsl:if test="not(@test)">
+                    <xsl:message>Markup Error: no test attribute in &lt;assert</xsl:message>
+                </xsl:if>
+        <xsl:text>&#10;&#10;		</xsl:text>
+		<xsl:comment>ASSERT <xsl:value-of select="@role" /> </xsl:comment><xsl:text>&#10;</xsl:text>      
+	
+		<axsl:choose>
+			<axsl:when test="{@test}"/>
+			<axsl:otherwise>
+				<xsl:call-template name="process-assert">
+					<xsl:with-param name="test" select="normalize-space(@test)" />
+					<xsl:with-param name="diagnostics" select="@diagnostics"/>
+					<xsl:with-param name="flag" select="@flag"/>
+					
+					<!-- "Rich" properties -->
+					<xsl:with-param name="fpi" select="@fpi"/>
+					<xsl:with-param name="icon" select="@icon"/>
+					<xsl:with-param name="id" select="@id"/>
+					<xsl:with-param name="lang" select="@xml:lang"/>
+					<xsl:with-param name="see" select="@see" />
+					<xsl:with-param name="space" select="@xml:space" />
+					
+					<!-- "Linking" properties -->
+					<xsl:with-param name="role" select="@role" />
+					<xsl:with-param name="subject" select="@subject" />
+				</xsl:call-template>
+ 			
+			</axsl:otherwise>
+		</axsl:choose>
+	</xsl:template>
+	<xsl:template match="iso:report">
+		 
+                <xsl:if test="not(@test)">
+                    <xsl:message>Markup Error: no test attribute in &lt;report></xsl:message>
+                </xsl:if>
+                
+        <xsl:text>&#10;&#10;		</xsl:text>
+		<xsl:comment>REPORT <xsl:value-of select="@role" /> </xsl:comment><xsl:text>&#10;</xsl:text>      
+	
+		<axsl:if test="{@test}">
+		
+			<xsl:call-template name="process-report">
+				<xsl:with-param name="test" select="normalize-space(@test)" />
+				<xsl:with-param name="diagnostics" select="@diagnostics"/>
+					<xsl:with-param name="flag" select="@flag"/>
+					
+					<!-- "Rich" properties -->
+					<xsl:with-param name="fpi" select="@fpi"/>
+					<xsl:with-param name="icon" select="@icon"/>
+					<xsl:with-param name="id" select="@id"/>
+					<xsl:with-param name="lang" select="@xml:lang"/>
+					<xsl:with-param name="see" select="@see" />
+					<xsl:with-param name="space" select="@xml:space" />
+					
+					<!-- "Linking" properties -->
+					<xsl:with-param name="role" select="@role" />
+					<xsl:with-param name="subject" select="@subject" />
+			</xsl:call-template>
+				
+		</axsl:if>
+	</xsl:template>
+
+
+	<!-- ISO DIAGNOSTIC -->
+	<!-- We use a mode here to maintain backwards compatability, instead of adding it
+	     to the other mode.
+	-->
+	<xsl:template match="iso:diagnostic" mode="check-diagnostics">
+              <xsl:if test="not(@id)">
+                    <xsl:message>Markup Error: no id attribute in &lt;diagnostic></xsl:message>
+               </xsl:if>
+    </xsl:template>
+    
+    <xsl:template match="iso:diagnostic"  >
+                <xsl:call-template name="process-diagnostic">
+                
+					<!-- "Rich" properties -->
+					<xsl:with-param name="fpi" select="@fpi"/>
+					<xsl:with-param name="icon" select="@icon"/>
+					<xsl:with-param name="id" select="@id"/>
+					<xsl:with-param name="lang" select="@xml:lang"/>
+					<xsl:with-param name="see" select="@see" />
+					<xsl:with-param name="space" select="@xml:space" />
+               </xsl:call-template>
+        </xsl:template>
+
+	<!-- ISO DIAGNOSTICS -->
+	<xsl:template match="iso:diagnostics" >
+		<xsl:apply-templates mode="check-diagnostics" select="*" />
+	</xsl:template>
+
+	<!-- ISO DIR -->
+	<xsl:template match="iso:dir"  mode="text" >
+		<xsl:call-template name="process-dir">
+			<xsl:with-param name="value" select="@value"/>
+		</xsl:call-template>
+	</xsl:template>
+
+	<!-- ISO EMPH -->
+	<xsl:template match="iso:emph"  mode="text">
+	 
+		<xsl:call-template name="process-emph"/> 
+
+	</xsl:template>
+
+	<!-- ISO EXTENDS -->
+	<xsl:template match="iso:extends">
+		<xsl:if test="not(@rule)">
+                   <xsl:message>Markup Error: no rule attribute in &lt;extends></xsl:message>
+                </xsl:if>
+     		<xsl:if test="not(//iso:rule[@abstract='true'][@id= current()/@rule] )">
+                    <xsl:message>Reference Error: the abstract rule  "<xsl:value-of select="@rule"
+					/>" has been referenced but is not declared</xsl:message>
+                </xsl:if>
+	        <xsl:call-template name="IamEmpty" />
+
+  		<xsl:if test="//iso:rule[@id=current()/@rule]">
+    			<xsl:apply-templates select="//iso:rule[@id=current()/@rule]"
+				mode="extends"/>
+  		</xsl:if>
+
+	</xsl:template>
+
+	<!-- KEY: ISO has no KEY -->
+	<!-- NOTE: 
+	     Key has had a checkered history. Schematron 1.0 allowed it in certain places, but
+	     users came up with a different location, which has now been adopted. 
+	     
+	     XT, the early XSLT processor, did not implement key and died when it was present. 
+	     So there are some versions of the Schematron skeleton for XT that strip out all
+	     key elements.
+	     
+	     Xalan (e.g. Xalan4C 1.0 and a Xalan4J) also had a funny. A fix involved making 
+	     a top-level parameter called $hiddenKey and then using that instead of matching
+	     "key". This has been removed.
+	-->
+	<xsl:template  match="xsl:key" mode="do-keys" >
+	     <xsl:if test="not(@name)">
+              <xsl:message>Markup Error: no name attribute in &lt;key></xsl:message>
+         </xsl:if>
+                <xsl:if test="not(@path) and not(@use)">
+                    <xsl:message>Markup Error: no path or use attribute in &lt;key></xsl:message>
+                </xsl:if>         
+	     <xsl:choose>
+	     	<xsl:when test="parent::iso:rule ">
+	        <xsl:call-template name="IamEmpty" />
+	       <xsl:choose>
+	       	<xsl:when test="@path">
+				<axsl:key match="{../@context}" name="{@name}" use="{@path}"/>
+			</xsl:when>
+			<xsl:otherwise>
+							<axsl:key match="{../@context}" name="{@name}" use="{@use}"/>
+			</xsl:otherwise>
+			</xsl:choose>	
+		</xsl:when>
+		<xsl:otherwise>
+                <xsl:if test="not(@match) ">
+                    <xsl:message>Markup Error: no path or use attribute in &lt;key></xsl:message>
+                </xsl:if>   		
+			<axsl:key>
+      			<xsl:copy-of select="@*"/>
+    		</axsl:key>	
+		</xsl:otherwise>
+		</xsl:choose>
+	</xsl:template>
+
+	<xsl:template match="xsl:key "  /><!-- swallow -->
+
+	<xsl:template match="iso:key "  >
+		<xsl:message>Schema error: The key element is not in the ISO Schematron namespace. Use the XSLT namespace.</xsl:message>
+    </xsl:template>
+
+   <!-- ISO INCLUDE -->
+   <!-- This is only a fallback. Include really needs to have been done before this as a separate pass.-->
+
+   <xsl:template match="iso:include[not(normalize-space(@href))]"
+	   priority="1">
+	<xsl:if test=" $debug = 'false' ">
+		<xsl:message terminate="yes">Schema error: Empty href= attribute for include directive.</xsl:message>
+	</xsl:if>
+
+   </xsl:template>
+
+   <!-- Extend the URI syntax to allow # refererences -->
+   <!-- Add experimental support for simple containers like  /xxx:xxx/iso:pattern to allow better includes -->
+   <xsl:template match="iso:include">
+       <xsl:variable name="document-uri" select="substring-before(concat(@href,'#'), '#')"/>
+       <xsl:variable name="fragment-id" select="substring-after(@href, '#')"/>
+       
+       <xsl:choose> 
+          
+          <xsl:when test="string-length( $document-uri ) = 0 and string-length( $fragment-id ) = 0" >
+          	<xsl:message>Error: Impossible URL in Schematron include</xsl:message>
+          </xsl:when> 
+          
+          <xsl:when test="string-length( $fragment-id ) &gt; 0">
+              <xsl:variable name="theDocument_1" select="document( $document-uri,/ )" />
+              <xsl:variable name="theFragment_1" select="$theDocument_1//iso:*[@id= $fragment-id ]" />
+              <xsl:if test=" $theFragment_1/self::iso:schema ">
+                 <xsl:message>Schema error: Use include to include fragments, not a whole schema</xsl:message>
+              </xsl:if>
+              <xsl:apply-templates select=" $theFragment_1"/>
+		   </xsl:when>
+		  
+		   <xsl:otherwise>
+              <xsl:variable name="theDocument_2" select="document( $document-uri,/ )" />
+              <xsl:variable name="theFragment_2" select="$theDocument_2/iso:*" />
+              <xsl:variable name="theContainedFragments" select="$theDocument_2/*/iso:*" />
+              <xsl:if test=" $theFragment_2/self::iso:schema or $theContainedFragments/self::iso:schema">
+                 <xsl:message>Schema error: Use include to include fragments, not a whole schema</xsl:message>
+              </xsl:if>
+       		<xsl:apply-templates select="$theFragment_2 | $theContainedFragments "/>
+       	   </xsl:otherwise>
+       </xsl:choose>
+   </xsl:template>
+
+   <!-- This is to handle the particular case of including patterns -->  
+   <xsl:template match="iso:include" mode="do-all-patterns">
+       <xsl:variable name="document-uri" select="substring-before(concat(@href,'#'), '#')"/>
+       <xsl:variable name="fragment-id" select="substring-after(@href, '#')"/>
+ 
+       <xsl:choose> 
+          
+          <xsl:when test="string-length( $document-uri ) = 0 and string-length( $fragment-id ) = 0" >
+          	<xsl:message>Error: Impossible URL in Schematron include</xsl:message>
+          </xsl:when> 
+          
+          <xsl:when test="string-length( $fragment-id ) &gt; 0">
+              <xsl:variable name="theDocument_1" select="document( $document-uri,/ )" />
+              <xsl:variable name="theFragment_1" select="$theDocument_1//iso:*[@id= $fragment-id ]" />
+              <xsl:if test=" $theFragment_1/self::iso:schema ">
+                 <xsl:message>Schema error: Use include to include fragments, not a whole schema</xsl:message>
+              </xsl:if>
+              <xsl:apply-templates select=" $theFragment_1" mode="do-all-patterns"/>
+		   </xsl:when>
+		  
+		   <xsl:otherwise>
+		   	  <!-- Import the top-level element if it is in schematron namespace,
+		   	  or its children otherwise, to allow a simple containment mechanism. -->
+              <xsl:variable name="theDocument_2" select="document( $document-uri,/ )" />
+              <xsl:variable name="theFragment_2" select="$theDocument_2/iso:*" />
+              <xsl:variable name="theContainedFragments" select="$theDocument_2/*/iso:*" />
+              <xsl:if test=" $theFragment_2/self::iso:schema or $theContainedFragments/self::iso:schema">
+                 <xsl:message>Schema error: Use include to include fragments, not a whole schema</xsl:message>
+              </xsl:if>
+       		<xsl:apply-templates select="$theFragment_2 | $theContainedFragments "
+       		mode="do-all-patterns" />
+       	   </xsl:otherwise>
+       </xsl:choose>
+   </xsl:template>
+   
+	<!-- ISO LET -->
+	<xsl:template match="iso:let" >
+	  <xsl:if test="ancestor::iso:schema[@queryBinding='xpath']">
+                    <xsl:message>Warning: Variables should not be used with the "xpath" query language binding.</xsl:message>
+       </xsl:if>
+		
+       <!-- lets at the top-level are implemented as parameters -->
+ 
+       	<xsl:choose>
+       		<xsl:when test="parent::iso:schema">
+       			<!-- it is an error to have an empty param/@select because an XPath is expected -->
+	      		 <axsl:param name="{@name}" select="{@value}">
+	      		 		<xsl:if test="string-length(@value) &gt; 0">
+	      		 			<xsl:attribute name="select"><xsl:value-of select="@value"/></xsl:attribute>
+	      		 		</xsl:if>
+	      		 </axsl:param> 
+       		</xsl:when>
+       		<xsl:otherwise>
+				<axsl:variable name="{@name}" select="{@value}"/>
+			</xsl:otherwise>
+		</xsl:choose>
+		  
+	</xsl:template>	
+
+	<!-- ISO NAME -->
+	<xsl:template match="iso:name" mode="text">
+	
+		<xsl:if test="@path">
+			<xsl:call-template name="process-name">
+				<xsl:with-param name="name" select="concat('name(',@path,')')"/>
+			</xsl:call-template>
+		</xsl:if>
+		<xsl:if test="not(@path)">
+			<xsl:call-template name="process-name">
+				<xsl:with-param name="name" select="'name(.)'"/>
+			</xsl:call-template>
+		</xsl:if>
+	    <xsl:call-template name="IamEmpty" />
+	</xsl:template>
+
+	<!-- ISO NS -->
+	<!-- Namespace handling is XSLT is quite tricky and implementation dependent -->
+	<xsl:template match="iso:ns">
+ 		<xsl:call-template name="handle-namespace" />
+	</xsl:template>
+
+    <!-- This template is just to provide the API hook -->
+	<xsl:template match="iso:ns"  mode="do-all-patterns" >
+               <xsl:if test="not(@uri)">
+                    <xsl:message>Markup Error: no uri attribute in &lt;ns></xsl:message>
+                </xsl:if>
+               <xsl:if test="not(@prefix)">
+                    <xsl:message>Markup Error: no prefix attribute in &lt;ns></xsl:message>
+                </xsl:if>
+	        <xsl:call-template name="IamEmpty" />
+		<xsl:call-template name="process-ns" >
+			<xsl:with-param name="prefix" select="@prefix"/>
+			<xsl:with-param name="uri" select="@uri"/>
+		</xsl:call-template>
+	</xsl:template>
+
+	<!-- ISO P -->
+	<xsl:template match="iso:schema/iso:p " mode="do-schema-p" >
+		<xsl:call-template name="process-p">
+			<xsl:with-param name="class" select="@class"/>
+			<xsl:with-param name="icon" select="@icon"/>
+			<xsl:with-param name="id" select="@id"/>
+			<xsl:with-param name="lang" select="@xml:lang"/>
+		</xsl:call-template>
+	</xsl:template>
+	<xsl:template match="iso:pattern/iso:p " mode="do-pattern-p" >
+		<xsl:call-template name="process-p">
+			<xsl:with-param name="class" select="@class"/>
+			<xsl:with-param name="icon" select="@icon"/>
+			<xsl:with-param name="id" select="@id"/>
+			<xsl:with-param name="lang" select="@xml:lang"/>
+		</xsl:call-template>
+	</xsl:template>
+	
+    <!-- Currently, iso:p in other position are not passed through to the API -->
+	<xsl:template match="iso:phase/iso:p" />
+	<xsl:template match="iso:p " priority="-1" />
+
+	<!-- ISO PATTERN -->
+	<xsl:template match="iso:pattern" mode="do-all-patterns">
+	<xsl:if test="($phase = '#ALL') 
+	or (../iso:phase[@id= $phase]/iso:active[@pattern= current()/@id])">
+		<xsl:call-template name="process-pattern">
+			<!-- the following select statement assumes that
+			@id | sch:title returns node-set in document order:
+			we want the title if it is there, otherwise the @id attribute -->
+			<xsl:with-param name="name" select="(@id | iso:title )[last()]"/>
+			<xsl:with-param name="is-a" select="''"/>
+			
+					<!-- "Rich" properties -->
+					<xsl:with-param name="fpi" select="@fpi"/>
+					<xsl:with-param name="icon" select="@icon"/>
+					<xsl:with-param name="id" select="@id"/>
+					<xsl:with-param name="lang" select="@xml:lang"/>
+					<xsl:with-param name="see" select="@see" />
+					<xsl:with-param name="space" select="@xml:space" />
+		</xsl:call-template>
+		<xsl:choose>
+		  <xsl:when test="$select-contexts='key'">
+		    <axsl:apply-templates select="key('M','M{count(preceding-sibling::*)}')" mode="M{count(preceding-sibling::*)}"/>
+		  </xsl:when>
+		  <xsl:when test="$select-contexts='//'">
+		    <axsl:apply-templates mode="M{count(preceding-sibling::*)}">
+		      <xsl:attribute name="select">
+			<xsl:text>//(</xsl:text>
+			<xsl:for-each select="iso:rule/@context">
+			  <xsl:text>(</xsl:text>
+			  <xsl:value-of select="."/>
+			  <xsl:text>)</xsl:text>
+			  <xsl:if test="position()!=last()">|</xsl:if>
+			</xsl:for-each>
+			<xsl:text>)</xsl:text>
+			<xsl:if test="$visit-text='false'">[not(self::text())]</xsl:if>
+		      </xsl:attribute>
+		    </axsl:apply-templates>
+		  </xsl:when>
+		  <xsl:otherwise>
+		    <axsl:apply-templates select="/" mode="M{count(preceding-sibling::*)}"/>
+		  </xsl:otherwise>
+		</xsl:choose>
+        </xsl:if>
+	</xsl:template>
+	
+	<xsl:template match="iso:pattern[@abstract='true']">
+    
+             <xsl:message>Schema implementation error: This schema has abstract patterns, yet they are supposed to be preprocessed out already
+             </xsl:message>
+    </xsl:template>
+
+    <!-- Here is the template for the normal case of patterns -->
+	<xsl:template match="iso:pattern[not(@abstract='true')]">
+     
+      <xsl:if test="($phase = '#ALL') 
+	          or (../iso:phase[@id= $phase]/iso:active[@pattern= current()/@id])">
+ 
+		<xsl:text>&#10;&#10;</xsl:text>
+		<xsl:comment>PATTERN <xsl:value-of select="@id" /> <xsl:value-of select="iso:title" /> </xsl:comment><xsl:text>&#10;</xsl:text>      
+		<xsl:apply-templates />
+		
+		<!-- DPC select-contexts test -->
+		<xsl:if test="not($select-contexts)">
+		  <axsl:template match="text()" priority="-1" mode="M{count(preceding-sibling::*)}">
+		    <!-- strip characters -->
+		  </axsl:template>
+		  
+		  <!-- DPC introduce context-xpath variable -->
+		  <axsl:template match="@*|node()"
+				 priority="-2"
+				 mode="M{ count(preceding-sibling::*) }">
+		    <axsl:apply-templates select="{$context-xpath}" mode="M{count(preceding-sibling::*)}"/>
+		  </axsl:template>
+		</xsl:if>
+      </xsl:if>
+	</xsl:template>
+
+	<!-- ISO PHASE -->
+	<xsl:template match="iso:phase" >
+                <xsl:if test="not(@id)">
+                    <xsl:message>Markup Error: no id attribute in &lt;phase></xsl:message>
+                </xsl:if>
+		  <xsl:apply-templates/>
+	</xsl:template>
+
+	<!-- ISO RULE -->
+	<xsl:template match="iso:rule[not(@abstract='true')] ">
+                <xsl:if test="not(@context)">
+                    <xsl:message>Markup Error: no context attribute in &lt;rule></xsl:message>
+                </xsl:if>
+        <xsl:text>&#10;&#10;	</xsl:text>
+		<xsl:comment>RULE <xsl:value-of select="@id" /> </xsl:comment><xsl:text>&#10;</xsl:text>   
+        <xsl:if test="iso:title">
+		    <xsl:comment><xsl:value-of select="iso:title" /></xsl:comment>
+		  </xsl:if>
+		<!-- DPC select-contexts -->
+		<xsl:if test="$select-contexts='key'">
+		    <axsl:key name="M"
+			      match="{@context}" 
+			      use="'M{count(../preceding-sibling::*)}'"/>
+		</xsl:if>
+   
+	
+<!-- DPC priorities count up from 1000 not down from 4000 (templates in same priority order as before) -->
+		<axsl:template match="{@context}"
+		priority="{1000 + count(following-sibling::*)}" mode="M{count(../preceding-sibling::*)}">
+			<xsl:call-template name="process-rule">
+				<xsl:with-param name="context" select="@context"/>
+				
+					<!-- "Rich" properties -->
+					<xsl:with-param name="fpi" select="@fpi"/>
+					<xsl:with-param name="icon" select="@icon"/>
+					<xsl:with-param name="id" select="@id"/>
+					<xsl:with-param name="lang" select="@xml:lang"/>
+					<xsl:with-param name="see" select="@see" />
+					<xsl:with-param name="space" select="@xml:space" />
+					
+					<!-- "Linking" properties -->
+					<xsl:with-param name="role" select="@role" />
+					<xsl:with-param name="subject" select="@subject" />
+			</xsl:call-template>
+			<xsl:apply-templates/>
+			<!-- DPC introduce context-xpath and select-contexts variables -->
+			<xsl:if test="not($select-contexts)">
+			  <axsl:apply-templates select="{$context-xpath}" mode="M{count(../preceding-sibling::*)}"/>
+			</xsl:if>
+		</axsl:template>
+	</xsl:template>
+
+
+	<!-- ISO ABSTRACT RULE -->
+	<xsl:template match="iso:rule[@abstract='true'] " >
+		<xsl:if test=" not(@id)">
+                    <xsl:message>Markup Error: no id attribute on abstract &lt;rule></xsl:message>
+                </xsl:if>
+ 		<xsl:if test="@context">
+                    <xsl:message>Markup Error: (2) context attribute on abstract &lt;rule></xsl:message>
+                </xsl:if>
+	</xsl:template>
+
+	<xsl:template match="iso:rule[@abstract='true']"
+		mode="extends" >
+                <xsl:if test="@context">
+                    <xsl:message>Markup Error: context attribute on abstract &lt;rule></xsl:message>
+                </xsl:if>
+			<xsl:apply-templates/>
+	</xsl:template>
+
+	<!-- ISO SPAN -->
+	<xsl:template match="iso:span" mode="text">
+		<xsl:call-template name="process-span">
+			<xsl:with-param name="class" select="@class"/>
+		</xsl:call-template>
+	</xsl:template>
+
+	<!-- ISO TITLE -->
+	
+	<xsl:template match="iso:schema/iso:title"  priority="1">
+	     <xsl:call-template name="process-schema-title" />
+	</xsl:template>
+ 
+	
+	<xsl:template match="iso:title" >
+	     <xsl:call-template name="process-title" />
+	</xsl:template>
+ 
+
+	<!-- ISO VALUE-OF -->
+	<xsl:template match="iso:value-of" mode="text" >
+        <xsl:if test="not(@select)">
+            <xsl:message>Markup Error: no select attribute in &lt;value-of></xsl:message>
+        </xsl:if>
+	    <xsl:call-template name="IamEmpty" />
+	         
+		<xsl:choose>
+			<xsl:when test="@select">
+				<xsl:call-template name="process-value-of">
+					<xsl:with-param name="select" select="@select"/>  
+				</xsl:call-template>
+			</xsl:when>
+			<xsl:otherwise >
+				<xsl:call-template name="process-value-of">
+					<xsl:with-param name="select" select="'.'"/>
+				</xsl:call-template>
+			</xsl:otherwise>
+        </xsl:choose> 
+        
+	</xsl:template>
+
+
+<!-- ============================================================== -->
+<!-- DEFAULT TEXT HANDLING  -->
+<!-- ============================================================== -->
+	<xsl:template match="text()" priority="-1" mode="do-keys">
+		<!-- strip characters -->
+	</xsl:template>
+	<xsl:template match="text()" priority="-1" mode="do-all-patterns">
+		<!-- strip characters -->
+	</xsl:template>
+        <xsl:template match="text()" priority="-1" mode="do-schema-p">
+		<!-- strip characters -->
+	</xsl:template>
+        <xsl:template match="text()" priority="-1" mode="do-pattern-p">
+		<!-- strip characters -->
+	</xsl:template>
+	
+	<xsl:template match="text()" priority="-1">
+		<!-- Strip characters -->
+	</xsl:template>
+	
+	<xsl:template match="text()" mode="text">
+		<xsl:value-of select="."/>
+	</xsl:template>
+
+	<xsl:template match="text()" mode="inline-text">
+		<xsl:value-of select="."/>
+	</xsl:template>
+
+<!-- ============================================================== -->
+<!-- UTILITY TEMPLATES -->
+<!-- ============================================================== -->
+<xsl:template name="IamEmpty">
+	<xsl:if test="count( * )">
+		<xsl:message>
+			<xsl:text>Warning: </xsl:text>
+			<xsl:value-of select="name(.)"/>
+			<xsl:text> must not contain any child elements</xsl:text>
+		</xsl:message>
+	</xsl:if>
+</xsl:template>
+
+<xsl:template name="diagnosticsSplit">
+  <!-- Process at the current point the first of the <diagnostic> elements
+       referred to parameter str, and then recurse -->
+  <xsl:param name="str"/>
+  <xsl:variable name="start">
+    <xsl:choose>
+      <xsl:when test="contains($str,' ')">
+	<xsl:value-of  select="substring-before($str,' ')"/>
+      </xsl:when>
+      <xsl:otherwise><xsl:value-of select="$str"/></xsl:otherwise>
+    </xsl:choose>
+  </xsl:variable>
+
+  <xsl:variable name="end">
+    <xsl:if test="contains($str,' ')">
+      <xsl:value-of select="substring-after($str,' ')"/>
+    </xsl:if>
+  </xsl:variable>
+
+  <!-- This works with all namespaces -->
+  <xsl:if test="not(string-length(normalize-space($start)) = 0)
+  		and not(//iso:diagnostic[@id = $start])
+		and not(//sch:diagnostic[@id = $start]) 
+		and not(//diagnostic[@id = $start])">
+	<xsl:message>Reference error: A diagnostic "<xsl:value-of select="string($start)"
+	/>" has been referenced but is not declared</xsl:message>
+  </xsl:if>
+
+  <xsl:if test="string-length(normalize-space($start)) > 0">
+     <xsl:text> </xsl:text>
+     <xsl:apply-templates 
+        select="//iso:diagnostic[@id = $start ]
+        	| //sch:diagnostic[@id = $start ] 
+            | //diagnostic[@id= $start ]"/>
+  </xsl:if>
+
+  <xsl:if test="not($end='')">
+    <xsl:call-template name="diagnosticsSplit">
+      <xsl:with-param name="str" select="$end"/>
+    </xsl:call-template>
+  </xsl:if>
+</xsl:template>
+
+<!-- It would be nice to use this but xsl:namespace does not
+  allow a fallback -->
+<!--xsl:template name="handle-namespace" version="2.0">
+   <xsl:namespace name="{@prefix}" select="@uri">
+</xsl:template-->
+
+<xsl:template name="handle-namespace">
+       <!-- experimental code from http://eccnet.eccnet.com/pipermail/schematron-love-in/2006-June/000104.html -->
+       <!-- Handle namespaces differently for exslt systems, msxml, and default, only using XSLT1 syntax -->
+       <!-- For more info see  http://fgeorges.blogspot.com/2007/01/creating-namespace-nodes-in-xslt-10.html -->
+       <xsl:choose>
+          <!-- The following code works for XSLT1 -->
+        <xsl:when test="function-available('exsl:node-set')">
+           <xsl:variable name="ns-dummy-elements">
+             <xsl:element name="{@prefix}:dummy" namespace="{@uri}"/>
+           </xsl:variable>
+       	   <xsl:variable name="p" select="@prefix"/>
+           <xsl:copy-of select="exsl:node-set($ns-dummy-elements)
+                                  /*/namespace::*[local-name()=$p]"/>
+         </xsl:when>        
+
+   			<!-- End XSLT1  code -->
+  
+        <!-- Not tested yet       
+    	<xsl:when test="function-available('msxsl:node-set')">
+      		<xsl:variable name="ns-dummy-elements">
+        		<xsl:element name="{ $prefix }:e" namespace="{ $uri }"/>
+      		</xsl:variable>
+      		<xsl:copy-of select="msxsl:node-set($ns-dummy-elements)/*/namespace::*"/>
+    	</xsl:when>
+        -->
+        
+        <xsl:when test="@prefix = 'xsl' ">
+           <!-- Do not generate dummy attributes with the xsl: prefix, as these
+                are errors against XSLT, because we presume that the output
+                stylesheet uses the xsl prefix. In any case, there would already
+                be a namespace declaration for the XSLT namespace generated
+                automatically, presumably using "xsl:".
+           -->
+        </xsl:when>
+        
+        <xsl:when test="@uri = 'http://www.w3.org/1999/XSL/Transform'">
+          <xsl:message terminate="yes">
+            <xsl:text>Using the XSLT namespace with a prefix other than "xsl" in </xsl:text>
+            <xsl:text>Schematron rules is not supported </xsl:text>
+            <xsl:text>in this processor: </xsl:text>
+            <xsl:value-of select="system-property('xsl:vendor')"/>
+          </xsl:message>
+        </xsl:when>
+
+        <xsl:otherwise>
+          <xsl:attribute name="{concat(@prefix,':dummy-for-xmlns')}" namespace="{@uri}" />
+           
+        </xsl:otherwise>
+      </xsl:choose>
+
+
+</xsl:template>
+
+<!-- ============================================================== -->
+<!-- UNEXPECTED ELEMENTS -->
+<!-- ============================================================== -->
+
+	<xsl:template match="iso:*"  priority="-2">
+	   <xsl:message>
+			<xsl:text>Error: unrecognized element in ISO Schematron namespace: check spelling
+			and capitalization</xsl:text>
+			<xsl:value-of select="name(.)"/>
+		</xsl:message>
+	</xsl:template>
+	
+	
+	<!-- Swallow old namespace elements: there is an upfront test for them elsewhere -->
+	<xsl:template match="sch:*"  priority="-2" />
+	
+	<xsl:template match="*"  priority="-3">
+	    <xsl:choose>
+	       <xsl:when test=" $allow-foreign = 'false' ">
+				<xsl:message>
+					<xsl:text>Warning: unrecognized element </xsl:text>
+					<xsl:value-of select="name(.)"/>
+				</xsl:message>
+			</xsl:when>
+			<xsl:otherwise>
+				<xsl:copy-of select="." />
+			</xsl:otherwise>
+		</xsl:choose>
+	</xsl:template>
+	
+	<xsl:template match="iso:*" mode="text" priority="-2" />
+	<xsl:template match="*" mode="text" priority="-3">
+	    <xsl:choose>
+	       <xsl:when test=" $allow-foreign = 'false' ">
+				<xsl:message>
+					<xsl:text>Warning: unrecognized element </xsl:text>
+					<xsl:value-of select="name(.)"/>
+				</xsl:message>
+			</xsl:when>
+			<xsl:otherwise>
+				<xsl:copy-of select="." />
+			</xsl:otherwise>
+		</xsl:choose>
+	</xsl:template>
+
+<!-- ============================================================== -->
+<!-- DEFAULT NAMED TEMPLATES -->
+<!-- These are the actions that are performed unless overridden -->
+<!-- ============================================================== -->
+ 
+	<xsl:template name="process-prolog"/>
+	<!-- no params -->
+
+	<xsl:template name="process-root">
+		<xsl:param name="contents"/>
+		<xsl:param name="id" />
+		<xsl:param name="version" />
+		<xsl:param name="schemaVersion" />
+		<xsl:param name="queryBinding" />
+		<xsl:param name="title" />
+
+
+		<!-- "Rich" parameters -->
+		<xsl:param name="fpi" />
+		<xsl:param name="icon" />
+		<xsl:param name="lang" />
+		<xsl:param name="see" />
+		<xsl:param name="space" />
+
+		<xsl:copy-of select="$contents"/>
+	</xsl:template>
+
+	<xsl:template name="process-assert">
+
+		<xsl:param name="test"/>
+		<xsl:param name="diagnostics" />
+		<xsl:param name="id" />
+		<xsl:param name="flag" />
+
+           	<!-- "Linkable" parameters -->
+		<xsl:param name="role"/>
+		<xsl:param name="subject"/>
+
+		<!-- "Rich" parameters -->
+		<xsl:param name="fpi" />
+		<xsl:param name="icon" />
+		<xsl:param name="lang" />
+		<xsl:param name="see" />
+		<xsl:param name="space" />
+
+
+		<xsl:call-template name="process-message">
+			<xsl:with-param name="pattern" select="$test"/>
+			<xsl:with-param name="role" select="$role"/>
+		</xsl:call-template>
+		
+		
+	</xsl:template>
+
+	<xsl:template name="process-report">
+		<xsl:param name="test"/>
+		<xsl:param name="diagnostics" />
+		<xsl:param name="id" />
+		<xsl:param name="flag" />
+
+           	<!-- "Linkable" parameters -->
+		<xsl:param name="role"/>
+		<xsl:param name="subject"/>
+
+		<!-- "Rich" parameters -->
+		<xsl:param name="fpi" />
+		<xsl:param name="icon" /> 
+		<xsl:param name="lang" />
+		<xsl:param name="see" />
+		<xsl:param name="space" />
+
+		<xsl:call-template name="process-message">
+			<xsl:with-param name="pattern" select="$test"/>
+			<xsl:with-param name="role" select="$role"/>
+		</xsl:call-template>
+	</xsl:template>
+
+	<xsl:template name="process-diagnostic">
+		<xsl:param name="id" />
+
+		<!-- "Rich" parameters -->
+		<xsl:param name="fpi" />
+		<xsl:param name="icon" />
+		<xsl:param name="lang" />
+		<xsl:param name="see" />
+		<xsl:param name="space" />
+		
+	    <!-- We generate too much whitespace rather than risking concatenation -->
+		<axsl:text> </axsl:text>
+		<xsl:apply-templates mode="text"/>
+		<axsl:text> </axsl:text>
+	</xsl:template>
+
+	<xsl:template name="process-dir">
+      	<xsl:param name="value" />
+
+	    <!-- We generate too much whitespace rather than risking concatenation -->
+		<axsl:text> </axsl:text>
+		<xsl:apply-templates mode="inline-text"/>
+		<axsl:text> </axsl:text>
+	</xsl:template>
+
+	<xsl:template name="process-emph"> 
+	    <!-- We generate too much whitespace rather than risking concatenation -->
+		<axsl:text> </axsl:text>
+		<xsl:apply-templates mode="inline-text"/>
+		<axsl:text> </axsl:text>
+	</xsl:template>
+	
+	<xsl:template name="process-name">
+		<xsl:param name="name"/>
+		
+		<!-- We generate too much whitespace rather than risking concatenation -->
+		<axsl:text> </axsl:text>
+		<axsl:value-of select="{$name}"/>
+		<axsl:text> </axsl:text>
+		
+    </xsl:template>
+
+	<xsl:template name="process-ns" >
+	<!-- Note that process-ns is for reporting. The sch:ns elements are 
+	     independently used in the sch:schema template to provide namespace bindings -->
+		<xsl:param name="prefix"/>
+		<xsl:param name="uri" />
+      </xsl:template>
+
+	<xsl:template name="process-p">
+		<xsl:param name="id" />
+		<xsl:param name="class" />
+		<xsl:param name="icon" />
+		<xsl:param name="lang" />
+      </xsl:template>
+
+	<xsl:template name="process-pattern">
+		<xsl:param name="id" />
+		<xsl:param name="name" />
+		<xsl:param name="is-a" />
+
+		<!-- "Rich" parameters -->
+		<xsl:param name="fpi" />
+		<xsl:param name="icon" />
+		<xsl:param name="lang" />
+		<xsl:param name="see" />
+		<xsl:param name="space" />
+      </xsl:template>
+      
+
+	<xsl:template name="process-rule">
+		<xsl:param name="context" />
+
+		<xsl:param name="id" />
+		<xsl:param name="flag" />
+
+           	<!-- "Linkable" parameters -->
+		<xsl:param name="role"/>
+		<xsl:param name="subject"/>
+  
+		<!-- "Rich" parameters -->
+		<xsl:param name="fpi" />
+		<xsl:param name="icon" />
+		<xsl:param name="lang" />
+		<xsl:param name="see" />
+		<xsl:param name="space" />
+      </xsl:template>
+
+	<xsl:template name="process-span" >
+		<xsl:param name="class" />
+
+	    <!-- We generate too much whitespace rather than risking concatenation -->
+		<axsl:text> </axsl:text>
+		<xsl:apply-templates mode="inline-text"/>
+		<axsl:text> </axsl:text>		
+	</xsl:template>
+
+	<xsl:template name="process-title" >
+		<xsl:param name="class" />
+	   <xsl:call-template name="process-p">
+	      <xsl:with-param  name="class">title</xsl:with-param>
+	   </xsl:call-template>
+	</xsl:template>
+		
+	<xsl:template name="process-schema-title" >
+		<xsl:param name="class" />
+	   <xsl:call-template name="process-title">
+	      <xsl:with-param  name="class">schema-title</xsl:with-param>
+	   </xsl:call-template>
+	</xsl:template>
+
+	<xsl:template name="process-value-of">
+		<xsl:param name="select"/>
+		
+	    <!-- We generate too much whitespace rather than risking concatenation -->
+		<axsl:text> </axsl:text>
+		<axsl:value-of select="{$select}"/>
+		<axsl:text> </axsl:text>
+	</xsl:template>
+
+	<!-- default output action: the simplest customization is to just override this -->
+	<xsl:template name="process-message">
+		<xsl:param name="pattern" />
+            <xsl:param name="role" />
+
+		<xsl:apply-templates mode="text"/>	
+		 <xsl:if test=" $message-newline = 'true'" >
+			<axsl:value-of  select="string('&#10;')"/>
+		</xsl:if>
+		
+	</xsl:template>
+</xsl:stylesheet>
+
+
+

.venv/lib/python3.12/site-packages/lxml/isoschematron/resources/xsl/iso-schematron-xslt1/iso_svrl_for_xslt1.xsl

@@ -0,0 +1,588 @@
+<?xml version="1.0" ?>
+<!-- 
+   ISO_SVRL.xsl   
+
+   Implementation of Schematron Validation Report Language from ISO Schematron
+   ISO/IEC 19757 Document Schema Definition Languages (DSDL) 
+     Part 3: Rule-based validation  Schematron 
+     Annex D: Schematron Validation Report Language 
+
+  This ISO Standard is available free as a Publicly Available Specification in PDF from ISO.
+  Also see www.schematron.com for drafts and other information.
+
+  This implementation of SVRL is designed to run with the "Skeleton" implementation 
+  of Schematron which Oliver Becker devised. The skeleton code provides a 
+  Schematron implementation but with named templates for handling all output; 
+  the skeleton provides basic templates for output using this API, but client
+  validators can be written to import the skeleton and override the default output
+  templates as required. (In order to understand this, you must understand that
+  a named template such as "process-assert" in this XSLT stylesheet overrides and
+  replaces any template with the same name in the imported skeleton XSLT file.)
+
+  The other important thing to understand in this code is that there are different
+  versions of the Schematron skeleton. These track the development of Schematron through
+  Schematron 1.5, Schematron 1.6 and now ISO Schematron. One only skeleton must be
+  imported. The code has templates for the different skeletons commented out for 
+  convenience. ISO Schematron has a different namespace than Schematron 1.5 and 1.6;
+  so the ISO Schematron skeleton has been written itself with an optional import
+  statement to in turn import the Schematron 1.6 skeleton. This will allow you to 
+  validate with schemas from either namespace.
+  
+
+  History:  
+    2009-03-18
+    	* Fix atrribute with space "see " which generates wrong name in some processors
+    2008-08-11
+   		* RJ Fix attribute/@select which saxon allows  in XSLT 1
+   2008-08-07
+    	* RJ Add output-encoding attribute to specify final encoding to use
+    	* Alter allow-foreign functionality so that Schematron span, emph and dir elements make 
+    	  it to the output, for better formatting and because span can be used to mark up
+    	  semantically interesting information embedded in diagnostics, which reduces the
+    	  need to extend SVRL itself
+    	* Diagnostic-reference had an invalid attribute @id that duplicated @diagnostic: removed
+  	2008-08-06
+    	* RJ Fix invalid output:  svrl:diagnostic-reference is not contained in an svrl:text
+    	* Output comment to SVRL file giving filename if available (from command-line parameter)
+  	2008-08-04
+  		* RJ move sch: prefix to schold: prefix to prevent confusion (we want people to
+  		be able to switch from old namespace to new namespace without changing the
+  		sch: prefix, so it is better to keep that prefix completely out of the XSLT)
+  		* Extra signature fixes (PH)
+    2008-08-03
+    	* Repair missing class parameter on process-p
+    2008-07-31
+    	* Update skeleton names
+    2007-04-03 
+    	* Add option generate-fired-rule (RG)
+    2007-02-07
+    	* Prefer true|false for parameters. But allow yes|no on some old for compatability
+    	* DP Diagnostics output to svrl:text. Diagnosis put out after assertion text.
+      	* Removed non-SVRL elements and attributes: better handled as an extra layer that invokes this one
+      	* Add more formal parameters
+      	* Correct confusion between $schemaVersion and $queryBinding
+     	* Indent
+     	* Validate against RNC schemas for XSLT 1 and 2 (with regex tests removed)
+     	* Validate output with UniversalTest.sch against RNC schema for ISO SVRL
+    	
+    2007-02-01
+       	* DP. Update formal parameters of overriding named templates to handle more attributes.
+       	* DP. Refactor handling of rich and linkable parameters to a named template.
+
+    2007-01-22
+    	* DP change svrl:ns to svrl:ns-in-attribute-value
+		* Change default when no queryBinding from "unknown" to "xslt"
+	
+    2007-01-18:
+     	* Improve documentation
+     	* KH Add command-line options to generate paths or not 
+       	* Use axsl:attribute rather than xsl:attribute to shut XSLT2 up
+       	* Add extra command-line options to pass to the iso_schematron_skeleton
+  
+    2006-12-01: iso_svrl.xsl Rick Jelliffe, 
+          * update namespace, 
+          * update phase handling,
+          * add flag param to process-assert and process-report & @ flag on output
+  
+    2001: Conformance1-5.xsl Rick Jelliffe, 
+          * Created, using the skeleton code contributed by Oliver Becker
+-->
+<!--
+ Derived from Conformance1-5.xsl.
+
+ Copyright (c) 2001, 2006 Rick Jelliffe and Academia Sinica Computing Center, Taiwan
+
+ This software is provided 'as-is', without any express or implied warranty. 
+ In no event will the authors be held liable for any damages arising from 
+ the use of this software.
+
+ Permission is granted to anyone to use this software for any purpose, 
+ including commercial applications, and to alter it and redistribute it freely,
+ subject to the following restrictions:
+
+ 1. The origin of this software must not be misrepresented; you must not claim
+ that you wrote the original software. If you use this software in a product, 
+ an acknowledgment in the product documentation would be appreciated but is 
+ not required.
+
+ 2. Altered source versions must be plainly marked as such, and must not be 
+ misrepresented as being the original software.
+
+ 3. This notice may not be removed or altered from any source distribution.
+-->
+
+<!-- Ideas nabbed from schematrons by Francis N., Miloslav N. and David C. -->
+
+<!-- The command-line parameters are:
+  			phase           NMTOKEN | "#ALL" (default) Select the phase for validation
+    		allow-foreign   "true" | "false" (default)   Pass non-Schematron elements  and rich markup  to the generated stylesheet
+            diagnose= true | false|yes|no    Add the diagnostics to the assertion test in reports (yes|no are obsolete)
+            generate-paths=true|false|yes|no   generate the @location attribute with XPaths (yes|no are obsolete)
+            sch.exslt.imports semi-colon delimited string of filenames for some EXSLT implementations          
+   		 optimize        "visit-no-attributes"     Use only when the schema has no attributes as the context nodes
+		 generate-fired-rule "true"(default) | "false"  Generate fired-rule elements
+            
+-->
+
+<xsl:stylesheet
+   version="1.0"
+   xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
+	xmlns:xs="http://www.w3.org/2001/XMLSchema"
+   xmlns:axsl="http://www.w3.org/1999/XSL/TransformAlias"
+   xmlns:schold="http://www.ascc.net/xml/schematron" 
+   xmlns:iso="http://purl.oclc.org/dsdl/schematron"
+   xmlns:svrl="http://purl.oclc.org/dsdl/svrl" 
+>
+
+<!-- Select the import statement and adjust the path as 
+   necessary for your system.
+   If not XSLT2 then also remove svrl:active-pattern/@document="{document-uri()}" from process-pattern()
+-->
+<!--
+<xsl:import href="iso_schematron_skeleton_for_saxon.xsl"/>
+--> 
+  
+<xsl:import href="iso_schematron_skeleton_for_xslt1.xsl"/>
+ <!--
+<xsl:import href="iso_schematron_skeleton.xsl"/>
+<xsl:import href="skeleton1-5.xsl"/>
+<xsl:import href="skeleton1-6.xsl"/>
+-->
+
+<xsl:param name="diagnose" >true</xsl:param>
+<xsl:param name="phase" >
+	<xsl:choose>
+		<!-- Handle Schematron 1.5 and 1.6 phases -->
+		<xsl:when test="//schold:schema/@defaultPhase">
+			<xsl:value-of select="//schold:schema/@defaultPhase"/>
+		</xsl:when>
+		<!-- Handle ISO Schematron phases -->
+		<xsl:when test="//iso:schema/@defaultPhase">
+			<xsl:value-of select="//iso:schema/@defaultPhase"/>
+		</xsl:when>
+		<xsl:otherwise>#ALL</xsl:otherwise>
+	</xsl:choose>
+</xsl:param>
+<xsl:param name="allow-foreign" >false</xsl:param>
+<xsl:param name="generate-paths" >true</xsl:param>
+<xsl:param name="generate-fired-rule" >true</xsl:param>
+<xsl:param name="optimize"/>
+
+<xsl:param name="output-encoding" ></xsl:param>
+
+<!-- e.g. saxon file.xml file.xsl "sch.exslt.imports=.../string.xsl;.../math.xsl" -->
+<xsl:param name="sch.exslt.imports" />
+
+
+
+<!-- Experimental: If this file called, then must be generating svrl -->
+<xsl:variable name="svrlTest" select="true()" />
+
+  
+ 
+<!-- ================================================================ -->
+
+<xsl:template name="process-prolog">
+	<axsl:output method="xml" omit-xml-declaration="no" standalone="yes"
+		indent="yes">
+		<xsl:if test=" string-length($output-encoding) &gt; 0">
+			<xsl:attribute name="encoding"><xsl:value-of select=" $output-encoding" /></xsl:attribute>
+		</xsl:if>
+    </axsl:output>
+     
+</xsl:template>
+
+<!-- Overrides skeleton.xsl -->
+<xsl:template name="process-root">
+	<xsl:param name="title"/>
+	<xsl:param name="contents" />
+	<xsl:param name="queryBinding" >xslt1</xsl:param>
+	<xsl:param name="schemaVersion" />
+	<xsl:param name="id" />
+	<xsl:param name="version"/>
+	<!-- "Rich" parameters -->
+	<xsl:param name="fpi" />
+	<xsl:param name="icon" />
+	<xsl:param name="lang" />
+	<xsl:param name="see" />
+	<xsl:param name="space" />
+	
+	<svrl:schematron-output title="{$title}" schemaVersion="{$schemaVersion}" >
+		<xsl:if test=" string-length( normalize-space( $phase )) &gt; 0 and 
+		not( normalize-space( $phase ) = '#ALL') ">
+			<axsl:attribute name="phase">
+				<xsl:value-of select=" $phase " />
+			</axsl:attribute>
+		</xsl:if>
+		<xsl:if test=" $allow-foreign = 'true'">
+		</xsl:if>
+		  <xsl:if  test=" $allow-foreign = 'true'">
+	
+		<xsl:call-template name='richParms'>
+			<xsl:with-param name="fpi" select="$fpi" />
+			<xsl:with-param name="icon" select="$icon"/>
+			<xsl:with-param name="lang" select="$lang"/>
+			<xsl:with-param name="see"  select="$see" />
+			<xsl:with-param name="space"  select="$space" />
+		</xsl:call-template>
+	</xsl:if>
+		 
+		 <axsl:comment><axsl:value-of select="$archiveDirParameter"/>  &#xA0;
+		 <axsl:value-of select="$archiveNameParameter"/> &#xA0;
+		 <axsl:value-of select="$fileNameParameter"/> &#xA0;
+		 <axsl:value-of select="$fileDirParameter"/></axsl:comment> 
+		 
+		
+		<xsl:apply-templates mode="do-schema-p" />
+		<xsl:copy-of select="$contents" />
+	</svrl:schematron-output>
+</xsl:template>
+
+
+<xsl:template name="process-assert">
+	<xsl:param name="test"/>
+	<xsl:param name="diagnostics" />
+	<xsl:param name="id" />
+	<xsl:param name="flag" />
+	<!-- "Linkable" parameters -->
+	<xsl:param name="role"/>
+	<xsl:param name="subject"/>
+	<!-- "Rich" parameters -->
+	<xsl:param name="fpi" />
+	<xsl:param name="icon" />
+	<xsl:param name="lang" />
+	<xsl:param name="see" />
+	<xsl:param name="space" />
+	<svrl:failed-assert test="{$test}" >
+		<xsl:if test="string-length( $id ) &gt; 0">
+			<axsl:attribute name="id">
+				<xsl:value-of select=" $id " />
+			</axsl:attribute>
+		</xsl:if>
+		<xsl:if test=" string-length( $flag ) &gt; 0">
+			<axsl:attribute name="flag">
+				<xsl:value-of select=" $flag " />
+			</axsl:attribute>
+		</xsl:if>
+		<!-- Process rich attributes.  -->
+		<xsl:call-template name="richParms">
+			<xsl:with-param name="fpi" select="$fpi"/>
+			<xsl:with-param name="icon" select="$icon"/>
+			<xsl:with-param name="lang" select="$lang"/>
+			<xsl:with-param name="see" select="$see" />
+			<xsl:with-param name="space" select="$space" />
+		</xsl:call-template>
+		<xsl:call-template name='linkableParms'>
+			<xsl:with-param name="role" select="$role" />
+			<xsl:with-param name="subject" select="$subject"/>
+		</xsl:call-template>
+		<xsl:if test=" $generate-paths = 'true' or $generate-paths= 'yes' ">
+			<!-- true/false is the new way -->
+			<axsl:attribute name="location">
+				<axsl:apply-templates select="." mode="schematron-get-full-path"/>
+			</axsl:attribute>
+		</xsl:if>
+		  
+		<svrl:text>
+			<xsl:apply-templates mode="text" />
+	
+		</svrl:text>
+		    <xsl:if test="$diagnose = 'yes' or $diagnose= 'true' ">
+			<!-- true/false is the new way -->
+				<xsl:call-template name="diagnosticsSplit">
+					<xsl:with-param name="str" select="$diagnostics"/>
+				</xsl:call-template>
+			</xsl:if>
+	</svrl:failed-assert>
+</xsl:template>
+
+<xsl:template name="process-report">
+	<xsl:param name="id"/>
+	<xsl:param name="test"/>
+	<xsl:param name="diagnostics"/>
+	<xsl:param name="flag" />
+	<!-- "Linkable" parameters -->
+	<xsl:param name="role"/>
+	<xsl:param name="subject"/>
+	<!-- "Rich" parameters -->
+	<xsl:param name="fpi" />
+	<xsl:param name="icon" />
+	<xsl:param name="lang" />
+	<xsl:param name="see" />
+	<xsl:param name="space" />
+	<svrl:successful-report test="{$test}" >
+		<xsl:if test=" string-length( $id ) &gt; 0">
+			<axsl:attribute name="id">
+				<xsl:value-of select=" $id " />
+			</axsl:attribute>
+		</xsl:if>
+		<xsl:if test=" string-length( $flag ) &gt; 0">
+			<axsl:attribute name="flag">
+				<xsl:value-of select=" $flag " />
+			</axsl:attribute>
+		</xsl:if>
+		
+		<!-- Process rich attributes.  -->
+		<xsl:call-template name="richParms">
+			<xsl:with-param name="fpi" select="$fpi"/>
+			<xsl:with-param name="icon" select="$icon"/>
+			<xsl:with-param name="lang" select="$lang"/>
+			<xsl:with-param name="see" select="$see" />
+			<xsl:with-param name="space" select="$space" />
+		</xsl:call-template>
+		<xsl:call-template name='linkableParms'>
+			<xsl:with-param name="role" select="$role" />
+			<xsl:with-param name="subject" select="$subject"/>
+		</xsl:call-template>
+		<xsl:if test=" $generate-paths = 'yes' or $generate-paths = 'true' ">
+			<!-- true/false is the new way -->
+			<axsl:attribute name="location">
+				<axsl:apply-templates select="." mode="schematron-get-full-path"/>
+			</axsl:attribute>
+		</xsl:if>
+	 
+		<svrl:text>
+			<xsl:apply-templates mode="text" />
+
+		</svrl:text>
+			<xsl:if test="$diagnose = 'yes' or $diagnose='true' ">
+			<!-- true/false is the new way -->
+				<xsl:call-template name="diagnosticsSplit">
+					<xsl:with-param name="str" select="$diagnostics"/>
+				</xsl:call-template>
+			</xsl:if>
+	</svrl:successful-report>
+</xsl:template>
+
+
+    <!-- Overrides skeleton -->
+	<xsl:template name="process-dir" >
+		<xsl:param name="value" />
+        <xsl:choose>
+        	<xsl:when test=" $allow-foreign = 'true'">
+        		<xsl:copy-of select="."/>
+        	</xsl:when>
+       
+        <xsl:otherwise>
+	    <!-- We generate too much whitespace rather than risking concatenation -->
+		<axsl:text> </axsl:text>
+		<xsl:apply-templates mode="inline-text"/>
+		<axsl:text> </axsl:text>
+		</xsl:otherwise>
+		 </xsl:choose>		
+	</xsl:template>
+
+<xsl:template name="process-diagnostic">
+	<xsl:param name="id"/>
+	<!-- Rich parameters -->
+	<xsl:param name="fpi" />
+	<xsl:param name="icon" />
+	<xsl:param name="lang" />
+	<xsl:param name="see" />
+	<xsl:param name="space" />
+	<svrl:diagnostic-reference diagnostic="{$id}" >
+	  
+		<xsl:call-template name="richParms">
+			<xsl:with-param name="fpi" select="$fpi"/>
+			<xsl:with-param name="icon" select="$icon"/>
+			<xsl:with-param name="lang" select="$lang"/>
+			<xsl:with-param name="see" select="$see" />
+			<xsl:with-param name="space" select="$space" />
+		</xsl:call-template> 
+<xsl:text>
+</xsl:text>
+ 
+		<xsl:apply-templates mode="text"/>
+		 
+	</svrl:diagnostic-reference>
+</xsl:template>
+
+
+    <!-- Overrides skeleton -->
+	<xsl:template name="process-emph" >
+		<xsl:param name="class" />
+        <xsl:choose>
+        	<xsl:when test=" $allow-foreign = 'true'">
+        		<xsl:copy-of select="."/>
+        	</xsl:when> 
+        <xsl:otherwise>
+	    <!-- We generate too much whitespace rather than risking concatenation -->
+		<axsl:text> </axsl:text>
+		<xsl:apply-templates mode="inline-text"/>
+		<axsl:text> </axsl:text>
+		</xsl:otherwise>
+	 	</xsl:choose>	
+	</xsl:template>
+
+<xsl:template name="process-rule">
+	<xsl:param name="id"/>
+	<xsl:param name="context"/>
+	<xsl:param name="flag"/>
+	<!-- "Linkable" parameters -->
+	<xsl:param name="role"/>
+	<xsl:param name="subject"/>
+	<!-- "Rich" parameters -->
+	<xsl:param name="fpi" />
+	<xsl:param name="icon" />
+	<xsl:param name="lang" />
+	<xsl:param name="see" />
+	<xsl:param name="space" />
+	<xsl:if test=" $generate-fired-rule = 'true'">
+	<svrl:fired-rule context="{$context}" >
+		<!-- Process rich attributes.  -->
+		<xsl:call-template name="richParms">
+			<xsl:with-param name="fpi" select="$fpi"/>
+			<xsl:with-param name="icon" select="$icon"/>
+			<xsl:with-param name="lang" select="$lang"/>
+			<xsl:with-param name="see" select="$see" />
+			<xsl:with-param name="space" select="$space" />
+		</xsl:call-template>
+		<xsl:if test=" string( $id )">
+			<xsl:attribute name="id">
+				<xsl:value-of select=" $id " />
+			</xsl:attribute>
+		</xsl:if>
+		<xsl:if test=" string-length( $role ) &gt; 0">
+			<xsl:attribute name="role">
+				<xsl:value-of select=" $role " />
+			</xsl:attribute>
+		</xsl:if> 
+	</svrl:fired-rule>
+</xsl:if>
+</xsl:template>
+
+<xsl:template name="process-ns">
+	<xsl:param name="prefix"/>
+	<xsl:param name="uri"/>
+	<svrl:ns-prefix-in-attribute-values uri="{$uri}" prefix="{$prefix}" />
+</xsl:template>
+
+<xsl:template name="process-p"> 
+	<xsl:param name="icon"/>
+	<xsl:param name="class"/>
+	<xsl:param name="id"/>
+	<xsl:param name="lang"/>
+	 
+	<svrl:text> 
+		<xsl:apply-templates mode="text"/>
+	</svrl:text>
+</xsl:template>
+
+<xsl:template name="process-pattern">
+	<xsl:param name="name"/>
+	<xsl:param name="id"/>
+	<xsl:param name="is-a"/>
+	
+	<!-- "Rich" parameters -->
+	<xsl:param name="fpi" />
+	<xsl:param name="icon" />
+	<xsl:param name="lang" />
+	<xsl:param name="see" />
+	<xsl:param name="space" />
+	<svrl:active-pattern > 
+		<xsl:if test=" string( $id )">
+			<axsl:attribute name="id">
+				<xsl:value-of select=" $id " />
+			</axsl:attribute>
+		</xsl:if>
+		<xsl:if test=" string( $name )">
+			<axsl:attribute name="name">
+				<xsl:value-of select=" $name " />
+			</axsl:attribute>
+		</xsl:if> 
+		 
+		<xsl:call-template name='richParms'>
+			<xsl:with-param name="fpi" select="$fpi"/>
+			<xsl:with-param name="icon" select="$icon"/>
+			<xsl:with-param name="lang" select="$lang"/>
+			<xsl:with-param name="see" select="$see" />
+			<xsl:with-param name="space" select="$space" />
+		</xsl:call-template>
+		
+		<!-- ?? report that this screws up iso:title processing  -->
+		<xsl:apply-templates mode="do-pattern-p"/>
+		<!-- ?? Seems that this apply-templates is never triggered DP -->
+		<axsl:apply-templates />
+	</svrl:active-pattern>
+</xsl:template>
+
+<!-- Overrides skeleton -->
+<xsl:template name="process-message" > 
+	<xsl:param name="pattern"/>
+	<xsl:param name="role"/>
+</xsl:template>
+
+
+    <!-- Overrides skeleton -->
+	<xsl:template name="process-span" >
+		<xsl:param name="class" />
+        <xsl:choose>
+        	<xsl:when test=" $allow-foreign = 'true'">
+        		<xsl:copy-of select="."/>
+        	</xsl:when> 
+        <xsl:otherwise>
+	    <!-- We generate too much whitespace rather than risking concatenation -->
+		<axsl:text> </axsl:text>
+		<xsl:apply-templates mode="inline-text"/>
+		<axsl:text> </axsl:text>
+		</xsl:otherwise>
+	 	</xsl:choose>	
+	</xsl:template>
+
+<!-- =========================================================================== -->
+<!-- processing rich parameters. -->
+<xsl:template name='richParms'>
+	<!-- "Rich" parameters -->
+	<xsl:param name="fpi" />
+	<xsl:param name="icon" />
+	<xsl:param name="lang" />
+	<xsl:param name="see" />
+	<xsl:param name="space" />
+	<!-- Process rich attributes.  -->
+	<xsl:if  test=" $allow-foreign = 'true'">
+	<xsl:if test="string($fpi)"> 
+		<axsl:attribute name="fpi">
+			<xsl:value-of select="$fpi"/>
+		</axsl:attribute>
+	</xsl:if>
+	<xsl:if test="string($icon)"> 
+		<axsl:attribute name="icon">
+			<xsl:value-of select="$icon"/>
+		</axsl:attribute>
+	</xsl:if>
+	<xsl:if test="string($see)"> 
+		<axsl:attribute name="see">
+			<xsl:value-of select="$see"/>
+		</axsl:attribute>
+	</xsl:if>
+	</xsl:if>
+	<xsl:if test="string($space)">
+		<axsl:attribute name="xml:space">
+			<xsl:value-of select="$space"/>
+		</axsl:attribute>
+	</xsl:if>
+	<xsl:if test="string($lang)">
+		<axsl:attribute name="xml:lang">
+			<xsl:value-of select="$lang"/>
+		</axsl:attribute>
+	</xsl:if>
+</xsl:template>
+
+<!-- processing linkable parameters. -->
+<xsl:template name='linkableParms'>
+	<xsl:param name="role"/>
+	<xsl:param name="subject"/>
+	
+	<!-- ISO SVRL has a role attribute to match the Schematron role attribute -->
+	<xsl:if test=" string($role )">
+		<axsl:attribute name="role">
+			<xsl:value-of select=" $role " />
+		</axsl:attribute>
+	</xsl:if>
+	<!-- ISO SVRL does not have a subject attribute to match the Schematron subject attribute.
+       Instead, the Schematron subject attribute is folded into the location attribute -->
+</xsl:template>
+   
+
+</xsl:stylesheet>
+

.venv/lib/python3.12/site-packages/lxml/isoschematron/resources/xsl/iso-schematron-xslt1/readme.txt

@@ -0,0 +1,84 @@
+ISO SCHEMATRON 2010
+
+XSLT implementation by Rick Jelliffe with assistance from members of Schematron-love-in maillist.
+
+2010-04-21
+
+Two distributions are available. One is for XSLT1 engines. 
+The other is for XSLT2 engines, such as SAXON 9.
+
+
+This version of Schematron splits the process into a pipeline of several different XSLT stages.
+
+1) First, preprocess your Schematron schema with iso_dsdl_include.xsl.  
+This is a macro processor to assemble the schema from various parts. 
+If your schema is not in separate parts, you can skip this stage.
+This stage also generates error messages for some common XPath syntax problems.
+
+2) Second, preprocess the output from stage 1 with iso_abstract_expand.xsl.  
+This is a macro processor to convert abstract patterns to real patterns. 
+If your schema does not use abstract patterns, you can skip this
+stage.
+
+3) Third, compile the Schematron schema into an XSLT script. 
+This will typically use iso_svrl_for_xslt1.xsl or iso_svrl_for_xslt2.xsl 
+(which in turn invoke iso_schematron_skeleton_for_xslt1.xsl or iso_schematron_skeleton_for_saxon.xsl)
+However, other "meta-stylesheets" are also in common use; the principle of operation is the same.
+If your schema uses Schematron phases, supply these as command line/invocation parameters
+to this process.
+
+4) Fourth, run the script generated by stage 3 against the document being validated.
+If you are using the SVRL script, then the output of validation will be an XML document.
+If your schema uses Schematron parameters, supply these as command line/invocation parameters
+to this process. 
+
+
+The XSLT2 distribution also features several next generation features, 
+such as validating multiple documents. See the source code for details.
+
+Schematron assertions can be written in any language, of course; the file
+sch-messages-en.xhtml contains the diagnostics messages from the XSLT2 skeleton
+in English, and this can be used as template to localize the skeleton's
+error messages. Note that typically programming errors in Schematron are XPath
+errors, which requires localized messages from the XSLT engine.
+
+ANT
+---
+To give an example of how to process a document, here is a sample ANT task.
+
+<target  name="schematron-compile-test" >
+
+	   <!-- expand inclusions -->
+	   <xslt basedir="test/schematron"
+	   		style="iso_dsdl_include.xsl" in="test.sch"  out="test1.sch"> 
+	   				<classpath>
+	   					<pathelement location="${lib.dir}/saxon9.jar"/>
+	   				</classpath>
+	   </xslt>
+
+	   <!-- expand abstract patterns -->
+	   <xslt basedir="test/schematron"
+	   		style="iso_abstract_expand.xsl" in="test1.sch"  out="test2.sch"> 
+	   				<classpath>
+	   					<pathelement location="${lib.dir}/saxon9.jar"/>
+	   				</classpath>
+	   </xslt>
+
+
+
+	   <!-- compile it -->
+	   <xslt basedir="test/schematron"
+	   		style="iso_svrl_for_xslt2.xsl" in="test2.sch"  out="test.xsl"> 
+	   				<classpath>
+	   					<pathelement location="${lib.dir}/saxon9.jar"/>
+	   				</classpath>
+	   </xslt>
+	   
+	   <!-- validate -->
+	   <xslt basedir="test/schematron"
+		   		style="test.xsl" in="instance.xml"  out="instance.svrlt"> 
+		   				<classpath>
+		   					<pathelement location="${lib.dir}/saxon9.jar"/>
+		   				</classpath>
+	</xslt>
+		</target>

.venv/lib/python3.12/site-packages/lxml/iterparse.pxi

@@ -0,0 +1,443 @@
+# iterparse -- event-driven parsing
+
+cdef class iterparse:
+    """iterparse(self, source, events=("end",), tag=None, \
+                  attribute_defaults=False, dtd_validation=False, \
+                  load_dtd=False, no_network=True, remove_blank_text=False, \
+                  compact=True, resolve_entities='internal', remove_comments=False, \
+                  remove_pis=False, strip_cdata=True, encoding=None, \
+                  html=False, recover=None, huge_tree=False, schema=None, \
+                  chunk_size=32768)
+
+    Incremental parser.
+
+    Parses XML into a tree and generates tuples (event, element) in a
+    SAX-like fashion. ``event`` is any of 'start', 'end', 'start-ns',
+    'end-ns'.
+
+    For 'start' and 'end', ``element`` is the Element that the parser just
+    found opening or closing.  For 'start-ns', it is a tuple (prefix, URI) of
+    a new namespace declaration.  For 'end-ns', it is simply None.  Note that
+    all start and end events are guaranteed to be properly nested.
+
+    The keyword argument ``events`` specifies a sequence of event type names
+    that should be generated.  By default, only 'end' events will be
+    generated.
+
+    The additional ``tag`` argument restricts the 'start' and 'end' events to
+    those elements that match the given tag.  The ``tag`` argument can also be
+    a sequence of tags to allow matching more than one tag.  By default,
+    events are generated for all elements.  Note that the 'start-ns' and
+    'end-ns' events are not impacted by this restriction.
+
+    The other keyword arguments in the constructor are mainly based on the
+    libxml2 parser configuration.  A DTD will also be loaded if validation or
+    attribute default values are requested.
+
+    Available boolean keyword arguments:
+     - attribute_defaults: read default attributes from DTD
+     - dtd_validation: validate (if DTD is available)
+     - load_dtd: use DTD for parsing
+     - no_network: prevent network access for related files
+     - remove_blank_text: discard blank text nodes
+     - remove_comments: discard comments
+     - remove_pis: discard processing instructions
+     - strip_cdata: replace CDATA sections by normal text content (default:
+       True for XML, ignored otherwise)
+     - compact: safe memory for short text content (default: True)
+     - resolve_entities: replace entities by their text value
+       (default: 'internal' only; True before lxml 6.1)
+     - huge_tree: disable security restrictions and support very deep trees
+                  and very long text content (only affects libxml2 2.7+)
+     - html: parse input as HTML (default: XML)
+     - recover: try hard to parse through broken input (default: True for HTML,
+                False otherwise)
+
+    Other keyword arguments:
+     - encoding: override the document encoding
+     - schema: an XMLSchema to validate against
+     - chunk_size: the number of bytes to read from the 'source' in one chunk
+                   (default: 32768)
+    """
+    cdef _FeedParser _parser
+    cdef object _tag
+    cdef object _events
+    cdef readonly object root
+    cdef object _source
+    cdef object _filename
+    cdef object _error
+    cdef object _chunk_size
+    cdef bint _close_source_after_read
+
+    def __init__(self, source, events=("end",), *, tag=None,
+                 attribute_defaults=False, dtd_validation=False,
+                 load_dtd=False, no_network=True, remove_blank_text=False,
+                 compact=True, resolve_entities='internal', remove_comments=False,
+                 remove_pis=False, strip_cdata=True, encoding=None,
+                 html=False, recover=None, huge_tree=False, collect_ids=True,
+                 XMLSchema schema=None, int chunk_size=32768):
+        if not hasattr(source, 'read'):
+            source = _getFSPathOrObject(source)
+            self._filename = source
+            self._source = open(source, 'rb')
+            self._close_source_after_read = True
+        else:
+            self._filename = _getFilenameForFile(source)
+            self._source = source
+            self._close_source_after_read = False
+
+        if recover is None:
+            recover = html
+
+        if html:
+            # make sure we're not looking for namespaces
+            events = [event for event in events
+                      if event not in ('start-ns', 'end-ns')]
+            parser = HTMLPullParser(
+                events,
+                tag=tag,
+                recover=recover,
+                base_url=self._filename,
+                encoding=encoding,
+                remove_blank_text=remove_blank_text,
+                remove_comments=remove_comments,
+                remove_pis=remove_pis,
+                no_network=no_network,
+                target=None,  # TODO
+                schema=schema,
+                compact=compact)
+        else:
+            parser = XMLPullParser(
+                events,
+                tag=tag,
+                recover=recover,
+                base_url=self._filename,
+                encoding=encoding,
+                attribute_defaults=attribute_defaults,
+                dtd_validation=dtd_validation,
+                load_dtd=load_dtd,
+                no_network=no_network,
+                schema=schema,
+                huge_tree=huge_tree,
+                remove_blank_text=remove_blank_text,
+                resolve_entities=resolve_entities,
+                remove_comments=remove_comments,
+                remove_pis=remove_pis,
+                strip_cdata=strip_cdata,
+                collect_ids=True,
+                target=None,  # TODO
+                compact=compact)
+
+        self._chunk_size = chunk_size
+        self._events = parser.read_events()
+        self._parser = parser
+
+    @property
+    def error_log(self):
+        """The error log of the last (or current) parser run.
+        """
+        return self._parser.feed_error_log
+
+    @property
+    def resolvers(self):
+        """The custom resolver registry of the last (or current) parser run.
+        """
+        return self._parser.resolvers
+
+    @property
+    def version(self):
+        """The version of the underlying XML parser."""
+        return self._parser.version
+
+    def set_element_class_lookup(self, ElementClassLookup lookup = None):
+        """set_element_class_lookup(self, lookup = None)
+
+        Set a lookup scheme for element classes generated from this parser.
+
+        Reset it by passing None or nothing.
+        """
+        self._parser.set_element_class_lookup(lookup)
+
+    def makeelement(self, _tag, attrib=None, nsmap=None, **_extra):
+        """makeelement(self, _tag, attrib=None, nsmap=None, **_extra)
+
+        Creates a new element associated with this parser.
+        """
+        self._parser.makeelement(
+            _tag, attrib=None, nsmap=None, **_extra)
+
+    @cython.final
+    cdef _close_source(self):
+        if self._source is None:
+            return
+        if not self._close_source_after_read:
+            self._source = None
+            return
+        try:
+            close = self._source.close
+        except AttributeError:
+            close = None
+        finally:
+            self._source = None
+        if close is not None:
+            close()
+
+    def __iter__(self):
+        return self
+
+    def __next__(self):
+        try:
+            return next(self._events)
+        except StopIteration:
+            pass
+        context = <_SaxParserContext>self._parser._getPushParserContext()
+        if self._source is not None:
+            done = False
+            while not done:
+                try:
+                    done = self._read_more_events(context)
+                    return next(self._events)
+                except StopIteration:
+                    pass  # no events yet
+                except Exception as e:
+                    self._error = e
+                    self._close_source()
+                    try:
+                        return next(self._events)
+                    except StopIteration:
+                        break
+        # nothing left to read or return
+        if self._error is not None:
+            error = self._error
+            self._error = None
+            raise error
+        if (context._validator is not None
+                and not context._validator.isvalid()):
+            _raiseParseError(context._c_ctxt, self._filename,
+                             context._error_log)
+        # no errors => all done
+        raise StopIteration
+
+    @cython.final
+    cdef bint _read_more_events(self, _SaxParserContext context) except -123:
+        data = self._source.read(self._chunk_size)
+        if not isinstance(data, bytes):
+            self._close_source()
+            raise TypeError("reading file objects must return bytes objects")
+        if not data:
+            try:
+                self.root = self._parser.close()
+            finally:
+                self._close_source()
+            return True
+        self._parser.feed(data)
+        return False
+
+
+cdef enum _IterwalkSkipStates:
+    IWSKIP_NEXT_IS_START
+    IWSKIP_SKIP_NEXT
+    IWSKIP_CAN_SKIP
+    IWSKIP_CANNOT_SKIP
+
+
+cdef class iterwalk:
+    """iterwalk(self, element_or_tree, events=("end",), tag=None)
+
+    A tree walker that generates events from an existing tree as if it
+    was parsing XML data with ``iterparse()``.
+
+    Just as for ``iterparse()``, the ``tag`` argument can be a single tag or a
+    sequence of tags.
+
+    After receiving a 'start' or 'start-ns' event, the children and
+    descendants of the current element can be excluded from iteration
+    by calling the ``skip_subtree()`` method.
+    """
+    cdef _MultiTagMatcher _matcher
+    cdef list   _node_stack
+    cdef list   _events
+    cdef object _pop_event
+    cdef object _include_siblings
+    cdef int    _index
+    cdef int    _event_filter
+    cdef _IterwalkSkipStates _skip_state
+
+    def __init__(self, element_or_tree, events=("end",), tag=None):
+        cdef _Element root
+        cdef int ns_count
+        root = _rootNodeOrRaise(element_or_tree)
+        self._event_filter = _buildParseEventFilter(events)
+        if tag is None or tag == '*':
+            self._matcher = None
+        else:
+            self._matcher = _MultiTagMatcher.__new__(_MultiTagMatcher, tag)
+        self._node_stack  = []
+        self._events = []
+        self._pop_event = self._events.pop
+        self._skip_state = IWSKIP_CANNOT_SKIP  # ignore all skip requests by default
+
+        if self._event_filter:
+            self._index = 0
+            if self._matcher is not None and self._event_filter & PARSE_EVENT_FILTER_START:
+                self._matcher.cacheTags(root._doc)
+
+            # When processing an ElementTree, add events for the preceding comments/PIs.
+            if self._event_filter & (PARSE_EVENT_FILTER_COMMENT | PARSE_EVENT_FILTER_PI):
+                if isinstance(element_or_tree, _ElementTree):
+                    self._include_siblings = root
+                    for elem in list(root.itersiblings(preceding=True))[::-1]:
+                        if self._event_filter & PARSE_EVENT_FILTER_COMMENT and elem.tag is Comment:
+                            self._events.append(('comment', elem))
+                        elif self._event_filter & PARSE_EVENT_FILTER_PI and elem.tag is PI:
+                            self._events.append(('pi', elem))
+
+            ns_count = self._start_node(root)
+            self._node_stack.append( (root, ns_count) )
+        else:
+            self._index = -1
+
+    def __iter__(self):
+        return self
+
+    def __next__(self):
+        cdef xmlNode* c_child
+        cdef _Element node
+        cdef _Element next_node
+        cdef int ns_count = 0
+        if self._events:
+            return self._next_event()
+        if self._matcher is not None and self._index >= 0:
+            node = self._node_stack[self._index][0]
+            self._matcher.cacheTags(node._doc)
+
+        # find next node
+        while self._index >= 0:
+            node = self._node_stack[self._index][0]
+
+            if self._skip_state == IWSKIP_SKIP_NEXT:
+                c_child = NULL
+            else:
+                c_child = self._process_non_elements(
+                    node._doc, _findChildForwards(node._c_node, 0))
+            self._skip_state = IWSKIP_CANNOT_SKIP
+
+            while c_child is NULL:
+                # back off through parents
+                self._index -= 1
+                node = self._end_node()
+                if self._index < 0:
+                    break
+                c_child = self._process_non_elements(
+                    node._doc, _nextElement(node._c_node))
+
+            if c_child is not NULL:
+                next_node = _elementFactory(node._doc, c_child)
+                if self._event_filter & (PARSE_EVENT_FILTER_START |
+                                         PARSE_EVENT_FILTER_START_NS):
+                    ns_count = self._start_node(next_node)
+                elif self._event_filter & PARSE_EVENT_FILTER_END_NS:
+                    ns_count = _countNsDefs(next_node._c_node)
+                self._node_stack.append( (next_node, ns_count) )
+                self._index += 1
+            if self._events:
+                return self._next_event()
+
+        if self._include_siblings is not None:
+            node, self._include_siblings = self._include_siblings, None
+            self._process_non_elements(node._doc, _nextElement(node._c_node))
+            if self._events:
+                return self._next_event()
+
+        raise StopIteration
+
+    @cython.final
+    cdef xmlNode* _process_non_elements(self, _Document doc, xmlNode* c_node):
+        while c_node is not NULL and c_node.type != tree.XML_ELEMENT_NODE:
+            if c_node.type == tree.XML_COMMENT_NODE:
+                if self._event_filter & PARSE_EVENT_FILTER_COMMENT:
+                    self._events.append(
+                        ("comment", _elementFactory(doc, c_node)))
+                c_node = _nextElement(c_node)
+            elif c_node.type == tree.XML_PI_NODE:
+                if self._event_filter & PARSE_EVENT_FILTER_PI:
+                    self._events.append(
+                        ("pi", _elementFactory(doc, c_node)))
+                c_node = _nextElement(c_node)
+            else:
+                break
+        return c_node
+
+    @cython.final
+    cdef _next_event(self):
+        if self._skip_state == IWSKIP_NEXT_IS_START:
+            if self._events[0][0] in ('start', 'start-ns'):
+                self._skip_state = IWSKIP_CAN_SKIP
+        return self._pop_event(0)
+
+    def skip_subtree(self):
+        """Prevent descending into the current subtree.
+        Instead, the next returned event will be the 'end' event of the current element
+        (if included), ignoring any children or descendants.
+
+        This has no effect right after an 'end' or 'end-ns' event.
+        """
+        if self._skip_state == IWSKIP_CAN_SKIP:
+            self._skip_state = IWSKIP_SKIP_NEXT
+
+    @cython.final
+    cdef int _start_node(self, _Element node) except -1:
+        cdef int ns_count
+        if self._event_filter & PARSE_EVENT_FILTER_START_NS:
+            ns_count = _appendStartNsEvents(node._c_node, self._events)
+            if self._events:
+                self._skip_state = IWSKIP_NEXT_IS_START
+        elif self._event_filter & PARSE_EVENT_FILTER_END_NS:
+            ns_count = _countNsDefs(node._c_node)
+        else:
+            ns_count = 0
+        if self._event_filter & PARSE_EVENT_FILTER_START:
+            if self._matcher is None or self._matcher.matches(node._c_node):
+                self._events.append( ("start", node) )
+                self._skip_state = IWSKIP_NEXT_IS_START
+        return ns_count
+
+    @cython.final
+    cdef _Element _end_node(self):
+        cdef _Element node
+        cdef int i, ns_count
+        node, ns_count = self._node_stack.pop()
+        if self._event_filter & PARSE_EVENT_FILTER_END:
+            if self._matcher is None or self._matcher.matches(node._c_node):
+                self._events.append( ("end", node) )
+        if self._event_filter & PARSE_EVENT_FILTER_END_NS and ns_count:
+            event = ("end-ns", None)
+            for i in range(ns_count):
+                self._events.append(event)
+        return node
+
+
+cdef int _countNsDefs(xmlNode* c_node) noexcept:
+    cdef xmlNs* c_ns
+    cdef int count
+    count = 0
+    c_ns = c_node.nsDef
+    while c_ns is not NULL:
+        count += (c_ns.href is not NULL)
+        c_ns = c_ns.next
+    return count
+
+
+cdef int _appendStartNsEvents(xmlNode* c_node, list event_list) except -1:
+    cdef xmlNs* c_ns
+    cdef int count
+    count = 0
+    c_ns = c_node.nsDef
+    while c_ns is not NULL:
+        if c_ns.href:
+            ns_tuple = (funicodeOrEmpty(c_ns.prefix),
+                        funicode(c_ns.href))
+            event_list.append( ("start-ns", ns_tuple) )
+            count += 1
+        c_ns = c_ns.next
+    return count

.venv/lib/python3.12/site-packages/lxml/lxml.etree.h

@@ -0,0 +1,244 @@
+/* Generated by Cython 3.2.9 */
+
+#ifndef __PYX_HAVE__lxml__etree
+#define __PYX_HAVE__lxml__etree
+
+#include "Python.h"
+struct LxmlDocument;
+struct LxmlElement;
+struct LxmlElementTree;
+struct LxmlElementTagMatcher;
+struct LxmlElementIterator;
+struct LxmlElementBase;
+struct LxmlElementClassLookup;
+struct LxmlFallbackElementClassLookup;
+
+/* "lxml/etree.pyx":456
+ * 
+ * # type of a function that steps from node to node
+ * ctypedef public xmlNode* (*_node_to_node_function)(xmlNode*)             # <<<<<<<<<<<<<<
+ * 
+ * 
+*/
+typedef xmlNode *(*_node_to_node_function)(xmlNode *);
+
+/* "lxml/etree.pyx":470
+ * # Public Python API
+ * 
+ * @cython.final             # <<<<<<<<<<<<<<
+ * @cython.freelist(8)
+ * cdef public class _Document [ type LxmlDocumentType, object LxmlDocument ]:
+*/
+struct LxmlDocument {
+  PyObject_HEAD
+  struct __pyx_vtabstruct_4lxml_5etree__Document *__pyx_vtab;
+  int _ns_counter;
+  PyObject *_prefix_tail;
+  xmlDoc *_c_doc;
+  struct __pyx_obj_4lxml_5etree__BaseParser *_parser;
+};
+
+/* "lxml/etree.pyx":823
+ * 
+ * 
+ * @cython.no_gc_clear             # <<<<<<<<<<<<<<
+ * cdef public class _Element [ type LxmlElementType, object LxmlElement ]:
+ *     """Element class.
+*/
+struct LxmlElement {
+  PyObject_HEAD
+  struct LxmlDocument *_doc;
+  xmlNode *_c_node;
+  PyObject *_tag;
+};
+
+/* "lxml/etree.pyx":1997
+ * 
+ * 
+ * cdef public class _ElementTree [ type LxmlElementTreeType,             # <<<<<<<<<<<<<<
+ *                                  object LxmlElementTree ]:
+ *     cdef _Document _doc
+*/
+struct LxmlElementTree {
+  PyObject_HEAD
+  struct __pyx_vtabstruct_4lxml_5etree__ElementTree *__pyx_vtab;
+  struct LxmlDocument *_doc;
+  struct LxmlElement *_context_node;
+};
+
+/* "lxml/etree.pyx":2771
+ * 
+ * 
+ * cdef public class _ElementTagMatcher [ object LxmlElementTagMatcher,             # <<<<<<<<<<<<<<
+ *                                        type LxmlElementTagMatcherType ]:
+ *     """
+*/
+struct LxmlElementTagMatcher {
+  PyObject_HEAD
+  struct __pyx_vtabstruct_4lxml_5etree__ElementTagMatcher *__pyx_vtab;
+  PyObject *_pystrings;
+  int _node_type;
+  char *_href;
+  char *_name;
+};
+
+/* "lxml/etree.pyx":2802
+ *                 self._name = NULL
+ * 
+ * cdef public class _ElementIterator(_ElementTagMatcher) [             # <<<<<<<<<<<<<<
+ *     object LxmlElementIterator, type LxmlElementIteratorType ]:
+ *     """
+*/
+struct LxmlElementIterator {
+  struct LxmlElementTagMatcher __pyx_base;
+  struct LxmlElement *_node;
+  _node_to_node_function _next_element;
+};
+
+/* "src/lxml/classlookup.pxi":6
+ * # Custom Element classes
+ * 
+ * cdef public class ElementBase(_Element) [ type LxmlElementBaseType,             # <<<<<<<<<<<<<<
+ *                                           object LxmlElementBase ]:
+ *     """ElementBase(*children, attrib=None, nsmap=None, **_extra)
+*/
+struct LxmlElementBase {
+  struct LxmlElement __pyx_base;
+};
+
+/* "src/lxml/classlookup.pxi":210
+ * # Element class lookup
+ * 
+ * ctypedef public object (*_element_class_lookup_function)(object, _Document, xmlNode*)             # <<<<<<<<<<<<<<
+ * 
+ * # class to store element class lookup functions
+*/
+typedef PyObject *(*_element_class_lookup_function)(PyObject *, struct LxmlDocument *, xmlNode *);
+
+/* "src/lxml/classlookup.pxi":213
+ * 
+ * # class to store element class lookup functions
+ * cdef public class ElementClassLookup [ type LxmlElementClassLookupType,             # <<<<<<<<<<<<<<
+ *                                        object LxmlElementClassLookup ]:
+ *     """ElementClassLookup(self)
+*/
+struct LxmlElementClassLookup {
+  PyObject_HEAD
+  _element_class_lookup_function _lookup_function;
+};
+
+/* "src/lxml/classlookup.pxi":221
+ * 
+ * 
+ * cdef public class FallbackElementClassLookup(ElementClassLookup) \             # <<<<<<<<<<<<<<
+ *          [ type LxmlFallbackElementClassLookupType,
+ *            object LxmlFallbackElementClassLookup ]:
+*/
+struct LxmlFallbackElementClassLookup {
+  struct LxmlElementClassLookup __pyx_base;
+  struct __pyx_vtabstruct_4lxml_5etree_FallbackElementClassLookup *__pyx_vtab;
+  struct LxmlElementClassLookup *fallback;
+  _element_class_lookup_function _fallback_function;
+};
+
+#ifndef __PYX_HAVE_API__lxml__etree
+
+#ifdef CYTHON_EXTERN_C
+    #undef __PYX_EXTERN_C
+    #define __PYX_EXTERN_C CYTHON_EXTERN_C
+#elif defined(__PYX_EXTERN_C)
+    #ifdef _MSC_VER
+    #pragma message ("Please do not define the '__PYX_EXTERN_C' macro externally. Use 'CYTHON_EXTERN_C' instead.")
+    #else
+    #warning Please do not define the '__PYX_EXTERN_C' macro externally. Use 'CYTHON_EXTERN_C' instead.
+    #endif
+#else
+  #ifdef __cplusplus
+    #define __PYX_EXTERN_C extern "C"
+  #else
+    #define __PYX_EXTERN_C extern
+  #endif
+#endif
+
+#ifndef DL_IMPORT
+  #define DL_IMPORT(_T) _T
+#endif
+
+__PYX_EXTERN_C DL_IMPORT(PyTypeObject) LxmlDocumentType;
+__PYX_EXTERN_C DL_IMPORT(PyTypeObject) LxmlElementType;
+__PYX_EXTERN_C DL_IMPORT(PyTypeObject) LxmlElementTreeType;
+__PYX_EXTERN_C DL_IMPORT(PyTypeObject) LxmlElementTagMatcherType;
+__PYX_EXTERN_C DL_IMPORT(PyTypeObject) LxmlElementIteratorType;
+__PYX_EXTERN_C DL_IMPORT(PyTypeObject) LxmlElementBaseType;
+__PYX_EXTERN_C DL_IMPORT(PyTypeObject) LxmlElementClassLookupType;
+__PYX_EXTERN_C DL_IMPORT(PyTypeObject) LxmlFallbackElementClassLookupType;
+
+__PYX_EXTERN_C struct LxmlElement *deepcopyNodeToDocument(struct LxmlDocument *, xmlNode *);
+__PYX_EXTERN_C struct LxmlElementTree *elementTreeFactory(struct LxmlElement *);
+__PYX_EXTERN_C struct LxmlElementTree *newElementTree(struct LxmlElement *, PyObject *);
+__PYX_EXTERN_C struct LxmlElementTree *adoptExternalDocument(xmlDoc *, PyObject *, int);
+__PYX_EXTERN_C struct LxmlElement *elementFactory(struct LxmlDocument *, xmlNode *);
+__PYX_EXTERN_C struct LxmlElement *makeElement(PyObject *, struct LxmlDocument *, PyObject *, PyObject *, PyObject *, PyObject *, PyObject *);
+__PYX_EXTERN_C struct LxmlElement *makeSubElement(struct LxmlElement *, PyObject *, PyObject *, PyObject *, PyObject *, PyObject *);
+__PYX_EXTERN_C void setElementClassLookupFunction(_element_class_lookup_function, PyObject *);
+__PYX_EXTERN_C PyObject *lookupDefaultElementClass(PyObject *, PyObject *, xmlNode *);
+__PYX_EXTERN_C PyObject *lookupNamespaceElementClass(PyObject *, PyObject *, xmlNode *);
+__PYX_EXTERN_C PyObject *callLookupFallback(struct LxmlFallbackElementClassLookup *, struct LxmlDocument *, xmlNode *);
+__PYX_EXTERN_C int tagMatches(xmlNode *, const xmlChar *, const xmlChar *);
+__PYX_EXTERN_C struct LxmlDocument *documentOrRaise(PyObject *);
+__PYX_EXTERN_C struct LxmlElement *rootNodeOrRaise(PyObject *);
+__PYX_EXTERN_C int hasText(xmlNode *);
+__PYX_EXTERN_C int hasTail(xmlNode *);
+__PYX_EXTERN_C PyObject *textOf(xmlNode *);
+__PYX_EXTERN_C PyObject *tailOf(xmlNode *);
+__PYX_EXTERN_C int setNodeText(xmlNode *, PyObject *);
+__PYX_EXTERN_C int setTailText(xmlNode *, PyObject *);
+__PYX_EXTERN_C PyObject *attributeValue(xmlNode *, xmlAttr *);
+__PYX_EXTERN_C PyObject *attributeValueFromNsName(xmlNode *, const xmlChar *, const xmlChar *);
+__PYX_EXTERN_C PyObject *getAttributeValue(struct LxmlElement *, PyObject *, PyObject *);
+__PYX_EXTERN_C PyObject *iterattributes(struct LxmlElement *, int);
+__PYX_EXTERN_C PyObject *collectAttributes(xmlNode *, int);
+__PYX_EXTERN_C int setAttributeValue(struct LxmlElement *, PyObject *, PyObject *);
+__PYX_EXTERN_C int delAttribute(struct LxmlElement *, PyObject *);
+__PYX_EXTERN_C int delAttributeFromNsName(xmlNode *, const xmlChar *, const xmlChar *);
+__PYX_EXTERN_C int hasChild(xmlNode *);
+__PYX_EXTERN_C xmlNode *findChild(xmlNode *, Py_ssize_t);
+__PYX_EXTERN_C xmlNode *findChildForwards(xmlNode *, Py_ssize_t);
+__PYX_EXTERN_C xmlNode *findChildBackwards(xmlNode *, Py_ssize_t);
+__PYX_EXTERN_C xmlNode *nextElement(xmlNode *);
+__PYX_EXTERN_C xmlNode *previousElement(xmlNode *);
+__PYX_EXTERN_C void appendChild(struct LxmlElement *, struct LxmlElement *);
+__PYX_EXTERN_C int appendChildToElement(struct LxmlElement *, struct LxmlElement *);
+__PYX_EXTERN_C PyObject *pyunicode(const xmlChar *);
+__PYX_EXTERN_C PyObject *utf8(PyObject *);
+__PYX_EXTERN_C PyObject *getNsTag(PyObject *);
+__PYX_EXTERN_C PyObject *getNsTagWithEmptyNs(PyObject *);
+__PYX_EXTERN_C PyObject *namespacedName(xmlNode *);
+__PYX_EXTERN_C PyObject *namespacedNameFromNsName(const xmlChar *, const xmlChar *);
+__PYX_EXTERN_C void iteratorStoreNext(struct LxmlElementIterator *, struct LxmlElement *);
+__PYX_EXTERN_C void initTagMatch(struct LxmlElementTagMatcher *, PyObject *);
+__PYX_EXTERN_C xmlNs *findOrBuildNodeNsPrefix(struct LxmlDocument *, xmlNode *, const xmlChar *, const xmlChar *);
+
+#endif /* !__PYX_HAVE_API__lxml__etree */
+
+/* WARNING: the interface of the module init function changed in CPython 3.5. */
+/* It now returns a PyModuleDef instance instead of a PyModule instance. */
+
+/* WARNING: Use PyImport_AppendInittab("etree", PyInit_etree) instead of calling PyInit_etree directly from Python 3.5 */
+PyMODINIT_FUNC PyInit_etree(void);
+
+#if PY_VERSION_HEX >= 0x03050000 && (defined(__GNUC__) || defined(__clang__) || defined(_MSC_VER) || (defined(__cplusplus) && __cplusplus >= 201402L))
+#if defined(__cplusplus) && __cplusplus >= 201402L
+[[deprecated("Use PyImport_AppendInittab(\"etree\", PyInit_etree) instead of calling PyInit_etree directly.")]] inline
+#elif defined(__GNUC__) || defined(__clang__)
+__attribute__ ((__deprecated__("Use PyImport_AppendInittab(\"etree\", PyInit_etree) instead of calling PyInit_etree directly."), __unused__)) __inline__
+#elif defined(_MSC_VER)
+__declspec(deprecated("Use PyImport_AppendInittab(\"etree\", PyInit_etree) instead of calling PyInit_etree directly.")) __inline
+#endif
+static PyObject* __PYX_WARN_IF_PyInit_etree_INIT_CALLED(PyObject* res) {
+  return res;
+}
+#define PyInit_etree() __PYX_WARN_IF_PyInit_etree_INIT_CALLED(PyInit_etree())
+#endif
+
+#endif /* !__PYX_HAVE__lxml__etree */

.venv/lib/python3.12/site-packages/lxml/lxml.etree_api.h

@@ -0,0 +1,214 @@
+/* Generated by Cython 3.2.9 */
+
+#ifndef __PYX_HAVE_API__lxml__etree
+#define __PYX_HAVE_API__lxml__etree
+#ifdef __MINGW64__
+#define MS_WIN64
+#endif
+#include "Python.h"
+#include "lxml.etree.h"
+
+static struct LxmlElement *(*__pyx_api_f_4lxml_5etree_deepcopyNodeToDocument)(struct LxmlDocument *, xmlNode *) = 0;
+#define deepcopyNodeToDocument __pyx_api_f_4lxml_5etree_deepcopyNodeToDocument
+static struct LxmlElementTree *(*__pyx_api_f_4lxml_5etree_elementTreeFactory)(struct LxmlElement *) = 0;
+#define elementTreeFactory __pyx_api_f_4lxml_5etree_elementTreeFactory
+static struct LxmlElementTree *(*__pyx_api_f_4lxml_5etree_newElementTree)(struct LxmlElement *, PyObject *) = 0;
+#define newElementTree __pyx_api_f_4lxml_5etree_newElementTree
+static struct LxmlElementTree *(*__pyx_api_f_4lxml_5etree_adoptExternalDocument)(xmlDoc *, PyObject *, int) = 0;
+#define adoptExternalDocument __pyx_api_f_4lxml_5etree_adoptExternalDocument
+static struct LxmlElement *(*__pyx_api_f_4lxml_5etree_elementFactory)(struct LxmlDocument *, xmlNode *) = 0;
+#define elementFactory __pyx_api_f_4lxml_5etree_elementFactory
+static struct LxmlElement *(*__pyx_api_f_4lxml_5etree_makeElement)(PyObject *, struct LxmlDocument *, PyObject *, PyObject *, PyObject *, PyObject *, PyObject *) = 0;
+#define makeElement __pyx_api_f_4lxml_5etree_makeElement
+static struct LxmlElement *(*__pyx_api_f_4lxml_5etree_makeSubElement)(struct LxmlElement *, PyObject *, PyObject *, PyObject *, PyObject *, PyObject *) = 0;
+#define makeSubElement __pyx_api_f_4lxml_5etree_makeSubElement
+static void (*__pyx_api_f_4lxml_5etree_setElementClassLookupFunction)(_element_class_lookup_function, PyObject *) = 0;
+#define setElementClassLookupFunction __pyx_api_f_4lxml_5etree_setElementClassLookupFunction
+static PyObject *(*__pyx_api_f_4lxml_5etree_lookupDefaultElementClass)(PyObject *, PyObject *, xmlNode *) = 0;
+#define lookupDefaultElementClass __pyx_api_f_4lxml_5etree_lookupDefaultElementClass
+static PyObject *(*__pyx_api_f_4lxml_5etree_lookupNamespaceElementClass)(PyObject *, PyObject *, xmlNode *) = 0;
+#define lookupNamespaceElementClass __pyx_api_f_4lxml_5etree_lookupNamespaceElementClass
+static PyObject *(*__pyx_api_f_4lxml_5etree_callLookupFallback)(struct LxmlFallbackElementClassLookup *, struct LxmlDocument *, xmlNode *) = 0;
+#define callLookupFallback __pyx_api_f_4lxml_5etree_callLookupFallback
+static int (*__pyx_api_f_4lxml_5etree_tagMatches)(xmlNode *, const xmlChar *, const xmlChar *) = 0;
+#define tagMatches __pyx_api_f_4lxml_5etree_tagMatches
+static struct LxmlDocument *(*__pyx_api_f_4lxml_5etree_documentOrRaise)(PyObject *) = 0;
+#define documentOrRaise __pyx_api_f_4lxml_5etree_documentOrRaise
+static struct LxmlElement *(*__pyx_api_f_4lxml_5etree_rootNodeOrRaise)(PyObject *) = 0;
+#define rootNodeOrRaise __pyx_api_f_4lxml_5etree_rootNodeOrRaise
+static int (*__pyx_api_f_4lxml_5etree_hasText)(xmlNode *) = 0;
+#define hasText __pyx_api_f_4lxml_5etree_hasText
+static int (*__pyx_api_f_4lxml_5etree_hasTail)(xmlNode *) = 0;
+#define hasTail __pyx_api_f_4lxml_5etree_hasTail
+static PyObject *(*__pyx_api_f_4lxml_5etree_textOf)(xmlNode *) = 0;
+#define textOf __pyx_api_f_4lxml_5etree_textOf
+static PyObject *(*__pyx_api_f_4lxml_5etree_tailOf)(xmlNode *) = 0;
+#define tailOf __pyx_api_f_4lxml_5etree_tailOf
+static int (*__pyx_api_f_4lxml_5etree_setNodeText)(xmlNode *, PyObject *) = 0;
+#define setNodeText __pyx_api_f_4lxml_5etree_setNodeText
+static int (*__pyx_api_f_4lxml_5etree_setTailText)(xmlNode *, PyObject *) = 0;
+#define setTailText __pyx_api_f_4lxml_5etree_setTailText
+static PyObject *(*__pyx_api_f_4lxml_5etree_attributeValue)(xmlNode *, xmlAttr *) = 0;
+#define attributeValue __pyx_api_f_4lxml_5etree_attributeValue
+static PyObject *(*__pyx_api_f_4lxml_5etree_attributeValueFromNsName)(xmlNode *, const xmlChar *, const xmlChar *) = 0;
+#define attributeValueFromNsName __pyx_api_f_4lxml_5etree_attributeValueFromNsName
+static PyObject *(*__pyx_api_f_4lxml_5etree_getAttributeValue)(struct LxmlElement *, PyObject *, PyObject *) = 0;
+#define getAttributeValue __pyx_api_f_4lxml_5etree_getAttributeValue
+static PyObject *(*__pyx_api_f_4lxml_5etree_iterattributes)(struct LxmlElement *, int) = 0;
+#define iterattributes __pyx_api_f_4lxml_5etree_iterattributes
+static PyObject *(*__pyx_api_f_4lxml_5etree_collectAttributes)(xmlNode *, int) = 0;
+#define collectAttributes __pyx_api_f_4lxml_5etree_collectAttributes
+static int (*__pyx_api_f_4lxml_5etree_setAttributeValue)(struct LxmlElement *, PyObject *, PyObject *) = 0;
+#define setAttributeValue __pyx_api_f_4lxml_5etree_setAttributeValue
+static int (*__pyx_api_f_4lxml_5etree_delAttribute)(struct LxmlElement *, PyObject *) = 0;
+#define delAttribute __pyx_api_f_4lxml_5etree_delAttribute
+static int (*__pyx_api_f_4lxml_5etree_delAttributeFromNsName)(xmlNode *, const xmlChar *, const xmlChar *) = 0;
+#define delAttributeFromNsName __pyx_api_f_4lxml_5etree_delAttributeFromNsName
+static int (*__pyx_api_f_4lxml_5etree_hasChild)(xmlNode *) = 0;
+#define hasChild __pyx_api_f_4lxml_5etree_hasChild
+static xmlNode *(*__pyx_api_f_4lxml_5etree_findChild)(xmlNode *, Py_ssize_t) = 0;
+#define findChild __pyx_api_f_4lxml_5etree_findChild
+static xmlNode *(*__pyx_api_f_4lxml_5etree_findChildForwards)(xmlNode *, Py_ssize_t) = 0;
+#define findChildForwards __pyx_api_f_4lxml_5etree_findChildForwards
+static xmlNode *(*__pyx_api_f_4lxml_5etree_findChildBackwards)(xmlNode *, Py_ssize_t) = 0;
+#define findChildBackwards __pyx_api_f_4lxml_5etree_findChildBackwards
+static xmlNode *(*__pyx_api_f_4lxml_5etree_nextElement)(xmlNode *) = 0;
+#define nextElement __pyx_api_f_4lxml_5etree_nextElement
+static xmlNode *(*__pyx_api_f_4lxml_5etree_previousElement)(xmlNode *) = 0;
+#define previousElement __pyx_api_f_4lxml_5etree_previousElement
+static void (*__pyx_api_f_4lxml_5etree_appendChild)(struct LxmlElement *, struct LxmlElement *) = 0;
+#define appendChild __pyx_api_f_4lxml_5etree_appendChild
+static int (*__pyx_api_f_4lxml_5etree_appendChildToElement)(struct LxmlElement *, struct LxmlElement *) = 0;
+#define appendChildToElement __pyx_api_f_4lxml_5etree_appendChildToElement
+static PyObject *(*__pyx_api_f_4lxml_5etree_pyunicode)(const xmlChar *) = 0;
+#define pyunicode __pyx_api_f_4lxml_5etree_pyunicode
+static PyObject *(*__pyx_api_f_4lxml_5etree_utf8)(PyObject *) = 0;
+#define utf8 __pyx_api_f_4lxml_5etree_utf8
+static PyObject *(*__pyx_api_f_4lxml_5etree_getNsTag)(PyObject *) = 0;
+#define getNsTag __pyx_api_f_4lxml_5etree_getNsTag
+static PyObject *(*__pyx_api_f_4lxml_5etree_getNsTagWithEmptyNs)(PyObject *) = 0;
+#define getNsTagWithEmptyNs __pyx_api_f_4lxml_5etree_getNsTagWithEmptyNs
+static PyObject *(*__pyx_api_f_4lxml_5etree_namespacedName)(xmlNode *) = 0;
+#define namespacedName __pyx_api_f_4lxml_5etree_namespacedName
+static PyObject *(*__pyx_api_f_4lxml_5etree_namespacedNameFromNsName)(const xmlChar *, const xmlChar *) = 0;
+#define namespacedNameFromNsName __pyx_api_f_4lxml_5etree_namespacedNameFromNsName
+static void (*__pyx_api_f_4lxml_5etree_iteratorStoreNext)(struct LxmlElementIterator *, struct LxmlElement *) = 0;
+#define iteratorStoreNext __pyx_api_f_4lxml_5etree_iteratorStoreNext
+static void (*__pyx_api_f_4lxml_5etree_initTagMatch)(struct LxmlElementTagMatcher *, PyObject *) = 0;
+#define initTagMatch __pyx_api_f_4lxml_5etree_initTagMatch
+static xmlNs *(*__pyx_api_f_4lxml_5etree_findOrBuildNodeNsPrefix)(struct LxmlDocument *, xmlNode *, const xmlChar *, const xmlChar *) = 0;
+#define findOrBuildNodeNsPrefix __pyx_api_f_4lxml_5etree_findOrBuildNodeNsPrefix
+static int __Pyx_ImportFunction_3_2_9(PyObject *module, const char *funcname, void (**f)(void), const char *sig);
+
+#ifndef __PYX_HAVE_RT_ImportFromPxd_3_2_9
+#define __PYX_HAVE_RT_ImportFromPxd_3_2_9
+static int __Pyx_ImportFromPxd_3_2_9(PyObject *module, const char *name, void **p, const char *sig, const char *what) {
+    PyObject *d = 0;
+    PyObject *cobj = 0;
+    d = PyObject_GetAttrString(module, "__pyx_capi__");
+    if (!d)
+        goto bad;
+#if (defined(Py_LIMITED_API) && Py_LIMITED_API >= 0x030d0000) || (!defined(Py_LIMITED_API) && PY_VERSION_HEX >= 0x030d0000)
+    PyDict_GetItemStringRef(d, name, &cobj);
+#else
+    cobj = PyDict_GetItemString(d, name);
+    Py_XINCREF(cobj);
+#endif
+    if (!cobj) {
+        PyErr_Format(PyExc_ImportError,
+            "%.200s does not export expected C %.8s %.200s",
+                PyModule_GetName(module), what, name);
+        goto bad;
+    }
+    if (!PyCapsule_IsValid(cobj, sig)) {
+        PyErr_Format(PyExc_TypeError,
+            "C %.8s %.200s.%.200s has wrong signature (expected %.500s, got %.500s)",
+             what, PyModule_GetName(module), name, sig, PyCapsule_GetName(cobj));
+        goto bad;
+    }
+    *p = PyCapsule_GetPointer(cobj, sig);
+    if (!(*p))
+        goto bad;
+    Py_DECREF(d);
+    Py_DECREF(cobj);
+    return 0;
+bad:
+    Py_XDECREF(d);
+    Py_XDECREF(cobj);
+    return -1;
+}
+#endif
+
+#ifndef __PYX_HAVE_RT_ImportFunction_3_2_9
+#define __PYX_HAVE_RT_ImportFunction_3_2_9
+static int __Pyx_ImportFunction_3_2_9(PyObject *module, const char *funcname, void (**f)(void), const char *sig) {
+    union {
+        void (*fp)(void);
+        void *p;
+    } tmp;
+    int result = __Pyx_ImportFromPxd_3_2_9(module, funcname, &tmp.p, sig, "function");
+    if (result == 0) {
+        *f = tmp.fp;
+    }
+    return result;
+}
+#endif
+
+
+static int import_lxml__etree(void) {
+  PyObject *module = 0;
+  module = PyImport_ImportModule("lxml.etree");
+  if (!module) goto bad;
+  if (__Pyx_ImportFunction_3_2_9(module, "deepcopyNodeToDocument", (void (**)(void))&__pyx_api_f_4lxml_5etree_deepcopyNodeToDocument, "struct LxmlElement *(struct LxmlDocument *, xmlNode *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_2_9(module, "elementTreeFactory", (void (**)(void))&__pyx_api_f_4lxml_5etree_elementTreeFactory, "struct LxmlElementTree *(struct LxmlElement *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_2_9(module, "newElementTree", (void (**)(void))&__pyx_api_f_4lxml_5etree_newElementTree, "struct LxmlElementTree *(struct LxmlElement *, PyObject *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_2_9(module, "adoptExternalDocument", (void (**)(void))&__pyx_api_f_4lxml_5etree_adoptExternalDocument, "struct LxmlElementTree *(xmlDoc *, PyObject *, int)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_2_9(module, "elementFactory", (void (**)(void))&__pyx_api_f_4lxml_5etree_elementFactory, "struct LxmlElement *(struct LxmlDocument *, xmlNode *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_2_9(module, "makeElement", (void (**)(void))&__pyx_api_f_4lxml_5etree_makeElement, "struct LxmlElement *(PyObject *, struct LxmlDocument *, PyObject *, PyObject *, PyObject *, PyObject *, PyObject *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_2_9(module, "makeSubElement", (void (**)(void))&__pyx_api_f_4lxml_5etree_makeSubElement, "struct LxmlElement *(struct LxmlElement *, PyObject *, PyObject *, PyObject *, PyObject *, PyObject *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_2_9(module, "setElementClassLookupFunction", (void (**)(void))&__pyx_api_f_4lxml_5etree_setElementClassLookupFunction, "void (_element_class_lookup_function, PyObject *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_2_9(module, "lookupDefaultElementClass", (void (**)(void))&__pyx_api_f_4lxml_5etree_lookupDefaultElementClass, "PyObject *(PyObject *, PyObject *, xmlNode *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_2_9(module, "lookupNamespaceElementClass", (void (**)(void))&__pyx_api_f_4lxml_5etree_lookupNamespaceElementClass, "PyObject *(PyObject *, PyObject *, xmlNode *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_2_9(module, "callLookupFallback", (void (**)(void))&__pyx_api_f_4lxml_5etree_callLookupFallback, "PyObject *(struct LxmlFallbackElementClassLookup *, struct LxmlDocument *, xmlNode *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_2_9(module, "tagMatches", (void (**)(void))&__pyx_api_f_4lxml_5etree_tagMatches, "int (xmlNode *, const xmlChar *, const xmlChar *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_2_9(module, "documentOrRaise", (void (**)(void))&__pyx_api_f_4lxml_5etree_documentOrRaise, "struct LxmlDocument *(PyObject *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_2_9(module, "rootNodeOrRaise", (void (**)(void))&__pyx_api_f_4lxml_5etree_rootNodeOrRaise, "struct LxmlElement *(PyObject *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_2_9(module, "hasText", (void (**)(void))&__pyx_api_f_4lxml_5etree_hasText, "int (xmlNode *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_2_9(module, "hasTail", (void (**)(void))&__pyx_api_f_4lxml_5etree_hasTail, "int (xmlNode *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_2_9(module, "textOf", (void (**)(void))&__pyx_api_f_4lxml_5etree_textOf, "PyObject *(xmlNode *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_2_9(module, "tailOf", (void (**)(void))&__pyx_api_f_4lxml_5etree_tailOf, "PyObject *(xmlNode *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_2_9(module, "setNodeText", (void (**)(void))&__pyx_api_f_4lxml_5etree_setNodeText, "int (xmlNode *, PyObject *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_2_9(module, "setTailText", (void (**)(void))&__pyx_api_f_4lxml_5etree_setTailText, "int (xmlNode *, PyObject *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_2_9(module, "attributeValue", (void (**)(void))&__pyx_api_f_4lxml_5etree_attributeValue, "PyObject *(xmlNode *, xmlAttr *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_2_9(module, "attributeValueFromNsName", (void (**)(void))&__pyx_api_f_4lxml_5etree_attributeValueFromNsName, "PyObject *(xmlNode *, const xmlChar *, const xmlChar *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_2_9(module, "getAttributeValue", (void (**)(void))&__pyx_api_f_4lxml_5etree_getAttributeValue, "PyObject *(struct LxmlElement *, PyObject *, PyObject *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_2_9(module, "iterattributes", (void (**)(void))&__pyx_api_f_4lxml_5etree_iterattributes, "PyObject *(struct LxmlElement *, int)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_2_9(module, "collectAttributes", (void (**)(void))&__pyx_api_f_4lxml_5etree_collectAttributes, "PyObject *(xmlNode *, int)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_2_9(module, "setAttributeValue", (void (**)(void))&__pyx_api_f_4lxml_5etree_setAttributeValue, "int (struct LxmlElement *, PyObject *, PyObject *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_2_9(module, "delAttribute", (void (**)(void))&__pyx_api_f_4lxml_5etree_delAttribute, "int (struct LxmlElement *, PyObject *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_2_9(module, "delAttributeFromNsName", (void (**)(void))&__pyx_api_f_4lxml_5etree_delAttributeFromNsName, "int (xmlNode *, const xmlChar *, const xmlChar *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_2_9(module, "hasChild", (void (**)(void))&__pyx_api_f_4lxml_5etree_hasChild, "int (xmlNode *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_2_9(module, "findChild", (void (**)(void))&__pyx_api_f_4lxml_5etree_findChild, "xmlNode *(xmlNode *, Py_ssize_t)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_2_9(module, "findChildForwards", (void (**)(void))&__pyx_api_f_4lxml_5etree_findChildForwards, "xmlNode *(xmlNode *, Py_ssize_t)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_2_9(module, "findChildBackwards", (void (**)(void))&__pyx_api_f_4lxml_5etree_findChildBackwards, "xmlNode *(xmlNode *, Py_ssize_t)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_2_9(module, "nextElement", (void (**)(void))&__pyx_api_f_4lxml_5etree_nextElement, "xmlNode *(xmlNode *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_2_9(module, "previousElement", (void (**)(void))&__pyx_api_f_4lxml_5etree_previousElement, "xmlNode *(xmlNode *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_2_9(module, "appendChild", (void (**)(void))&__pyx_api_f_4lxml_5etree_appendChild, "void (struct LxmlElement *, struct LxmlElement *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_2_9(module, "appendChildToElement", (void (**)(void))&__pyx_api_f_4lxml_5etree_appendChildToElement, "int (struct LxmlElement *, struct LxmlElement *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_2_9(module, "pyunicode", (void (**)(void))&__pyx_api_f_4lxml_5etree_pyunicode, "PyObject *(const xmlChar *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_2_9(module, "utf8", (void (**)(void))&__pyx_api_f_4lxml_5etree_utf8, "PyObject *(PyObject *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_2_9(module, "getNsTag", (void (**)(void))&__pyx_api_f_4lxml_5etree_getNsTag, "PyObject *(PyObject *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_2_9(module, "getNsTagWithEmptyNs", (void (**)(void))&__pyx_api_f_4lxml_5etree_getNsTagWithEmptyNs, "PyObject *(PyObject *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_2_9(module, "namespacedName", (void (**)(void))&__pyx_api_f_4lxml_5etree_namespacedName, "PyObject *(xmlNode *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_2_9(module, "namespacedNameFromNsName", (void (**)(void))&__pyx_api_f_4lxml_5etree_namespacedNameFromNsName, "PyObject *(const xmlChar *, const xmlChar *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_2_9(module, "iteratorStoreNext", (void (**)(void))&__pyx_api_f_4lxml_5etree_iteratorStoreNext, "void (struct LxmlElementIterator *, struct LxmlElement *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_2_9(module, "initTagMatch", (void (**)(void))&__pyx_api_f_4lxml_5etree_initTagMatch, "void (struct LxmlElementTagMatcher *, PyObject *)") < 0) goto bad;
+  if (__Pyx_ImportFunction_3_2_9(module, "findOrBuildNodeNsPrefix", (void (**)(void))&__pyx_api_f_4lxml_5etree_findOrBuildNodeNsPrefix, "xmlNs *(struct LxmlDocument *, xmlNode *, const xmlChar *, const xmlChar *)") < 0) goto bad;
+  Py_DECREF(module); module = 0;
+  return 0;
+  bad:
+  Py_XDECREF(module);
+  return -1;
+}
+
+#endif /* !__PYX_HAVE_API__lxml__etree */

.venv/lib/python3.12/site-packages/lxml/nsclasses.pxi

@@ -0,0 +1,281 @@
+# module-level API for namespace implementations
+
+cdef class LxmlRegistryError(LxmlError):
+    """Base class of lxml registry errors.
+    """
+
+cdef class NamespaceRegistryError(LxmlRegistryError):
+    """Error registering a namespace extension.
+    """
+
+
+@cython.internal
+cdef class _NamespaceRegistry:
+    "Dictionary-like namespace registry"
+    cdef object _ns_uri
+    cdef bytes _ns_uri_utf
+    cdef dict _entries
+    cdef char* _c_ns_uri_utf
+    def __cinit__(self, ns_uri):
+        self._ns_uri = ns_uri
+        if ns_uri is None:
+            self._ns_uri_utf = None
+            self._c_ns_uri_utf = NULL
+        else:
+            self._ns_uri_utf = _utf8(ns_uri)
+            self._c_ns_uri_utf = _cstr(self._ns_uri_utf)
+        self._entries = {}
+
+    def update(self, class_dict_iterable):
+        """update(self, class_dict_iterable)
+
+        Forgivingly update the registry.
+
+        ``class_dict_iterable`` may be a dict or some other iterable
+        that yields (name, value) pairs.
+
+        If a value does not match the required type for this registry,
+        or if the name starts with '_', it will be silently discarded.
+        This allows registrations at the module or class level using
+        vars(), globals() etc."""
+        if hasattr(class_dict_iterable, 'items'):
+            class_dict_iterable = class_dict_iterable.items()
+        for name, item in class_dict_iterable:
+            if (name is None or name[:1] != '_') and callable(item):
+                self[name] = item
+
+    def __getitem__(self, name):
+        if name is not None:
+            name = _utf8(name)
+        return self._get(name)
+
+    def __delitem__(self, name):
+        if name is not None:
+            name = _utf8(name)
+        del self._entries[name]
+
+    cdef object _get(self, object name):
+        cdef python.PyObject* dict_result
+        dict_result = python.PyDict_GetItem(self._entries, name)
+        if dict_result is NULL:
+            raise KeyError, "Name not registered."
+        return <object>dict_result
+
+    cdef object _getForString(self, char* name):
+        cdef python.PyObject* dict_result
+        dict_result = python.PyDict_GetItem(self._entries, name)
+        if dict_result is NULL:
+            raise KeyError, "Name not registered."
+        return <object>dict_result
+
+    def __iter__(self):
+        return iter(self._entries)
+
+    def items(self):
+        return list(self._entries.items())
+
+    def iteritems(self):
+        return iter(self._entries.items())
+
+    def clear(self):
+        self._entries.clear()
+
+    def __call__(self, obj):
+        # Usage as decorator:
+        #   ns = lookup.get_namespace("...")
+        #   @ns('abc')
+        #   class element(ElementBase): pass
+        #
+        #   @ns
+        #   class elementname(ElementBase): pass
+
+        if obj is None or python._isString(obj):
+            # @ns(None) or @ns('tag')
+            return partial(self.__deco, obj)
+        # plain @ns decorator
+        self[obj.__name__] = obj
+        return obj
+
+    def __deco(self, name, obj):
+        self[name] = obj
+        return obj
+
+
+@cython.final
+@cython.internal
+cdef class _ClassNamespaceRegistry(_NamespaceRegistry):
+    "Dictionary-like registry for namespace implementation classes"
+    def __setitem__(self, name, item):
+        if not isinstance(item, type) or not issubclass(item, ElementBase):
+            raise NamespaceRegistryError, \
+                "Registered element classes must be subtypes of ElementBase"
+        if name is not None:
+            name = _utf8(name)
+        self._entries[name] = item
+
+    def __repr__(self):
+        return "Namespace(%r)" % self._ns_uri
+
+
+cdef class ElementNamespaceClassLookup(FallbackElementClassLookup):
+    """ElementNamespaceClassLookup(self, fallback=None)
+
+    Element class lookup scheme that searches the Element class in the
+    Namespace registry.
+
+    Usage:
+
+    >>> lookup = ElementNamespaceClassLookup()
+    >>> ns_elements = lookup.get_namespace("http://schema.org/Movie")
+
+    >>> @ns_elements
+    ... class movie(ElementBase):
+    ...     "Element implementation for 'movie' tag (using class name) in schema namespace."
+
+    >>> @ns_elements("movie")
+    ... class MovieElement(ElementBase):
+    ...     "Element implementation for 'movie' tag (explicit tag name) in schema namespace."
+    """
+    cdef dict _namespace_registries
+    def __cinit__(self):
+        self._namespace_registries = {}
+
+    def __init__(self, ElementClassLookup fallback=None):
+        FallbackElementClassLookup.__init__(self, fallback)
+        self._lookup_function = _find_nselement_class
+
+    def get_namespace(self, ns_uri):
+        """get_namespace(self, ns_uri)
+
+        Retrieve the namespace object associated with the given URI.
+        Pass None for the empty namespace.
+
+        Creates a new namespace object if it does not yet exist."""
+        if ns_uri:
+            ns_utf = _utf8(ns_uri)
+        else:
+            ns_utf = None
+        try:
+            return self._namespace_registries[ns_utf]
+        except KeyError:
+            registry = self._namespace_registries[ns_utf] = \
+                       _ClassNamespaceRegistry(ns_uri)
+            return registry
+
+cdef object _find_nselement_class(state, _Document doc, xmlNode* c_node):
+    cdef python.PyObject* dict_result
+    cdef ElementNamespaceClassLookup lookup
+    cdef _NamespaceRegistry registry
+    if state is None:
+        return _lookupDefaultElementClass(None, doc, c_node)
+
+    lookup = <ElementNamespaceClassLookup>state
+    if c_node.type != tree.XML_ELEMENT_NODE:
+        return _callLookupFallback(lookup, doc, c_node)
+
+    c_namespace_utf = _getNs(c_node)
+    if c_namespace_utf is not NULL:
+        dict_result = python.PyDict_GetItem(
+            lookup._namespace_registries, <unsigned char*>c_namespace_utf)
+    else:
+        dict_result = python.PyDict_GetItem(
+            lookup._namespace_registries, None)
+    if dict_result is not NULL:
+        registry = <_NamespaceRegistry>dict_result
+        classes = registry._entries
+
+        if c_node.name is not NULL:
+            dict_result = python.PyDict_GetItem(
+                classes, <unsigned char*>c_node.name)
+        else:
+            dict_result = NULL
+
+        if dict_result is NULL:
+            dict_result = python.PyDict_GetItem(classes, None)
+
+        if dict_result is not NULL:
+            return <object>dict_result
+    return _callLookupFallback(lookup, doc, c_node)
+
+
+################################################################################
+# XPath extension functions
+
+cdef dict __FUNCTION_NAMESPACE_REGISTRIES
+__FUNCTION_NAMESPACE_REGISTRIES = {}
+
+def FunctionNamespace(ns_uri):
+    """FunctionNamespace(ns_uri)
+
+    Retrieve the function namespace object associated with the given
+    URI.
+
+    Creates a new one if it does not yet exist. A function namespace
+    can only be used to register extension functions.
+
+    Usage:
+
+    >>> ns_functions = FunctionNamespace("http://schema.org/Movie")
+
+    >>> @ns_functions  # uses function name
+    ... def add2(x):
+    ...     return x + 2
+
+    >>> @ns_functions("add3")  # uses explicit name
+    ... def add_three(x):
+    ...     return x + 3
+    """
+    ns_utf = _utf8(ns_uri) if ns_uri else None
+    try:
+        return __FUNCTION_NAMESPACE_REGISTRIES[ns_utf]
+    except KeyError:
+        registry = __FUNCTION_NAMESPACE_REGISTRIES[ns_utf] = \
+                   _XPathFunctionNamespaceRegistry(ns_uri)
+        return registry
+
+@cython.internal
+cdef class _FunctionNamespaceRegistry(_NamespaceRegistry):
+    def __setitem__(self, name, item):
+        if not callable(item):
+            raise NamespaceRegistryError, \
+                "Registered functions must be callable."
+        if not name:
+            raise ValueError, \
+                "extensions must have non empty names"
+        self._entries[_utf8(name)] = item
+
+    def __repr__(self):
+        return "FunctionNamespace(%r)" % self._ns_uri
+
+@cython.final
+@cython.internal
+cdef class _XPathFunctionNamespaceRegistry(_FunctionNamespaceRegistry):
+    cdef object _prefix
+    cdef bytes _prefix_utf
+
+    property prefix:
+        "Namespace prefix for extension functions."
+        def __del__(self):
+            self._prefix = None # no prefix configured
+            self._prefix_utf = None
+        def __get__(self):
+            if self._prefix is None:
+                return ''
+            else:
+                return self._prefix
+        def __set__(self, prefix):
+            if prefix == '':
+                prefix = None # empty prefix
+            self._prefix_utf = _utf8(prefix) if prefix is not None else None
+            self._prefix = prefix
+
+cdef list _find_all_extension_prefixes():
+    "Internal lookup function to find all function prefixes for XSLT/XPath."
+    cdef _XPathFunctionNamespaceRegistry registry
+    cdef list ns_prefixes = []
+    for registry in __FUNCTION_NAMESPACE_REGISTRIES.itervalues():
+        if registry._prefix_utf is not None:
+            if registry._ns_uri_utf is not None:
+                ns_prefixes.append(
+                    (registry._prefix_utf, registry._ns_uri_utf))
+    return ns_prefixes

.venv/lib/python3.12/site-packages/lxml/objectify.cpython-312-x86_64-linux-gnu.so

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e0bbc24c44024d06c001a5e399143ebac39c5218da976c5a2d8a0b4ea14cb569
+size 2920920

.venv/lib/python3.12/site-packages/lxml/objectify.pyx

@@ -0,0 +1,2148 @@
+# cython: binding=True
+# cython: auto_pickle=False
+# cython: language_level=3
+
+"""
+The ``lxml.objectify`` module implements a Python object API for XML.
+It is based on `lxml.etree`.
+"""
+
+cimport cython
+
+from lxml.includes.etreepublic cimport _Document, _Element, ElementBase, ElementClassLookup
+from lxml.includes.etreepublic cimport elementFactory, import_lxml__etree, textOf, pyunicode
+from lxml.includes.tree cimport const_xmlChar, _xcstr
+from lxml cimport python
+from lxml.includes cimport tree
+
+cimport lxml.includes.etreepublic as cetree
+cimport libc.string as cstring_h   # not to be confused with stdlib 'string'
+from libc.string cimport const_char
+from libc cimport limits
+
+__all__ = ['BoolElement', 'DataElement', 'E', 'Element', 'ElementMaker',
+           'FloatElement', 'IntElement', 'NoneElement',
+           'NumberElement', 'ObjectPath', 'ObjectifiedDataElement',
+           'ObjectifiedElement', 'ObjectifyElementClassLookup',
+           'PYTYPE_ATTRIBUTE', 'PyType', 'StringElement', 'SubElement',
+           'XML', 'annotate', 'deannotate', 'dump', 'enable_recursive_str',
+           'fromstring', 'getRegisteredTypes', 'makeparser', 'parse',
+           'pyannotate', 'pytypename', 'set_default_parser',
+           'set_pytype_attribute_tag', 'xsiannotate']
+
+cdef object etree
+from lxml import etree
+# initialize C-API of lxml.etree
+import_lxml__etree()
+
+__version__ = etree.__version__
+
+cdef object _float_is_inf, _float_is_nan
+from math import isinf as _float_is_inf, isnan as _float_is_nan
+
+cdef object re
+import re
+
+cdef tuple IGNORABLE_ERRORS = (ValueError, TypeError)
+cdef object is_special_method = re.compile('__.*__$').match
+
+
+cdef object _typename(object t):
+    cdef const_char* c_name
+    c_name = python._fqtypename(t)
+    s = cstring_h.strrchr(c_name, c'.')
+    if s is not NULL:
+        c_name = s + 1
+    return pyunicode(<const_xmlChar*>c_name)
+
+
+# namespace/name for "pytype" hint attribute
+cdef object PYTYPE_NAMESPACE
+cdef bytes PYTYPE_NAMESPACE_UTF8
+cdef const_xmlChar* _PYTYPE_NAMESPACE
+
+cdef object PYTYPE_ATTRIBUTE_NAME
+cdef bytes PYTYPE_ATTRIBUTE_NAME_UTF8
+cdef const_xmlChar* _PYTYPE_ATTRIBUTE_NAME
+
+PYTYPE_ATTRIBUTE = None
+
+cdef unicode TREE_PYTYPE_NAME = "TREE"
+
+cdef tuple _unicodeAndUtf8(s):
+    return s, python.PyUnicode_AsUTF8String(s)
+
+def set_pytype_attribute_tag(attribute_tag=None):
+    """set_pytype_attribute_tag(attribute_tag=None)
+    Change name and namespace of the XML attribute that holds Python type
+    information.
+
+    Do not use this unless you know what you are doing.
+
+    Reset by calling without argument.
+
+    Default: "{http://codespeak.net/lxml/objectify/pytype}pytype"
+    """
+    global PYTYPE_ATTRIBUTE, _PYTYPE_NAMESPACE, _PYTYPE_ATTRIBUTE_NAME
+    global PYTYPE_NAMESPACE, PYTYPE_NAMESPACE_UTF8
+    global PYTYPE_ATTRIBUTE_NAME, PYTYPE_ATTRIBUTE_NAME_UTF8
+    if attribute_tag is None:
+        PYTYPE_NAMESPACE, PYTYPE_NAMESPACE_UTF8 = \
+            _unicodeAndUtf8("http://codespeak.net/lxml/objectify/pytype")
+        PYTYPE_ATTRIBUTE_NAME, PYTYPE_ATTRIBUTE_NAME_UTF8 = \
+            _unicodeAndUtf8("pytype")
+    else:
+        PYTYPE_NAMESPACE_UTF8, PYTYPE_ATTRIBUTE_NAME_UTF8 = \
+            cetree.getNsTag(attribute_tag)
+        PYTYPE_NAMESPACE = PYTYPE_NAMESPACE_UTF8.decode('utf8')
+        PYTYPE_ATTRIBUTE_NAME = PYTYPE_ATTRIBUTE_NAME_UTF8.decode('utf8')
+
+    _PYTYPE_NAMESPACE      = PYTYPE_NAMESPACE_UTF8
+    _PYTYPE_ATTRIBUTE_NAME = PYTYPE_ATTRIBUTE_NAME_UTF8
+    PYTYPE_ATTRIBUTE = cetree.namespacedNameFromNsName(
+        _PYTYPE_NAMESPACE, _PYTYPE_ATTRIBUTE_NAME)
+
+set_pytype_attribute_tag()
+
+
+# namespaces for XML Schema
+cdef object XML_SCHEMA_NS, XML_SCHEMA_NS_UTF8
+XML_SCHEMA_NS, XML_SCHEMA_NS_UTF8 = \
+    _unicodeAndUtf8("http://www.w3.org/2001/XMLSchema")
+cdef const_xmlChar* _XML_SCHEMA_NS = _xcstr(XML_SCHEMA_NS_UTF8)
+
+cdef object XML_SCHEMA_INSTANCE_NS, XML_SCHEMA_INSTANCE_NS_UTF8
+XML_SCHEMA_INSTANCE_NS, XML_SCHEMA_INSTANCE_NS_UTF8 = \
+    _unicodeAndUtf8("http://www.w3.org/2001/XMLSchema-instance")
+cdef const_xmlChar* _XML_SCHEMA_INSTANCE_NS = _xcstr(XML_SCHEMA_INSTANCE_NS_UTF8)
+
+cdef object XML_SCHEMA_INSTANCE_NIL_ATTR = "{%s}nil" % XML_SCHEMA_INSTANCE_NS
+cdef object XML_SCHEMA_INSTANCE_TYPE_ATTR = "{%s}type" % XML_SCHEMA_INSTANCE_NS
+
+
+################################################################################
+# Element class for the main API
+
+cdef class ObjectifiedElement(ElementBase):
+    """Main XML Element class.
+
+    Element children are accessed as object attributes.  Multiple children
+    with the same name are available through a list index.  Example::
+
+       >>> root = XML("<root><c1><c2>0</c2><c2>1</c2></c1></root>")
+       >>> second_c2 = root.c1.c2[1]
+       >>> print(second_c2.text)
+       1
+
+    Note that you cannot (and must not) instantiate this class or its
+    subclasses.
+    """
+    def __iter__(self):
+        """Iterate over self and all siblings with the same tag.
+        """
+        parent = self.getparent()
+        if parent is None:
+            return iter([self])
+        return etree.ElementChildIterator(parent, tag=self.tag)
+
+    def __str__(self):
+        if __RECURSIVE_STR:
+            return _dump(self, 0)
+        else:
+            return textOf(self._c_node) or ''
+
+    # pickle support for objectified Element
+    def __reduce__(self):
+        return fromstring, (etree.tostring(self),)
+
+    @property
+    def text(self):
+        return textOf(self._c_node)
+
+    @property
+    def __dict__(self):
+        """A fake implementation for __dict__ to support dir() etc.
+
+        Note that this only considers the first child with a given name.
+        """
+        cdef _Element child
+        cdef dict children
+        c_ns = tree._getNs(self._c_node)
+        tag = "{%s}*" % pyunicode(c_ns) if c_ns is not NULL else None
+        children = {}
+        for child in etree.ElementChildIterator(self, tag=tag):
+            if c_ns is NULL and tree._getNs(child._c_node) is not NULL:
+                continue
+            name = pyunicode(child._c_node.name)
+            if name not in children:
+                children[name] = child
+        return children
+
+    def __len__(self):
+        """Count self and siblings with the same tag.
+        """
+        return _countSiblings(self._c_node)
+
+    def countchildren(self):
+        """countchildren(self)
+
+        Return the number of children of this element, regardless of their
+        name.
+        """
+        # copied from etree
+        cdef Py_ssize_t c
+        cdef tree.xmlNode* c_node
+        c = 0
+        c_node = self._c_node.children
+        while c_node is not NULL:
+            if tree._isElement(c_node):
+                c += 1
+            c_node = c_node.next
+        return c
+
+    def getchildren(self):
+        """getchildren(self)
+
+        Returns a sequence of all direct children.  The elements are
+        returned in document order.
+        """
+        cdef tree.xmlNode* c_node
+        result = []
+        c_node = self._c_node.children
+        while c_node is not NULL:
+            if tree._isElement(c_node):
+                result.append(cetree.elementFactory(self._doc, c_node))
+            c_node = c_node.next
+        return result
+
+    def __getattr__(self, tag):
+        """Return the (first) child with the given tag name.  If no namespace
+        is provided, the child will be looked up in the same one as self.
+        """
+        return _lookupChildOrRaise(self, tag)
+
+    def __setattr__(self, tag, value):
+        """Set the value of the (first) child with the given tag name.  If no
+        namespace is provided, the child will be looked up in the same one as
+        self.
+        """
+        cdef _Element element
+        # properties are looked up /after/ __setattr__, so we must emulate them
+        if tag == 'text' or tag == 'pyval':
+            # read-only !
+            raise TypeError, f"attribute '{tag}' of '{_typename(self)}' objects is not writable"
+        elif tag == 'tail':
+            cetree.setTailText(self._c_node, value)
+            return
+        elif tag == 'tag':
+            ElementBase.tag.__set__(self, value)
+            return
+        elif tag == 'base':
+            ElementBase.base.__set__(self, value)
+            return
+        tag = _buildChildTag(self, tag)
+        element = _lookupChild(self, tag)
+        if element is None:
+            _appendValue(self, tag, value)
+        else:
+            _replaceElement(element, value)
+
+    def __delattr__(self, tag):
+        child = _lookupChildOrRaise(self, tag)
+        self.remove(child)
+
+    def addattr(self, tag, value):
+        """addattr(self, tag, value)
+
+        Add a child value to the element.
+
+        As opposed to append(), it sets a data value, not an element.
+        """
+        _appendValue(self, _buildChildTag(self, tag), value)
+
+    def __getitem__(self, key):
+        """Return a sibling, counting from the first child of the parent.  The
+        method behaves like both a dict and a sequence.
+
+        * If argument is an integer, returns the sibling at that position.
+
+        * If argument is a string, does the same as getattr().  This can be
+          used to provide namespaces for element lookup, or to look up
+          children with special names (``text`` etc.).
+
+        * If argument is a slice object, returns the matching slice.
+        """
+        cdef tree.xmlNode* c_self_node
+        cdef tree.xmlNode* c_parent
+        cdef tree.xmlNode* c_node
+        cdef Py_ssize_t c_index
+        if python._isString(key):
+            return _lookupChildOrRaise(self, key)
+        elif isinstance(key, slice):
+            return list(self)[key]
+        # normal item access
+        c_index = key   # raises TypeError if necessary
+        c_self_node = self._c_node
+        c_parent = c_self_node.parent
+        if c_parent is NULL:
+            if c_index == 0 or c_index == -1:
+                return self
+            raise IndexError, unicode(key)
+        if c_index < 0:
+            c_node = c_parent.last
+        else:
+            c_node = c_parent.children
+        c_node = _findFollowingSibling(
+            c_node, tree._getNs(c_self_node), c_self_node.name, c_index)
+        if c_node is NULL:
+            raise IndexError, unicode(key)
+        return elementFactory(self._doc, c_node)
+
+    def __setitem__(self, key, value):
+        """Set the value of a sibling, counting from the first child of the
+        parent.  Implements key assignment, item assignment and slice
+        assignment.
+
+        * If argument is an integer, sets the sibling at that position.
+
+        * If argument is a string, does the same as setattr().  This is used
+          to provide namespaces for element lookup.
+
+        * If argument is a sequence (list, tuple, etc.), assign the contained
+          items to the siblings.
+        """
+        cdef _Element element
+        cdef tree.xmlNode* c_node
+        if python._isString(key):
+            key = _buildChildTag(self, key)
+            element = _lookupChild(self, key)
+            if element is None:
+                _appendValue(self, key, value)
+            else:
+                _replaceElement(element, value)
+            return
+
+        if self._c_node.parent is NULL:
+            # the 'root[i] = ...' case
+            raise TypeError, "assignment to root element is invalid"
+
+        if isinstance(key, slice):
+            # slice assignment
+            _setSlice(key, self, value)
+        else:
+            # normal index assignment
+            if key < 0:
+                c_node = self._c_node.parent.last
+            else:
+                c_node = self._c_node.parent.children
+            c_node = _findFollowingSibling(
+                c_node, tree._getNs(self._c_node), self._c_node.name, key)
+            if c_node is NULL:
+                raise IndexError, unicode(key)
+            element = elementFactory(self._doc, c_node)
+            _replaceElement(element, value)
+
+    def __delitem__(self, key):
+        parent = self.getparent()
+        if parent is None:
+            raise TypeError, "deleting items not supported by root element"
+        if isinstance(key, slice):
+            # slice deletion
+            del_items = list(self)[key]
+            remove = parent.remove
+            for el in del_items:
+                remove(el)
+        else:
+            # normal index deletion
+            sibling = self.__getitem__(key)
+            parent.remove(sibling)
+
+    def descendantpaths(self, prefix=None):
+        """descendantpaths(self, prefix=None)
+
+        Returns a list of object path expressions for all descendants.
+        """
+        if prefix is not None and not python._isString(prefix):
+            prefix = '.'.join(prefix)
+        return _build_descendant_paths(self._c_node, prefix)
+
+
+cdef inline bint _tagMatches(tree.xmlNode* c_node, const_xmlChar* c_href, const_xmlChar* c_name) noexcept:
+    if c_node.name != c_name:
+        return 0
+    if c_href == NULL:
+        return 1
+    c_node_href = tree._getNs(c_node)
+    if c_node_href == NULL:
+        return c_href[0] == c'\0'
+    return tree.xmlStrcmp(c_node_href, c_href) == 0
+
+
+cdef Py_ssize_t _countSiblings(tree.xmlNode* c_start_node) noexcept:
+    cdef tree.xmlNode* c_node
+    cdef Py_ssize_t count
+    c_tag  = c_start_node.name
+    c_href = tree._getNs(c_start_node)
+    count = 1
+    c_node = c_start_node.next
+    while c_node is not NULL:
+        if c_node.type == tree.XML_ELEMENT_NODE and \
+               _tagMatches(c_node, c_href, c_tag):
+            count += 1
+        c_node = c_node.next
+    c_node = c_start_node.prev
+    while c_node is not NULL:
+        if c_node.type == tree.XML_ELEMENT_NODE and \
+               _tagMatches(c_node, c_href, c_tag):
+            count += 1
+        c_node = c_node.prev
+    return count
+
+cdef tree.xmlNode* _findFollowingSibling(tree.xmlNode* c_node,
+                                         const_xmlChar* href, const_xmlChar* name,
+                                         Py_ssize_t index) noexcept:
+    if index >= 0:
+        next = cetree.nextElement
+    else:
+        index = -1 - index
+        next = cetree.previousElement
+    while c_node is not NULL:
+        if c_node.type == tree.XML_ELEMENT_NODE and \
+               _tagMatches(c_node, href, name):
+            index = index - 1
+            if index < 0:
+                return c_node
+        c_node = next(c_node)
+    return NULL
+
+cdef object _lookupChild(_Element parent, tag):
+    cdef tree.xmlNode* c_result
+    cdef tree.xmlNode* c_node
+    c_node = parent._c_node
+    ns, tag = cetree.getNsTagWithEmptyNs(tag)
+    c_tag_len = len(<bytes> tag)
+    if c_tag_len > limits.INT_MAX:
+        return None
+    c_tag = tree.xmlDictExists(
+        c_node.doc.dict, _xcstr(tag), <int> c_tag_len)
+    if c_tag is NULL:
+        return None # not in the hash map => not in the tree
+    if ns is None:
+        # either inherit ns from parent or use empty (i.e. no) namespace
+        c_href = tree._getNs(c_node) or <const_xmlChar*>''
+    else:
+        c_href = _xcstr(ns)
+    c_result = _findFollowingSibling(c_node.children, c_href, c_tag, 0)
+    if c_result is NULL:
+        return None
+    return elementFactory(parent._doc, c_result)
+
+cdef object _lookupChildOrRaise(_Element parent, tag):
+    element = _lookupChild(parent, tag)
+    if element is None:
+        raise AttributeError, "no such child: " + _buildChildTag(parent, tag)
+    return element
+
+cdef object _buildChildTag(_Element parent, tag):
+    ns, tag = cetree.getNsTag(tag)
+    c_tag = _xcstr(tag)
+    c_href = tree._getNs(parent._c_node) if ns is None else _xcstr(ns)
+    return cetree.namespacedNameFromNsName(c_href, c_tag)
+
+cdef _replaceElement(_Element element, value):
+    cdef _Element new_element
+    if isinstance(value, _Element):
+        # deep copy the new element
+        new_element = cetree.deepcopyNodeToDocument(
+            element._doc, (<_Element>value)._c_node)
+        new_element.tag = element.tag
+    elif isinstance(value, (list, tuple)):
+        element[:] = value
+        return
+    else:
+        new_element = element.makeelement(element.tag)
+        _setElementValue(new_element, value)
+    element.getparent().replace(element, new_element)
+
+cdef _appendValue(_Element parent, tag, value):
+    cdef _Element new_element
+    if isinstance(value, _Element):
+        # deep copy the new element
+        new_element = cetree.deepcopyNodeToDocument(
+            parent._doc, (<_Element>value)._c_node)
+        new_element.tag = tag
+        cetree.appendChildToElement(parent, new_element)
+    elif isinstance(value, (list, tuple)):
+        for item in value:
+            _appendValue(parent, tag, item)
+    else:
+        new_element = cetree.makeElement(
+            tag, parent._doc, None, None, None, None, None)
+        _setElementValue(new_element, value)
+        cetree.appendChildToElement(parent, new_element)
+
+cdef _setElementValue(_Element element, value):
+    if value is None:
+        cetree.setAttributeValue(
+            element, XML_SCHEMA_INSTANCE_NIL_ATTR, "true")
+    elif isinstance(value, _Element):
+        _replaceElement(element, value)
+        return
+    else:
+        cetree.delAttributeFromNsName(
+            element._c_node, _XML_SCHEMA_INSTANCE_NS, <unsigned char*>"nil")
+        if python._isString(value):
+            pytype_name = "str"
+            py_type = <PyType>_PYTYPE_DICT.get(pytype_name)
+        else:
+            pytype_name = _typename(value)
+            py_type = <PyType>_PYTYPE_DICT.get(pytype_name)
+            if py_type is not None:
+                value = py_type.stringify(value)
+            else:
+                value = unicode(value)
+        if py_type is not None:
+            cetree.setAttributeValue(element, PYTYPE_ATTRIBUTE, pytype_name)
+        else:
+            cetree.delAttributeFromNsName(
+                element._c_node, _PYTYPE_NAMESPACE, _PYTYPE_ATTRIBUTE_NAME)
+    cetree.setNodeText(element._c_node, value)
+
+cdef _setSlice(sliceobject, _Element target, items):
+    cdef _Element parent
+    cdef tree.xmlNode* c_node
+    cdef Py_ssize_t c_step, c_start, pos
+    # collect existing slice
+    if (<slice>sliceobject).step is None:
+        c_step = 1
+    else:
+        c_step = (<slice>sliceobject).step
+    if c_step == 0:
+        raise ValueError, "Invalid slice"
+    cdef list del_items = target[sliceobject]
+
+    # collect new values
+    new_items = []
+    tag = target.tag
+    for item in items:
+        if isinstance(item, _Element):
+            # deep copy the new element
+            new_element = cetree.deepcopyNodeToDocument(
+                target._doc, (<_Element>item)._c_node)
+            new_element.tag = tag
+        else:
+            new_element = cetree.makeElement(
+                tag, target._doc, None, None, None, None, None)
+            _setElementValue(new_element, item)
+        new_items.append(new_element)
+
+    # sanity check - raise what a list would raise
+    if c_step != 1 and len(del_items) != len(new_items):
+        raise ValueError, \
+            f"attempt to assign sequence of size {len(new_items)} to extended slice of size {len(del_items)}"
+
+    # replace existing items
+    pos = 0
+    parent = target.getparent()
+    replace = parent.replace
+    while pos < len(new_items) and pos < len(del_items):
+        replace(del_items[pos], new_items[pos])
+        pos += 1
+    # remove leftover items
+    if pos < len(del_items):
+        remove = parent.remove
+        while pos < len(del_items):
+            remove(del_items[pos])
+            pos += 1
+    # append remaining new items
+    if pos < len(new_items):
+        # the sanity check above guarantees (step == 1)
+        if pos > 0:
+            item = new_items[pos-1]
+        else:
+            if (<slice>sliceobject).start > 0:
+                c_node = parent._c_node.children
+            else:
+                c_node = parent._c_node.last
+            c_node = _findFollowingSibling(
+                c_node, tree._getNs(target._c_node), target._c_node.name,
+                (<slice>sliceobject).start - 1)
+            if c_node is NULL:
+                while pos < len(new_items):
+                    cetree.appendChildToElement(parent, new_items[pos])
+                    pos += 1
+                return
+            item = cetree.elementFactory(parent._doc, c_node)
+        while pos < len(new_items):
+            add = item.addnext
+            item = new_items[pos]
+            add(item)
+            pos += 1
+
+################################################################################
+# Data type support in subclasses
+
+cdef class ObjectifiedDataElement(ObjectifiedElement):
+    """This is the base class for all data type Elements.  Subclasses should
+    override the 'pyval' property and possibly the __str__ method.
+    """
+    @property
+    def pyval(self):
+        return textOf(self._c_node)
+
+    def __str__(self):
+        return textOf(self._c_node) or ''
+
+    def __repr__(self):
+        return textOf(self._c_node) or ''
+
+    def _setText(self, s):
+        """For use in subclasses only. Don't use unless you know what you are
+        doing.
+        """
+        cetree.setNodeText(self._c_node, s)
+
+
+cdef class NumberElement(ObjectifiedDataElement):
+    cdef object _parse_value
+
+    def _setValueParser(self, function):
+        """Set the function that parses the Python value from a string.
+
+        Do not use this unless you know what you are doing.
+        """
+        self._parse_value = function
+
+    @property
+    def pyval(self):
+        return _parseNumber(self)
+
+    def __int__(self):
+        return int(_parseNumber(self))
+
+    def __float__(self):
+        return float(_parseNumber(self))
+
+    def __complex__(self):
+        return complex(_parseNumber(self))
+
+    def __str__(self):
+        return unicode(_parseNumber(self))
+
+    def __repr__(self):
+        return repr(_parseNumber(self))
+
+    def __oct__(self):
+        return oct(_parseNumber(self))
+
+    def __hex__(self):
+        return hex(_parseNumber(self))
+
+    def __richcmp__(self, other, int op):
+        return _richcmpPyvals(self, other, op)
+
+    def __hash__(self):
+        return hash(_parseNumber(self))
+
+    def __add__(self, other):
+        return _numericValueOf(self) + _numericValueOf(other)
+
+    def __radd__(self, other):
+        return _numericValueOf(other) + _numericValueOf(self)
+
+    def __sub__(self, other):
+        return _numericValueOf(self) - _numericValueOf(other)
+
+    def __rsub__(self, other):
+        return _numericValueOf(other) - _numericValueOf(self)
+
+    def __mul__(self, other):
+        return _numericValueOf(self) * _numericValueOf(other)
+
+    def __rmul__(self, other):
+        return _numericValueOf(other) * _numericValueOf(self)
+
+    def __div__(self, other):
+        return _numericValueOf(self) / _numericValueOf(other)
+
+    def __rdiv__(self, other):
+        return _numericValueOf(other) / _numericValueOf(self)
+
+    def __truediv__(self, other):
+        return _numericValueOf(self) / _numericValueOf(other)
+
+    def __rtruediv__(self, other):
+        return _numericValueOf(other) / _numericValueOf(self)
+
+    def __floordiv__(self, other):
+        return _numericValueOf(self) // _numericValueOf(other)
+
+    def __rfloordiv__(self, other):
+        return _numericValueOf(other) // _numericValueOf(self)
+
+    def __mod__(self, other):
+        return _numericValueOf(self) % _numericValueOf(other)
+
+    def __rmod__(self, other):
+        return _numericValueOf(other) % _numericValueOf(self)
+
+    def __divmod__(self, other):
+        return divmod(_numericValueOf(self), _numericValueOf(other))
+
+    def __rdivmod__(self, other):
+        return divmod(_numericValueOf(other), _numericValueOf(self))
+
+    def __pow__(self, other, modulo):
+        if modulo is None:
+            return _numericValueOf(self) ** _numericValueOf(other)
+        else:
+            return pow(_numericValueOf(self), _numericValueOf(other), modulo)
+
+    def __rpow__(self, other, modulo):
+        if modulo is None:
+            return _numericValueOf(other) ** _numericValueOf(self)
+        else:
+            return pow(_numericValueOf(other), _numericValueOf(self), modulo)
+
+    def __neg__(self):
+        return - _numericValueOf(self)
+
+    def __pos__(self):
+        return + _numericValueOf(self)
+
+    def __abs__(self):
+        return abs( _numericValueOf(self) )
+
+    def __bool__(self):
+        return bool(_numericValueOf(self))
+
+    def __invert__(self):
+        return ~ _numericValueOf(self)
+
+    def __lshift__(self, other):
+        return _numericValueOf(self) << _numericValueOf(other)
+
+    def __rlshift__(self, other):
+        return _numericValueOf(other) << _numericValueOf(self)
+
+    def __rshift__(self, other):
+        return _numericValueOf(self) >> _numericValueOf(other)
+
+    def __rrshift__(self, other):
+        return _numericValueOf(other) >> _numericValueOf(self)
+
+    def __and__(self, other):
+        return _numericValueOf(self) & _numericValueOf(other)
+
+    def __rand__(self, other):
+        return _numericValueOf(other) & _numericValueOf(self)
+
+    def __or__(self, other):
+        return _numericValueOf(self) | _numericValueOf(other)
+
+    def __ror__(self, other):
+        return _numericValueOf(other) | _numericValueOf(self)
+
+    def __xor__(self, other):
+        return _numericValueOf(self) ^ _numericValueOf(other)
+
+    def __rxor__(self, other):
+        return _numericValueOf(other) ^ _numericValueOf(self)
+
+
+cdef class IntElement(NumberElement):
+    def _init(self):
+        self._parse_value = int
+
+    def __index__(self):
+        return int(_parseNumber(self))
+
+
+cdef class FloatElement(NumberElement):
+    def _init(self):
+        self._parse_value = float
+
+
+cdef class StringElement(ObjectifiedDataElement):
+    """String data class.
+
+    Note that this class does *not* support the sequence protocol of strings:
+    len(), iter(), str_attr[0], str_attr[0:1], etc. are *not* supported.
+    Instead, use the .text attribute to get a 'real' string.
+    """
+    @property
+    def pyval(self):
+        return textOf(self._c_node) or ''
+
+    def __repr__(self):
+        return repr(textOf(self._c_node) or '')
+
+    def strlen(self):
+        text = textOf(self._c_node)
+        if text is None:
+            return 0
+        else:
+            return len(text)
+
+    def __bool__(self):
+        return bool(textOf(self._c_node))
+
+    def __richcmp__(self, other, int op):
+        return _richcmpPyvals(self, other, op)
+
+    def __hash__(self):
+        return hash(textOf(self._c_node) or '')
+
+    def __add__(self, other):
+        text  = _strValueOf(self)
+        other = _strValueOf(other)
+        return text + other
+
+    def __radd__(self, other):
+        text  = _strValueOf(self)
+        other = _strValueOf(other)
+        return other + text
+
+    def __mul__(self, other):
+        if isinstance(self, StringElement):
+            return (textOf((<StringElement>self)._c_node) or '') * _numericValueOf(other)
+        elif isinstance(other, StringElement):
+            return _numericValueOf(self) * (textOf((<StringElement>other)._c_node) or '')
+        else:
+            return NotImplemented
+
+    def __rmul__(self, other):
+        return _numericValueOf(other) * (textOf((<StringElement>self)._c_node) or '')
+
+    def __mod__(self, other):
+        return (_strValueOf(self) or '') % other
+
+    def __int__(self):
+        return int(textOf(self._c_node))
+
+    def __float__(self):
+        return float(textOf(self._c_node))
+
+    def __complex__(self):
+        return complex(textOf(self._c_node))
+
+
+cdef class NoneElement(ObjectifiedDataElement):
+    def __str__(self):
+        return "None"
+
+    def __repr__(self):
+        return "None"
+
+    def __bool__(self):
+        return False
+
+    def __richcmp__(self, other, int op):
+        if other is None or self is None:
+            return python.PyObject_RichCompare(None, None, op)
+        if isinstance(self, NoneElement):
+            return python.PyObject_RichCompare(None, other, op)
+        else:
+            return python.PyObject_RichCompare(self, None, op)
+
+    def __hash__(self):
+        return hash(None)
+
+    @property
+    def pyval(self):
+        return None
+
+
+cdef class BoolElement(IntElement):
+    """Boolean type base on string values: 'true' or 'false'.
+
+    Note that this inherits from IntElement to mimic the behaviour of
+    Python's bool type.
+    """
+    def _init(self):
+        self._parse_value = _parseBool  # wraps as Python callable
+
+    def __bool__(self):
+        return _parseBool(textOf(self._c_node))
+
+    def __int__(self):
+        return 0 + _parseBool(textOf(self._c_node))
+
+    def __float__(self):
+        return 0.0 + _parseBool(textOf(self._c_node))
+
+    def __richcmp__(self, other, int op):
+        return _richcmpPyvals(self, other, op)
+
+    def __hash__(self):
+        return hash(_parseBool(textOf(self._c_node)))
+
+    def __str__(self):
+        return unicode(_parseBool(textOf(self._c_node)))
+
+    def __repr__(self):
+        return repr(_parseBool(textOf(self._c_node)))
+
+    @property
+    def pyval(self):
+        return _parseBool(textOf(self._c_node))
+
+
+cdef _checkBool(s):
+    cdef int value = -1
+    if s is not None:
+        value = __parseBoolAsInt(s)
+    if value == -1:
+        raise ValueError
+
+
+cdef bint _parseBool(s) except -1:
+    cdef int value
+    if s is None:
+        return False
+    value = __parseBoolAsInt(s)
+    if value == -1:
+        raise ValueError, f"Invalid boolean value: '{s}'"
+    return value
+
+
+cdef inline int __parseBoolAsInt(text) except -2:
+    if text == 'false':
+        return 0
+    elif text == 'true':
+        return 1
+    elif text == '0':
+        return 0
+    elif text == '1':
+        return 1
+    return -1
+
+
+cdef object _parseNumber(NumberElement element):
+    return element._parse_value(textOf(element._c_node))
+
+
+cdef enum NumberParserState:
+    NPS_SPACE_PRE = 0
+    NPS_SIGN = 1
+    NPS_DIGITS = 2
+    NPS_POINT_LEAD = 3
+    NPS_POINT = 4
+    NPS_FRACTION = 5
+    NPS_EXP = 6
+    NPS_EXP_SIGN = 7
+    NPS_DIGITS_EXP = 8
+    NPS_SPACE_TAIL = 9
+    NPS_INF1 = 20
+    NPS_INF2 = 21
+    NPS_INF3 = 22
+    NPS_NAN1 = 23
+    NPS_NAN2 = 24
+    NPS_NAN3 = 25
+    NPS_ERROR = 99
+
+
+ctypedef fused bytes_unicode:
+    bytes
+    unicode
+
+
+cdef _checkNumber(bytes_unicode s, bint allow_float):
+    cdef Py_UCS4 c
+    cdef NumberParserState state = NPS_SPACE_PRE
+
+    for c in s:
+        if c in '0123456789':
+            if state in (NPS_DIGITS, NPS_FRACTION, NPS_DIGITS_EXP):
+                pass
+            elif state in (NPS_SPACE_PRE, NPS_SIGN):
+                state = NPS_DIGITS
+            elif state in (NPS_POINT_LEAD, NPS_POINT):
+                state = NPS_FRACTION
+            elif state in (NPS_EXP, NPS_EXP_SIGN):
+                state = NPS_DIGITS_EXP
+            else:
+                state = NPS_ERROR
+        else:
+            if c == '.':
+                if state in (NPS_SPACE_PRE, NPS_SIGN):
+                    state = NPS_POINT_LEAD
+                elif state == NPS_DIGITS:
+                    state = NPS_POINT
+                else:
+                    state = NPS_ERROR
+                if not allow_float:
+                    state = NPS_ERROR
+            elif c in '-+':
+                if state == NPS_SPACE_PRE:
+                    state = NPS_SIGN
+                elif state == NPS_EXP:
+                    state = NPS_EXP_SIGN
+                else:
+                    state = NPS_ERROR
+            elif c == 'E':
+                if state in (NPS_DIGITS, NPS_POINT, NPS_FRACTION):
+                    state = NPS_EXP
+                else:
+                    state = NPS_ERROR
+                if not allow_float:
+                    state = NPS_ERROR
+            # Allow INF and NaN. XMLSchema requires case, we don't, like Python.
+            elif c in 'iI':
+                state = NPS_INF1 if allow_float and state in (NPS_SPACE_PRE, NPS_SIGN) else NPS_ERROR
+            elif c in 'fF':
+                state = NPS_INF3 if state == NPS_INF2 else NPS_ERROR
+            elif c in 'aA':
+                state = NPS_NAN2 if state == NPS_NAN1 else NPS_ERROR
+            elif c in 'nN':
+                # Python also allows [+-]NaN, so let's accept that.
+                if state in (NPS_SPACE_PRE, NPS_SIGN):
+                    state = NPS_NAN1 if allow_float else NPS_ERROR
+                elif state == NPS_NAN2:
+                    state = NPS_NAN3
+                elif state == NPS_INF1:
+                    state = NPS_INF2
+                else:
+                    state = NPS_ERROR
+            # Allow spaces around text values.
+            else:
+                if c.isspace() if (bytes_unicode is unicode) else c in b'\x09\x0a\x0b\x0c\x0d\x20':
+                    if state in (NPS_SPACE_PRE, NPS_SPACE_TAIL):
+                        pass
+                    elif state in (NPS_DIGITS, NPS_POINT, NPS_FRACTION, NPS_DIGITS_EXP, NPS_INF3, NPS_NAN3):
+                        state = NPS_SPACE_TAIL
+                    else:
+                        state = NPS_ERROR
+                else:
+                    state = NPS_ERROR
+
+            if state == NPS_ERROR:
+                break
+
+    if state not in (NPS_DIGITS, NPS_FRACTION, NPS_POINT, NPS_DIGITS_EXP, NPS_INF3, NPS_NAN3, NPS_SPACE_TAIL):
+        raise ValueError
+
+
+cdef _checkInt(s):
+    return _checkNumber(<unicode>s, allow_float=False)
+
+
+cdef _checkFloat(s):
+    return _checkNumber(<unicode>s, allow_float=True)
+
+
+cdef object _strValueOf(obj):
+    if python._isString(obj):
+        return obj
+    if isinstance(obj, _Element):
+        return textOf((<_Element>obj)._c_node) or ''
+    if obj is None:
+        return ''
+    return unicode(obj)
+
+
+cdef object _numericValueOf(obj):
+    if isinstance(obj, NumberElement):
+        return _parseNumber(<NumberElement>obj)
+    try:
+        # not always numeric, but Python will raise the right exception
+        return obj.pyval
+    except AttributeError:
+        pass
+    return obj
+
+
+cdef _richcmpPyvals(left, right, int op):
+    left  = getattr(left,  'pyval', left)
+    right = getattr(right, 'pyval', right)
+    return python.PyObject_RichCompare(left, right, op)
+
+
+################################################################################
+# Python type registry
+
+cdef class PyType:
+    """PyType(self, name, type_check, type_class, stringify=None)
+    User defined type.
+
+    Named type that contains a type check function, a type class that
+    inherits from ObjectifiedDataElement and an optional "stringification"
+    function.  The type check must take a string as argument and raise
+    ValueError or TypeError if it cannot handle the string value.  It may be
+    None in which case it is not considered for type guessing.  For registered
+    named types, the 'stringify' function (or unicode() if None) is used to
+    convert a Python object with type name 'name' to the string representation
+    stored in the XML tree.
+
+    Example::
+
+        PyType('int', int, MyIntClass).register()
+
+    Note that the order in which types are registered matters.  The first
+    matching type will be used.
+    """
+    cdef readonly object name
+    cdef readonly object type_check
+    cdef readonly object stringify
+    cdef object _type
+    cdef list _schema_types
+    def __init__(self, name, type_check, type_class, stringify=None):
+        if isinstance(name, bytes):
+            name = (<bytes>name).decode('ascii')
+        elif not isinstance(name, unicode):
+            raise TypeError, "Type name must be a string"
+        if type_check is not None and not callable(type_check):
+            raise TypeError, "Type check function must be callable (or None)"
+        if name != TREE_PYTYPE_NAME and \
+               not issubclass(type_class, ObjectifiedDataElement):
+            raise TypeError, \
+                "Data classes must inherit from ObjectifiedDataElement"
+        self.name  = name
+        self._type = type_class
+        self.type_check = type_check
+        if stringify is None:
+            stringify = unicode
+        self.stringify = stringify
+        self._schema_types = []
+
+    def __repr__(self):
+        return "PyType(%s, %s)" % (self.name, self._type.__name__)
+
+    def register(self, before=None, after=None):
+        """register(self, before=None, after=None)
+
+        Register the type.
+
+        The additional keyword arguments 'before' and 'after' accept a
+        sequence of type names that must appear before/after the new type in
+        the type list.  If any of them is not currently known, it is simply
+        ignored.  Raises ValueError if the dependencies cannot be fulfilled.
+        """
+        if self.name == TREE_PYTYPE_NAME:
+            raise ValueError, "Cannot register tree type"
+        if self.type_check is not None:
+            for item in _TYPE_CHECKS:
+                if item[0] is self.type_check:
+                    _TYPE_CHECKS.remove(item)
+                    break
+            entry = (self.type_check, self)
+            first_pos = 0
+            last_pos = -1
+            if before or after:
+                if before is None:
+                    before = ()
+                elif after is None:
+                    after = ()
+                for i, (check, pytype) in enumerate(_TYPE_CHECKS):
+                    if last_pos == -1 and pytype.name in before:
+                        last_pos = i
+                    if pytype.name in after:
+                        first_pos = i+1
+            if last_pos == -1:
+                _TYPE_CHECKS.append(entry)
+            elif first_pos > last_pos:
+                raise ValueError, "inconsistent before/after dependencies"
+            else:
+                _TYPE_CHECKS.insert(last_pos, entry)
+
+        _PYTYPE_DICT[self.name] = self
+        for xs_type in self._schema_types:
+            _SCHEMA_TYPE_DICT[xs_type] = self
+
+    def unregister(self):
+        "unregister(self)"
+        if _PYTYPE_DICT.get(self.name) is self:
+            del _PYTYPE_DICT[self.name]
+        for xs_type, pytype in list(_SCHEMA_TYPE_DICT.items()):
+            if pytype is self:
+                del _SCHEMA_TYPE_DICT[xs_type]
+        if self.type_check is None:
+            return
+        try:
+            _TYPE_CHECKS.remove( (self.type_check, self) )
+        except ValueError:
+            pass
+
+    property xmlSchemaTypes:
+        """The list of XML Schema datatypes this Python type maps to.
+
+        Note that this must be set before registering the type!
+        """
+        def __get__(self):
+            return self._schema_types
+        def __set__(self, types):
+            self._schema_types = list(map(unicode, types))
+
+
+cdef dict _PYTYPE_DICT = {}
+cdef dict _SCHEMA_TYPE_DICT = {}
+cdef list _TYPE_CHECKS = []
+
+cdef unicode _xml_bool(value):
+    return "true" if value else "false"
+
+cdef unicode _xml_float(value):
+    if _float_is_inf(value):
+        if value > 0:
+            return "INF"
+        return "-INF"
+    if _float_is_nan(value):
+        return "NaN"
+    return unicode(repr(value))
+
+cdef _pytypename(obj):
+    return "str" if python._isString(obj) else _typename(obj)
+
+def pytypename(obj):
+    """pytypename(obj)
+
+    Find the name of the corresponding PyType for a Python object.
+    """
+    return _pytypename(obj)
+
+cdef _registerPyTypes():
+    pytype = PyType('int', _checkInt, IntElement)  # wraps functions for Python
+    pytype.xmlSchemaTypes = ("integer", "int", "short", "byte", "unsignedShort",
+                             "unsignedByte", "nonPositiveInteger",
+                             "negativeInteger", "long", "nonNegativeInteger",
+                             "unsignedLong", "unsignedInt", "positiveInteger",)
+    pytype.register()
+
+    # 'long' type just for backwards compatibility
+    pytype = PyType('long', None, IntElement)
+    pytype.register()
+
+    pytype = PyType('float', _checkFloat, FloatElement, _xml_float)  # wraps functions for Python
+    pytype.xmlSchemaTypes = ("double", "float")
+    pytype.register()
+
+    pytype = PyType('bool', _checkBool, BoolElement, _xml_bool)  # wraps functions for Python
+    pytype.xmlSchemaTypes = ("boolean",)
+    pytype.register()
+
+    pytype = PyType('str', None, StringElement)
+    pytype.xmlSchemaTypes = ("string", "normalizedString", "token", "language",
+                             "Name", "NCName", "ID", "IDREF", "ENTITY",
+                             "NMTOKEN", )
+    pytype.register()
+
+    # since lxml 2.0
+    pytype = PyType('NoneType', None, NoneElement)
+    pytype.register()
+
+    # backwards compatibility
+    pytype = PyType('none', None, NoneElement)
+    pytype.register()
+
+# non-registered PyType for inner tree elements
+cdef PyType TREE_PYTYPE = PyType(TREE_PYTYPE_NAME, None, ObjectifiedElement)
+
+_registerPyTypes()
+
+def getRegisteredTypes():
+    """getRegisteredTypes()
+
+    Returns a list of the currently registered PyType objects.
+
+    To add a new type, retrieve this list and call unregister() for all
+    entries.  Then add the new type at a suitable position (possibly replacing
+    an existing one) and call register() for all entries.
+
+    This is necessary if the new type interferes with the type check functions
+    of existing ones (normally only int/float/bool) and must the tried before
+    other types.  To add a type that is not yet parsable by the current type
+    check functions, you can simply register() it, which will append it to the
+    end of the type list.
+    """
+    cdef list types = []
+    cdef set known = set()
+    for check, pytype in _TYPE_CHECKS:
+        name = pytype.name
+        if name not in known:
+            known.add(name)
+            types.append(pytype)
+    for pytype in _PYTYPE_DICT.values():
+        name = pytype.name
+        if name not in known:
+            known.add(name)
+            types.append(pytype)
+    return types
+
+cdef PyType _guessPyType(value, PyType defaulttype):
+    if value is None:
+        return None
+    for type_check, tested_pytype in _TYPE_CHECKS:
+        try:
+            type_check(value)
+            return <PyType>tested_pytype
+        except IGNORABLE_ERRORS:
+            # could not be parsed as the specified type => ignore
+            pass
+    return defaulttype
+
+cdef object _guessElementClass(tree.xmlNode* c_node):
+    value = textOf(c_node)
+    if value is None:
+        return None
+    if value == '':
+        return StringElement
+
+    for type_check, pytype in _TYPE_CHECKS:
+        try:
+            type_check(value)
+            return (<PyType>pytype)._type
+        except IGNORABLE_ERRORS:
+            pass
+    return None
+
+################################################################################
+# adapted ElementMaker supports registered PyTypes
+
+@cython.final
+@cython.internal
+cdef class _ObjectifyElementMakerCaller:
+    cdef object _tag
+    cdef object _nsmap
+    cdef object _element_factory
+    cdef bint _annotate
+
+    def __call__(self, *children, **attrib):
+        "__call__(self, *children, **attrib)"
+        cdef _ObjectifyElementMakerCaller elementMaker
+        cdef _Element element
+        cdef _Element childElement
+        cdef bint has_children
+        cdef bint has_string_value
+        if self._element_factory is None:
+            element = _makeElement(self._tag, None, attrib, self._nsmap)
+        else:
+            element = self._element_factory(self._tag, attrib, self._nsmap)
+
+        pytype_name = None
+        has_children = False
+        has_string_value = False
+        for child in children:
+            if child is None:
+                if len(children) == 1:
+                    cetree.setAttributeValue(
+                        element, XML_SCHEMA_INSTANCE_NIL_ATTR, "true")
+            elif python._isString(child):
+                _add_text(element, child)
+                has_string_value = True
+            elif isinstance(child, _Element):
+                cetree.appendChildToElement(element, <_Element>child)
+                has_children = True
+            elif isinstance(child, _ObjectifyElementMakerCaller):
+                elementMaker = <_ObjectifyElementMakerCaller>child
+                if elementMaker._element_factory is None:
+                    cetree.makeSubElement(element, elementMaker._tag,
+                                          None, None, None, None)
+                else:
+                    childElement = elementMaker._element_factory(
+                        elementMaker._tag)
+                    cetree.appendChildToElement(element, childElement)
+                has_children = True
+            elif isinstance(child, dict):
+                for name, value in child.items():
+                    # keyword arguments in attrib take precedence
+                    if name in attrib:
+                        continue
+                    pytype = _PYTYPE_DICT.get(_typename(value))
+                    if pytype is not None:
+                        value = (<PyType>pytype).stringify(value)
+                    elif not python._isString(value):
+                        value = unicode(value)
+                    cetree.setAttributeValue(element, name, value)
+            else:
+                if pytype_name is not None:
+                    # concatenation always makes the result a string
+                    has_string_value = True
+                pytype_name = _typename(child)
+                pytype = _PYTYPE_DICT.get(_typename(child))
+                if pytype is not None:
+                    _add_text(element, (<PyType>pytype).stringify(child))
+                else:
+                    has_string_value = True
+                    child = unicode(child)
+                    _add_text(element, child)
+
+        if self._annotate and not has_children:
+            if has_string_value:
+                cetree.setAttributeValue(element, PYTYPE_ATTRIBUTE, "str")
+            elif pytype_name is not None:
+                cetree.setAttributeValue(element, PYTYPE_ATTRIBUTE, pytype_name)
+
+        return element
+
+cdef _add_text(_Element elem, text):
+    # add text to the tree in construction, either as element text or
+    # tail text, depending on the current tree state
+    cdef tree.xmlNode* c_child
+    c_child = cetree.findChildBackwards(elem._c_node, 0)
+    if c_child is not NULL:
+        old = cetree.tailOf(c_child)
+        if old is not None:
+            text = old + text
+        cetree.setTailText(c_child, text)
+    else:
+        old = cetree.textOf(elem._c_node)
+        if old is not None:
+            text = old + text
+        cetree.setNodeText(elem._c_node, text)
+
+cdef class ElementMaker:
+    """ElementMaker(self, namespace=None, nsmap=None, annotate=True, makeelement=None)
+
+    An ElementMaker that can be used for constructing trees.
+
+    Example::
+
+      >>> M = ElementMaker(annotate=False)
+      >>> attributes = {'class': 'par'}
+      >>> html = M.html( M.body( M.p('hello', attributes, M.br, 'objectify', style="font-weight: bold") ) )
+
+      >>> from lxml.etree import tostring
+      >>> print(tostring(html, method='html').decode('ascii'))
+      <html><body><p style="font-weight: bold" class="par">hello<br>objectify</p></body></html>
+
+    To create tags that are not valid Python identifiers, call the factory
+    directly and pass the tag name as first argument::
+
+      >>> root = M('tricky-tag', 'some text')
+      >>> print(root.tag)
+      tricky-tag
+      >>> print(root.text)
+      some text
+
+    Note that this module has a predefined ElementMaker instance called ``E``.
+    """
+    cdef object _makeelement
+    cdef object _namespace
+    cdef object _nsmap
+    cdef bint _annotate
+    cdef dict _cache
+    def __init__(self, *, namespace=None, nsmap=None, annotate=True,
+                 makeelement=None):
+        if nsmap is None:
+            nsmap = _DEFAULT_NSMAP if annotate else {}
+        self._nsmap = nsmap
+        self._namespace = None if namespace is None else "{%s}" % namespace
+        self._annotate = annotate
+        if makeelement is not None:
+            if not callable(makeelement):
+                raise TypeError(
+                    f"argument of 'makeelement' parameter must be callable, got {type(makeelement)}")
+            self._makeelement = makeelement
+        else:
+            self._makeelement = None
+        self._cache = {}
+
+    @cython.final
+    cdef _build_element_maker(self, tag, bint caching):
+        cdef _ObjectifyElementMakerCaller element_maker
+        element_maker = _ObjectifyElementMakerCaller.__new__(_ObjectifyElementMakerCaller)
+        if self._namespace is not None and tag[0] != "{":
+            element_maker._tag = self._namespace + tag
+        else:
+            element_maker._tag = tag
+        element_maker._nsmap = self._nsmap
+        element_maker._annotate = self._annotate
+        element_maker._element_factory = self._makeelement
+        if caching:
+            if len(self._cache) > 200:
+                self._cache.clear()
+            self._cache[tag] = element_maker
+        return element_maker
+
+    def __getattr__(self, tag):
+        element_maker = self._cache.get(tag)
+        if element_maker is None:
+            return self._build_element_maker(tag, caching=True)
+        return element_maker
+
+    def __call__(self, tag, *args, **kwargs):
+        element_maker = self._cache.get(tag)
+        if element_maker is None:
+            element_maker = self._build_element_maker(
+                tag, caching=not is_special_method(tag))
+        return element_maker(*args, **kwargs)
+
+################################################################################
+# Recursive element dumping
+
+cdef bint __RECURSIVE_STR = 0 # default: off
+
+def enable_recursive_str(on=True):
+    """enable_recursive_str(on=True)
+
+    Enable a recursively generated tree representation for str(element),
+    based on objectify.dump(element).
+    """
+    global __RECURSIVE_STR
+    __RECURSIVE_STR = on
+
+def dump(_Element element not None):
+    """dump(_Element element not None)
+
+    Return a recursively generated string representation of an element.
+    """
+    return _dump(element, 0)
+
+cdef object _dump(_Element element, int indent):
+    indentstr = "    " * indent
+    if isinstance(element, ObjectifiedDataElement):
+        value = repr(element)
+    else:
+        value = textOf(element._c_node)
+        if value is not None:
+            if not value.strip():
+                value = None
+            else:
+                value = repr(value)
+    result = f"{indentstr}{element.tag} = {value} [{_typename(element)}]\n"
+    xsi_ns    = "{%s}" % XML_SCHEMA_INSTANCE_NS
+    pytype_ns = "{%s}" % PYTYPE_NAMESPACE
+    for name, value in sorted(cetree.iterattributes(element, 3)):
+        if '{' in name:
+            if name == PYTYPE_ATTRIBUTE:
+                if value == TREE_PYTYPE_NAME:
+                    continue
+                else:
+                    name = name.replace(pytype_ns, 'py:')
+            name = name.replace(xsi_ns, 'xsi:')
+        result += f"{indentstr}  * {name} = {value!r}\n"
+
+    indent += 1
+    for child in element.iterchildren():
+        result += _dump(child, indent)
+    if indent == 1:
+        return result[:-1] # strip last '\n'
+    else:
+        return result
+
+
+################################################################################
+# Pickle support for objectified ElementTree
+
+def __unpickleElementTree(data):
+    return etree.ElementTree(fromstring(data))
+
+cdef _setupPickle(elementTreeReduceFunction):
+    import copyreg
+    copyreg.pickle(etree._ElementTree,
+                   elementTreeReduceFunction, __unpickleElementTree)
+
+def pickleReduceElementTree(obj):
+    return __unpickleElementTree, (etree.tostring(obj),)
+
+_setupPickle(pickleReduceElementTree)
+del pickleReduceElementTree
+
+################################################################################
+# Element class lookup
+
+cdef class ObjectifyElementClassLookup(ElementClassLookup):
+    """ObjectifyElementClassLookup(self, tree_class=None, empty_data_class=None)
+    Element class lookup method that uses the objectify classes.
+    """
+    cdef object empty_data_class
+    cdef object tree_class
+    def __init__(self, tree_class=None, empty_data_class=None):
+        """Lookup mechanism for objectify.
+
+        The default Element classes can be replaced by passing subclasses of
+        ObjectifiedElement and ObjectifiedDataElement as keyword arguments.
+        'tree_class' defines inner tree classes (defaults to
+        ObjectifiedElement), 'empty_data_class' defines the default class for
+        empty data elements (defaults to StringElement).
+        """
+        self._lookup_function = _lookupElementClass
+        if tree_class is None:
+            tree_class = ObjectifiedElement
+        self.tree_class = tree_class
+        if empty_data_class is None:
+            empty_data_class = StringElement
+        self.empty_data_class = empty_data_class
+
+cdef object _lookupElementClass(state, _Document doc, tree.xmlNode* c_node):
+    cdef ObjectifyElementClassLookup lookup
+    lookup = <ObjectifyElementClassLookup>state
+    # if element has children => no data class
+    if cetree.hasChild(c_node):
+        return lookup.tree_class
+
+    # if element is defined as xsi:nil, return NoneElement class
+    if "true" == cetree.attributeValueFromNsName(
+        c_node, _XML_SCHEMA_INSTANCE_NS, <unsigned char*>"nil"):
+        return NoneElement
+
+    # check for Python type hint
+    value = cetree.attributeValueFromNsName(
+        c_node, _PYTYPE_NAMESPACE, _PYTYPE_ATTRIBUTE_NAME)
+    if value is not None:
+        if value == TREE_PYTYPE_NAME:
+            return lookup.tree_class
+        py_type = <PyType>_PYTYPE_DICT.get(value)
+        if py_type is not None:
+            return py_type._type
+        # unknown 'pyval' => try to figure it out ourself, just go on
+
+    # check for XML Schema type hint
+    value = cetree.attributeValueFromNsName(
+        c_node, _XML_SCHEMA_INSTANCE_NS, <unsigned char*>"type")
+
+    if value is not None:
+        schema_type = <PyType>_SCHEMA_TYPE_DICT.get(value)
+        if schema_type is None and ':' in value:
+            prefix, value = value.split(':', 1)
+            schema_type = <PyType>_SCHEMA_TYPE_DICT.get(value)
+        if schema_type is not None:
+            return schema_type._type
+
+    # otherwise determine class based on text content type
+    el_class = _guessElementClass(c_node)
+    if el_class is not None:
+        return el_class
+
+    # if element is a root node => default to tree node
+    if c_node.parent is NULL or not tree._isElement(c_node.parent):
+        return lookup.tree_class
+
+    return lookup.empty_data_class
+
+
+################################################################################
+# Type annotations
+
+cdef PyType _check_type(tree.xmlNode* c_node, PyType pytype):
+    if pytype is None:
+        return None
+    value = textOf(c_node)
+    try:
+        pytype.type_check(value)
+        return pytype
+    except IGNORABLE_ERRORS:
+        # could not be parsed as the specified type => ignore
+        pass
+    return None
+
+def pyannotate(element_or_tree, *, ignore_old=False, ignore_xsi=False,
+             empty_pytype=None):
+    """pyannotate(element_or_tree, ignore_old=False, ignore_xsi=False, empty_pytype=None)
+
+    Recursively annotates the elements of an XML tree with 'pytype'
+    attributes.
+
+    If the 'ignore_old' keyword argument is True (the default), current 'pytype'
+    attributes will be ignored and replaced.  Otherwise, they will be checked
+    and only replaced if they no longer fit the current text value.
+
+    Setting the keyword argument ``ignore_xsi`` to True makes the function
+    additionally ignore existing ``xsi:type`` annotations.  The default is to
+    use them as a type hint.
+
+    The default annotation of empty elements can be set with the
+    ``empty_pytype`` keyword argument.  The default is not to annotate empty
+    elements.  Pass 'str', for example, to make string values the default.
+    """
+    cdef _Element  element
+    element = cetree.rootNodeOrRaise(element_or_tree)
+    _annotate(element, 0, 1, ignore_xsi, ignore_old, None, empty_pytype)
+
+def xsiannotate(element_or_tree, *, ignore_old=False, ignore_pytype=False,
+                empty_type=None):
+    """xsiannotate(element_or_tree, ignore_old=False, ignore_pytype=False, empty_type=None)
+
+    Recursively annotates the elements of an XML tree with 'xsi:type'
+    attributes.
+
+    If the 'ignore_old' keyword argument is True (the default), current
+    'xsi:type' attributes will be ignored and replaced.  Otherwise, they will be
+    checked and only replaced if they no longer fit the current text value.
+
+    Note that the mapping from Python types to XSI types is usually ambiguous.
+    Currently, only the first XSI type name in the corresponding PyType
+    definition will be used for annotation.  Thus, you should consider naming
+    the widest type first if you define additional types.
+
+    Setting the keyword argument ``ignore_pytype`` to True makes the function
+    additionally ignore existing ``pytype`` annotations.  The default is to
+    use them as a type hint.
+
+    The default annotation of empty elements can be set with the
+    ``empty_type`` keyword argument.  The default is not to annotate empty
+    elements.  Pass 'string', for example, to make string values the default.
+    """
+    cdef _Element  element
+    element = cetree.rootNodeOrRaise(element_or_tree)
+    _annotate(element, 1, 0, ignore_old, ignore_pytype, empty_type, None)
+
+def annotate(element_or_tree, *, ignore_old=True, ignore_xsi=False,
+             empty_pytype=None, empty_type=None, annotate_xsi=0,
+             annotate_pytype=1):
+    """annotate(element_or_tree, ignore_old=True, ignore_xsi=False, empty_pytype=None, empty_type=None, annotate_xsi=0, annotate_pytype=1)
+
+    Recursively annotates the elements of an XML tree with 'xsi:type'
+    and/or 'py:pytype' attributes.
+
+    If the 'ignore_old' keyword argument is True (the default), current
+    'py:pytype' attributes will be ignored for the type annotation. Set to False
+    if you want reuse existing 'py:pytype' information (iff appropriate for the
+    element text value).
+
+    If the 'ignore_xsi' keyword argument is False (the default), existing
+    'xsi:type' attributes will be used for the type annotation, if they fit the
+    element text values.
+
+    Note that the mapping from Python types to XSI types is usually ambiguous.
+    Currently, only the first XSI type name in the corresponding PyType
+    definition will be used for annotation.  Thus, you should consider naming
+    the widest type first if you define additional types.
+
+    The default 'py:pytype' annotation of empty elements can be set with the
+    ``empty_pytype`` keyword argument. Pass 'str', for example, to make
+    string values the default.
+
+    The default 'xsi:type' annotation of empty elements can be set with the
+    ``empty_type`` keyword argument.  The default is not to annotate empty
+    elements.  Pass 'string', for example, to make string values the default.
+
+    The keyword arguments 'annotate_xsi' (default: 0) and 'annotate_pytype'
+    (default: 1) control which kind(s) of annotation to use.
+    """
+    cdef _Element  element
+    element = cetree.rootNodeOrRaise(element_or_tree)
+    _annotate(element, annotate_xsi, annotate_pytype, ignore_xsi,
+              ignore_old, empty_type, empty_pytype)
+
+
+cdef _annotate(_Element element, bint annotate_xsi, bint annotate_pytype,
+               bint ignore_xsi, bint ignore_pytype,
+               empty_type_name, empty_pytype_name):
+    cdef _Document doc
+    cdef tree.xmlNode* c_node
+    cdef PyType empty_pytype, StrType, NoneType
+
+    if not annotate_xsi and not annotate_pytype:
+        return
+
+    if empty_type_name is not None:
+        if isinstance(empty_type_name, bytes):
+            empty_type_name = (<bytes>empty_type_name).decode("ascii")
+        empty_pytype = <PyType>_SCHEMA_TYPE_DICT.get(empty_type_name)
+    elif empty_pytype_name is not None:
+        if isinstance(empty_pytype_name, bytes):
+            empty_pytype_name = (<bytes>empty_pytype_name).decode("ascii")
+        empty_pytype = <PyType>_PYTYPE_DICT.get(empty_pytype_name)
+    else:
+        empty_pytype = None
+
+    StrType  = <PyType>_PYTYPE_DICT.get('str')
+    NoneType = <PyType>_PYTYPE_DICT.get('NoneType')
+
+    doc = element._doc
+    c_node = element._c_node
+    tree.BEGIN_FOR_EACH_ELEMENT_FROM(c_node, c_node, 1)
+    if c_node.type == tree.XML_ELEMENT_NODE:
+        _annotate_element(c_node, doc, annotate_xsi, annotate_pytype,
+                          ignore_xsi, ignore_pytype,
+                          empty_type_name, empty_pytype, StrType, NoneType)
+    tree.END_FOR_EACH_ELEMENT_FROM(c_node)
+
+cdef int _annotate_element(tree.xmlNode* c_node, _Document doc,
+                           bint annotate_xsi, bint annotate_pytype,
+                           bint ignore_xsi, bint ignore_pytype,
+                           empty_type_name, PyType empty_pytype,
+                           PyType StrType, PyType NoneType) except -1:
+    cdef tree.xmlNs*   c_ns
+    cdef PyType pytype = None
+    typename = None
+    istree = 0
+
+    # if element is defined as xsi:nil, represent it as None
+    if cetree.attributeValueFromNsName(
+        c_node, _XML_SCHEMA_INSTANCE_NS, <unsigned char*>"nil") == "true":
+        pytype = NoneType
+
+    if pytype is None and not ignore_xsi:
+        # check that old xsi type value is valid
+        typename = cetree.attributeValueFromNsName(
+            c_node, _XML_SCHEMA_INSTANCE_NS, <unsigned char*>"type")
+        if typename is not None:
+            pytype = <PyType>_SCHEMA_TYPE_DICT.get(typename)
+            if pytype is None and ':' in typename:
+                prefix, typename = typename.split(':', 1)
+                pytype = <PyType>_SCHEMA_TYPE_DICT.get(typename)
+            if pytype is not None and pytype is not StrType:
+                # StrType does not have a typecheck but is the default
+                # anyway, so just accept it if given as type
+                # information
+                pytype = _check_type(c_node, pytype)
+                if pytype is None:
+                    typename = None
+
+    if pytype is None and not ignore_pytype:
+        # check that old pytype value is valid
+        old_pytypename = cetree.attributeValueFromNsName(
+            c_node, _PYTYPE_NAMESPACE, _PYTYPE_ATTRIBUTE_NAME)
+        if old_pytypename is not None:
+            if old_pytypename == TREE_PYTYPE_NAME:
+                if not cetree.hasChild(c_node):
+                    # only case where we should keep it,
+                    # everything else is clear enough
+                    pytype = TREE_PYTYPE
+            else:
+                if old_pytypename == 'none':
+                    # transition from lxml 1.x
+                    old_pytypename = "NoneType"
+                pytype = <PyType>_PYTYPE_DICT.get(old_pytypename)
+                if pytype is not None and pytype is not StrType:
+                    # StrType does not have a typecheck but is the
+                    # default anyway, so just accept it if given as
+                    # type information
+                    pytype = _check_type(c_node, pytype)
+
+    if pytype is None:
+        # try to guess type
+        if not cetree.hasChild(c_node):
+            # element has no children => data class
+            pytype = _guessPyType(textOf(c_node), StrType)
+        else:
+            istree = 1
+
+    if pytype is None:
+        # use default type for empty elements
+        if cetree.hasText(c_node):
+            pytype = StrType
+        else:
+            pytype = empty_pytype
+            if typename is None:
+                typename = empty_type_name
+
+    if pytype is not None:
+        if typename is None:
+            if not istree:
+                if pytype._schema_types:
+                    # pytype->xsi:type is a 1:n mapping
+                    # simply take the first
+                    typename = pytype._schema_types[0]
+        elif typename not in pytype._schema_types:
+            typename = pytype._schema_types[0]
+
+    if annotate_xsi:
+        if typename is None or istree:
+            cetree.delAttributeFromNsName(
+                c_node, _XML_SCHEMA_INSTANCE_NS, <unsigned char*>"type")
+        else:
+            # update or create attribute
+            typename_utf8 = cetree.utf8(typename)
+            c_ns = cetree.findOrBuildNodeNsPrefix(
+                doc, c_node, _XML_SCHEMA_NS, <unsigned char*>'xsd')
+            if c_ns is not NULL:
+                if b':' in typename_utf8:
+                    prefix, name = typename_utf8.split(b':', 1)
+                    if c_ns.prefix is NULL or c_ns.prefix[0] == c'\0':
+                        typename_utf8 = name
+                    elif tree.xmlStrcmp(_xcstr(prefix), c_ns.prefix) != 0:
+                        typename_utf8 = (<unsigned char*>c_ns.prefix) + b':' + name
+                elif c_ns.prefix is not NULL and c_ns.prefix[0] != c'\0':
+                    typename_utf8 = (<unsigned char*>c_ns.prefix) + b':' + typename_utf8
+            c_ns = cetree.findOrBuildNodeNsPrefix(
+                doc, c_node, _XML_SCHEMA_INSTANCE_NS, <unsigned char*>'xsi')
+            tree.xmlSetNsProp(c_node, c_ns, <unsigned char*>"type", _xcstr(typename_utf8))
+
+    if annotate_pytype:
+        if pytype is None:
+            # delete attribute if it exists
+            cetree.delAttributeFromNsName(
+                c_node, _PYTYPE_NAMESPACE, _PYTYPE_ATTRIBUTE_NAME)
+        else:
+            # update or create attribute
+            c_ns = cetree.findOrBuildNodeNsPrefix(
+                doc, c_node, _PYTYPE_NAMESPACE, <unsigned char*>'py')
+            pytype_name = cetree.utf8(pytype.name)
+            tree.xmlSetNsProp(c_node, c_ns, _PYTYPE_ATTRIBUTE_NAME,
+                              _xcstr(pytype_name))
+            if pytype is NoneType:
+                c_ns = cetree.findOrBuildNodeNsPrefix(
+                    doc, c_node, _XML_SCHEMA_INSTANCE_NS, <unsigned char*>'xsi')
+                tree.xmlSetNsProp(c_node, c_ns, <unsigned char*>"nil", <unsigned char*>"true")
+
+    return 0
+
+cdef object _strip_attributes = etree.strip_attributes
+cdef object _cleanup_namespaces = etree.cleanup_namespaces
+
+def deannotate(element_or_tree, *, bint pytype=True, bint xsi=True,
+               bint xsi_nil=False, bint cleanup_namespaces=False):
+    """deannotate(element_or_tree, pytype=True, xsi=True, xsi_nil=False, cleanup_namespaces=False)
+
+    Recursively de-annotate the elements of an XML tree by removing 'py:pytype'
+    and/or 'xsi:type' attributes and/or 'xsi:nil' attributes.
+
+    If the 'pytype' keyword argument is True (the default), 'py:pytype'
+    attributes will be removed. If the 'xsi' keyword argument is True (the
+    default), 'xsi:type' attributes will be removed.
+    If the 'xsi_nil' keyword argument is True (default: False), 'xsi:nil'
+    attributes will be removed.
+
+    Note that this does not touch the namespace declarations by
+    default.  If you want to remove unused namespace declarations from
+    the tree, pass the option ``cleanup_namespaces=True``.
+    """
+    cdef list attribute_names = []
+
+    if pytype:
+        attribute_names.append(PYTYPE_ATTRIBUTE)
+    if xsi:
+        attribute_names.append(XML_SCHEMA_INSTANCE_TYPE_ATTR)
+    if xsi_nil:
+        attribute_names.append(XML_SCHEMA_INSTANCE_NIL_ATTR)
+
+    _strip_attributes(element_or_tree, *attribute_names)
+    if cleanup_namespaces:
+        _cleanup_namespaces(element_or_tree)
+
+################################################################################
+# Module level parser setup
+
+cdef object __DEFAULT_PARSER
+__DEFAULT_PARSER = etree.XMLParser(remove_blank_text=True)
+__DEFAULT_PARSER.set_element_class_lookup( ObjectifyElementClassLookup() )
+
+cdef object objectify_parser
+objectify_parser = __DEFAULT_PARSER
+
+def set_default_parser(new_parser = None):
+    """set_default_parser(new_parser = None)
+
+    Replace the default parser used by objectify's Element() and
+    fromstring() functions.
+
+    The new parser must be an etree.XMLParser.
+
+    Call without arguments to reset to the original parser.
+    """
+    global objectify_parser
+    if new_parser is None:
+        objectify_parser = __DEFAULT_PARSER
+    elif isinstance(new_parser, etree.XMLParser):
+        objectify_parser = new_parser
+    else:
+        raise TypeError, "parser must inherit from lxml.etree.XMLParser"
+
+def makeparser(**kw):
+    """makeparser(remove_blank_text=True, **kw)
+
+    Create a new XML parser for objectify trees.
+
+    You can pass all keyword arguments that are supported by
+    ``etree.XMLParser()``.  Note that this parser defaults to removing
+    blank text.  You can disable this by passing the
+    ``remove_blank_text`` boolean keyword option yourself.
+    """
+    if 'remove_blank_text' not in kw:
+        kw['remove_blank_text'] = True
+    parser = etree.XMLParser(**kw)
+    parser.set_element_class_lookup( ObjectifyElementClassLookup() )
+    return parser
+
+cdef _Element _makeElement(tag, text, attrib, nsmap):
+    return cetree.makeElement(tag, None, objectify_parser, text, None, attrib, nsmap)
+
+################################################################################
+# Module level factory functions
+
+cdef object _fromstring
+_fromstring = etree.fromstring
+
+SubElement = etree.SubElement
+
+def fromstring(xml, parser=None, *, base_url=None):
+    """fromstring(xml, parser=None, base_url=None)
+
+    Objectify specific version of the lxml.etree fromstring() function
+    that uses the objectify parser.
+
+    You can pass a different parser as second argument.
+
+    The ``base_url`` keyword argument allows to set the original base URL of
+    the document to support relative Paths when looking up external entities
+    (DTD, XInclude, ...).
+    """
+    if parser is None:
+        parser = objectify_parser
+    return _fromstring(xml, parser, base_url=base_url)
+
+def XML(xml, parser=None, *, base_url=None):
+    """XML(xml, parser=None, base_url=None)
+
+    Objectify specific version of the lxml.etree XML() literal factory
+    that uses the objectify parser.
+
+    You can pass a different parser as second argument.
+
+    The ``base_url`` keyword argument allows to set the original base URL of
+    the document to support relative Paths when looking up external entities
+    (DTD, XInclude, ...).
+    """
+    if parser is None:
+        parser = objectify_parser
+    return _fromstring(xml, parser, base_url=base_url)
+
+cdef object _parse
+_parse = etree.parse
+
+def parse(f, parser=None, *, base_url=None):
+    """parse(f, parser=None, base_url=None)
+
+    Parse a file or file-like object with the objectify parser.
+
+    You can pass a different parser as second argument.
+
+    The ``base_url`` keyword allows setting a URL for the document
+    when parsing from a file-like object.  This is needed when looking
+    up external entities (DTD, XInclude, ...) with relative paths.
+    """
+    if parser is None:
+        parser = objectify_parser
+    return _parse(f, parser, base_url=base_url)
+
+cdef dict _DEFAULT_NSMAP = {
+    "py"  : PYTYPE_NAMESPACE,
+    "xsi" : XML_SCHEMA_INSTANCE_NS,
+    "xsd" : XML_SCHEMA_NS
+}
+
+E = ElementMaker()
+
+def Element(_tag, attrib=None, nsmap=None, *, _pytype=None, **_attributes):
+    """Element(_tag, attrib=None, nsmap=None, _pytype=None, **_attributes)
+
+    Objectify specific version of the lxml.etree Element() factory that
+    always creates a structural (tree) element.
+
+    NOTE: requires parser based element class lookup activated in lxml.etree!
+    """
+    if attrib is not None:
+        if _attributes:
+            attrib = dict(attrib)
+            attrib.update(_attributes)
+        _attributes = attrib
+    if _pytype is None:
+        _pytype = TREE_PYTYPE_NAME
+    if nsmap is None:
+        nsmap = _DEFAULT_NSMAP
+    _attributes[PYTYPE_ATTRIBUTE] = _pytype
+    return _makeElement(_tag, None, _attributes, nsmap)
+
+def DataElement(_value, attrib=None, nsmap=None, *, _pytype=None, _xsi=None,
+                **_attributes):
+    """DataElement(_value, attrib=None, nsmap=None, _pytype=None, _xsi=None, **_attributes)
+
+    Create a new element from a Python value and XML attributes taken from
+    keyword arguments or a dictionary passed as second argument.
+
+    Automatically adds a 'pytype' attribute for the Python type of the value,
+    if the type can be identified.  If '_pytype' or '_xsi' are among the
+    keyword arguments, they will be used instead.
+
+    If the _value argument is an ObjectifiedDataElement instance, its py:pytype,
+    xsi:type and other attributes and nsmap are reused unless they are redefined
+    in attrib and/or keyword arguments.
+    """
+    if nsmap is None:
+        nsmap = _DEFAULT_NSMAP
+    if attrib is not None and attrib:
+        if _attributes:
+            attrib = dict(attrib)
+            attrib.update(_attributes)
+        _attributes = attrib
+    if isinstance(_value, ObjectifiedElement):
+        if _pytype is None:
+            if _xsi is None and not _attributes and nsmap is _DEFAULT_NSMAP:
+                # special case: no change!
+                return _value.__copy__()
+    if isinstance(_value, ObjectifiedDataElement):
+        # reuse existing nsmap unless redefined in nsmap parameter
+        temp = _value.nsmap
+        if temp is not None and temp:
+            temp = dict(temp)
+            temp.update(nsmap)
+            nsmap = temp
+        # reuse existing attributes unless redefined in attrib/_attributes
+        temp = _value.attrib
+        if temp is not None and temp:
+            temp = dict(temp)
+            temp.update(_attributes)
+            _attributes = temp
+        # reuse existing xsi:type or py:pytype attributes, unless provided as
+        # arguments
+        if _xsi is None and _pytype is None:
+            _xsi = _attributes.get(XML_SCHEMA_INSTANCE_TYPE_ATTR)
+            _pytype = _attributes.get(PYTYPE_ATTRIBUTE)
+
+    if _xsi is not None:
+        if ':' in _xsi:
+            prefix, name = _xsi.split(':', 1)
+            ns = nsmap.get(prefix)
+            if ns != XML_SCHEMA_NS:
+                raise ValueError, "XSD types require the XSD namespace"
+        elif nsmap is _DEFAULT_NSMAP:
+            name = _xsi
+            _xsi = 'xsd:' + _xsi
+        else:
+            name = _xsi
+            for prefix, ns in nsmap.items():
+                if ns == XML_SCHEMA_NS:
+                    if prefix is not None and prefix:
+                        _xsi = prefix + ':' + _xsi
+                    break
+            else:
+                raise ValueError, "XSD types require the XSD namespace"
+        _attributes[XML_SCHEMA_INSTANCE_TYPE_ATTR] = _xsi
+        if _pytype is None:
+            # allow using unregistered or even wrong xsi:type names
+            py_type = <PyType>_SCHEMA_TYPE_DICT.get(_xsi)
+            if py_type is None:
+                py_type = <PyType>_SCHEMA_TYPE_DICT.get(name)
+            if py_type is not None:
+                _pytype = py_type.name
+
+    if _pytype is None:
+        _pytype = _pytypename(_value)
+
+    if _value is None and _pytype != "str":
+        _pytype = _pytype or "NoneType"
+        strval = None
+    elif python._isString(_value):
+        strval = _value
+    elif isinstance(_value, bool):
+        if _value:
+            strval = "true"
+        else:
+            strval = "false"
+    else:
+        py_type = <PyType>_PYTYPE_DICT.get(_pytype)
+        stringify = unicode if py_type is None else py_type.stringify
+        strval = stringify(_value)
+
+    if _pytype is not None:
+        if _pytype == "NoneType" or _pytype == "none":
+            strval = None
+            _attributes[XML_SCHEMA_INSTANCE_NIL_ATTR] = "true"
+        else:
+            # check if type information from arguments is valid
+            py_type = <PyType>_PYTYPE_DICT.get(_pytype)
+            if py_type is not None:
+                if py_type.type_check is not None:
+                    py_type.type_check(strval)
+                _attributes[PYTYPE_ATTRIBUTE] = _pytype
+
+    return _makeElement("value", strval, _attributes, nsmap)
+
+
+################################################################################
+# ObjectPath
+
+include "objectpath.pxi"

.venv/lib/python3.12/site-packages/lxml/objectpath.pxi

@@ -0,0 +1,332 @@
+################################################################################
+# ObjectPath
+
+ctypedef struct _ObjectPath:
+    const_xmlChar* href
+    const_xmlChar* name
+    Py_ssize_t index
+
+
+cdef object _NO_DEFAULT = object()
+
+
+cdef class ObjectPath:
+    """ObjectPath(path)
+    Immutable object that represents a compiled object path.
+
+    Example for a path: 'root.child[1].{other}child[25]'
+    """
+    cdef readonly object find
+    cdef list _path
+    cdef object _path_str
+    cdef _ObjectPath*  _c_path
+    cdef Py_ssize_t _path_len
+    def __init__(self, path):
+        if python._isString(path):
+            self._path = _parse_object_path_string(path)
+            self._path_str = path
+        else:
+            self._path = _parse_object_path_list(path)
+            self._path_str = '.'.join(path)
+        self._path_len = len(self._path)
+        self._c_path = _build_object_path_segments(self._path)
+        self.find = self.__call__
+
+    def __dealloc__(self):
+        if self._c_path is not NULL:
+            python.lxml_free(self._c_path)
+
+    def __str__(self):
+        return self._path_str
+
+    def __call__(self, _Element root not None, *_default):
+        """Follow the attribute path in the object structure and return the
+        target attribute value.
+
+        If it it not found, either returns a default value (if one was passed
+        as second argument) or raises AttributeError.
+        """
+        if _default:
+            if len(_default) > 1:
+                raise TypeError, "invalid number of arguments: needs one or two"
+            default = _default[0]
+        else:
+            default = _NO_DEFAULT
+        return _find_object_path(root, self._c_path, self._path_len, default)
+
+    def hasattr(self, _Element root not None):
+        "hasattr(self, root)"
+        try:
+            _find_object_path(root, self._c_path, self._path_len, _NO_DEFAULT)
+        except AttributeError:
+            return False
+        return True
+
+    def setattr(self, _Element root not None, value):
+        """setattr(self, root, value)
+
+        Set the value of the target element in a subtree.
+
+        If any of the children on the path does not exist, it is created.
+        """
+        _create_object_path(root, self._c_path, self._path_len, 1, value)
+
+    def addattr(self, _Element root not None, value):
+        """addattr(self, root, value)
+
+        Append a value to the target element in a subtree.
+
+        If any of the children on the path does not exist, it is created.
+        """
+        _create_object_path(root, self._c_path, self._path_len, 0, value)
+
+
+cdef object __MATCH_PATH_SEGMENT = re.compile(
+    r"(\.?)\s*(?:\{([^}]*)\})?\s*([^.{}\[\]\s]+)\s*(?:\[\s*([-0-9]+)\s*\])?",
+    re.U).match
+
+cdef tuple _RELATIVE_PATH_SEGMENT = (None, None, 0)
+
+
+cdef list _parse_object_path_string(_path):
+    """Parse object path string into a (ns, name, index) list.
+    """
+    cdef bint has_dot
+    cdef unicode path
+    new_path = []
+    if isinstance(_path, bytes):
+        path = (<bytes>_path).decode('ascii')
+    elif type(_path) is not unicode:
+        path = unicode(_path)
+    else:
+        path = _path
+    path = path.strip()
+    if path == '.':
+        return [_RELATIVE_PATH_SEGMENT]
+    path_pos = 0
+    while path:
+        match = __MATCH_PATH_SEGMENT(path, path_pos)
+        if match is None:
+            break
+
+        dot, ns, name, index = match.groups()
+        index = int(index) if index else 0
+        has_dot = dot == '.'
+        if not new_path:
+            if has_dot:
+                # path '.child' => ignore root
+                new_path.append(_RELATIVE_PATH_SEGMENT)
+            elif index:
+                raise ValueError, "index not allowed on root node"
+        elif not has_dot:
+            raise ValueError, "invalid path"
+        if ns is not None:
+            ns = python.PyUnicode_AsUTF8String(ns)
+        name = python.PyUnicode_AsUTF8String(name)
+        new_path.append( (ns, name, index) )
+
+        path_pos = match.end()
+    if not new_path or len(path) > path_pos:
+        raise ValueError, "invalid path"
+    return new_path
+
+
+cdef list _parse_object_path_list(path):
+    """Parse object path sequence into a (ns, name, index) list.
+    """
+    new_path = []
+    for item in path:
+        item = item.strip()
+        if not new_path and item == '':
+            # path '.child' => ignore root
+            ns = name = None
+            index = 0
+        else:
+            ns, name = cetree.getNsTag(item)
+            c_name = _xcstr(name)
+            index_pos = tree.xmlStrchr(c_name, c'[')
+            if index_pos is NULL:
+                index = 0
+            else:
+                index_end = tree.xmlStrchr(index_pos + 1, c']')
+                if index_end is NULL:
+                    raise ValueError, "index must be enclosed in []"
+                index = int(index_pos[1:index_end - index_pos])
+                if not new_path and index != 0:
+                    raise ValueError, "index not allowed on root node"
+                name = <bytes>c_name[:index_pos - c_name]
+        new_path.append( (ns, name, index) )
+    if not new_path:
+        raise ValueError, "invalid path"
+    return new_path
+
+
+cdef _ObjectPath* _build_object_path_segments(list path_list) except NULL:
+    cdef _ObjectPath* c_path
+    cdef _ObjectPath* c_path_segments
+    c_path_segments = <_ObjectPath*>python.lxml_malloc(len(path_list), sizeof(_ObjectPath))
+    if c_path_segments is NULL:
+        raise MemoryError()
+    c_path = c_path_segments
+    for href, name, index in path_list:
+        c_path[0].href = _xcstr(href) if href is not None else NULL
+        c_path[0].name = _xcstr(name) if name is not None else NULL
+        c_path[0].index = index
+        c_path += 1
+    return c_path_segments
+
+
+cdef _find_object_path(_Element root, _ObjectPath* c_path, Py_ssize_t c_path_len, default_value):
+    """Follow the path to find the target element.
+    """
+    cdef tree.xmlNode* c_node
+    cdef Py_ssize_t c_index
+    c_node = root._c_node
+    c_name = c_path[0].name
+    c_href = c_path[0].href
+    if c_href is NULL or c_href[0] == c'\0':
+        c_href = tree._getNs(c_node)
+    if not cetree.tagMatches(c_node, c_href, c_name):
+        if default_value is not _NO_DEFAULT:
+            return default_value
+        else:
+            raise ValueError(
+                f"root element does not match: need {cetree.namespacedNameFromNsName(c_href, c_name)}, got {root.tag}")
+
+    while c_node is not NULL:
+        c_path_len -= 1
+        if c_path_len <= 0:
+            break
+
+        c_path += 1
+        if c_path[0].href is not NULL:
+            c_href = c_path[0].href # otherwise: keep parent namespace
+        c_name = tree.xmlDictExists(c_node.doc.dict, c_path[0].name, -1)
+        if c_name is NULL:
+            c_name = c_path[0].name
+            c_node = NULL
+            break
+        c_index = c_path[0].index
+        c_node = c_node.last if c_index < 0 else c_node.children
+        c_node = _findFollowingSibling(c_node, c_href, c_name, c_index)
+
+    if c_node is not NULL:
+        return cetree.elementFactory(root._doc, c_node)
+    elif default_value is not _NO_DEFAULT:
+        return default_value
+    else:
+        tag = cetree.namespacedNameFromNsName(c_href, c_name)
+        raise AttributeError, f"no such child: {tag}"
+
+
+cdef _create_object_path(_Element root, _ObjectPath* c_path,
+                         Py_ssize_t c_path_len, int replace, value):
+    """Follow the path to find the target element, build the missing children
+    as needed and set the target element to 'value'.  If replace is true, an
+    existing value is replaced, otherwise the new value is added.
+    """
+    cdef _Element child
+    cdef tree.xmlNode* c_node
+    cdef tree.xmlNode* c_child
+    cdef Py_ssize_t c_index
+    if c_path_len == 1:
+        raise TypeError, "cannot update root node"
+
+    c_node = root._c_node
+    c_name = c_path[0].name
+    c_href = c_path[0].href
+    if c_href is NULL or c_href[0] == c'\0':
+        c_href = tree._getNs(c_node)
+    if not cetree.tagMatches(c_node, c_href, c_name):
+        raise ValueError(
+            f"root element does not match: need {cetree.namespacedNameFromNsName(c_href, c_name)}, got {root.tag}")
+
+    while c_path_len > 1:
+        c_path_len -= 1
+        c_path += 1
+        if c_path[0].href is not NULL:
+            c_href = c_path[0].href # otherwise: keep parent namespace
+        c_index = c_path[0].index
+        c_name = tree.xmlDictExists(c_node.doc.dict, c_path[0].name, -1)
+        if c_name is NULL:
+            c_name = c_path[0].name
+            c_child = NULL
+        else:
+            c_child = c_node.last if c_index < 0 else c_node.children
+            c_child = _findFollowingSibling(c_child, c_href, c_name, c_index)
+
+        if c_child is not NULL:
+            c_node = c_child
+        elif c_index != 0:
+            raise TypeError, "creating indexed path attributes is not supported"
+        elif c_path_len == 1:
+            _appendValue(cetree.elementFactory(root._doc, c_node),
+                         cetree.namespacedNameFromNsName(c_href, c_name),
+                         value)
+            return
+        else:
+            child = cetree.makeSubElement(
+                cetree.elementFactory(root._doc, c_node),
+                cetree.namespacedNameFromNsName(c_href, c_name),
+                None, None, None, None)
+            c_node = child._c_node
+
+    # if we get here, the entire path was already there
+    if replace:
+        element = cetree.elementFactory(root._doc, c_node)
+        _replaceElement(element, value)
+    else:
+        _appendValue(cetree.elementFactory(root._doc, c_node.parent),
+                     cetree.namespacedName(c_node), value)
+
+
+cdef list _build_descendant_paths(tree.xmlNode* c_node, prefix_string):
+    """Returns a list of all descendant paths.
+    """
+    cdef list path, path_list
+    tag = cetree.namespacedName(c_node)
+    if prefix_string:
+        if prefix_string[-1] != '.':
+            prefix_string += '.'
+        prefix_string = prefix_string + tag
+    else:
+        prefix_string = tag
+    path = [prefix_string]
+    path_list = []
+    _recursive_build_descendant_paths(c_node, path, path_list)
+    return path_list
+
+
+cdef int _recursive_build_descendant_paths(tree.xmlNode* c_node,
+                                           list path, list path_list) except -1:
+    """Fills the list 'path_list' with all descendant paths, initial prefix
+    being in the list 'path'.
+    """
+    cdef tree.xmlNode* c_child
+    tags = {}
+    path_list.append('.'.join(path))
+    c_href = tree._getNs(c_node)
+    c_child = c_node.children
+    while c_child is not NULL:
+        while c_child.type != tree.XML_ELEMENT_NODE:
+            c_child = c_child.next
+            if c_child is NULL:
+                return 0
+        if c_href is tree._getNs(c_child):
+            tag = pyunicode(c_child.name)
+        elif c_href is not NULL and tree._getNs(c_child) is NULL:
+            # special case: parent has namespace, child does not
+            tag = '{}' + pyunicode(c_child.name)
+        else:
+            tag = cetree.namespacedName(c_child)
+        count = tags.get(tag)
+        if count is None:
+            tags[tag] = 1
+        else:
+            tags[tag] = count + 1
+            tag += f'[{count}]'
+        path.append(tag)
+        _recursive_build_descendant_paths(c_child, path, path_list)
+        del path[-1]
+        c_child = c_child.next
+    return 0

.venv/lib/python3.12/site-packages/lxml/parser.pxi

@@ -0,0 +1,2085 @@
+# Parsers for XML and HTML
+
+from lxml.includes cimport xmlparser
+from lxml.includes cimport htmlparser
+
+cdef object _GenericAlias
+try:
+    from types import GenericAlias as _GenericAlias
+except ImportError:
+    # Python 3.8 - we only need this as return value from "__class_getitem__"
+    def _GenericAlias(cls, item):
+        return f"{cls.__name__}[{item.__name__}]"
+
+
+class ParseError(LxmlSyntaxError):
+    """Syntax error while parsing an XML document.
+
+    For compatibility with ElementTree 1.3 and later.
+    """
+    def __init__(self, message, code, line, column, filename=None):
+        super(_ParseError, self).__init__(message)
+        self.lineno, self.offset = (line, column - 1)
+        self.code = code
+        self.filename = filename
+
+    @property
+    def position(self):
+        return self.lineno, self.offset + 1
+
+    @position.setter
+    def position(self, new_pos):
+        self.lineno, column = new_pos
+        self.offset = column - 1
+
+cdef object _ParseError = ParseError
+
+
+class XMLSyntaxError(ParseError):
+    """Syntax error while parsing an XML document.
+    """
+
+cdef class ParserError(LxmlError):
+    """Internal lxml parser error.
+    """
+
+
+@cython.final
+@cython.internal
+cdef class _ParserDictionaryContext:
+    # Global parser context to share the string dictionary.
+    #
+    # This class is a delegate singleton!
+    #
+    # It creates _ParserDictionaryContext objects for each thread to keep thread state,
+    # but those must never be used directly.  Always stick to using the static
+    # __GLOBAL_PARSER_CONTEXT as defined below the class.
+    #
+
+    cdef tree.xmlDict* _c_dict
+    cdef _BaseParser _default_parser
+    cdef list _implied_parser_contexts
+
+    def __cinit__(self):
+        self._implied_parser_contexts = []
+
+    def __dealloc__(self):
+        if self._c_dict is not NULL:
+            xmlparser.xmlDictFree(self._c_dict)
+
+    cdef int initMainParserContext(self) except -1:
+        """Put the global context into the thread dictionary of the main
+        thread.  To be called once and only in the main thread."""
+        thread_dict = python.PyThreadState_GetDict()
+        if thread_dict is not NULL:
+            (<dict>thread_dict)["_ParserDictionaryContext"] = self
+
+    cdef _ParserDictionaryContext _findThreadParserContext(self):
+        "Find (or create) the _ParserDictionaryContext object for the current thread"
+        cdef _ParserDictionaryContext context
+        thread_dict = python.PyThreadState_GetDict()
+        if thread_dict is NULL:
+            return self
+        d = <dict>thread_dict
+        result = python.PyDict_GetItem(d, "_ParserDictionaryContext")
+        if result is not NULL:
+            return <object>result
+        context = <_ParserDictionaryContext>_ParserDictionaryContext.__new__(_ParserDictionaryContext)
+        d["_ParserDictionaryContext"] = context
+        return context
+
+    cdef int setDefaultParser(self, _BaseParser parser) except -1:
+        "Set the default parser for the current thread"
+        cdef _ParserDictionaryContext context
+        context = self._findThreadParserContext()
+        context._default_parser = parser
+
+    cdef _BaseParser getDefaultParser(self):
+        "Return (or create) the default parser of the current thread"
+        cdef _ParserDictionaryContext context
+        context = self._findThreadParserContext()
+        if context._default_parser is None:
+            if self._default_parser is None:
+                self._default_parser = __DEFAULT_XML_PARSER._copy()
+            if context is not self:
+                context._default_parser = self._default_parser._copy()
+        return context._default_parser
+
+    cdef tree.xmlDict* _getThreadDict(self, tree.xmlDict* default):
+        "Return the thread-local dict or create a new one if necessary."
+        cdef _ParserDictionaryContext context
+        context = self._findThreadParserContext()
+        if context._c_dict is NULL:
+            # thread dict not yet set up => use default or create a new one
+            if default is not NULL:
+                context._c_dict = default
+                xmlparser.xmlDictReference(default)
+                return default
+            if self._c_dict is NULL:
+                self._c_dict = xmlparser.xmlDictCreate()
+            if context is not self:
+                context._c_dict = xmlparser.xmlDictCreateSub(self._c_dict)
+        return context._c_dict
+
+    cdef int initThreadDictRef(self, tree.xmlDict** c_dict_ref) except -1:
+        c_dict = c_dict_ref[0]
+        c_thread_dict = self._getThreadDict(c_dict)
+        if c_dict is c_thread_dict:
+            return 0
+        if c_dict is not NULL:
+            xmlparser.xmlDictFree(c_dict)
+        c_dict_ref[0] = c_thread_dict
+        xmlparser.xmlDictReference(c_thread_dict)
+
+    cdef int initParserDict(self, xmlparser.xmlParserCtxt* pctxt) except -1:
+        "Assure we always use the same string dictionary."
+        self.initThreadDictRef(&pctxt.dict)
+        pctxt.dictNames = 1
+
+    cdef int initXPathParserDict(self, xpath.xmlXPathContext* pctxt) except -1:
+        "Assure we always use the same string dictionary."
+        self.initThreadDictRef(&pctxt.dict)
+
+    cdef int initDocDict(self, xmlDoc* result) except -1:
+        "Store dict of last object parsed if no shared dict yet"
+        # XXX We also free the result dict here if there already was one.
+        # This case should only occur for new documents with empty dicts,
+        # otherwise we'd free data that's in use => segfault
+        self.initThreadDictRef(&result.dict)
+
+    cdef _ParserContext findImpliedContext(self):
+        """Return any current implied xml parser context for the current
+        thread.  This is used when the resolver functions are called
+        with an xmlParserCtxt that was generated from within libxml2
+        (i.e. without a _ParserContext) - which happens when parsing
+        schema and xinclude external references."""
+        cdef _ParserDictionaryContext context
+        cdef _ParserContext implied_context
+
+        # see if we have a current implied parser
+        context = self._findThreadParserContext()
+        if context._implied_parser_contexts:
+            implied_context = context._implied_parser_contexts[-1]
+            return implied_context
+        return None
+
+    cdef int pushImpliedContextFromParser(self, _BaseParser parser) except -1:
+        "Push a new implied context object taken from the parser."
+        if parser is not None:
+            self.pushImpliedContext(parser._getParserContext())
+        else:
+            self.pushImpliedContext(None)
+
+    cdef int pushImpliedContext(self, _ParserContext parser_context) except -1:
+        "Push a new implied context object."
+        cdef _ParserDictionaryContext context
+        context = self._findThreadParserContext()
+        context._implied_parser_contexts.append(parser_context)
+
+    cdef int popImpliedContext(self) except -1:
+        "Pop the current implied context object."
+        cdef _ParserDictionaryContext context
+        context = self._findThreadParserContext()
+        context._implied_parser_contexts.pop()
+
+cdef _ParserDictionaryContext __GLOBAL_PARSER_CONTEXT = _ParserDictionaryContext()
+__GLOBAL_PARSER_CONTEXT.initMainParserContext()
+
+############################################################
+## support for Python unicode I/O
+############################################################
+
+# name of Python Py_UNICODE encoding as known to libxml2
+cdef const_char* _PY_UNICODE_ENCODING = NULL
+
+cdef int _setupPythonUnicode() except -1:
+    """Sets _PY_UNICODE_ENCODING to the internal encoding name of Python unicode
+    strings if libxml2 supports reading native Python unicode.  This depends
+    on iconv and the local Python installation, so we simply check if we find
+    a matching encoding handler.
+    """
+    cdef tree.xmlCharEncodingHandler* enchandler
+    cdef Py_ssize_t l
+    cdef const_char* enc
+    cdef Py_UNICODE *uchars = [c'<', c't', c'e', c's', c't', c'/', c'>']
+    cdef const_xmlChar* buffer = <const_xmlChar*>uchars
+    # apparently, libxml2 can't detect UTF-16 on some systems
+    if (buffer[0] == c'<' and buffer[1] == c'\0' and
+            buffer[2] == c't' and buffer[3] == c'\0'):
+        enc = "UTF-16LE"
+    elif (buffer[0] == c'\0' and buffer[1] == c'<' and
+            buffer[2] == c'\0' and buffer[3] == c't'):
+        enc = "UTF-16BE"
+    else:
+        # let libxml2 give it a try
+        enc = _findEncodingName(buffer, sizeof(Py_UNICODE) * 7)
+        if enc is NULL:
+            # not my fault, it's YOUR broken system :)
+            return 0
+    enchandler = tree.xmlFindCharEncodingHandler(enc)
+    if enchandler is not NULL:
+        global _PY_UNICODE_ENCODING
+        tree.xmlCharEncCloseFunc(enchandler)
+        _PY_UNICODE_ENCODING = enc
+    return 0
+
+cdef const_char* _findEncodingName(const_xmlChar* buffer, int size) noexcept:
+    "Work around bug in libxml2: find iconv name of encoding on our own."
+    cdef tree.xmlCharEncoding enc
+    enc = tree.xmlDetectCharEncoding(buffer, size)
+    if enc == tree.XML_CHAR_ENCODING_UTF16LE:
+        if size >= 4 and (buffer[0] == <const_xmlChar> b'\xFF' and
+                          buffer[1] == <const_xmlChar> b'\xFE' and
+                          buffer[2] == 0 and buffer[3] == 0):
+            return "UTF-32LE"  # according to BOM
+        else:
+            return "UTF-16LE"
+    elif enc == tree.XML_CHAR_ENCODING_UTF16BE:
+        return "UTF-16BE"
+    elif enc == tree.XML_CHAR_ENCODING_UCS4LE:
+        return "UCS-4LE"
+    elif enc == tree.XML_CHAR_ENCODING_UCS4BE:
+        return "UCS-4BE"
+    elif enc == tree.XML_CHAR_ENCODING_NONE:
+        return NULL
+    else:
+        # returns a constant char*, no need to free it
+        return tree.xmlGetCharEncodingName(enc)
+
+# Python 3.12 removed support for "Py_UNICODE".
+if python.PY_VERSION_HEX < 0x030C0000:
+    _setupPythonUnicode()
+
+
+cdef unicode _find_PyUCS4EncodingName():
+    """
+    Find a suitable encoding for Py_UCS4 PyUnicode strings in libxml2.
+    """
+    ustring = "<xml>\U0001F92A</xml>"
+    cdef const xmlChar* buffer = <const xmlChar*> python.PyUnicode_DATA(ustring)
+    cdef Py_ssize_t py_buffer_len = python.PyUnicode_GET_LENGTH(ustring)
+
+    encoding_name = ''
+    cdef tree.xmlCharEncoding enc = tree.xmlDetectCharEncoding(buffer, py_buffer_len)
+    enchandler = tree.xmlGetCharEncodingHandler(enc)
+    if enchandler is not NULL:
+        try:
+            if enchandler.name:
+                encoding_name = enchandler.name.decode('UTF-8')
+        finally:
+            tree.xmlCharEncCloseFunc(enchandler)
+    else:
+        c_name = tree.xmlGetCharEncodingName(enc)
+        if c_name:
+            encoding_name = c_name.decode('UTF-8')
+
+
+    if encoding_name and not encoding_name.endswith('LE') and not encoding_name.endswith('BE'):
+        encoding_name += 'BE' if python.PY_BIG_ENDIAN else 'LE'
+    return encoding_name or None
+
+_pyucs4_encoding_name = _find_PyUCS4EncodingName()
+
+
+############################################################
+## support for file-like objects
+############################################################
+
+@cython.final
+@cython.internal
+cdef class _FileReaderContext:
+    cdef object _filelike
+    cdef object _encoding
+    cdef object _url
+    cdef object _bytes
+    cdef _ExceptionContext _exc_context
+    cdef Py_ssize_t _bytes_read
+    cdef char* _c_url
+    cdef bint _close_file_after_read
+
+    def __cinit__(self, filelike, exc_context not None, url, encoding=None, bint close_file=False):
+        self._exc_context = exc_context
+        self._filelike = filelike
+        self._close_file_after_read = close_file
+        self._encoding = encoding
+        if url is not None:
+            url = _encodeFilename(url)
+            self._c_url = _cstr(url)
+        self._url = url
+        self._bytes  = b''
+        self._bytes_read = 0
+
+    cdef _close_file(self):
+        if self._filelike is None or not self._close_file_after_read:
+            return
+        try:
+            close = self._filelike.close
+        except AttributeError:
+            close = None
+        finally:
+            self._filelike = None
+        if close is not None:
+            close()
+
+    cdef xmlparser.xmlParserInputBuffer* _createParserInputBuffer(self) noexcept:
+        cdef xmlparser.xmlParserInputBuffer* c_buffer = xmlparser.xmlAllocParserInputBuffer(0)
+        if c_buffer:
+            c_buffer.readcallback  = _readFilelikeParser
+            c_buffer.context = <python.PyObject*> self
+        return c_buffer
+
+    cdef xmlparser.xmlParserInput* _createParserInput(
+            self, xmlparser.xmlParserCtxt* ctxt) noexcept:
+        cdef xmlparser.xmlParserInputBuffer* c_buffer = self._createParserInputBuffer()
+        if not c_buffer:
+            return NULL
+        return xmlparser.xmlNewIOInputStream(ctxt, c_buffer, 0)
+
+    cdef tree.xmlDtd* _readDtd(self) noexcept:
+        cdef xmlparser.xmlParserInputBuffer* c_buffer = self._createParserInputBuffer()
+        if not c_buffer:
+            return NULL
+        with nogil:
+            return xmlparser.xmlIOParseDTD(NULL, c_buffer, 0)
+
+    cdef xmlDoc* _readDoc(self, xmlparser.xmlParserCtxt* ctxt, int options) noexcept:
+        cdef xmlDoc* result
+        cdef void* c_callback_context = <python.PyObject*> self
+        cdef char* c_encoding = _cstr(self._encoding) if self._encoding is not None else NULL
+
+        orig_options = ctxt.options
+        with nogil:
+            if ctxt.html:
+                result = htmlparser.htmlCtxtReadIO(
+                        ctxt, _readFilelikeParser, NULL, c_callback_context,
+                        self._c_url, c_encoding, options)
+                if result is not NULL:
+                    if _fixHtmlDictNames(ctxt.dict, result) < 0:
+                        tree.xmlFreeDoc(result)
+                        result = NULL
+            else:
+                result = xmlparser.xmlCtxtReadIO(
+                    ctxt, _readFilelikeParser, NULL, c_callback_context,
+                    self._c_url, c_encoding, options)
+        ctxt.options = orig_options # work around libxml2 problem
+
+        try:
+            self._close_file()
+        except:
+            self._exc_context._store_raised()
+        finally:
+            return result  # swallow any exceptions
+
+    cdef int copyToBuffer(self, char* c_buffer, int c_requested) noexcept:
+        cdef int c_byte_count = 0
+        cdef char* c_start
+        cdef Py_ssize_t byte_count, remaining
+        if self._bytes_read < 0:
+            return 0
+        try:
+            byte_count = python.PyBytes_GET_SIZE(self._bytes)
+            remaining  = byte_count - self._bytes_read
+            while c_requested > remaining:
+                c_start = _cstr(self._bytes) + self._bytes_read
+                cstring_h.memcpy(c_buffer, c_start, remaining)
+                c_byte_count += remaining
+                c_buffer += remaining
+                c_requested -= remaining
+
+                self._bytes = self._filelike.read(c_requested)
+                if not isinstance(self._bytes, bytes):
+                    if isinstance(self._bytes, unicode):
+                        if self._encoding is None:
+                            self._bytes = (<unicode>self._bytes).encode('utf8')
+                        else:
+                            self._bytes = python.PyUnicode_AsEncodedString(
+                                self._bytes, _cstr(self._encoding), NULL)
+                    else:
+                        self._close_file()
+                        raise TypeError, \
+                            "reading from file-like objects must return byte strings or unicode strings"
+
+                remaining = python.PyBytes_GET_SIZE(self._bytes)
+                if remaining == 0:
+                    self._bytes_read = -1
+                    self._close_file()
+                    return c_byte_count
+                self._bytes_read = 0
+
+            if c_requested > 0:
+                c_start = _cstr(self._bytes) + self._bytes_read
+                cstring_h.memcpy(c_buffer, c_start, c_requested)
+                c_byte_count += c_requested
+                self._bytes_read += c_requested
+        except:
+            c_byte_count = -1
+            self._exc_context._store_raised()
+            try:
+                self._close_file()
+            except:
+                self._exc_context._store_raised()
+        finally:
+            return c_byte_count  # swallow any exceptions
+
+cdef int _readFilelikeParser(void* ctxt, char* c_buffer, int c_size) noexcept with gil:
+    return (<_FileReaderContext>ctxt).copyToBuffer(c_buffer, c_size)
+
+
+############################################################
+## support for custom document loaders
+############################################################
+
+cdef xmlparser.xmlParserInput* _local_resolver(const_char* c_url, const_char* c_pubid,
+                                               xmlparser.xmlParserCtxt* c_context) noexcept with gil:
+    cdef _ResolverContext context
+    cdef xmlparser.xmlParserInput* c_input
+    cdef _InputDocument doc_ref
+    cdef _FileReaderContext file_context
+    # if there is no _ParserContext associated with the xmlParserCtxt
+    # passed, check to see if the thread state object has an implied
+    # context.
+    if c_context._private is not NULL:
+        context = <_ResolverContext>c_context._private
+    else:
+        context = __GLOBAL_PARSER_CONTEXT.findImpliedContext()
+
+    if context is None:
+        if __DEFAULT_ENTITY_LOADER is NULL:
+            return NULL
+        with nogil:
+            # free the GIL as we might do serious I/O here (e.g. HTTP)
+            c_input = __DEFAULT_ENTITY_LOADER(c_url, c_pubid, c_context)
+        return c_input
+
+    try:
+        if c_url is NULL:
+            url = None
+        else:
+            # parsing a related document (DTD etc.) => UTF-8 encoded URL?
+            url = _decodeFilename(<const_xmlChar*>c_url)
+        if c_pubid is NULL:
+            pubid = None
+        else:
+            pubid = funicode(<const_xmlChar*>c_pubid) # always UTF-8
+
+        doc_ref = context._resolvers.resolve(url, pubid, context)
+    except:
+        context._store_raised()
+        return NULL
+
+    if doc_ref is not None:
+        if doc_ref._type == PARSER_DATA_STRING:
+            data = doc_ref._data_bytes
+            filename = doc_ref._filename
+            if not filename:
+                filename = None
+            elif not isinstance(filename, bytes):
+                # most likely a text URL
+                filename = filename.encode('utf8')
+                if not isinstance(filename, bytes):
+                    filename = None
+
+            if tree.LIBXML_VERSION >= 21400:
+                c_filename = <char *>tree.xmlStrdup(_xcstr(filename)) if filename is not None else NULL
+                c_input = xmlparser.xmlNewInputFromMemory(
+                    c_filename, _xcstr(data), <size_t> python.PyBytes_GET_SIZE(data), 0)
+            else:
+                c_input = xmlparser.xmlNewInputStream(c_context)
+                if c_input is not NULL:
+                    if filename is not None:
+                        c_input.filename = <char *>tree.xmlStrdup(_xcstr(filename))
+                    c_input.base = _xcstr(data)
+                    c_input.length = python.PyBytes_GET_SIZE(data)
+                    c_input.cur = c_input.base
+                    c_input.end = c_input.base + c_input.length
+        elif doc_ref._type == PARSER_DATA_FILENAME:
+            data = None
+            c_filename = _cstr(doc_ref._filename)
+            with nogil:
+                # free the GIL as we might do serious I/O here
+                c_input = xmlparser.xmlNewInputFromFile(
+                    c_context, c_filename)
+        elif doc_ref._type == PARSER_DATA_FILE:
+            file_context = _FileReaderContext(doc_ref._file, context, url,
+                                              None, doc_ref._close_file)
+            c_input = file_context._createParserInput(c_context)
+            data = file_context
+        else:
+            data = None
+            c_input = NULL
+
+        if data is not None:
+            context._storage.add(data)
+        if c_input is not NULL:
+            return c_input
+
+    if __DEFAULT_ENTITY_LOADER is NULL:
+        return NULL
+
+    with nogil:
+        # free the GIL as we might do serious I/O here (e.g. HTTP)
+        c_input = __DEFAULT_ENTITY_LOADER(c_url, c_pubid, c_context)
+    return c_input
+
+cdef xmlparser.xmlExternalEntityLoader __DEFAULT_ENTITY_LOADER
+__DEFAULT_ENTITY_LOADER = xmlparser.xmlGetExternalEntityLoader()
+
+
+cdef xmlparser.xmlExternalEntityLoader _register_document_loader() noexcept nogil:
+    cdef xmlparser.xmlExternalEntityLoader old = xmlparser.xmlGetExternalEntityLoader()
+    xmlparser.xmlSetExternalEntityLoader(<xmlparser.xmlExternalEntityLoader> _local_resolver)
+    return old
+
+cdef void _reset_document_loader(xmlparser.xmlExternalEntityLoader old) noexcept nogil:
+    xmlparser.xmlSetExternalEntityLoader(old)
+
+
+############################################################
+## Parsers
+############################################################
+
+@cython.no_gc_clear  # May have to call "self._validator.disconnect()" on dealloc.
+@cython.internal
+cdef class _ParserContext(_ResolverContext):
+    cdef _ErrorLog _error_log
+    cdef _ParserSchemaValidationContext _validator
+    cdef xmlparser.xmlParserCtxt* _c_ctxt
+    cdef xmlparser.xmlExternalEntityLoader _orig_loader
+    cdef python.PyThread_type_lock _lock
+    cdef _Document _doc
+    cdef bint _collect_ids
+
+    def __cinit__(self):
+        self._collect_ids = True
+        if config.ENABLE_THREADING:
+            self._lock = python.PyThread_allocate_lock()
+        self._error_log = _ErrorLog()
+
+    def __dealloc__(self):
+        if config.ENABLE_THREADING and self._lock is not NULL:
+            python.PyThread_free_lock(self._lock)
+            self._lock = NULL
+        if self._c_ctxt is not NULL:
+            if <void*>self._validator is not NULL and self._validator is not None:
+                # If the parser was not closed correctly (e.g. interrupted iterparse()),
+                # and the schema validator wasn't freed and cleaned up yet, the libxml2 SAX
+                # validator plug might still be in place, which will make xmlFreeParserCtxt()
+                # crash when trying to xmlFree() a static SAX handler.
+                # Thus, make sure we disconnect the handler interceptor here at the latest.
+                self._validator.disconnect()
+            xmlparser.xmlFreeParserCtxt(self._c_ctxt)
+
+    cdef _ParserContext _copy(self):
+        cdef _ParserContext context
+        context = self.__class__()
+        context._collect_ids = self._collect_ids
+        context._validator = self._validator.copy()
+        _initParserContext(context, self._resolvers._copy(), NULL)
+        return context
+
+    cdef void _initParserContext(self, xmlparser.xmlParserCtxt* c_ctxt) noexcept:
+        """
+        Connects the libxml2-level context to the lxml-level parser context.
+        """
+        self._c_ctxt = c_ctxt
+        c_ctxt._private = <void*>self
+
+    cdef void _resetParserContext(self) noexcept:
+        if self._c_ctxt is not NULL:
+            if self._c_ctxt.html:
+                htmlparser.htmlCtxtReset(self._c_ctxt)
+                self._c_ctxt.disableSAX = 0 # work around bug in libxml2
+            else:
+                xmlparser.xmlClearParserCtxt(self._c_ctxt)
+                # work around bug in libxml2 [2.9.10 .. 2.9.14]:
+                # https://gitlab.gnome.org/GNOME/libxml2/-/issues/378
+                self._c_ctxt.nsNr = 0
+
+    cdef int prepare(self, bint set_document_loader=True) except -1:
+        cdef int result
+        if config.ENABLE_THREADING and self._lock is not NULL:
+            with nogil:
+                result = python.PyThread_acquire_lock(
+                    self._lock, python.WAIT_LOCK)
+            if result == 0:
+                raise ParserError, "parser locking failed"
+        self._error_log.clear()
+        self._doc = None
+        # Connect the lxml error log with libxml2's error handling. In the case of parsing
+        # HTML, ctxt->sax is not set to null, so this always works. The libxml2 function
+        # that does this is htmlInitParserCtxt in HTMLparser.c. For HTML (and possibly XML
+        # too), libxml2's SAX's serror is set to be the place where errors are sent when
+        # schannel is set to ctxt->sax->serror in xmlCtxtErrMemory in libxml2's
+        # parserInternals.c.
+        # Need a cast here because older libxml2 releases do not use 'const' in the functype.
+        self._c_ctxt.sax.serror = <xmlerror.xmlStructuredErrorFunc> _receiveParserError
+        self._orig_loader = _register_document_loader() if set_document_loader else NULL
+        if self._validator is not None:
+            self._validator.connect(self._c_ctxt, self._error_log)
+        return 0
+
+    cdef int cleanup(self) except -1:
+        if self._orig_loader is not NULL:
+            _reset_document_loader(self._orig_loader)
+        try:
+            if self._validator is not None:
+                self._validator.disconnect()
+            self._resetParserContext()
+            self.clear()
+            self._doc = None
+            self._c_ctxt.sax.serror = NULL
+        finally:
+            if config.ENABLE_THREADING and self._lock is not NULL:
+                python.PyThread_release_lock(self._lock)
+        return 0
+
+    cdef object _handleParseResult(self, _BaseParser parser,
+                                   xmlDoc* result, filename):
+        c_doc = self._handleParseResultDoc(parser, result, filename)
+        if self._doc is not None and self._doc._c_doc is c_doc:
+            return self._doc
+        else:
+            return _documentFactory(c_doc, parser)
+
+    cdef xmlDoc* _handleParseResultDoc(self, _BaseParser parser,
+                                       xmlDoc* result, filename) except NULL:
+        recover = parser._parse_options & xmlparser.XML_PARSE_RECOVER
+        return _handleParseResult(self, self._c_ctxt, result,
+                                  filename, recover,
+                                  free_doc=self._doc is None)
+
+cdef _initParserContext(_ParserContext context,
+                        _ResolverRegistry resolvers,
+                        xmlparser.xmlParserCtxt* c_ctxt):
+    _initResolverContext(context, resolvers)
+    if c_ctxt is not NULL:
+        context._initParserContext(c_ctxt)
+
+cdef void _forwardParserError(xmlparser.xmlParserCtxt* _parser_context, const xmlerror.xmlError* error) noexcept with gil:
+    """
+    Add an error created by libxml2 to the lxml-level error_log.
+    """
+    (<_ParserContext>_parser_context._private)._error_log._receive(error)
+
+cdef void _receiveParserError(void* c_context, const xmlerror.xmlError* error) noexcept nogil:
+    if __DEBUG:
+        if c_context is NULL or (<xmlparser.xmlParserCtxt*>c_context)._private is NULL:
+            _forwardError(NULL, error)
+        else:
+            _forwardParserError(<xmlparser.xmlParserCtxt*>c_context, error)
+
+cdef int _raiseParseError(xmlparser.xmlParserCtxt* ctxt, filename,
+                          _ErrorLog error_log) except -1:
+    if filename is not None and \
+           ctxt.lastError.domain == xmlerror.XML_FROM_IO:
+        if isinstance(filename, bytes):
+            filename = _decodeFilenameWithLength(
+                <bytes>filename, len(<bytes>filename))
+        if ctxt.lastError.message is not NULL:
+            try:
+                message = ctxt.lastError.message.decode('utf-8')
+            except UnicodeDecodeError:
+                # the filename may be in there => play it safe
+                message = ctxt.lastError.message.decode('iso8859-1')
+            message = f"Error reading file '{filename}': {message.strip()}"
+        else:
+            message = f"Error reading '{filename}'"
+        raise IOError, message
+    elif error_log:
+        raise error_log._buildParseException(
+            XMLSyntaxError, "Document is not well formed")
+    elif ctxt.lastError.message is not NULL:
+        message = ctxt.lastError.message.strip()
+        code = ctxt.lastError.code
+        line = ctxt.lastError.line
+        column = ctxt.lastError.int2
+        if ctxt.lastError.line > 0:
+            message = f"line {line}: {message}"
+        raise XMLSyntaxError(message, code, line, column, filename)
+    else:
+        raise XMLSyntaxError(None, xmlerror.XML_ERR_INTERNAL_ERROR, 0, 0,
+                             filename)
+
+cdef xmlDoc* _handleParseResult(_ParserContext context,
+                                xmlparser.xmlParserCtxt* c_ctxt,
+                                xmlDoc* result, filename,
+                                bint recover, bint free_doc) except NULL:
+    # The C-level argument xmlDoc* result is passed in as NULL if the parser was not able
+    # to parse the document.
+    cdef bint well_formed
+    if result is not NULL:
+        __GLOBAL_PARSER_CONTEXT.initDocDict(result)
+
+    if c_ctxt.myDoc is not NULL:
+        if c_ctxt.myDoc is not result:
+            __GLOBAL_PARSER_CONTEXT.initDocDict(c_ctxt.myDoc)
+            tree.xmlFreeDoc(c_ctxt.myDoc)
+        c_ctxt.myDoc = NULL
+
+    if result is not NULL:
+        # "wellFormed" in libxml2 is 0 if the parser found fatal errors. It still returns a
+        # parse result document if 'recover=True'. Here, we determine if we can present
+        # the document to the user or consider it incorrect or broken enough to raise an error.
+        if (context._validator is not None and
+                not context._validator.isvalid()):
+            well_formed = 0  # actually not 'valid', but anyway ...
+        elif (not c_ctxt.wellFormed and not c_ctxt.html and
+                c_ctxt.charset == tree.XML_CHAR_ENCODING_8859_1 and
+                [1 for error in context._error_log
+                 if error.type == ErrorTypes.ERR_INVALID_CHAR]):
+            # An encoding error occurred and libxml2 switched from UTF-8
+            # input to (undecoded) Latin-1, at some arbitrary point in the
+            # document.  Better raise an error than allowing for a broken
+            # tree with mixed encodings. This is fixed in libxml2 2.12.
+            well_formed = 0
+        elif recover or (c_ctxt.wellFormed and
+                         c_ctxt.lastError.level < xmlerror.XML_ERR_ERROR):
+            well_formed = 1
+        elif not c_ctxt.replaceEntities and not c_ctxt.validate \
+                 and context is not None:
+            # in this mode, we ignore errors about undefined entities
+            for error in context._error_log.filter_from_errors():
+                if error.type != ErrorTypes.WAR_UNDECLARED_ENTITY and \
+                       error.type != ErrorTypes.ERR_UNDECLARED_ENTITY:
+                    well_formed = 0
+                    break
+            else:
+                well_formed = 1
+        else:
+            well_formed = 0
+
+        if not well_formed:
+            if free_doc:
+                tree.xmlFreeDoc(result)
+            result = NULL
+
+    if context is not None and context._has_raised():
+        if result is not NULL:
+            if free_doc:
+                tree.xmlFreeDoc(result)
+            result = NULL
+        context._raise_if_stored()
+
+    if result is NULL:
+        if context is not None:
+            _raiseParseError(c_ctxt, filename, context._error_log)
+        else:
+            _raiseParseError(c_ctxt, filename, None)
+    else:
+        if result.URL is NULL and filename is not None:
+            result.URL = tree.xmlStrdup(_xcstr(filename))
+        if result.encoding is NULL:
+            result.encoding = tree.xmlStrdup(<unsigned char*>"UTF-8")
+
+    if context._validator is not None and \
+           context._validator._add_default_attributes:
+        # we currently need to do this here as libxml2 does not
+        # support inserting default attributes during parse-time
+        # validation
+        context._validator.inject_default_attributes(result)
+
+    return result
+
+cdef int _fixHtmlDictNames(tree.xmlDict* c_dict, xmlDoc* c_doc) noexcept nogil:
+    cdef xmlNode* c_node
+    if c_doc is NULL:
+        return 0
+    c_node = c_doc.children
+    tree.BEGIN_FOR_EACH_ELEMENT_FROM(<xmlNode*>c_doc, c_node, 1)
+    if c_node.type == tree.XML_ELEMENT_NODE:
+        if _fixHtmlDictNodeNames(c_dict, c_node) < 0:
+            return -1
+    tree.END_FOR_EACH_ELEMENT_FROM(c_node)
+    return 0
+
+cdef int _fixHtmlDictSubtreeNames(tree.xmlDict* c_dict, xmlDoc* c_doc,
+                                  xmlNode* c_start_node) noexcept nogil:
+    """
+    Move names to the dict, iterating in document order, starting at
+    c_start_node. This is used in incremental parsing after each chunk.
+    """
+    cdef xmlNode* c_node
+    if not c_doc:
+        return 0
+    if not c_start_node:
+        return _fixHtmlDictNames(c_dict, c_doc)
+    c_node = c_start_node
+    tree.BEGIN_FOR_EACH_ELEMENT_FROM(<xmlNode*>c_doc, c_node, 1)
+    if c_node.type == tree.XML_ELEMENT_NODE:
+        if _fixHtmlDictNodeNames(c_dict, c_node) < 0:
+            return -1
+    tree.END_FOR_EACH_ELEMENT_FROM(c_node)
+    return 0
+
+cdef inline int _fixHtmlDictNodeNames(tree.xmlDict* c_dict,
+                                      xmlNode* c_node) noexcept nogil:
+    cdef xmlNode* c_attr
+    c_name = tree.xmlDictLookup(c_dict, c_node.name, -1)
+    if c_name is NULL:
+        return -1
+    if c_name is not c_node.name:
+        tree.xmlFree(<char*>c_node.name)
+        c_node.name = c_name
+    c_attr = <xmlNode*>c_node.properties
+    while c_attr is not NULL:
+        c_name = tree.xmlDictLookup(c_dict, c_attr.name, -1)
+        if c_name is NULL:
+            return -1
+        if c_name is not c_attr.name:
+            tree.xmlFree(<char*>c_attr.name)
+            c_attr.name = c_name
+        c_attr = c_attr.next
+    return 0
+
+
+@cython.internal
+cdef class _BaseParser:
+    cdef ElementClassLookup _class_lookup
+    cdef _ResolverRegistry _resolvers
+    cdef _ParserContext _parser_context
+    cdef _ParserContext _push_parser_context
+    cdef int _parse_options
+    cdef bint _for_html
+    cdef bint _remove_comments
+    cdef bint _remove_pis
+    cdef bint _strip_cdata
+    cdef bint _collect_ids
+    cdef bint _resolve_external_entities
+    cdef XMLSchema _schema
+    cdef bytes _filename
+    cdef readonly object target
+    cdef object _default_encoding
+    cdef tuple _events_to_collect  # (event_types, tag)
+
+    def __init__(self, int parse_options, bint for_html, XMLSchema schema,
+                 remove_comments, remove_pis, strip_cdata, collect_ids,
+                 target, encoding, bint resolve_external_entities=True):
+        cdef tree.xmlCharEncodingHandler* enchandler
+        cdef int c_encoding
+        if not isinstance(self, (XMLParser, HTMLParser)):
+            raise TypeError, "This class cannot be instantiated"
+
+        if not collect_ids and tree.LIBXML_VERSION >= 21500:
+            parse_options |= xmlparser.XML_PARSE_SKIP_IDS
+
+        self._parse_options = parse_options
+        self.target = target
+        self._for_html = for_html
+        self._remove_comments = remove_comments
+        self._remove_pis = remove_pis
+        self._strip_cdata = strip_cdata
+        self._collect_ids = collect_ids
+        self._resolve_external_entities = resolve_external_entities
+        self._schema = schema
+
+        self._resolvers = _ResolverRegistry()
+
+        if encoding is None:
+            self._default_encoding = None
+        else:
+            encoding = _utf8(encoding)
+            enchandler = tree.xmlFindCharEncodingHandler(_cstr(encoding))
+            if enchandler is NULL:
+                raise LookupError, f"unknown encoding: '{encoding}'"
+            tree.xmlCharEncCloseFunc(enchandler)
+            self._default_encoding = encoding
+
+    cdef _setBaseURL(self, base_url):
+        self._filename = _encodeFilename(base_url)
+
+    cdef _collectEvents(self, event_types, tag):
+        if event_types is None:
+            event_types = ()
+        else:
+            event_types = tuple(set(event_types))
+            _buildParseEventFilter(event_types)  # purely for validation
+        self._events_to_collect = (event_types, tag)
+
+    cdef _ParserContext _getParserContext(self):
+        cdef xmlparser.xmlParserCtxt* pctxt
+        if self._parser_context is None:
+            self._parser_context = self._createContext(self.target, None)
+            self._parser_context._collect_ids = self._collect_ids
+            if self._schema is not None:
+                self._parser_context._validator = \
+                    self._schema._newSaxValidator(
+                        self._parse_options & xmlparser.XML_PARSE_DTDATTR)
+            pctxt = self._newParserCtxt()
+            _initParserContext(self._parser_context, self._resolvers, pctxt)
+            self._configureSaxContext(pctxt)
+        return self._parser_context
+
+    cdef _ParserContext _getPushParserContext(self):
+        cdef xmlparser.xmlParserCtxt* pctxt
+        if self._push_parser_context is None:
+            self._push_parser_context = self._createContext(
+                self.target, self._events_to_collect)
+            self._push_parser_context._collect_ids = self._collect_ids
+            if self._schema is not None:
+                self._push_parser_context._validator = \
+                    self._schema._newSaxValidator(
+                        self._parse_options & xmlparser.XML_PARSE_DTDATTR)
+            pctxt = self._newPushParserCtxt()
+            _initParserContext(
+                self._push_parser_context, self._resolvers, pctxt)
+            self._configureSaxContext(pctxt)
+        return self._push_parser_context
+
+    cdef _ParserContext _createContext(self, target, events_to_collect):
+        """
+        This method creates and configures the lxml-level parser.
+        """
+        cdef _SaxParserContext sax_context
+        if target is not None:
+            sax_context = _TargetParserContext(self)
+            (<_TargetParserContext>sax_context)._setTarget(target)
+        elif events_to_collect:
+            sax_context = _SaxParserContext(self)
+        else:
+            # nothing special to configure
+            return _ParserContext()
+        if events_to_collect:
+            events, tag = events_to_collect
+            sax_context._setEventFilter(events, tag)
+        return sax_context
+
+    @cython.final
+    cdef int _configureSaxContext(self, xmlparser.xmlParserCtxt* pctxt) except -1:
+        if self._remove_comments:
+            pctxt.sax.comment = NULL
+        if self._remove_pis:
+            pctxt.sax.processingInstruction = NULL
+        if self._strip_cdata:
+            # hard switch-off for CDATA nodes => makes them plain text
+            pctxt.sax.cdataBlock = NULL
+        if not self._resolve_external_entities:
+            pctxt.sax.getEntity = _getInternalEntityOnly
+            pctxt.sax.getParameterEntity = NULL  # Disable parameter entities completely.
+
+    cdef int _registerHtmlErrorHandler(self, xmlparser.xmlParserCtxt* c_ctxt) except -1:
+        cdef xmlparser.xmlSAXHandler* sax = c_ctxt.sax
+        if sax is not NULL and sax.initialized and sax.initialized != xmlparser.XML_SAX2_MAGIC:
+            # need to extend SAX1 context to SAX2 to get proper error reports
+            if <xmlparser.xmlSAXHandlerV1*>sax is &htmlparser.htmlDefaultSAXHandler:
+                sax = <xmlparser.xmlSAXHandler*> tree.xmlMalloc(sizeof(xmlparser.xmlSAXHandler))
+                if sax is NULL:
+                    raise MemoryError()
+                cstring_h.memcpy(sax, &htmlparser.htmlDefaultSAXHandler,
+                                 sizeof(htmlparser.htmlDefaultSAXHandler))
+                c_ctxt.sax = sax
+            sax.initialized = xmlparser.XML_SAX2_MAGIC
+            # Need a cast here because older libxml2 releases do not use 'const' in the functype.
+            sax.serror = <xmlerror.xmlStructuredErrorFunc> _receiveParserError
+            sax.startElementNs = NULL
+            sax.endElementNs = NULL
+            sax._private = NULL
+        return 0
+
+    cdef xmlparser.xmlParserCtxt* _newParserCtxt(self) except NULL:
+        """
+        Create and initialise a libxml2-level parser context.
+        """
+        cdef xmlparser.xmlParserCtxt* c_ctxt
+        if self._for_html:
+            c_ctxt = htmlparser.htmlCreateMemoryParserCtxt('dummy', 5)
+            if c_ctxt is not NULL:
+                self._registerHtmlErrorHandler(c_ctxt)
+        else:
+            c_ctxt = xmlparser.xmlNewParserCtxt()
+        if c_ctxt is NULL:
+            raise MemoryError
+        c_ctxt.sax.startDocument = _initSaxDocument
+        return c_ctxt
+
+    cdef xmlparser.xmlParserCtxt* _newPushParserCtxt(self) except NULL:
+        cdef xmlparser.xmlParserCtxt* c_ctxt
+        cdef char* c_filename = _cstr(self._filename) if self._filename is not None else NULL
+        if self._for_html:
+            c_ctxt = htmlparser.htmlCreatePushParserCtxt(
+                NULL, NULL, NULL, 0, c_filename, tree.XML_CHAR_ENCODING_NONE)
+            if c_ctxt is not NULL:
+                self._registerHtmlErrorHandler(c_ctxt)
+                htmlparser.htmlCtxtUseOptions(c_ctxt, self._parse_options)
+        else:
+            c_ctxt = xmlparser.xmlCreatePushParserCtxt(
+                NULL, NULL, NULL, 0, c_filename)
+            if c_ctxt is not NULL:
+                xmlparser.xmlCtxtUseOptions(c_ctxt, self._parse_options)
+        if c_ctxt is NULL:
+            raise MemoryError()
+        c_ctxt.sax.startDocument = _initSaxDocument
+        return c_ctxt
+
+    @property
+    def error_log(self):
+        """The error log of the last parser run.
+        """
+        cdef _ParserContext context
+        context = self._getParserContext()
+        return context._error_log.copy()
+
+    @property
+    def resolvers(self):
+        """The custom resolver registry of this parser."""
+        return self._resolvers
+
+    @property
+    def version(self):
+        """The version of the underlying XML parser."""
+        return "libxml2 %d.%d.%d" % LIBXML_VERSION
+
+    def set_element_class_lookup(self, ElementClassLookup lookup = None):
+        """set_element_class_lookup(self, lookup = None)
+
+        Set a lookup scheme for element classes generated from this parser.
+
+        Reset it by passing None or nothing.
+        """
+        self._class_lookup = lookup
+
+    cdef _BaseParser _copy(self):
+        "Create a new parser with the same configuration."
+        cdef _BaseParser parser
+        parser = self.__class__()
+        parser._parse_options = self._parse_options
+        parser._for_html = self._for_html
+        parser._remove_comments = self._remove_comments
+        parser._remove_pis = self._remove_pis
+        parser._strip_cdata = self._strip_cdata
+        parser._filename = self._filename
+        parser._resolvers = self._resolvers
+        parser.target = self.target
+        parser._class_lookup  = self._class_lookup
+        parser._default_encoding = self._default_encoding
+        parser._schema = self._schema
+        parser._events_to_collect = self._events_to_collect
+        return parser
+
+    def copy(self):
+        """copy(self)
+
+        Create a new parser with the same configuration.
+        """
+        return self._copy()
+
+    def makeelement(self, _tag, attrib=None, nsmap=None, **_extra):
+        """makeelement(self, _tag, attrib=None, nsmap=None, **_extra)
+
+        Creates a new element associated with this parser.
+        """
+        return _makeElement(_tag, NULL, None, self, None, None,
+                            attrib, nsmap, _extra)
+
+    # internal parser methods
+
+    cdef xmlDoc* _parseUnicodeDoc(self, utext, char* c_filename) except NULL:
+        """Parse unicode document, share dictionary if possible.
+        """
+        cdef _ParserContext context
+        cdef xmlDoc* result
+        cdef xmlparser.xmlParserCtxt* pctxt
+        cdef Py_ssize_t py_buffer_len
+        cdef int buffer_len, c_kind
+        cdef const_char* c_text
+        cdef const_char* c_encoding = _PY_UNICODE_ENCODING
+        if python.PyUnicode_IS_READY(utext):
+            # PEP-393 string
+            c_text = <const_char*>python.PyUnicode_DATA(utext)
+            py_buffer_len = python.PyUnicode_GET_LENGTH(utext)
+            c_kind = python.PyUnicode_KIND(utext)
+            if c_kind == 1:
+                if python.PyUnicode_MAX_CHAR_VALUE(utext) <= 127:
+                    c_encoding = 'UTF-8'
+                else:
+                    c_encoding = 'ISO-8859-1'
+            elif c_kind == 2:
+                py_buffer_len *= 2
+                if python.PY_BIG_ENDIAN:
+                    c_encoding = 'UTF-16BE'  # actually UCS-2
+                else:
+                    c_encoding = 'UTF-16LE'  # actually UCS-2
+            elif c_kind == 4:
+                py_buffer_len *= 4
+                if python.PY_BIG_ENDIAN:
+                    c_encoding = 'UTF-32BE'  # actually UCS-4
+                else:
+                    c_encoding = 'UTF-32LE'  # actually UCS-4
+            else:
+                assert False, f"Illegal Unicode kind {c_kind}"
+        else:
+            # old Py_UNICODE string
+            py_buffer_len = python.PyUnicode_GET_DATA_SIZE(utext)
+            c_text = python.PyUnicode_AS_DATA(utext)
+        assert 0 <= py_buffer_len <= limits.INT_MAX
+        buffer_len = py_buffer_len
+
+        context = self._getParserContext()
+        context.prepare()
+        try:
+            pctxt = context._c_ctxt
+            __GLOBAL_PARSER_CONTEXT.initParserDict(pctxt)
+            orig_options = pctxt.options
+            with nogil:
+                if self._for_html:
+                    result = htmlparser.htmlCtxtReadMemory(
+                        pctxt, c_text, buffer_len, c_filename, c_encoding,
+                        self._parse_options)
+                    if result is not NULL:
+                        if _fixHtmlDictNames(pctxt.dict, result) < 0:
+                            tree.xmlFreeDoc(result)
+                            result = NULL
+                else:
+                    result = xmlparser.xmlCtxtReadMemory(
+                        pctxt, c_text, buffer_len, c_filename, c_encoding,
+                        self._parse_options)
+            pctxt.options = orig_options # work around libxml2 problem
+
+            return context._handleParseResultDoc(self, result, None)
+        finally:
+            context.cleanup()
+
+    cdef xmlDoc* _parseDoc(self, const char* c_text, int c_len, char* c_filename) except NULL:
+        """Parse document, share dictionary if possible.
+        """
+        cdef _ParserContext context
+        cdef xmlDoc* result
+        cdef xmlparser.xmlParserCtxt* pctxt
+        cdef char* c_encoding
+        cdef tree.xmlCharEncoding enc
+        context = self._getParserContext()
+        context.prepare()
+        try:
+            pctxt = context._c_ctxt
+            __GLOBAL_PARSER_CONTEXT.initParserDict(pctxt)
+
+            if self._default_encoding is None:
+                c_encoding = NULL
+                # libxml2 (at least 2.9.3) does not recognise UTF-32 BOMs
+                # NOTE: limit to problematic cases because it changes character offsets
+                if c_len >= 4 and (c_text[0] == b'\xFF' and c_text[1] == b'\xFE' and
+                                   c_text[2] == 0 and c_text[3] == 0):
+                    c_encoding = "UTF-32LE"
+                    c_text += 4
+                    c_len -= 4
+                elif c_len >= 4 and (c_text[0] == 0 and c_text[1] == 0 and
+                                     c_text[2] == b'\xFE' and c_text[3] == b'\xFF'):
+                    c_encoding = "UTF-32BE"
+                    c_text += 4
+                    c_len -= 4
+                else:
+                    # no BOM => try to determine encoding
+                    enc = tree.xmlDetectCharEncoding(<const_xmlChar*>c_text, c_len)
+                    if enc == tree.XML_CHAR_ENCODING_UCS4LE:
+                        c_encoding = 'UTF-32LE'
+                    elif enc == tree.XML_CHAR_ENCODING_UCS4BE:
+                        c_encoding = 'UTF-32BE'
+            else:
+                c_encoding = _cstr(self._default_encoding)
+
+            orig_options = pctxt.options
+            with nogil:
+                if self._for_html:
+                    result = htmlparser.htmlCtxtReadMemory(
+                        pctxt, c_text, c_len, c_filename,
+                        c_encoding, self._parse_options)
+                    if result is not NULL:
+                        if _fixHtmlDictNames(pctxt.dict, result) < 0:
+                            tree.xmlFreeDoc(result)
+                            result = NULL
+                else:
+                    result = xmlparser.xmlCtxtReadMemory(
+                        pctxt, c_text, c_len, c_filename,
+                        c_encoding, self._parse_options)
+            pctxt.options = orig_options # work around libxml2 problem
+
+            return context._handleParseResultDoc(self, result, None)
+        finally:
+            context.cleanup()
+
+    cdef xmlDoc* _parseDocFromFile(self, char* c_filename) except NULL:
+        cdef _ParserContext context
+        cdef xmlDoc* result
+        cdef xmlparser.xmlParserCtxt* pctxt
+        cdef char* c_encoding
+        result = NULL
+
+        context = self._getParserContext()
+        context.prepare()
+        try:
+            pctxt = context._c_ctxt
+            __GLOBAL_PARSER_CONTEXT.initParserDict(pctxt)
+
+            if self._default_encoding is None:
+                c_encoding = NULL
+            else:
+                c_encoding = _cstr(self._default_encoding)
+
+            orig_options = pctxt.options
+            with nogil:
+                if self._for_html:
+                    result = htmlparser.htmlCtxtReadFile(
+                        pctxt, c_filename, c_encoding, self._parse_options)
+                    if result is not NULL:
+                        if _fixHtmlDictNames(pctxt.dict, result) < 0:
+                            tree.xmlFreeDoc(result)
+                            result = NULL
+                else:
+                    result = xmlparser.xmlCtxtReadFile(
+                        pctxt, c_filename, c_encoding, self._parse_options)
+            pctxt.options = orig_options # work around libxml2 problem
+
+            return context._handleParseResultDoc(self, result, c_filename)
+        finally:
+            context.cleanup()
+
+    cdef xmlDoc* _parseDocFromFilelike(self, filelike, filename,
+                                       encoding) except NULL:
+        cdef _ParserContext context
+        cdef _FileReaderContext file_context
+        cdef xmlDoc* result
+        cdef xmlparser.xmlParserCtxt* pctxt
+        cdef char* c_filename
+        if not filename:
+            filename = None
+
+        context = self._getParserContext()
+        context.prepare()
+        try:
+            pctxt = context._c_ctxt
+            __GLOBAL_PARSER_CONTEXT.initParserDict(pctxt)
+            file_context = _FileReaderContext(
+                filelike, context, filename,
+                encoding or self._default_encoding)
+            result = file_context._readDoc(pctxt, self._parse_options)
+
+            return context._handleParseResultDoc(
+                self, result, filename)
+        finally:
+            context.cleanup()
+
+
+cdef tree.xmlEntity* _getInternalEntityOnly(void* ctxt, const_xmlChar* name) noexcept nogil:
+    """
+    Callback function to intercept the entity resolution when external entity loading is disabled.
+    """
+    cdef tree.xmlEntity* entity = xmlparser.xmlSAX2GetEntity(ctxt, name)
+    if not entity:
+        return NULL
+    if entity.etype not in (
+            tree.xmlEntityType.XML_EXTERNAL_GENERAL_PARSED_ENTITY,
+            tree.xmlEntityType.XML_EXTERNAL_GENERAL_UNPARSED_ENTITY,
+            tree.xmlEntityType.XML_EXTERNAL_PARAMETER_ENTITY):
+        return entity
+
+    # Reject all external entities and fail the parsing instead. There is currently
+    # no way in libxml2 to just prevent the entity resolution in this case.
+    cdef xmlerror.xmlError c_error
+    cdef xmlerror.xmlStructuredErrorFunc err_func
+    cdef xmlparser.xmlParserInput* parser_input
+    cdef void* err_context
+
+    c_ctxt = <xmlparser.xmlParserCtxt *> ctxt
+    err_func = xmlerror.xmlStructuredError
+    if err_func:
+        parser_input = c_ctxt.input
+        # Copied from xmlVErrParser() in libxml2: get current input from stack.
+        if parser_input and parser_input.filename is NULL and c_ctxt.inputNr > 1:
+            parser_input = c_ctxt.inputTab[c_ctxt.inputNr - 2]
+
+        c_error = xmlerror.xmlError(
+            domain=xmlerror.xmlErrorDomain.XML_FROM_PARSER,
+            code=xmlerror.xmlParserErrors.XML_ERR_EXT_ENTITY_STANDALONE,
+            level=xmlerror.xmlErrorLevel.XML_ERR_FATAL,
+            message=b"External entity resolution is disabled for security reasons "
+                    b"when resolving '&%s;'. Use 'XMLParser(resolve_entities=True)' "
+                    b"if you consider it safe to enable it.",
+            file=parser_input.filename,
+            node=entity,
+            str1=<char*> name,
+            str2=NULL,
+            str3=NULL,
+            line=parser_input.line if parser_input else 0,
+            int1=0,
+            int2=parser_input.col if parser_input else 0,
+        )
+        err_context = xmlerror.xmlStructuredErrorContext
+        err_func(err_context, &c_error)
+
+    c_ctxt.wellFormed = 0
+    # The entity was looked up and does not need to be freed.
+    return NULL
+
+
+cdef void _initSaxDocument(void* ctxt) noexcept with gil:
+    xmlparser.xmlSAX2StartDocument(ctxt)
+    c_ctxt = <xmlparser.xmlParserCtxt*>ctxt
+    c_doc = c_ctxt.myDoc
+
+    # set up document dict
+    if c_doc and c_ctxt.dict and not c_doc.dict:
+        # I have no idea why libxml2 disables this - we need it
+        c_ctxt.dictNames = 1
+        c_doc.dict = c_ctxt.dict
+        xmlparser.xmlDictReference(c_ctxt.dict)
+
+    # set up XML ID hash table
+    if c_ctxt._private:
+        context = <_ParserContext>c_ctxt._private
+        if context._collect_ids:
+            # keep the global parser dict from filling up with XML IDs
+            if c_doc and not c_doc.ids:
+                # memory errors are not fatal here
+                c_dict = xmlparser.xmlDictCreate()
+                if c_dict:
+                    c_doc.ids = tree.xmlHashCreateDict(0, c_dict)
+                    xmlparser.xmlDictFree(c_dict)
+                else:
+                    c_doc.ids = tree.xmlHashCreate(0)
+        else:
+            c_ctxt.loadsubset |= xmlparser.XML_SKIP_IDS
+            if c_doc and c_doc.ids and not tree.xmlHashSize(c_doc.ids):
+                # already initialised but empty => clear
+                tree.xmlHashFree(c_doc.ids, NULL)
+                c_doc.ids = NULL
+
+
+############################################################
+## ET feed parser
+############################################################
+
+cdef class _FeedParser(_BaseParser):
+    cdef bint _feed_parser_running
+
+    @property
+    def feed_error_log(self):
+        """The error log of the last (or current) run of the feed parser.
+
+        Note that this is local to the feed parser and thus is
+        different from what the ``error_log`` property returns.
+        """
+        return self._getPushParserContext()._error_log.copy()
+
+    cpdef feed(self, data):
+        """feed(self, data)
+
+        Feeds data to the parser.  The argument should be an 8-bit string
+        buffer containing encoded data, although Unicode is supported as long
+        as both string types are not mixed.
+
+        This is the main entry point to the consumer interface of a
+        parser.  The parser will parse as much of the XML stream as it
+        can on each call.  To finish parsing or to reset the parser,
+        call the ``close()`` method.  Both methods may raise
+        ParseError if errors occur in the input data.  If an error is
+        raised, there is no longer a need to call ``close()``.
+
+        The feed parser interface is independent of the normal parser
+        usage.  You can use the same parser as a feed parser and in
+        the ``parse()`` function concurrently.
+        """
+        cdef _ParserContext context
+        cdef bytes bstring
+        cdef xmlparser.xmlParserCtxt* pctxt
+        cdef Py_ssize_t py_buffer_len, ustart
+        cdef const_char* char_data
+        cdef const_char* c_encoding
+        cdef int buffer_len
+        cdef int error
+        cdef bint recover = self._parse_options & xmlparser.XML_PARSE_RECOVER
+
+        if isinstance(data, bytes):
+            if self._default_encoding is None:
+                c_encoding = NULL
+            else:
+                c_encoding = self._default_encoding
+            char_data = _cstr(data)
+            py_buffer_len = python.PyBytes_GET_SIZE(data)
+            ustart = 0
+        elif isinstance(data, unicode):
+            c_encoding = b"UTF-8"
+            char_data = NULL
+            py_buffer_len = len(<unicode> data)
+            ustart = 0
+        else:
+            raise TypeError, "Parsing requires string data"
+
+        context = self._getPushParserContext()
+        pctxt = context._c_ctxt
+        error = 0
+        if not self._feed_parser_running:
+            context.prepare(set_document_loader=False)
+            self._feed_parser_running = 1
+            c_filename = (_cstr(self._filename)
+                          if self._filename is not None else NULL)
+
+            # We have to give *mlCtxtResetPush() enough input to figure
+            # out the character encoding (at least four bytes),
+            # however if we give it all we got, we'll have nothing for
+            # *mlParseChunk() and things go wrong.
+            buffer_len = 0
+            if char_data is not NULL:
+                buffer_len = 4 if py_buffer_len > 4 else <int>py_buffer_len
+            orig_loader = _register_document_loader()
+            if self._for_html:
+                error = _htmlCtxtResetPush(
+                    pctxt, char_data, buffer_len, c_filename, c_encoding,
+                    self._parse_options)
+            else:
+                xmlparser.xmlCtxtUseOptions(pctxt, self._parse_options)
+                error = xmlparser.xmlCtxtResetPush(
+                    pctxt, char_data, buffer_len, c_filename, c_encoding)
+            _reset_document_loader(orig_loader)
+            py_buffer_len -= buffer_len
+            char_data += buffer_len
+            if error:
+                raise MemoryError()
+            __GLOBAL_PARSER_CONTEXT.initParserDict(pctxt)
+
+        #print pctxt.charset, 'NONE' if c_encoding is NULL else c_encoding
+
+        fixup_error = 0
+        while py_buffer_len > 0 and (error == 0 or recover):
+            if char_data is NULL:
+                # Unicode parsing by converting chunks to UTF-8
+                buffer_len = 2**19  # len(bytes) <= 4 * (2**19) == 2 MiB
+                bstring = (<unicode> data)[ustart : ustart+buffer_len].encode('UTF-8')
+                ustart += buffer_len
+                py_buffer_len -= buffer_len  # may end up < 0
+                error, fixup_error = _parse_data_chunk(pctxt, <const char*> bstring, <int> len(bstring))
+            else:
+                # Direct byte string parsing.
+                buffer_len = <int>py_buffer_len if py_buffer_len <= limits.INT_MAX else limits.INT_MAX
+                error, fixup_error = _parse_data_chunk(pctxt, char_data, buffer_len)
+                py_buffer_len -= buffer_len
+                char_data += buffer_len
+
+            if fixup_error:
+                context.store_exception(MemoryError())
+
+            if context._has_raised():
+                # propagate Python exceptions immediately
+                recover = 0
+                error = 1
+                break
+
+            if error and not pctxt.replaceEntities and not pctxt.validate:
+                # in this mode, we ignore errors about undefined entities
+                for entry in context._error_log.filter_from_errors():
+                    if entry.type != ErrorTypes.WAR_UNDECLARED_ENTITY and \
+                           entry.type != ErrorTypes.ERR_UNDECLARED_ENTITY:
+                        break
+                else:
+                    error = 0
+
+        if not pctxt.wellFormed and xmlparser.xmlCtxtIsStopped(pctxt) and context._has_raised():
+            # propagate Python exceptions immediately
+            recover = 0
+            error = 1
+
+        if fixup_error or not recover and (error or not pctxt.wellFormed):
+            self._feed_parser_running = 0
+            try:
+                context._handleParseResult(self, pctxt.myDoc, None)
+            finally:
+                context.cleanup()
+
+    cpdef close(self):
+        """close(self)
+
+        Terminates feeding data to this parser.  This tells the parser to
+        process any remaining data in the feed buffer, and then returns the
+        root Element of the tree that was parsed.
+
+        This method must be called after passing the last chunk of data into
+        the ``feed()`` method.  It should only be called when using the feed
+        parser interface, all other usage is undefined.
+        """
+        if not self._feed_parser_running:
+            raise XMLSyntaxError("no element found",
+                                 xmlerror.XML_ERR_INTERNAL_ERROR, 0, 0,
+                                 self._filename)
+
+        context = self._getPushParserContext()
+        pctxt = context._c_ctxt
+
+        self._feed_parser_running = 0
+        if self._for_html:
+            htmlparser.htmlParseChunk(pctxt, NULL, 0, 1)
+        else:
+            xmlparser.xmlParseChunk(pctxt, NULL, 0, 1)
+
+        if (pctxt.recovery and not xmlparser.xmlCtxtIsStopped(pctxt) and
+                isinstance(context, _SaxParserContext)):
+            # apply any left-over 'end' events
+            (<_SaxParserContext>context).flushEvents()
+
+        try:
+            result = context._handleParseResult(self, pctxt.myDoc, None)
+        finally:
+            context.cleanup()
+
+        if isinstance(result, _Document):
+            return (<_Document>result).getroot()
+        else:
+            return result
+
+
+cdef (int, int) _parse_data_chunk(xmlparser.xmlParserCtxt* c_ctxt,
+                                  const char* char_data, int buffer_len):
+    fixup_error = 0
+    with nogil:
+        if c_ctxt.html:
+            c_node = c_ctxt.node  # last node where the parser stopped
+            orig_loader = _register_document_loader()
+            error = htmlparser.htmlParseChunk(c_ctxt, char_data, buffer_len, 0)
+            _reset_document_loader(orig_loader)
+            # and now for the fun part: move node names to the dict
+            if c_ctxt.myDoc:
+                fixup_error = _fixHtmlDictSubtreeNames(
+                    c_ctxt.dict, c_ctxt.myDoc, c_node)
+                if c_ctxt.myDoc.dict and c_ctxt.myDoc.dict is not c_ctxt.dict:
+                    xmlparser.xmlDictFree(c_ctxt.myDoc.dict)
+                    c_ctxt.myDoc.dict = c_ctxt.dict
+                    xmlparser.xmlDictReference(c_ctxt.dict)
+        else:
+            orig_loader = _register_document_loader()
+            error = xmlparser.xmlParseChunk(c_ctxt, char_data, buffer_len, 0)
+            _reset_document_loader(orig_loader)
+    return (error, fixup_error)
+
+
+cdef int _htmlCtxtResetPush(xmlparser.xmlParserCtxt* c_ctxt,
+                             const_char* c_data, int buffer_len,
+                             const_char* c_filename, const_char* c_encoding,
+                             int parse_options) except -1:
+    cdef xmlparser.xmlParserInput* c_input_stream
+    # libxml2 lacks an HTML push parser setup function
+    error = xmlparser.xmlCtxtResetPush(
+        c_ctxt, c_data, buffer_len, c_filename, c_encoding)
+    if error:
+        return error
+
+    # fix libxml2 setup for HTML
+    if tree.LIBXML_VERSION < 21400:
+        c_ctxt.progressive = 1  # TODO: remove
+    c_ctxt.html = 1
+    htmlparser.htmlCtxtUseOptions(c_ctxt, parse_options)
+
+    return 0
+
+
+############################################################
+## XML parser
+############################################################
+
+cdef int _XML_DEFAULT_PARSE_OPTIONS
+_XML_DEFAULT_PARSE_OPTIONS = (
+    xmlparser.XML_PARSE_NOENT   |
+    xmlparser.XML_PARSE_NOCDATA |
+    xmlparser.XML_PARSE_NONET   |
+    xmlparser.XML_PARSE_COMPACT |
+    xmlparser.XML_PARSE_BIG_LINES
+)
+
+cdef class XMLParser(_FeedParser):
+    """XMLParser(self, encoding=None, attribute_defaults=False, dtd_validation=False, \
+                 load_dtd=False, no_network=True, decompress=False, ns_clean=False, \
+                 recover=False, schema: XMLSchema =None, huge_tree=False, \
+                 remove_blank_text=False, resolve_entities='internal', \
+                 remove_comments=False, remove_pis=False, strip_cdata=True, \
+                 collect_ids=True, target=None, compact=True)
+
+    The XML parser.
+
+    Parsers can be supplied as additional argument to various parse
+    functions of the lxml API.  A default parser is always available
+    and can be replaced by a call to the global function
+    'set_default_parser'.  New parsers can be created at any time
+    without a major run-time overhead.
+
+    The keyword arguments in the constructor are mainly based on the
+    libxml2 parser configuration.  A DTD will also be loaded if DTD
+    validation or attribute default values are requested (unless you
+    additionally provide an XMLSchema from which the default
+    attributes can be read).
+
+    Available boolean keyword arguments:
+
+    - attribute_defaults - inject default attributes from DTD or XMLSchema
+    - dtd_validation     - validate against a DTD referenced by the document
+    - load_dtd           - use DTD for parsing
+    - no_network         - prevent network access for related files (default: True)
+    - decompress         - automatically decompress gzip input
+                           (default: False, changed in lxml 6.0, disabling only affects libxml2 2.15+)
+    - ns_clean           - clean up redundant namespace declarations
+    - recover            - try hard to parse through broken XML
+    - remove_blank_text  - discard blank text nodes that appear ignorable
+    - remove_comments    - discard comments
+    - remove_pis         - discard processing instructions
+    - strip_cdata        - replace CDATA sections by normal text content (default: True)
+    - compact            - save memory for short text content (default: True)
+    - collect_ids        - use a hash table of XML IDs for fast access
+                           (default: True, always True with DTD validation)
+    - huge_tree          - disable security restrictions and support very deep trees
+                           and very long text content
+
+    Other keyword arguments:
+
+    - resolve_entities - replace entities by their text value: False for keeping the
+          entity references, True for resolving them, and 'internal' for resolving
+          internal definitions only (no external file/URL access).
+          The default used to be True and was changed to 'internal' in lxml 5.0.
+    - encoding - override the document encoding (note: libiconv encoding name)
+    - target   - a parser target object that will receive the parse events
+    - schema   - an XMLSchema to validate against
+
+    Note that you should avoid sharing parsers between threads.  While this is
+    not harmful, it is more efficient to use separate parsers.  This does not
+    apply to the default parser.
+    """
+    def __init__(self, *, encoding=None, attribute_defaults=False,
+                 dtd_validation=False, load_dtd=False, no_network=True, decompress=False,
+                 ns_clean=False, recover=False, XMLSchema schema=None,
+                 huge_tree=False, remove_blank_text=False, resolve_entities='internal',
+                 remove_comments=False, remove_pis=False, strip_cdata=True,
+                 collect_ids=True, target=None, compact=True):
+        cdef int parse_options
+        cdef bint resolve_external = True
+        parse_options = _XML_DEFAULT_PARSE_OPTIONS
+        if load_dtd:
+            parse_options = parse_options | xmlparser.XML_PARSE_DTDLOAD
+        if dtd_validation:
+            parse_options = parse_options | xmlparser.XML_PARSE_DTDVALID | \
+                            xmlparser.XML_PARSE_DTDLOAD
+        if attribute_defaults:
+            parse_options = parse_options | xmlparser.XML_PARSE_DTDATTR
+            if schema is None:
+                parse_options = parse_options | xmlparser.XML_PARSE_DTDLOAD
+        if ns_clean:
+            parse_options = parse_options | xmlparser.XML_PARSE_NSCLEAN
+        if recover:
+            parse_options = parse_options | xmlparser.XML_PARSE_RECOVER
+        if remove_blank_text:
+            parse_options = parse_options | xmlparser.XML_PARSE_NOBLANKS
+        if huge_tree:
+            parse_options = parse_options | xmlparser.XML_PARSE_HUGE
+        if not no_network:
+            parse_options = parse_options ^ xmlparser.XML_PARSE_NONET
+        if not compact:
+            parse_options = parse_options ^ xmlparser.XML_PARSE_COMPACT
+        if not resolve_entities:
+            parse_options = parse_options ^ xmlparser.XML_PARSE_NOENT
+        elif resolve_entities == 'internal':
+            resolve_external = False
+        if not strip_cdata:
+            parse_options = parse_options ^ xmlparser.XML_PARSE_NOCDATA
+        if decompress:
+            parse_options |= xmlparser.XML_PARSE_UNZIP
+
+        _BaseParser.__init__(self, parse_options, False, schema,
+                             remove_comments, remove_pis, strip_cdata,
+                             collect_ids, target, encoding, resolve_external)
+
+    # Allow subscripting XMLParser in type annotations (PEP 560)
+    def __class_getitem__(cls, item):
+        return _GenericAlias(cls, item)
+
+
+cdef class XMLPullParser(XMLParser):
+    """XMLPullParser(self, events=None, *, tag=None, **kwargs)
+
+    XML parser that collects parse events in an iterator.
+
+    The collected events are the same as for iterparse(), but the
+    parser itself is non-blocking in the sense that it receives
+    data chunks incrementally through its .feed() method, instead
+    of reading them directly from a file(-like) object all by itself.
+
+    By default, it collects Element end events.  To change that,
+    pass any subset of the available events into the ``events``
+    argument: ``'start'``, ``'end'``, ``'start-ns'``,
+    ``'end-ns'``, ``'comment'``, ``'pi'``.
+
+    To support loading external dependencies relative to the input
+    source, you can pass the ``base_url``.
+    """
+    def __init__(self, events=None, *, tag=None, base_url=None, **kwargs):
+        XMLParser.__init__(self, **kwargs)
+        if events is None:
+            events = ('end',)
+        self._setBaseURL(base_url)
+        self._collectEvents(events, tag)
+
+    def read_events(self):
+        return (<_SaxParserContext?>self._getPushParserContext()).events_iterator
+
+
+cdef class ETCompatXMLParser(XMLParser):
+    """ETCompatXMLParser(self, encoding=None, attribute_defaults=False, \
+                 dtd_validation=False, load_dtd=False, no_network=True, decompress=False, \
+                 ns_clean=False, recover=False, schema=None, \
+                 huge_tree=False, remove_blank_text=False, resolve_entities='internal', \
+                 remove_comments=True, remove_pis=True, strip_cdata=True, \
+                 target=None, compact=True)
+
+    An XML parser with an ElementTree compatible default setup.
+
+    See the XMLParser class for details.
+
+    This parser has ``remove_comments`` and ``remove_pis`` enabled by default
+    and thus ignores comments and processing instructions.
+
+    The default value of ``resolve_entities`` used to be True and was changed to
+    'internal' in lxml 6.1.
+    """
+    def __init__(self, *, encoding=None, attribute_defaults=False,
+                 dtd_validation=False, load_dtd=False, no_network=True, decompress=False,
+                 ns_clean=False, recover=False, schema=None,
+                 huge_tree=False, remove_blank_text=False, resolve_entities='internal',
+                 remove_comments=True, remove_pis=True, strip_cdata=True,
+                 target=None, compact=True):
+        XMLParser.__init__(self,
+                           attribute_defaults=attribute_defaults,
+                           dtd_validation=dtd_validation,
+                           load_dtd=load_dtd,
+                           no_network=no_network,
+                           decompress=decompress,
+                           ns_clean=ns_clean,
+                           recover=recover,
+                           remove_blank_text=remove_blank_text,
+                           huge_tree=huge_tree,
+                           compact=compact,
+                           resolve_entities=resolve_entities,
+                           remove_comments=remove_comments,
+                           remove_pis=remove_pis,
+                           strip_cdata=strip_cdata,
+                           target=target,
+                           encoding=encoding,
+                           schema=schema,
+                           )
+
+# ET 1.2 compatible name
+XMLTreeBuilder = ETCompatXMLParser
+
+
+cdef XMLParser __DEFAULT_XML_PARSER
+__DEFAULT_XML_PARSER = XMLParser()
+
+__GLOBAL_PARSER_CONTEXT.setDefaultParser(__DEFAULT_XML_PARSER)
+
+def set_default_parser(_BaseParser parser=None):
+    """set_default_parser(parser=None)
+
+    Set a default parser for the current thread.  This parser is used
+    globally whenever no parser is supplied to the various parse functions of
+    the lxml API.  If this function is called without a parser (or if it is
+    None), the default parser is reset to the original configuration.
+
+    Note that the pre-installed default parser is not thread-safe.  Avoid the
+    default parser in multi-threaded environments.  You can create a separate
+    parser for each thread explicitly or use a parser pool.
+    """
+    if parser is None:
+        parser = __DEFAULT_XML_PARSER
+    __GLOBAL_PARSER_CONTEXT.setDefaultParser(parser)
+
+def get_default_parser():
+    "get_default_parser()"
+    return __GLOBAL_PARSER_CONTEXT.getDefaultParser()
+
+############################################################
+## HTML parser
+############################################################
+
+cdef int _HTML_DEFAULT_PARSE_OPTIONS
+_HTML_DEFAULT_PARSE_OPTIONS = (
+    htmlparser.HTML_PARSE_RECOVER |
+    htmlparser.HTML_PARSE_NONET   |
+    htmlparser.HTML_PARSE_COMPACT
+    )
+
+cdef object _UNUSED = object()
+
+cdef class HTMLParser(_FeedParser):
+    """HTMLParser(self, encoding=None, remove_blank_text=False, \
+                   remove_comments=False, remove_pis=False, \
+                   no_network=True, decompress=False, target=None, schema: XMLSchema =None, \
+                   recover=True, compact=True, collect_ids=True, huge_tree=False)
+
+    The HTML parser.
+
+    This parser allows reading HTML into a normal XML tree.  By
+    default, it can read broken (non well-formed) HTML, depending on
+    the capabilities of libxml2.  Use the 'recover' option to switch
+    this off.
+
+    Available boolean keyword arguments:
+
+    - recover            - try hard to parse through broken HTML (default: True)
+    - no_network         - prevent network access for related files (default: True)
+    - decompress         - automatically decompress gzip input
+                           (default: False, changed in lxml 6.0, disabling only affects libxml2 2.15+)
+    - remove_blank_text  - discard empty text nodes that are ignorable (i.e. not actual text content)
+    - remove_comments    - discard comments
+    - remove_pis         - discard processing instructions
+    - compact            - save memory for short text content (default: True)
+    - default_doctype    - add a default doctype even if it is not found in the HTML (default: True)
+    - collect_ids        - use a hash table of XML IDs for fast access (default: True)
+    - huge_tree          - disable security restrictions and support very deep trees
+                           and very long text content
+
+    Other keyword arguments:
+
+    - encoding - override the document encoding (note: libiconv encoding name)
+    - target   - a parser target object that will receive the parse events
+    - schema   - an XMLSchema to validate against
+
+    Note that you should avoid sharing parsers between threads for performance
+    reasons.
+    """
+    def __init__(self, *, encoding=None, remove_blank_text=False,
+                 remove_comments=False, remove_pis=False, strip_cdata=_UNUSED,
+                 no_network=True, decompress=False, target=None, XMLSchema schema=None,
+                 recover=True, compact=True, default_doctype=True,
+                 collect_ids=True, huge_tree=False):
+        cdef int parse_options
+        parse_options = _HTML_DEFAULT_PARSE_OPTIONS
+        if remove_blank_text:
+            parse_options = parse_options | htmlparser.HTML_PARSE_NOBLANKS
+        if not recover:
+            parse_options = parse_options ^ htmlparser.HTML_PARSE_RECOVER
+        if not no_network:
+            parse_options = parse_options ^ htmlparser.HTML_PARSE_NONET
+        if not compact:
+            parse_options = parse_options ^ htmlparser.HTML_PARSE_COMPACT
+        if not default_doctype:
+            parse_options = parse_options ^ htmlparser.HTML_PARSE_NODEFDTD
+        if huge_tree:
+            parse_options = parse_options | xmlparser.XML_PARSE_HUGE
+        if decompress:
+            parse_options |= xmlparser.XML_PARSE_UNZIP
+
+        if strip_cdata is not _UNUSED:
+            import warnings
+            warnings.warn(
+                "The 'strip_cdata' option of HTMLParser() has never done anything and will eventually be removed.",
+                DeprecationWarning)
+        _BaseParser.__init__(self, parse_options, True, schema,
+                             remove_comments, remove_pis, strip_cdata,
+                             collect_ids, target, encoding)
+
+    # Allow subscripting HTMLParser in type annotations (PEP 560)
+    def __class_getitem__(cls, item):
+        return _GenericAlias(cls, item)
+
+
+cdef HTMLParser __DEFAULT_HTML_PARSER
+__DEFAULT_HTML_PARSER = HTMLParser()
+
+
+cdef class HTMLPullParser(HTMLParser):
+    """HTMLPullParser(self, events=None, *, tag=None, base_url=None, **kwargs)
+
+    HTML parser that collects parse events in an iterator.
+
+    The collected events are the same as for iterparse(), but the
+    parser itself is non-blocking in the sense that it receives
+    data chunks incrementally through its .feed() method, instead
+    of reading them directly from a file(-like) object all by itself.
+
+    By default, it collects Element end events.  To change that,
+    pass any subset of the available events into the ``events``
+    argument: ``'start'``, ``'end'``, ``'start-ns'``,
+    ``'end-ns'``, ``'comment'``, ``'pi'``.
+
+    To support loading external dependencies relative to the input
+    source, you can pass the ``base_url``.
+    """
+    def __init__(self, events=None, *, tag=None, base_url=None, **kwargs):
+        HTMLParser.__init__(self, **kwargs)
+        if events is None:
+            events = ('end',)
+        self._setBaseURL(base_url)
+        self._collectEvents(events, tag)
+
+    def read_events(self):
+        return (<_SaxParserContext?>self._getPushParserContext()).events_iterator
+
+
+############################################################
+## helper functions for document creation
+############################################################
+
+cdef xmlDoc* _parseDoc(text, filename, _BaseParser parser) except NULL:
+    cdef char* c_filename
+    if parser is None:
+        parser = __GLOBAL_PARSER_CONTEXT.getDefaultParser()
+    if not filename:
+        c_filename = NULL
+    else:
+        filename_utf = _encodeFilenameUTF8(filename)
+        c_filename = _cstr(filename_utf)
+    if isinstance(text, bytes):
+        return _parseDoc_bytes(<bytes> text, filename, c_filename, parser)
+    elif isinstance(text, unicode):
+        return _parseDoc_unicode(<unicode> text, filename, c_filename, parser)
+    else:
+        return _parseDoc_charbuffer(text, filename, c_filename, parser)
+
+
+cdef xmlDoc* _parseDoc_unicode(unicode text, filename, char* c_filename, _BaseParser parser) except NULL:
+    cdef Py_ssize_t c_len
+    if python.PyUnicode_IS_READY(text):
+        # PEP-393 Unicode string
+        c_len = python.PyUnicode_GET_LENGTH(text) * python.PyUnicode_KIND(text)
+    else:
+        # old Py_UNICODE string
+        c_len = python.PyUnicode_GET_DATA_SIZE(text)
+    if c_len > limits.INT_MAX:
+        return parser._parseDocFromFilelike(
+            StringIO(text), filename, None)
+    return parser._parseUnicodeDoc(text, c_filename)
+
+
+cdef xmlDoc* _parseDoc_bytes(bytes text, filename, char* c_filename, _BaseParser parser) except NULL:
+    cdef Py_ssize_t c_len = len(text)
+    if c_len > limits.INT_MAX:
+        return parser._parseDocFromFilelike(BytesIO(text), filename, None)
+    return parser._parseDoc(text, c_len, c_filename)
+
+
+cdef xmlDoc* _parseDoc_charbuffer(text, filename, char* c_filename, _BaseParser parser) except NULL:
+    cdef const unsigned char[::1] data = memoryview(text).cast('B')  # cast to 'unsigned char' buffer
+    cdef Py_ssize_t c_len = len(data)
+    if c_len > limits.INT_MAX:
+        return parser._parseDocFromFilelike(BytesIO(text), filename, None)
+    return parser._parseDoc(<const char*>&data[0], c_len, c_filename)
+
+
+cdef xmlDoc* _parseDocFromFile(filename8, _BaseParser parser) except NULL:
+    if parser is None:
+        parser = __GLOBAL_PARSER_CONTEXT.getDefaultParser()
+    return (<_BaseParser>parser)._parseDocFromFile(_cstr(filename8))
+
+
+cdef xmlDoc* _parseDocFromFilelike(source, filename,
+                                   _BaseParser parser) except NULL:
+    if parser is None:
+        parser = __GLOBAL_PARSER_CONTEXT.getDefaultParser()
+    return (<_BaseParser>parser)._parseDocFromFilelike(source, filename, None)
+
+
+cdef xmlDoc* _newXMLDoc() except NULL:
+    cdef xmlDoc* result
+    result = tree.xmlNewDoc(NULL)
+    if result is NULL:
+        raise MemoryError()
+    if result.encoding is NULL:
+        result.encoding = tree.xmlStrdup(<unsigned char*>"UTF-8")
+    __GLOBAL_PARSER_CONTEXT.initDocDict(result)
+    return result
+
+cdef xmlDoc* _newHTMLDoc() except NULL:
+    cdef xmlDoc* result
+    result = tree.htmlNewDoc(NULL, NULL)
+    if result is NULL:
+        raise MemoryError()
+    __GLOBAL_PARSER_CONTEXT.initDocDict(result)
+    return result
+
+
+cdef xmlDoc* _copyDoc(xmlDoc* c_doc, int recursive) except NULL:
+    """Return a copy of c_doc, without moving the names into the dict."""
+    cdef xmlDoc* result
+    if recursive:
+        with nogil:
+            result = tree.xmlCopyDoc(c_doc, recursive)
+    else:
+        result = tree.xmlCopyDoc(c_doc, 0)
+    if result is NULL:
+        raise MemoryError()
+    __GLOBAL_PARSER_CONTEXT.initDocDict(result)
+    return result
+
+
+cdef xmlDoc* _copyDocRoot(xmlDoc* c_doc, xmlNode* c_new_root) except NULL:
+    """Recursively copy the document and make c_new_root the new root node."""
+    cdef xmlDoc* result
+    cdef xmlNode* c_node
+    result = tree.xmlCopyDoc(c_doc, 0) # non recursive
+    if result is NULL:
+        raise MemoryError()
+    __GLOBAL_PARSER_CONTEXT.initDocDict(result)
+
+    with nogil:
+        c_node = tree.xmlDocCopyNode(c_new_root, result, 1) # recursive
+    if c_node is NULL:
+        tree.xmlFreeDoc(result)
+        raise MemoryError()
+
+    tree.xmlDocSetRootElement(result, c_node)
+    # Copy the tail text after setting the root element since libxml2 otherwise unlinks the tail.
+    _copyTail(c_new_root.next, c_node)
+    return result
+
+
+cdef xmlNode* _copyNodeToDoc(xmlNode* c_node, xmlDoc* c_doc) except NULL:
+    """Recursively copy the element into the document. c_doc is not modified."""
+    cdef xmlNode* c_root
+    c_root = tree.xmlDocCopyNode(c_node, c_doc, 1) # recursive
+    if c_root is NULL:
+        raise MemoryError()
+    _copyTail(c_node.next, c_root)
+    return c_root
+
+
+############################################################
+## API level helper functions for _Document creation
+############################################################
+
+cdef _Document _parseDocument(source, _BaseParser parser, base_url):
+    cdef _Document doc
+    source = _getFSPathOrObject(source)
+    if _isString(source):
+        # parse the file directly from the filesystem
+        doc = _parseDocumentFromURL(_encodeFilename(source), parser)
+        # fix base URL if requested
+        if base_url is not None:
+            base_url = _encodeFilenameUTF8(base_url)
+            if doc._c_doc.URL is not NULL:
+                tree.xmlFree(<char*>doc._c_doc.URL)
+            doc._c_doc.URL = tree.xmlStrdup(_xcstr(base_url))
+        return doc
+
+    if base_url is not None:
+        url = base_url
+    else:
+        url = _getFilenameForFile(source)
+
+    if hasattr(source, 'getvalue') and hasattr(source, 'tell'):
+        # StringIO - reading from start?
+        if source.tell() == 0:
+            return _parseMemoryDocument(source.getvalue(), url, parser)
+
+    # Support for file-like objects (urlgrabber.urlopen, ...)
+    if hasattr(source, 'read'):
+        return _parseFilelikeDocument(source, url, parser)
+
+    raise TypeError, f"cannot parse from '{python._fqtypename(source).decode('UTF-8')}'"
+
+cdef _Document _parseDocumentFromURL(url, _BaseParser parser):
+    c_doc = _parseDocFromFile(url, parser)
+    return _documentFactory(c_doc, parser)
+
+cdef _Document _parseMemoryDocument(text, url, _BaseParser parser):
+    if isinstance(text, unicode):
+        if _hasEncodingDeclaration(text):
+            raise ValueError(
+                "Unicode strings with encoding declaration are not supported. "
+                "Please use bytes input or XML fragments without declaration.")
+    c_doc = _parseDoc(text, url, parser)
+    return _documentFactory(c_doc, parser)
+
+cdef _Document _parseFilelikeDocument(source, url, _BaseParser parser):
+    c_doc = _parseDocFromFilelike(source, url, parser)
+    return _documentFactory(c_doc, parser)

.venv/lib/python3.12/site-packages/lxml/parsertarget.pxi

@@ -0,0 +1,180 @@
+# Parser target context (ET target interface)
+
+cdef object inspect_getargspec
+try:
+    from inspect import getfullargspec as inspect_getargspec
+except ImportError:
+    from inspect import getargspec as inspect_getargspec
+
+
+class _TargetParserResult(Exception):
+    # Admittedly, this is somewhat ugly, but it's the easiest way
+    # to push the Python level parser result through the parser
+    # machinery towards the API level functions
+    def __init__(self, result):
+        self.result = result
+
+
+@cython.final
+@cython.internal
+cdef class _PythonSaxParserTarget(_SaxParserTarget):
+    cdef object _target_start
+    cdef object _target_end
+    cdef object _target_data
+    cdef object _target_start_ns
+    cdef object _target_end_ns
+    cdef object _target_doctype
+    cdef object _target_pi
+    cdef object _target_comment
+    cdef bint _start_takes_nsmap
+
+    def __cinit__(self, target):
+        cdef int event_filter
+        event_filter = 0
+        self._start_takes_nsmap = 0
+        try:
+            self._target_start = target.start
+            if self._target_start is not None:
+                event_filter |= SAX_EVENT_START
+        except AttributeError:
+            pass
+        else:
+            try:
+                arguments = inspect_getargspec(self._target_start)
+                if len(arguments[0]) > 3 or arguments[1] is not None:
+                    self._start_takes_nsmap = 1
+            except TypeError:
+                pass
+        try:
+            self._target_end = target.end
+            if self._target_end is not None:
+                event_filter |= SAX_EVENT_END
+        except AttributeError:
+            pass
+        try:
+            self._target_start_ns = target.start_ns
+            if self._target_start_ns is not None:
+                event_filter |= SAX_EVENT_START_NS
+        except AttributeError:
+            pass
+        try:
+            self._target_end_ns = target.end_ns
+            if self._target_end_ns is not None:
+                event_filter |= SAX_EVENT_END_NS
+        except AttributeError:
+            pass
+        try:
+            self._target_data = target.data
+            if self._target_data is not None:
+                event_filter |= SAX_EVENT_DATA
+        except AttributeError:
+            pass
+        try:
+            self._target_doctype = target.doctype
+            if self._target_doctype is not None:
+                event_filter |= SAX_EVENT_DOCTYPE
+        except AttributeError:
+            pass
+        try:
+            self._target_pi = target.pi
+            if self._target_pi is not None:
+                event_filter |= SAX_EVENT_PI
+        except AttributeError:
+            pass
+        try:
+            self._target_comment = target.comment
+            if self._target_comment is not None:
+                event_filter |= SAX_EVENT_COMMENT
+        except AttributeError:
+            pass
+        self._sax_event_filter = event_filter
+
+    cdef _handleSaxStart(self, tag, attrib, nsmap):
+        if self._start_takes_nsmap:
+            return self._target_start(tag, attrib, nsmap)
+        else:
+            return self._target_start(tag, attrib)
+
+    cdef _handleSaxEnd(self, tag):
+        return self._target_end(tag)
+
+    cdef _handleSaxStartNs(self, prefix, uri):
+        return self._target_start_ns(prefix, uri)
+
+    cdef _handleSaxEndNs(self, prefix):
+        return self._target_end_ns(prefix)
+
+    cdef int _handleSaxData(self, data) except -1:
+        self._target_data(data)
+
+    cdef int _handleSaxDoctype(self, root_tag, public_id, system_id) except -1:
+        self._target_doctype(root_tag, public_id, system_id)
+
+    cdef _handleSaxPi(self, target, data):
+        return self._target_pi(target, data)
+
+    cdef _handleSaxComment(self, comment):
+        return self._target_comment(comment)
+
+
+@cython.final
+@cython.internal
+@cython.no_gc_clear  # Required because parent class uses it - Cython bug.
+cdef class _TargetParserContext(_SaxParserContext):
+    """This class maps SAX2 events to the ET parser target interface.
+    """
+    cdef object _python_target
+    cdef int _setTarget(self, target) except -1:
+        self._python_target = target
+        if not isinstance(target, _SaxParserTarget) or \
+                hasattr(target, '__dict__'):
+            target = _PythonSaxParserTarget(target)
+        self._setSaxParserTarget(target)
+        return 0
+
+    cdef _ParserContext _copy(self):
+        cdef _TargetParserContext context
+        context = _ParserContext._copy(self)
+        context._setTarget(self._python_target)
+        return context
+
+    cdef void _cleanupTargetParserContext(self, xmlDoc* result) noexcept:
+        if self._c_ctxt.myDoc is not NULL:
+            if self._c_ctxt.myDoc is not result and \
+                    self._c_ctxt.myDoc._private is NULL:
+                # no _Document proxy => orphen
+                tree.xmlFreeDoc(self._c_ctxt.myDoc)
+            self._c_ctxt.myDoc = NULL
+
+    cdef object _handleParseResult(self, _BaseParser parser, xmlDoc* result,
+                                   filename):
+        cdef bint recover
+        recover = parser._parse_options & xmlparser.XML_PARSE_RECOVER
+        try:
+            if self._has_raised():
+                self._cleanupTargetParserContext(result)
+                self._raise_if_stored()
+            if not self._c_ctxt.wellFormed and not recover:
+                _raiseParseError(self._c_ctxt, filename, self._error_log)
+        except:
+            self._python_target.close()
+            raise
+        return self._python_target.close()
+
+    cdef xmlDoc* _handleParseResultDoc(self, _BaseParser parser,
+                                       xmlDoc* result, filename) except NULL:
+        cdef bint recover
+        recover = parser._parse_options & xmlparser.XML_PARSE_RECOVER
+        if result is not NULL and result._private is NULL:
+            # no _Document proxy => orphen
+            tree.xmlFreeDoc(result)
+        try:
+            self._cleanupTargetParserContext(result)
+            self._raise_if_stored()
+            if not self._c_ctxt.wellFormed and not recover:
+                _raiseParseError(self._c_ctxt, filename, self._error_log)
+        except:
+            self._python_target.close()
+            raise
+        parse_result = self._python_target.close()
+        raise _TargetParserResult(parse_result)

.venv/lib/python3.12/site-packages/lxml/proxy.pxi

@@ -0,0 +1,624 @@
+# Proxy functions and low level node allocation stuff
+
+# Proxies represent elements, their reference is stored in the C
+# structure of the respective node to avoid multiple instantiation of
+# the Python class.
+
+@cython.linetrace(False)
+@cython.profile(False)
+cdef inline _Element getProxy(xmlNode* c_node):
+    """Get a proxy for a given node.
+    """
+    #print "getProxy for:", <int>c_node
+    if c_node is not NULL and c_node._private is not NULL:
+        return <_Element>c_node._private
+    else:
+        return None
+
+
+@cython.linetrace(False)
+@cython.profile(False)
+cdef inline bint hasProxy(xmlNode* c_node):
+    if c_node._private is NULL:
+        return False
+    return True
+
+
+@cython.linetrace(False)
+@cython.profile(False)
+cdef inline int _registerProxy(_Element proxy, _Document doc,
+                               xmlNode* c_node) except -1:
+    """Register a proxy and type for the node it's proxying for.
+    """
+    #print "registering for:", <int>proxy._c_node
+    assert not hasProxy(c_node), "double registering proxy!"
+    proxy._doc = doc
+    proxy._c_node = c_node
+    c_node._private = <void*>proxy
+    return 0
+
+
+@cython.linetrace(False)
+@cython.profile(False)
+cdef inline int _unregisterProxy(_Element proxy) except -1:
+    """Unregister a proxy for the node it's proxying for.
+    """
+    cdef xmlNode* c_node = proxy._c_node
+    assert c_node._private is <void*>proxy, "Tried to unregister unknown proxy"
+    c_node._private = NULL
+    return 0
+
+
+################################################################################
+# temporarily make a node the root node of its document
+
+cdef xmlDoc* _fakeRootDoc(xmlDoc* c_base_doc, xmlNode* c_node) except NULL:
+    return _plainFakeRootDoc(c_base_doc, c_node, 1)
+
+cdef xmlDoc* _plainFakeRootDoc(xmlDoc* c_base_doc, xmlNode* c_node,
+                               bint with_siblings) except NULL:
+    # build a temporary document that has the given node as root node
+    # note that copy and original must not be modified during its lifetime!!
+    # always call _destroyFakeDoc() after use!
+    cdef xmlNode* c_child
+    cdef xmlNode* c_root
+    cdef xmlNode* c_new_root
+    cdef xmlDoc*  c_doc
+    if with_siblings or (c_node.prev is NULL and c_node.next is NULL):
+        c_root = tree.xmlDocGetRootElement(c_base_doc)
+        if c_root is c_node:
+            # already the root node, no siblings
+            return c_base_doc
+
+    c_doc  = _copyDoc(c_base_doc, 0)                   # non recursive!
+    c_new_root = tree.xmlDocCopyNode(c_node, c_doc, 2) if c_doc is not NULL else NULL # non recursive!
+    if c_new_root is NULL:
+        raise MemoryError()
+    tree.xmlDocSetRootElement(c_doc, c_new_root)
+    _copyParentNamespaces(c_node, c_new_root)
+
+    c_new_root.children = c_node.children
+    c_new_root.last = c_node.last
+    c_new_root.next = c_new_root.prev = NULL
+
+    # store original node
+    c_doc._private = c_node
+
+    # divert parent pointers of children
+    c_child = c_new_root.children
+    while c_child is not NULL:
+        c_child.parent = c_new_root
+        c_child = c_child.next
+
+    c_doc.children = c_new_root
+    return c_doc
+
+cdef void _destroyFakeDoc(xmlDoc* c_base_doc, xmlDoc* c_doc) noexcept:
+    # delete a temporary document
+    cdef xmlNode* c_child
+    cdef xmlNode* c_parent
+    cdef xmlNode* c_root
+    if c_doc is c_base_doc:
+        return
+    c_root = tree.xmlDocGetRootElement(c_doc)
+
+    # restore parent pointers of children
+    c_parent = <xmlNode*>c_doc._private
+    c_child = c_root.children
+    while c_child is not NULL:
+        c_child.parent = c_parent
+        c_child = c_child.next
+
+    # prevent recursive removal of children
+    c_root.children = c_root.last = NULL
+    tree.xmlFreeDoc(c_doc)
+
+cdef _Element _fakeDocElementFactory(_Document doc, xmlNode* c_element):
+    """Special element factory for cases where we need to create a fake
+    root document, but still need to instantiate arbitrary nodes from
+    it.  If we instantiate the fake root node, things will turn bad
+    when it's destroyed.
+
+    Instead, if we are asked to instantiate the fake root node, we
+    instantiate the original node instead.
+    """
+    if c_element.doc is not doc._c_doc:
+        if c_element.doc._private is not NULL:
+            if c_element is c_element.doc.children:
+                c_element = <xmlNode*>c_element.doc._private
+                #assert c_element.type == tree.XML_ELEMENT_NODE
+    return _elementFactory(doc, c_element)
+
+################################################################################
+# support for freeing tree elements when proxy objects are destroyed
+
+cdef int attemptDeallocation(xmlNode* c_node) noexcept:
+    """Attempt deallocation of c_node (or higher up in tree).
+    """
+    cdef xmlNode* c_top
+    # could be we actually aren't referring to the tree at all
+    if c_node is NULL:
+        #print "not freeing, node is NULL"
+        return 0
+    c_top = getDeallocationTop(c_node)
+    if c_top is not NULL:
+        #print "freeing:", c_top.name
+        _removeText(c_top.next) # tail
+        tree.xmlFreeNode(c_top)
+        return 1
+    return 0
+
+cdef xmlNode* getDeallocationTop(xmlNode* c_node) noexcept:
+    """Return the top of the tree that can be deallocated, or NULL.
+    """
+    cdef xmlNode* c_next
+    #print "trying to do deallocating:", c_node.type
+    if hasProxy(c_node):
+        #print "Not freeing: proxies still exist"
+        return NULL
+    while c_node.parent is not NULL:
+        c_node = c_node.parent
+        #print "checking:", c_current.type
+        if c_node.type == tree.XML_DOCUMENT_NODE or \
+               c_node.type == tree.XML_HTML_DOCUMENT_NODE:
+            #print "not freeing: still in doc"
+            return NULL
+        # if we're still attached to the document, don't deallocate
+        if hasProxy(c_node):
+            #print "Not freeing: proxies still exist"
+            return NULL
+    # see whether we have children to deallocate
+    if not canDeallocateChildNodes(c_node):
+        return NULL
+    # see whether we have siblings to deallocate
+    c_next = c_node.prev
+    while c_next:
+        if _isElement(c_next):
+            if hasProxy(c_next) or not canDeallocateChildNodes(c_next):
+                return NULL
+        c_next = c_next.prev
+    c_next = c_node.next
+    while c_next:
+        if _isElement(c_next):
+            if hasProxy(c_next) or not canDeallocateChildNodes(c_next):
+                return NULL
+        c_next = c_next.next
+    return c_node
+
+cdef int canDeallocateChildNodes(xmlNode* c_parent) noexcept:
+    cdef xmlNode* c_node
+    c_node = c_parent.children
+    tree.BEGIN_FOR_EACH_ELEMENT_FROM(c_parent, c_node, 1)
+    if hasProxy(c_node):
+        return 0
+    tree.END_FOR_EACH_ELEMENT_FROM(c_node)
+    return 1
+
+################################################################################
+# fix _Document references and namespaces when a node changes documents
+
+cdef void _copyParentNamespaces(xmlNode* c_from_node, xmlNode* c_to_node) noexcept nogil:
+    """Copy the namespaces of all ancestors of c_from_node to c_to_node.
+    """
+    cdef xmlNode* c_parent
+    cdef xmlNs* c_ns
+    cdef xmlNs* c_new_ns
+    cdef int prefix_known
+    c_parent = c_from_node.parent
+    while c_parent and (tree._isElementOrXInclude(c_parent) or
+                        c_parent.type == tree.XML_DOCUMENT_NODE):
+        c_new_ns = c_parent.nsDef
+        while c_new_ns:
+            # libxml2 will check if the prefix is already defined
+            tree.xmlNewNs(c_to_node, c_new_ns.href, c_new_ns.prefix)
+            c_new_ns = c_new_ns.next
+        c_parent = c_parent.parent
+
+
+ctypedef struct _ns_update_map:
+    xmlNs* old
+    xmlNs* new
+
+
+ctypedef struct _nscache:
+    _ns_update_map* ns_map
+    size_t size
+    size_t last
+
+
+cdef int _growNsCache(_nscache* c_ns_cache) except -1:
+    cdef _ns_update_map* ns_map_ptr
+    if c_ns_cache.size == 0:
+        c_ns_cache.size = 20
+    else:
+        c_ns_cache.size *= 2
+    ns_map_ptr = <_ns_update_map*> python.lxml_realloc(
+        c_ns_cache.ns_map, c_ns_cache.size, sizeof(_ns_update_map))
+    if not ns_map_ptr:
+        python.lxml_free(c_ns_cache.ns_map)
+        c_ns_cache.ns_map = NULL
+        raise MemoryError()
+    c_ns_cache.ns_map = ns_map_ptr
+    return 0
+
+
+cdef inline int _appendToNsCache(_nscache* c_ns_cache,
+                                 xmlNs* c_old_ns, xmlNs* c_new_ns) except -1:
+    if c_ns_cache.last >= c_ns_cache.size:
+        _growNsCache(c_ns_cache)
+    c_ns_cache.ns_map[c_ns_cache.last] = _ns_update_map(old=c_old_ns, new=c_new_ns)
+    c_ns_cache.last += 1
+
+
+cdef int _stripRedundantNamespaceDeclarations(xmlNode* c_element, _nscache* c_ns_cache,
+                                              xmlNs** c_del_ns_list) except -1:
+    """Removes namespace declarations from an element that are already
+    defined in its parents.  Does not free the xmlNs's, just prepends
+    them to the c_del_ns_list.
+    """
+    cdef xmlNs* c_ns
+    cdef xmlNs* c_ns_next
+    cdef xmlNs** c_nsdef
+    # use a xmlNs** to handle assignments to "c_element.nsDef" correctly
+    c_nsdef = &c_element.nsDef
+    while c_nsdef[0] is not NULL:
+        c_ns = tree.xmlSearchNsByHref(
+            c_element.doc, c_element.parent, c_nsdef[0].href)
+        if c_ns is NULL:
+            # new namespace href => keep and cache the ns declaration
+            _appendToNsCache(c_ns_cache, c_nsdef[0], c_nsdef[0])
+            c_nsdef = &c_nsdef[0].next
+        else:
+            # known namespace href => cache mapping and strip old ns
+            _appendToNsCache(c_ns_cache, c_nsdef[0], c_ns)
+            # cut out c_nsdef.next and prepend it to garbage chain
+            c_ns_next = c_nsdef[0].next
+            c_nsdef[0].next = c_del_ns_list[0]
+            c_del_ns_list[0] = c_nsdef[0]
+            c_nsdef[0] = c_ns_next
+    return 0
+
+
+cdef void _cleanUpFromNamespaceAdaptation(xmlNode* c_start_node,
+                                          _nscache* c_ns_cache, xmlNs* c_del_ns_list) noexcept:
+    # Try to recover from exceptions with really bad timing.  We were in the middle
+    # of ripping out xmlNS-es and likely ran out of memory.  Try to fix up the tree
+    # by re-adding the original xmlNs declarations (which might still be used in some
+    # places).
+    if c_ns_cache.ns_map:
+        python.lxml_free(c_ns_cache.ns_map)
+    if c_del_ns_list:
+        if not c_start_node.nsDef:
+            c_start_node.nsDef = c_del_ns_list
+        else:
+            c_ns = c_start_node.nsDef
+            while c_ns.next:
+                c_ns = c_ns.next
+            c_ns.next = c_del_ns_list
+
+
+cdef int moveNodeToDocument(_Document doc, xmlDoc* c_source_doc,
+                            xmlNode* c_element) except -1:
+    """Fix the xmlNs pointers of a node and its subtree that were moved.
+
+    Originally copied from libxml2's xmlReconciliateNs().  Expects
+    libxml2 doc pointers of node to be correct already, but fixes
+    _Document references.
+
+    For each node in the subtree, we do this:
+
+    1) Remove redundant declarations of namespace that are already
+       defined in its parents.
+
+    2) Replace namespaces that are *not* defined on the node or its
+       parents by the equivalent namespace declarations that *are*
+       defined on the node or its parents (possibly using a different
+       prefix).  If a namespace is unknown, declare a new one on the
+       node.
+
+    3) Reassign the names of tags and attribute from the dict of the
+       target document *iff* it is different from the dict used in the
+       source subtree.
+
+    4) Set the Document reference to the new Document (if different).
+       This is done on backtracking to keep the original Document
+       alive as long as possible, until all its elements are updated.
+
+    Note that the namespace declarations are removed from the tree in
+    step 1), but freed only after the complete subtree was traversed
+    and all occurrences were replaced by tree-internal pointers.
+    """
+    cdef xmlNode* c_start_node
+    cdef xmlNode* c_node
+    cdef xmlDoc* c_doc = doc._c_doc
+    cdef tree.xmlAttr* c_attr
+    cdef char* c_name
+    cdef _nscache c_ns_cache = [NULL, 0, 0]
+    cdef xmlNs* c_del_ns_list = NULL
+    cdef proxy_count = 0
+
+    if not tree._isElementOrXInclude(c_element):
+        return 0
+
+    c_start_node = c_element
+
+    tree.BEGIN_FOR_EACH_FROM(c_element, c_element, 1)
+    if tree._isElementOrXInclude(c_element):
+        if hasProxy(c_element):
+            proxy_count += 1
+
+        # 1) cut out namespaces defined here that are already known by
+        #    the ancestors
+        if c_element.nsDef is not NULL:
+            try:
+                _stripRedundantNamespaceDeclarations(c_element, &c_ns_cache, &c_del_ns_list)
+            except:
+                _cleanUpFromNamespaceAdaptation(c_start_node, &c_ns_cache, c_del_ns_list)
+                raise
+
+        # 2) make sure the namespaces of an element and its attributes
+        #    are declared in this document (i.e. on the node or its parents)
+        if c_element.ns is not NULL:
+            _fixCNs(doc, c_start_node, c_element, &c_ns_cache, c_del_ns_list)
+
+        c_node = <xmlNode*>c_element.properties
+        while c_node is not NULL:
+            if c_node.ns is not NULL:
+                _fixCNs(doc, c_start_node, c_node, &c_ns_cache, c_del_ns_list)
+            c_node = c_node.next
+
+    tree.END_FOR_EACH_FROM(c_element)
+
+    # free now unused namespace declarations
+    if c_del_ns_list is not NULL:
+        tree.xmlFreeNsList(c_del_ns_list)
+
+    # cleanup
+    if c_ns_cache.ns_map is not NULL:
+        python.lxml_free(c_ns_cache.ns_map)
+
+    # 3) fix the names in the tree if we moved it from a different thread
+    if doc._c_doc.dict is not c_source_doc.dict:
+        fixThreadDictNames(c_start_node, c_source_doc.dict, doc._c_doc.dict)
+
+    # 4) fix _Document references
+    #    (and potentially deallocate the source document)
+    if proxy_count > 0:
+        if proxy_count == 1 and c_start_node._private is not NULL:
+            proxy = getProxy(c_start_node)
+            if proxy is not None:
+                if proxy._doc is not doc:
+                    proxy._doc = doc
+            else:
+                fixElementDocument(c_start_node, doc, proxy_count)
+        else:
+            fixElementDocument(c_start_node, doc, proxy_count)
+
+    return 0
+
+
+cdef void _setTreeDoc(xmlNode* c_node, xmlDoc* c_doc) noexcept:
+    """Adaptation of 'xmlSetTreeDoc()' that deep-fixes the document links iteratively.
+    It avoids https://gitlab.gnome.org/GNOME/libxml2/issues/42
+    """
+    tree.BEGIN_FOR_EACH_FROM(c_node, c_node, 1)
+    if c_node.type == tree.XML_ELEMENT_NODE:
+        c_attr = <tree.xmlAttr*>c_node.properties
+        while c_attr:
+            if c_attr.atype == tree.XML_ATTRIBUTE_ID:
+                tree.xmlRemoveID(c_node.doc, c_attr)
+            c_attr.doc = c_doc
+            _fixDocChildren(c_attr.children, c_doc)
+            c_attr = c_attr.next
+    # Set doc link for all nodes, not only elements.
+    c_node.doc = c_doc
+    tree.END_FOR_EACH_FROM(c_node)
+
+
+cdef inline void _fixDocChildren(xmlNode* c_child, xmlDoc* c_doc) noexcept:
+    while c_child:
+        c_child.doc = c_doc
+        if c_child.children:
+            _fixDocChildren(c_child.children, c_doc)
+        c_child = c_child.next
+
+
+cdef int _fixCNs(_Document doc, xmlNode* c_start_node, xmlNode* c_node,
+                 _nscache* c_ns_cache, xmlNs* c_del_ns_list) except -1:
+    cdef xmlNs* c_ns = NULL
+    cdef bint is_prefixed_attr = (c_node.type == tree.XML_ATTRIBUTE_NODE and c_node.ns.prefix)
+
+    for ns_map in c_ns_cache.ns_map[:c_ns_cache.last]:
+        if c_node.ns is ns_map.old:
+            if is_prefixed_attr and not ns_map.new.prefix:
+                # avoid dropping prefix from attributes
+                continue
+            c_ns = ns_map.new
+            break
+
+    if c_ns:
+        c_node.ns = c_ns
+    else:
+        # not in cache or not acceptable
+        # => find a replacement from this document
+        try:
+            c_ns = doc._findOrBuildNodeNs(
+                c_start_node, c_node.ns.href, c_node.ns.prefix,
+                c_node.type == tree.XML_ATTRIBUTE_NODE)
+            c_node.ns = c_ns
+            _appendToNsCache(c_ns_cache, c_node.ns, c_ns)
+        except:
+            _cleanUpFromNamespaceAdaptation(c_start_node, c_ns_cache, c_del_ns_list)
+            raise
+    return 0
+
+
+cdef int fixElementDocument(xmlNode* c_element, _Document doc,
+                             size_t proxy_count) except -1:
+    cdef xmlNode* c_node = c_element
+    cdef _Element proxy = None # init-to-None required due to fake-loop below
+    tree.BEGIN_FOR_EACH_FROM(c_element, c_node, 1)
+    if c_node._private is not NULL:
+        proxy = getProxy(c_node)
+        if proxy is not None:
+            if proxy._doc is not doc:
+                proxy._doc = doc
+            proxy_count -= 1
+            if proxy_count == 0:
+                return 0
+    tree.END_FOR_EACH_FROM(c_node)
+
+
+cdef void fixThreadDictNames(xmlNode* c_element,
+                             tree.xmlDict* c_src_dict,
+                             tree.xmlDict* c_dict) noexcept nogil:
+    # re-assign the names of tags and attributes
+    #
+    # this should only be called when the element is based on a
+    # different libxml2 tag name dictionary
+    if c_element.type == tree.XML_DOCUMENT_NODE or \
+            c_element.type == tree.XML_HTML_DOCUMENT_NODE:
+        # may define "xml" namespace
+        fixThreadDictNsForNode(c_element, c_src_dict, c_dict)
+        if c_element.doc.extSubset:
+            fixThreadDictNamesForDtd(c_element.doc.extSubset, c_src_dict, c_dict)
+        if c_element.doc.intSubset:
+            fixThreadDictNamesForDtd(c_element.doc.intSubset, c_src_dict, c_dict)
+        c_element = c_element.children
+        while c_element is not NULL:
+            fixThreadDictNamesForNode(c_element, c_src_dict, c_dict)
+            c_element = c_element.next
+    elif tree._isElementOrXInclude(c_element):
+        fixThreadDictNamesForNode(c_element, c_src_dict, c_dict)
+
+
+cdef inline void _fixThreadDictPtr(const_xmlChar** c_ptr,
+                                   tree.xmlDict* c_src_dict,
+                                   tree.xmlDict* c_dict) noexcept nogil:
+    c_str = c_ptr[0]
+    if c_str and c_src_dict and tree.xmlDictOwns(c_src_dict, c_str):
+        # return value can be NULL on memory error, but we don't handle that here
+        c_str = tree.xmlDictLookup(c_dict, c_str, -1)
+        if c_str:
+            c_ptr[0] = c_str
+
+
+cdef void fixThreadDictNamesForNode(xmlNode* c_element,
+                                    tree.xmlDict* c_src_dict,
+                                    tree.xmlDict* c_dict) noexcept nogil:
+    cdef xmlNode* c_node = c_element
+    tree.BEGIN_FOR_EACH_FROM(c_element, c_node, 1)
+    if c_node.type in (tree.XML_ELEMENT_NODE, tree.XML_XINCLUDE_START):
+        fixThreadDictNamesForAttributes(
+            c_node.properties, c_src_dict, c_dict)
+        fixThreadDictNsForNode(c_node, c_src_dict, c_dict)
+        _fixThreadDictPtr(&c_node.name, c_src_dict, c_dict)
+    elif c_node.type == tree.XML_TEXT_NODE:
+        # libxml2's SAX2 parser interns some indentation space
+        fixThreadDictContentForNode(c_node, c_src_dict, c_dict)
+    elif c_node.type == tree.XML_COMMENT_NODE:
+        pass  # don't touch c_node.name
+    else:
+        _fixThreadDictPtr(&c_node.name, c_src_dict, c_dict)
+    tree.END_FOR_EACH_FROM(c_node)
+
+
+cdef inline void fixThreadDictNamesForAttributes(tree.xmlAttr* c_attr,
+                                                 tree.xmlDict* c_src_dict,
+                                                 tree.xmlDict* c_dict) noexcept nogil:
+    cdef xmlNode* c_child
+    cdef xmlNode* c_node = <xmlNode*>c_attr
+    while c_node is not NULL:
+        if c_node.type not in (tree.XML_TEXT_NODE, tree.XML_COMMENT_NODE):
+            _fixThreadDictPtr(&c_node.name, c_src_dict, c_dict)
+        # libxml2 keeps some (!) attribute values in the dict
+        c_child = c_node.children
+        while c_child is not NULL:
+            fixThreadDictContentForNode(c_child, c_src_dict, c_dict)
+            c_child = c_child.next
+        c_node = c_node.next
+
+
+cdef inline void fixThreadDictContentForNode(xmlNode* c_node,
+                                             tree.xmlDict* c_src_dict,
+                                             tree.xmlDict* c_dict) noexcept nogil:
+    if c_node.content is not NULL and \
+           c_node.content is not <xmlChar*>&c_node.properties:
+        if tree.xmlDictOwns(c_src_dict, c_node.content):
+            # result can be NULL on memory error, but we don't handle that here
+            c_node.content = <xmlChar*>tree.xmlDictLookup(c_dict, c_node.content, -1)
+
+
+cdef inline void fixThreadDictNsForNode(xmlNode* c_node,
+                                        tree.xmlDict* c_src_dict,
+                                        tree.xmlDict* c_dict) noexcept nogil:
+    cdef xmlNs* c_ns = c_node.nsDef
+    while c_ns is not NULL:
+        _fixThreadDictPtr(&c_ns.href, c_src_dict, c_dict)
+        _fixThreadDictPtr(&c_ns.prefix, c_src_dict, c_dict)
+        c_ns = c_ns.next
+
+
+cdef void fixThreadDictNamesForDtd(tree.xmlDtd* c_dtd,
+                                   tree.xmlDict* c_src_dict,
+                                   tree.xmlDict* c_dict) noexcept nogil:
+    cdef xmlNode* c_node
+    cdef tree.xmlElement* c_element
+    cdef tree.xmlAttribute* c_attribute
+    cdef tree.xmlEntity* c_entity
+
+    c_node = c_dtd.children
+    while c_node:
+        if c_node.type == tree.XML_ELEMENT_DECL:
+            c_element = <tree.xmlElement*>c_node
+            if c_element.content:
+                _fixThreadDictPtr(&c_element.content.name, c_src_dict, c_dict)
+                _fixThreadDictPtr(&c_element.content.prefix, c_src_dict, c_dict)
+            c_attribute = c_element.attributes
+            while c_attribute:
+                if tree.LIBXML_VERSION < 21500:
+                    # libxml2 2.15 no longer stores default values in the dict.
+                    # See https://gitlab.gnome.org/GNOME/libxml2/-/commit/24628f25
+                    _fixThreadDictPtr(<const_xmlChar**>&c_attribute.defaultValue, c_src_dict, c_dict)
+                _fixThreadDictPtr(&c_attribute.name, c_src_dict, c_dict)
+                _fixThreadDictPtr(&c_attribute.prefix, c_src_dict, c_dict)
+                _fixThreadDictPtr(&c_attribute.elem, c_src_dict, c_dict)
+                c_attribute = c_attribute.nexth
+        elif c_node.type == tree.XML_ENTITY_DECL:
+            c_entity = <tree.xmlEntity*>c_node
+            _fixThreadDictPtr(&c_entity.name, c_src_dict, c_dict)
+            _fixThreadDictPtr(&c_entity.ExternalID, c_src_dict, c_dict)
+            _fixThreadDictPtr(&c_entity.SystemID, c_src_dict, c_dict)
+            _fixThreadDictPtr(<const_xmlChar**>&c_entity.content, c_src_dict, c_dict)
+        c_node = c_node.next
+
+
+################################################################################
+# adopt an xmlDoc from an external libxml2 document source
+
+cdef _Document _adoptForeignDoc(xmlDoc* c_doc, _BaseParser parser=None, bint is_owned=True):
+    """Convert and wrap an externally produced xmlDoc for use in lxml.
+    Assures that all '_private' pointers are NULL to prevent accidental
+    dereference into lxml proxy objects.
+    """
+    if c_doc is NULL:
+        raise ValueError("Illegal document provided: NULL")
+    if c_doc.type not in (tree.XML_DOCUMENT_NODE, tree.XML_HTML_DOCUMENT_NODE):
+        doc_type = c_doc.type
+        if is_owned:
+            tree.xmlFreeDoc(c_doc)
+        raise ValueError(f"Illegal document provided: expected XML or HTML, found {doc_type}")
+
+    cdef xmlNode* c_node = <xmlNode*>c_doc
+
+    if is_owned:
+        tree.BEGIN_FOR_EACH_FROM(<xmlNode*>c_doc, c_node, 1)
+        c_node._private = NULL
+        tree.END_FOR_EACH_FROM(c_node)
+    else:
+        # create a fresh copy that lxml owns
+        c_doc = tree.xmlCopyDoc(c_doc, 1)
+        if c_doc is NULL:
+            raise MemoryError()
+
+    return _documentFactory(c_doc, parser)

.venv/lib/python3.12/site-packages/lxml/public-api.pxi

@@ -0,0 +1,178 @@
+# Public C API for lxml.etree
+
+cdef public api _Element deepcopyNodeToDocument(_Document doc, xmlNode* c_root):
+    "Recursively copy the element into the document. doc is not modified."
+    cdef xmlNode* c_node
+    c_node = _copyNodeToDoc(c_root, doc._c_doc)
+    return _elementFactory(doc, c_node)
+
+cdef public api _ElementTree elementTreeFactory(_Element context_node):
+    _assertValidNode(context_node)
+    return newElementTree(context_node, _ElementTree)
+
+cdef public api _ElementTree newElementTree(_Element context_node,
+                                            object subclass):
+    if <void*>context_node is NULL or context_node is None:
+        raise TypeError
+    _assertValidNode(context_node)
+    return _newElementTree(context_node._doc, context_node, subclass)
+
+cdef public api _ElementTree adoptExternalDocument(xmlDoc* c_doc, parser, bint is_owned):
+    if c_doc is NULL:
+        raise TypeError
+    doc = _adoptForeignDoc(c_doc, parser, is_owned)
+    return _elementTreeFactory(doc, None)
+
+cdef public api _Element elementFactory(_Document doc, xmlNode* c_node):
+    if c_node is NULL or doc is None:
+        raise TypeError
+    return _elementFactory(doc, c_node)
+
+cdef public api _Element makeElement(tag, _Document doc, parser,
+                                     text, tail, attrib, nsmap):
+    return _makeElement(tag, NULL, doc, parser, text, tail, attrib, nsmap, None)
+
+cdef public api _Element makeSubElement(_Element parent, tag, text, tail,
+                                        attrib, nsmap):
+    _assertValidNode(parent)
+    return _makeSubElement(parent, tag, text, tail, attrib, nsmap, None)
+
+cdef public api void setElementClassLookupFunction(
+    _element_class_lookup_function function, state):
+    _setElementClassLookupFunction(function, state)
+
+cdef public api object lookupDefaultElementClass(state, doc, xmlNode* c_node):
+    return _lookupDefaultElementClass(state, doc, c_node)
+
+cdef public api object lookupNamespaceElementClass(state, doc, xmlNode* c_node):
+    return _find_nselement_class(state, doc, c_node)
+
+cdef public api object callLookupFallback(FallbackElementClassLookup lookup,
+                                          _Document doc, xmlNode* c_node):
+    return _callLookupFallback(lookup, doc, c_node)
+
+cdef public api int tagMatches(xmlNode* c_node, const_xmlChar* c_href, const_xmlChar* c_name) noexcept:
+    if c_node is NULL:
+        return -1
+    return _tagMatches(c_node, c_href, c_name)
+
+cdef public api _Document documentOrRaise(object input):
+    return _documentOrRaise(input)
+
+cdef public api _Element rootNodeOrRaise(object input):
+    return _rootNodeOrRaise(input)
+
+cdef public api bint hasText(xmlNode* c_node) noexcept:
+    return _hasText(c_node)
+
+cdef public api bint hasTail(xmlNode* c_node) noexcept:
+    return _hasTail(c_node)
+
+cdef public api unicode textOf(xmlNode* c_node):
+    if c_node is NULL:
+        return None
+    return _collectText(c_node.children)
+
+cdef public api unicode tailOf(xmlNode* c_node):
+    if c_node is NULL:
+        return None
+    return _collectText(c_node.next)
+
+cdef public api int setNodeText(xmlNode* c_node, text) except -1:
+    if c_node is NULL:
+        raise ValueError
+    return _setNodeText(c_node, text)
+
+cdef public api int setTailText(xmlNode* c_node, text) except -1:
+    if c_node is NULL:
+        raise ValueError
+    return _setTailText(c_node, text)
+
+cdef public api unicode attributeValue(xmlNode* c_element, xmlAttr* c_attrib_node):
+    return _attributeValue(c_element, c_attrib_node)
+
+cdef public api unicode attributeValueFromNsName(xmlNode* c_element,
+                                                const_xmlChar* ns, const_xmlChar* name):
+    return _attributeValueFromNsName(c_element, ns, name)
+
+cdef public api object getAttributeValue(_Element element, key, default):
+    _assertValidNode(element)
+    return _getAttributeValue(element, key, default)
+
+cdef public api object iterattributes(_Element element, int keysvalues):
+    _assertValidNode(element)
+    return _attributeIteratorFactory(element, keysvalues)
+
+cdef public api list collectAttributes(xmlNode* c_element, int keysvalues):
+    return _collectAttributes(c_element, keysvalues)
+
+cdef public api int setAttributeValue(_Element element, key, value) except -1:
+    _assertValidNode(element)
+    return _setAttributeValue(element, key, value)
+
+cdef public api int delAttribute(_Element element, key) except -1:
+    _assertValidNode(element)
+    return _delAttribute(element, key)
+
+cdef public api int delAttributeFromNsName(tree.xmlNode* c_element,
+                                           const_xmlChar* c_href, const_xmlChar* c_name) noexcept:
+    return _delAttributeFromNsName(c_element, c_href, c_name)
+
+cdef public api bint hasChild(xmlNode* c_node) noexcept:
+    return _hasChild(c_node)
+
+cdef public api xmlNode* findChild(xmlNode* c_node, Py_ssize_t index) noexcept:
+    return _findChild(c_node, index)
+
+cdef public api xmlNode* findChildForwards(xmlNode* c_node, Py_ssize_t index) noexcept:
+    return _findChildForwards(c_node, index)
+
+cdef public api xmlNode* findChildBackwards(xmlNode* c_node, Py_ssize_t index) noexcept:
+    return _findChildBackwards(c_node, index)
+
+cdef public api xmlNode* nextElement(xmlNode* c_node) noexcept:
+    return _nextElement(c_node)
+
+cdef public api xmlNode* previousElement(xmlNode* c_node) noexcept:
+    return _previousElement(c_node)
+
+cdef public api void appendChild(_Element parent, _Element child):
+    # deprecated, use appendChildToElement() instead!
+    _appendChild(parent, child)
+
+cdef public api int appendChildToElement(_Element parent, _Element child) except -1:
+    return _appendChild(parent, child)
+
+cdef public api unicode pyunicode(const_xmlChar* s):
+    if s is NULL:
+        raise TypeError
+    return funicode(s)
+
+cdef public api bytes utf8(object s):
+    return _utf8(s)
+
+cdef public api tuple getNsTag(object tag):
+    return _getNsTag(tag)
+
+cdef public api tuple getNsTagWithEmptyNs(object tag):
+    return _getNsTagWithEmptyNs(tag)
+
+cdef public api unicode namespacedName(xmlNode* c_node):
+    return _namespacedName(c_node)
+
+cdef public api unicode namespacedNameFromNsName(const_xmlChar* href, const_xmlChar* name):
+    return _namespacedNameFromNsName(href, name)
+
+cdef public api void iteratorStoreNext(_ElementIterator iterator, _Element node):
+    # deprecated!
+    iterator._storeNext(node)
+
+cdef public api void initTagMatch(_ElementTagMatcher matcher, tag):
+    # deprecated!
+    matcher._initTagMatch(tag)
+
+cdef public api tree.xmlNs* findOrBuildNodeNsPrefix(
+        _Document doc, xmlNode* c_node, const_xmlChar* href, const_xmlChar* prefix) except NULL:
+    if doc is None:
+        raise TypeError
+    return doc._findOrBuildNodeNs(c_node, href, prefix, 0)

.venv/lib/python3.12/site-packages/lxml/pyclasslookup.py

@@ -0,0 +1,3 @@
+# dummy module for backwards compatibility
+
+from lxml.etree import PythonElementClassLookup

.venv/lib/python3.12/site-packages/lxml/readonlytree.pxi

@@ -0,0 +1,565 @@
+# read-only tree implementation
+
+@cython.internal
+cdef class _ReadOnlyProxy:
+    "A read-only proxy class suitable for PIs/Comments (for internal use only!)."
+    cdef bint _free_after_use
+    cdef xmlNode* _c_node
+    cdef _ReadOnlyProxy _source_proxy
+    cdef list _dependent_proxies
+    def __cinit__(self):
+        self._c_node = NULL
+        self._free_after_use = 0
+
+    cdef int _assertNode(self) except -1:
+        """This is our way of saying: this proxy is invalid!
+        """
+        if not self._c_node:
+            raise ReferenceError("Proxy invalidated!")
+        return 0
+
+    cdef int _raise_unsupported_type(self) except -1:
+        raise TypeError(f"Unsupported node type: {self._c_node.type}")
+
+    cdef void free_after_use(self) noexcept:
+        """Should the xmlNode* be freed when releasing the proxy?
+        """
+        self._free_after_use = 1
+
+    @property
+    def tag(self):
+        """Element tag
+        """
+        self._assertNode()
+        if self._c_node.type == tree.XML_ELEMENT_NODE:
+            return _namespacedName(self._c_node)
+        elif self._c_node.type == tree.XML_PI_NODE:
+            return ProcessingInstruction
+        elif self._c_node.type == tree.XML_COMMENT_NODE:
+            return Comment
+        elif self._c_node.type == tree.XML_ENTITY_REF_NODE:
+            return Entity
+        else:
+            self._raise_unsupported_type()
+
+    @property
+    def text(self):
+        """Text before the first subelement. This is either a string or
+        the value None, if there was no text.
+        """
+        self._assertNode()
+        if self._c_node.type == tree.XML_ELEMENT_NODE:
+            return _collectText(self._c_node.children)
+        elif self._c_node.type in (tree.XML_PI_NODE,
+                                   tree.XML_COMMENT_NODE):
+            if self._c_node.content is NULL:
+                return ''
+            else:
+                return funicode(self._c_node.content)
+        elif self._c_node.type == tree.XML_ENTITY_REF_NODE:
+            return f'&{funicode(self._c_node.name)};'
+        else:
+            self._raise_unsupported_type()
+
+    @property
+    def tail(self):
+        """Text after this element's end tag, but before the next sibling
+        element's start tag. This is either a string or the value None, if
+        there was no text.
+        """
+        self._assertNode()
+        return _collectText(self._c_node.next)
+
+    @property
+    def sourceline(self):
+        """Original line number as found by the parser or None if unknown.
+        """
+        cdef long line
+        self._assertNode()
+        line = tree.xmlGetLineNo(self._c_node)
+        if line > 0:
+            return line
+        else:
+            return None
+
+    def __repr__(self):
+        self._assertNode()
+        if self._c_node.type == tree.XML_ELEMENT_NODE:
+            return "<Element %s at 0x%x>" % (self.tag, id(self))
+        elif self._c_node.type == tree.XML_COMMENT_NODE:
+            return "<!--%s-->" % self.text
+        elif self._c_node.type == tree.XML_ENTITY_NODE:
+            return "&%s;" % funicode(self._c_node.name)
+        elif self._c_node.type == tree.XML_PI_NODE:
+            text = self.text
+            if text:
+                return "<?%s %s?>" % (self.target, text)
+            else:
+                return "<?%s?>" % self.target
+        else:
+            self._raise_unsupported_type()
+
+    def __getitem__(self, x):
+        """Returns the subelement at the given position or the requested
+        slice.
+        """
+        cdef xmlNode* c_node = NULL
+        cdef Py_ssize_t step = 0, slicelength = 0
+        cdef Py_ssize_t c, i
+        cdef _node_to_node_function next_element
+        cdef list result
+        self._assertNode()
+        if isinstance(x, slice):
+            # slicing
+            if _isFullSlice(<slice>x):
+                return _collectChildren(self)
+            _findChildSlice(<slice>x, self._c_node, &c_node, &step, &slicelength)
+            if c_node is NULL:
+                return []
+            if step > 0:
+                next_element = _nextElement
+            else:
+                step = -step if step != python.PY_SSIZE_T_MIN else python.PY_SSIZE_T_MAX
+                next_element = _previousElement
+            result = []
+            c = 0
+            while c_node is not NULL and c < slicelength:
+                result.append(_newReadOnlyProxy(self._source_proxy, c_node))
+                result.append(_elementFactory(self._doc, c_node))
+                c = c + 1
+                for i from 0 <= i < step:
+                    c_node = next_element(c_node)
+            return result
+        else:
+            # indexing
+            c_node = _findChild(self._c_node, x)
+            if c_node is NULL:
+                raise IndexError, "list index out of range"
+            return _newReadOnlyProxy(self._source_proxy, c_node)
+
+    def __len__(self):
+        """Returns the number of subelements.
+        """
+        cdef Py_ssize_t c
+        cdef xmlNode* c_node
+        self._assertNode()
+        c = 0
+        c_node = self._c_node.children
+        while c_node is not NULL:
+            if tree._isElement(c_node):
+                c = c + 1
+            c_node = c_node.next
+        return c
+
+    def __bool__(self):
+        cdef xmlNode* c_node
+        self._assertNode()
+        c_node = _findChildBackwards(self._c_node, 0)
+        return c_node != NULL
+
+    def __deepcopy__(self, memo):
+        "__deepcopy__(self, memo)"
+        return self.__copy__()
+
+    cpdef __copy__(self):
+        "__copy__(self)"
+        cdef xmlDoc* c_doc
+        cdef xmlNode* c_node
+        cdef _Document new_doc
+        if self._c_node is NULL:
+            return self
+        c_doc = _copyDocRoot(self._c_node.doc, self._c_node) # recursive
+        new_doc = _documentFactory(c_doc, None)
+        root = new_doc.getroot()
+        if root is not None:
+            return root
+        # Comment/PI
+        c_node = c_doc.children
+        while c_node is not NULL and c_node.type != self._c_node.type:
+            c_node = c_node.next
+        if c_node is NULL:
+            return None
+        return _elementFactory(new_doc, c_node)
+
+    def __iter__(self):
+        return iter(self.getchildren())
+
+    def iterchildren(self, tag=None, *, reversed=False):
+        """iterchildren(self, tag=None, reversed=False)
+
+        Iterate over the children of this element.
+        """
+        children = self.getchildren()
+        if tag is not None and tag != '*':
+            children = [ el for el in children if el.tag == tag ]
+        if reversed:
+            children = children[::-1]
+        return iter(children)
+
+    cpdef getchildren(self):
+        """Returns all subelements. The elements are returned in document
+        order.
+        """
+        cdef xmlNode* c_node
+        cdef list result
+        self._assertNode()
+        result = []
+        c_node = self._c_node.children
+        while c_node is not NULL:
+            if tree._isElement(c_node):
+                result.append(_newReadOnlyProxy(self._source_proxy, c_node))
+            c_node = c_node.next
+        return result
+
+    def getparent(self):
+        """Returns the parent of this element or None for the root element.
+        """
+        cdef xmlNode* c_parent
+        self._assertNode()
+        c_parent = self._c_node.parent
+        if c_parent is NULL or not tree._isElement(c_parent):
+            return None
+        else:
+            return _newReadOnlyProxy(self._source_proxy, c_parent)
+
+    def getnext(self):
+        """Returns the following sibling of this element or None.
+        """
+        cdef xmlNode* c_node
+        self._assertNode()
+        c_node = _nextElement(self._c_node)
+        if c_node is not NULL:
+            return _newReadOnlyProxy(self._source_proxy, c_node)
+        return None
+
+    def getprevious(self):
+        """Returns the preceding sibling of this element or None.
+        """
+        cdef xmlNode* c_node
+        self._assertNode()
+        c_node = _previousElement(self._c_node)
+        if c_node is not NULL:
+            return _newReadOnlyProxy(self._source_proxy, c_node)
+        return None
+
+
+@cython.final
+@cython.internal
+cdef class _ReadOnlyPIProxy(_ReadOnlyProxy):
+    """A read-only proxy for processing instructions (for internal use only!)"""
+    @property
+    def target(self):
+        self._assertNode()
+        return funicode(self._c_node.name)
+
+@cython.final
+@cython.internal
+cdef class _ReadOnlyEntityProxy(_ReadOnlyProxy):
+    """A read-only proxy for entity references (for internal use only!)"""
+    property name:
+        def __get__(self):
+            return funicode(self._c_node.name)
+
+        def __set__(self, value):
+            value_utf = _utf8(value)
+            if '&' in value or ';' in value:
+                raise ValueError(f"Invalid entity name '{value}'")
+            tree.xmlNodeSetName(self._c_node, _xcstr(value_utf))
+
+    @property
+    def text(self):
+        return f'&{funicode(self._c_node.name)};'
+
+
+@cython.internal
+cdef class _ReadOnlyElementProxy(_ReadOnlyProxy):
+    """The main read-only Element proxy class (for internal use only!)."""
+
+    @property
+    def attrib(self):
+        self._assertNode()
+        return dict(_collectAttributes(self._c_node, 3))
+
+    @property
+    def prefix(self):
+        """Namespace prefix or None.
+        """
+        self._assertNode()
+        if self._c_node.ns is not NULL:
+            if self._c_node.ns.prefix is not NULL:
+                return funicode(self._c_node.ns.prefix)
+        return None
+
+    @property
+    def nsmap(self):
+        """Namespace prefix->URI mapping known in the context of this
+        Element.  This includes all namespace declarations of the
+        parents.
+
+        Note that changing the returned dict has no effect on the Element.
+        """
+        self._assertNode()
+        return _build_nsmap(self._c_node)
+
+    def get(self, key, default=None):
+        """Gets an element attribute.
+        """
+        self._assertNode()
+        return _getNodeAttributeValue(self._c_node, key, default)
+
+    def keys(self):
+        """Gets a list of attribute names. The names are returned in an
+        arbitrary order (just like for an ordinary Python dictionary).
+        """
+        self._assertNode()
+        return _collectAttributes(self._c_node, 1)
+
+    def values(self):
+        """Gets element attributes, as a sequence. The attributes are returned
+        in an arbitrary order.
+        """
+        self._assertNode()
+        return _collectAttributes(self._c_node, 2)
+
+    def items(self):
+        """Gets element attributes, as a sequence. The attributes are returned
+        in an arbitrary order.
+        """
+        self._assertNode()
+        return _collectAttributes(self._c_node, 3)
+
+cdef _ReadOnlyProxy _newReadOnlyProxy(
+    _ReadOnlyProxy source_proxy, xmlNode* c_node):
+    cdef _ReadOnlyProxy el
+    if c_node.type == tree.XML_ELEMENT_NODE:
+        el = _ReadOnlyElementProxy.__new__(_ReadOnlyElementProxy)
+    elif c_node.type == tree.XML_PI_NODE:
+        el = _ReadOnlyPIProxy.__new__(_ReadOnlyPIProxy)
+    elif c_node.type in (tree.XML_COMMENT_NODE,
+                         tree.XML_ENTITY_REF_NODE):
+        el = _ReadOnlyProxy.__new__(_ReadOnlyProxy)
+    else:
+        raise TypeError(f"Unsupported element type: {c_node.type}")
+    el._c_node = c_node
+    _initReadOnlyProxy(el, source_proxy)
+    return el
+
+cdef inline _initReadOnlyProxy(_ReadOnlyProxy el,
+                               _ReadOnlyProxy source_proxy):
+    if source_proxy is None:
+        el._source_proxy = el
+        el._dependent_proxies = [el]
+    else:
+        el._source_proxy = source_proxy
+        source_proxy._dependent_proxies.append(el)
+
+cdef _freeReadOnlyProxies(_ReadOnlyProxy sourceProxy):
+    cdef xmlNode* c_node
+    cdef _ReadOnlyProxy el
+    if sourceProxy is None:
+        return
+    if sourceProxy._dependent_proxies is None:
+        return
+    for el in sourceProxy._dependent_proxies:
+        c_node = el._c_node
+        el._c_node = NULL
+        if el._free_after_use:
+            tree.xmlFreeNode(c_node)
+    del sourceProxy._dependent_proxies[:]
+
+# opaque wrapper around non-element nodes, e.g. the document node
+#
+# This class does not imply any restrictions on modifiability or
+# read-only status of the node, so use with caution.
+
+@cython.internal
+cdef class _OpaqueNodeWrapper:
+    cdef tree.xmlNode* _c_node
+    def __init__(self):
+        raise TypeError, "This type cannot be instantiated from Python"
+
+@cython.final
+@cython.internal
+cdef class _OpaqueDocumentWrapper(_OpaqueNodeWrapper):
+    cdef int _assertNode(self) except -1:
+        """This is our way of saying: this proxy is invalid!
+        """
+        assert self._c_node is not NULL, "Proxy invalidated!"
+        return 0
+
+    cpdef append(self, other_element):
+        """Append a copy of an Element to the list of children.
+        """
+        cdef xmlNode* c_next
+        cdef xmlNode* c_node
+        self._assertNode()
+        c_node = _roNodeOf(other_element)
+        if c_node.type == tree.XML_ELEMENT_NODE:
+            if tree.xmlDocGetRootElement(<tree.xmlDoc*>self._c_node) is not NULL:
+                raise ValueError, "cannot append, document already has a root element"
+        elif c_node.type not in (tree.XML_PI_NODE, tree.XML_COMMENT_NODE):
+            raise TypeError, f"unsupported element type for top-level node: {c_node.type}"
+        c_node = _copyNodeToDoc(c_node, <tree.xmlDoc*>self._c_node)
+        c_next = c_node.next
+        tree.xmlAddChild(self._c_node, c_node)
+        _moveTail(c_next, c_node)
+
+    def extend(self, elements):
+        """Append a copy of all Elements from a sequence to the list of
+        children.
+        """
+        self._assertNode()
+        for element in elements:
+            self.append(element)
+
+cdef _OpaqueNodeWrapper _newOpaqueAppendOnlyNodeWrapper(xmlNode* c_node):
+    cdef _OpaqueNodeWrapper node
+    if c_node.type in (tree.XML_DOCUMENT_NODE, tree.XML_HTML_DOCUMENT_NODE):
+        node = _OpaqueDocumentWrapper.__new__(_OpaqueDocumentWrapper)
+    else:
+        node = _OpaqueNodeWrapper.__new__(_OpaqueNodeWrapper)
+    node._c_node = c_node
+    return node
+
+# element proxies that allow restricted modification
+
+@cython.internal
+cdef class _ModifyContentOnlyProxy(_ReadOnlyProxy):
+    """A read-only proxy that allows changing the text content.
+    """
+    property text:
+        def __get__(self):
+            self._assertNode()
+            if self._c_node.content is NULL:
+                return ''
+            else:
+                return funicode(self._c_node.content)
+
+        def __set__(self, value):
+            cdef tree.xmlDict* c_dict
+            self._assertNode()
+            if value is None:
+                c_text = <const_xmlChar*>NULL
+            else:
+                value = _utf8(value)
+                c_text = _xcstr(value)
+            tree.xmlNodeSetContent(self._c_node, c_text)
+
+@cython.final
+@cython.internal
+cdef class _ModifyContentOnlyPIProxy(_ModifyContentOnlyProxy):
+    """A read-only proxy that allows changing the text/target content of a
+    processing instruction.
+    """
+    property target:
+        def __get__(self):
+            self._assertNode()
+            return funicode(self._c_node.name)
+
+        def __set__(self, value):
+            self._assertNode()
+            value = _utf8(value)
+            c_text = _xcstr(value)
+            tree.xmlNodeSetName(self._c_node, c_text)
+
+@cython.final
+@cython.internal
+cdef class _ModifyContentOnlyEntityProxy(_ModifyContentOnlyProxy):
+    "A read-only proxy for entity references (for internal use only!)"
+    property name:
+        def __get__(self):
+            return funicode(self._c_node.name)
+
+        def __set__(self, value):
+            value = _utf8(value)
+            assert '&' not in value and ';' not in value, \
+                f"Invalid entity name '{value}'"
+            c_text = _xcstr(value)
+            tree.xmlNodeSetName(self._c_node, c_text)
+
+
+@cython.final
+@cython.internal
+cdef class _AppendOnlyElementProxy(_ReadOnlyElementProxy):
+    """A read-only element that allows adding children and changing the
+    text content (i.e. everything that adds to the subtree).
+    """
+    cpdef append(self, other_element):
+        """Append a copy of an Element to the list of children.
+        """
+        cdef xmlNode* c_next
+        cdef xmlNode* c_node
+        self._assertNode()
+        c_node = _roNodeOf(other_element)
+        c_node = _copyNodeToDoc(c_node, self._c_node.doc)
+        c_next = c_node.next
+        tree.xmlAddChild(self._c_node, c_node)
+        _moveTail(c_next, c_node)
+
+    def extend(self, elements):
+        """Append a copy of all Elements from a sequence to the list of
+        children.
+        """
+        self._assertNode()
+        for element in elements:
+            self.append(element)
+
+    property text:
+        """Text before the first subelement. This is either a string or the
+        value None, if there was no text.
+        """
+        def __get__(self):
+            self._assertNode()
+            return _collectText(self._c_node.children)
+
+        def __set__(self, value):
+            self._assertNode()
+            if isinstance(value, QName):
+                value = _resolveQNameText(self, value).decode('utf8')
+            _setNodeText(self._c_node, value)
+
+
+cdef _ReadOnlyProxy _newAppendOnlyProxy(
+    _ReadOnlyProxy source_proxy, xmlNode* c_node):
+    cdef _ReadOnlyProxy el
+    if c_node.type == tree.XML_ELEMENT_NODE:
+        el = _AppendOnlyElementProxy.__new__(_AppendOnlyElementProxy)
+    elif c_node.type == tree.XML_PI_NODE:
+        el = _ModifyContentOnlyPIProxy.__new__(_ModifyContentOnlyPIProxy)
+    elif c_node.type == tree.XML_COMMENT_NODE:
+        el = _ModifyContentOnlyProxy.__new__(_ModifyContentOnlyProxy)
+    else:
+        raise TypeError(f"Unsupported element type: {c_node.type}")
+    el._c_node = c_node
+    _initReadOnlyProxy(el, source_proxy)
+    return el
+
+cdef xmlNode* _roNodeOf(element) except NULL:
+    cdef xmlNode* c_node
+    if isinstance(element, _Element):
+        c_node = (<_Element>element)._c_node
+    elif isinstance(element, _ReadOnlyProxy):
+        c_node = (<_ReadOnlyProxy>element)._c_node
+    elif isinstance(element, _OpaqueNodeWrapper):
+        c_node = (<_OpaqueNodeWrapper>element)._c_node
+    else:
+        raise TypeError, f"invalid argument type {type(element)}"
+
+    if c_node is NULL:
+        raise TypeError, "invalid element"
+    return c_node
+
+cdef xmlNode* _nonRoNodeOf(element) except NULL:
+    cdef xmlNode* c_node
+    if isinstance(element, _Element):
+        c_node = (<_Element>element)._c_node
+    elif isinstance(element, _AppendOnlyElementProxy):
+        c_node = (<_AppendOnlyElementProxy>element)._c_node
+    elif isinstance(element, _OpaqueNodeWrapper):
+        c_node = (<_OpaqueNodeWrapper>element)._c_node
+    else:
+        raise TypeError, f"invalid argument type {type(element)}"
+
+    if c_node is NULL:
+        raise TypeError, "invalid element"
+    return c_node

.venv/lib/python3.12/site-packages/lxml/relaxng.pxi

@@ -0,0 +1,165 @@
+# support for RelaxNG validation
+from lxml.includes cimport relaxng
+
+cdef object _rnc2rng
+try:
+    import rnc2rng as _rnc2rng
+except ImportError:
+    _rnc2rng = None
+
+
+cdef int _require_rnc2rng() except -1:
+    if _rnc2rng is None:
+        raise RelaxNGParseError(
+            'compact syntax not supported (please install rnc2rng)')
+    return 0
+
+
+cdef class RelaxNGError(LxmlError):
+    """Base class for RelaxNG errors.
+    """
+
+cdef class RelaxNGParseError(RelaxNGError):
+    """Error while parsing an XML document as RelaxNG.
+    """
+
+cdef class RelaxNGValidateError(RelaxNGError):
+    """Error while validating an XML document with a RelaxNG schema.
+    """
+
+
+################################################################################
+# RelaxNG
+
+cdef class RelaxNG(_Validator):
+    """RelaxNG(self, etree=None, file=None)
+    Turn a document into a Relax NG validator.
+
+    Either pass a schema as Element or ElementTree, or pass a file or
+    filename through the ``file`` keyword argument.
+    """
+    cdef relaxng.xmlRelaxNG* _c_schema
+    def __cinit__(self):
+        self._c_schema = NULL
+
+    def __init__(self, etree=None, *, file=None):
+        cdef _Document doc
+        cdef _Element root_node
+        cdef xmlDoc* fake_c_doc = NULL
+        cdef relaxng.xmlRelaxNGParserCtxt* parser_ctxt = NULL
+        _Validator.__init__(self)
+        if etree is not None:
+            doc = _documentOrRaise(etree)
+            root_node = _rootNodeOrRaise(etree)
+            fake_c_doc = _fakeRootDoc(doc._c_doc, root_node._c_node)
+            parser_ctxt = relaxng.xmlRelaxNGNewDocParserCtxt(fake_c_doc)
+        elif file is not None:
+            if _isString(file):
+                if file[-4:].lower() == '.rnc':
+                    _require_rnc2rng()
+                    rng_data_utf8 = _utf8(_rnc2rng.dumps(_rnc2rng.load(file)))
+                    doc = _parseMemoryDocument(rng_data_utf8, parser=None, url=file)
+                    parser_ctxt = relaxng.xmlRelaxNGNewDocParserCtxt(doc._c_doc)
+                else:
+                    doc = None
+                    filename = _encodeFilename(file)
+                    with self._error_log:
+                        orig_loader = _register_document_loader()
+                        parser_ctxt = relaxng.xmlRelaxNGNewParserCtxt(_cstr(filename))
+                        _reset_document_loader(orig_loader)
+            elif (_getFilenameForFile(file) or '')[-4:].lower() == '.rnc':
+                _require_rnc2rng()
+                rng_data_utf8 = _utf8(_rnc2rng.dumps(_rnc2rng.load(file)))
+                doc = _parseMemoryDocument(
+                    rng_data_utf8, parser=None, url=_getFilenameForFile(file))
+                parser_ctxt = relaxng.xmlRelaxNGNewDocParserCtxt(doc._c_doc)
+            else:
+                doc = _parseDocument(file, parser=None, base_url=None)
+                parser_ctxt = relaxng.xmlRelaxNGNewDocParserCtxt(doc._c_doc)
+        else:
+            raise RelaxNGParseError, "No tree or file given"
+
+        if parser_ctxt is NULL:
+            if fake_c_doc is not NULL:
+                _destroyFakeDoc(doc._c_doc, fake_c_doc)
+            raise RelaxNGParseError(
+                self._error_log._buildExceptionMessage(
+                    "Document is not parsable as Relax NG"),
+                self._error_log)
+
+        # Need a cast here because older libxml2 releases do not use 'const' in the functype.
+        relaxng.xmlRelaxNGSetParserStructuredErrors(
+            parser_ctxt, <xmlerror.xmlStructuredErrorFunc> _receiveError, <void*>self._error_log)
+        _connectGenericErrorLog(self._error_log, xmlerror.XML_FROM_RELAXNGP)
+        self._c_schema = relaxng.xmlRelaxNGParse(parser_ctxt)
+        _connectGenericErrorLog(None)
+
+        relaxng.xmlRelaxNGFreeParserCtxt(parser_ctxt)
+        if self._c_schema is NULL:
+            if fake_c_doc is not NULL:
+                _destroyFakeDoc(doc._c_doc, fake_c_doc)
+            raise RelaxNGParseError(
+                self._error_log._buildExceptionMessage(
+                    "Document is not valid Relax NG"),
+                self._error_log)
+        if fake_c_doc is not NULL:
+            _destroyFakeDoc(doc._c_doc, fake_c_doc)
+
+    def __dealloc__(self):
+        relaxng.xmlRelaxNGFree(self._c_schema)
+
+    def __call__(self, etree):
+        """__call__(self, etree)
+
+        Validate doc using Relax NG.
+
+        Returns true if document is valid, false if not."""
+        cdef _Document doc
+        cdef _Element root_node
+        cdef xmlDoc* c_doc
+        cdef relaxng.xmlRelaxNGValidCtxt* valid_ctxt
+        cdef int ret
+
+        assert self._c_schema is not NULL, "RelaxNG instance not initialised"
+        doc = _documentOrRaise(etree)
+        root_node = _rootNodeOrRaise(etree)
+
+        valid_ctxt = relaxng.xmlRelaxNGNewValidCtxt(self._c_schema)
+        if valid_ctxt is NULL:
+            raise MemoryError()
+
+        try:
+            self._error_log.clear()
+            # Need a cast here because older libxml2 releases do not use 'const' in the functype.
+            relaxng.xmlRelaxNGSetValidStructuredErrors(
+                valid_ctxt, <xmlerror.xmlStructuredErrorFunc> _receiveError, <void*>self._error_log)
+            _connectGenericErrorLog(self._error_log, xmlerror.XML_FROM_RELAXNGV)
+            c_doc = _fakeRootDoc(doc._c_doc, root_node._c_node)
+            with nogil:
+                ret = relaxng.xmlRelaxNGValidateDoc(valid_ctxt, c_doc)
+            _destroyFakeDoc(doc._c_doc, c_doc)
+        finally:
+            _connectGenericErrorLog(None)
+            relaxng.xmlRelaxNGFreeValidCtxt(valid_ctxt)
+
+        if ret == -1:
+            raise RelaxNGValidateError(
+                "Internal error in Relax NG validation",
+                self._error_log)
+        if ret == 0:
+            return True
+        else:
+            return False
+
+    @classmethod
+    def from_rnc_string(cls, src, base_url=None):
+        """Parse a RelaxNG schema in compact syntax from a text string
+
+        Requires the rnc2rng package to be installed.
+
+        Passing the source URL or file path of the source as 'base_url'
+        will enable resolving resource references relative to the source.
+        """
+        _require_rnc2rng()
+        rng_str = utf8(_rnc2rng.dumps(_rnc2rng.loads(src)))
+        return cls(_parseMemoryDocument(rng_str, parser=None, url=base_url))

.venv/lib/python3.12/site-packages/lxml/sax.cpython-312-x86_64-linux-gnu.so

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:8140b87f112d80cc7c60f13d45e74f80fc955e1a0ec40045226fc6fb67d91523
+size 186296

.venv/lib/python3.12/site-packages/lxml/sax.py

@@ -0,0 +1,285 @@
+"""
+SAX-based adapter to copy trees from/to the Python standard library.
+
+Use the `ElementTreeContentHandler` class to build an ElementTree from
+SAX events.
+
+Use the `ElementTreeProducer` class or the `saxify()` function to fire
+the SAX events of an ElementTree against a SAX ContentHandler.
+
+See https://lxml.de/sax.html
+"""
+
+
+from xml.sax.handler import ContentHandler
+from lxml import etree
+from lxml.etree import ElementTree, SubElement
+from lxml.etree import Comment, ProcessingInstruction
+
+try:
+    from types import GenericAlias as _GenericAlias
+except ImportError:
+    # Python 3.8 - we only need this as return value from "__class_getitem__"
+    def _GenericAlias(cls, item):
+        return f"{cls.__name__}[{item.__name__}]"
+
+
+class SaxError(etree.LxmlError):
+    """General SAX error.
+    """
+
+
+def _getNsTag(tag):
+    if tag[0] == '{' and '}' in tag:
+        return tuple(tag[1:].split('}', 1))
+    else:
+        return None, tag
+
+
+class ElementTreeContentHandler(ContentHandler):
+    """Build an lxml ElementTree from SAX events.
+    """
+    def __init__(self, makeelement=None):
+        ContentHandler.__init__(self)
+        self._root = None
+        self._root_siblings = []
+        self._element_stack = []
+        self._default_ns = None
+        self._ns_mapping = { None : [None] }
+        self._new_mappings = {}
+        if makeelement is None:
+            makeelement = etree.Element
+        self._makeelement = makeelement
+
+    def _get_etree(self):
+        "Contains the generated ElementTree after parsing is finished."
+        return ElementTree(self._root)
+
+    etree = property(_get_etree, doc=_get_etree.__doc__)
+
+    def setDocumentLocator(self, locator):
+        pass
+
+    def startDocument(self):
+        pass
+
+    def endDocument(self):
+        pass
+
+    def startPrefixMapping(self, prefix, uri):
+        self._new_mappings[prefix] = uri
+        try:
+            self._ns_mapping[prefix].append(uri)
+        except KeyError:
+            self._ns_mapping[prefix] = [uri]
+        if prefix is None:
+            self._default_ns = uri
+
+    def endPrefixMapping(self, prefix):
+        ns_uri_list = self._ns_mapping[prefix]
+        ns_uri_list.pop()
+        if prefix is None:
+            self._default_ns = ns_uri_list[-1]
+
+    def _buildTag(self, ns_name_tuple):
+        ns_uri, local_name = ns_name_tuple
+        if ns_uri:
+            el_tag = "{%s}%s" % ns_name_tuple
+        elif self._default_ns:
+            el_tag = "{%s}%s" % (self._default_ns, local_name)
+        else:
+            el_tag = local_name
+        return el_tag
+
+    def startElementNS(self, ns_name, qname, attributes=None):
+        el_name = self._buildTag(ns_name)
+        if attributes:
+            attrs = {}
+            try:
+                iter_attributes = attributes.iteritems()
+            except AttributeError:
+                iter_attributes = attributes.items()
+
+            for name_tuple, value in iter_attributes:
+                if name_tuple[0]:
+                    attr_name = "{%s}%s" % name_tuple
+                else:
+                    attr_name = name_tuple[1]
+                attrs[attr_name] = value
+        else:
+            attrs = None
+
+        element_stack = self._element_stack
+        if self._root is None:
+            element = self._root = \
+                      self._makeelement(el_name, attrs, self._new_mappings)
+            if self._root_siblings and hasattr(element, 'addprevious'):
+                for sibling in self._root_siblings:
+                    element.addprevious(sibling)
+            del self._root_siblings[:]
+        else:
+            element = SubElement(element_stack[-1], el_name,
+                                 attrs, self._new_mappings)
+        element_stack.append(element)
+
+        self._new_mappings.clear()
+
+    def processingInstruction(self, target, data):
+        pi = ProcessingInstruction(target, data)
+        if self._root is None:
+            self._root_siblings.append(pi)
+        else:
+            self._element_stack[-1].append(pi)
+
+    def endElementNS(self, ns_name, qname):
+        element = self._element_stack.pop()
+        el_tag = self._buildTag(ns_name)
+        if el_tag != element.tag:
+            raise SaxError("Unexpected element closed: " + el_tag)
+
+    def startElement(self, name, attributes=None):
+        if attributes:
+            attributes = {(None, k): v for k, v in attributes.items()}
+        self.startElementNS((None, name), name, attributes)
+
+    def endElement(self, name):
+        self.endElementNS((None, name), name)
+
+    def characters(self, data):
+        last_element = self._element_stack[-1]
+        try:
+            # if there already is a child element, we must append to its tail
+            last_element = last_element[-1]
+        except IndexError:
+            # otherwise: append to the text
+            last_element.text = (last_element.text or '') + data
+        else:
+            last_element.tail = (last_element.tail or '') + data
+
+    ignorableWhitespace = characters
+
+    # Allow subscripting sax.ElementTreeContentHandler in type annotations (PEP 560)
+    def __class_getitem__(cls, item):
+        return _GenericAlias(cls, item)
+
+
+class ElementTreeProducer:
+    """Produces SAX events for an element and children.
+    """
+    def __init__(self, element_or_tree, content_handler):
+        try:
+            element = element_or_tree.getroot()
+        except AttributeError:
+            element = element_or_tree
+        self._element = element
+        self._content_handler = content_handler
+        from xml.sax.xmlreader import AttributesNSImpl as attr_class
+        self._attr_class = attr_class
+        self._empty_attributes = attr_class({}, {})
+
+    def saxify(self):
+        self._content_handler.startDocument()
+
+        element = self._element
+        if hasattr(element, 'getprevious'):
+            siblings = []
+            sibling = element.getprevious()
+            while getattr(sibling, 'tag', None) is ProcessingInstruction:
+                siblings.append(sibling)
+                sibling = sibling.getprevious()
+            for sibling in siblings[::-1]:
+                self._recursive_saxify(sibling, {})
+
+        self._recursive_saxify(element, {})
+
+        if hasattr(element, 'getnext'):
+            sibling = element.getnext()
+            while getattr(sibling, 'tag', None) is ProcessingInstruction:
+                self._recursive_saxify(sibling, {})
+                sibling = sibling.getnext()
+
+        self._content_handler.endDocument()
+
+    def _recursive_saxify(self, element, parent_nsmap):
+        content_handler = self._content_handler
+        tag = element.tag
+        if tag is Comment or tag is ProcessingInstruction:
+            if tag is ProcessingInstruction:
+                content_handler.processingInstruction(
+                    element.target, element.text)
+            tail = element.tail
+            if tail:
+                content_handler.characters(tail)
+            return
+
+        element_nsmap = element.nsmap
+        new_prefixes = []
+        if element_nsmap != parent_nsmap:
+            # There have been updates to the namespace
+            for prefix, ns_uri in element_nsmap.items():
+                if parent_nsmap.get(prefix) != ns_uri:
+                    new_prefixes.append( (prefix, ns_uri) )
+
+        attribs = element.items()
+        if attribs:
+            attr_values = {}
+            attr_qnames = {}
+            for attr_ns_name, value in attribs:
+                attr_ns_tuple = _getNsTag(attr_ns_name)
+                attr_values[attr_ns_tuple] = value
+                attr_qnames[attr_ns_tuple] = self._build_qname(
+                    attr_ns_tuple[0], attr_ns_tuple[1], element_nsmap,
+                    preferred_prefix=None, is_attribute=True)
+            sax_attributes = self._attr_class(attr_values, attr_qnames)
+        else:
+            sax_attributes = self._empty_attributes
+
+        ns_uri, local_name = _getNsTag(tag)
+        qname = self._build_qname(
+            ns_uri, local_name, element_nsmap, element.prefix, is_attribute=False)
+
+        for prefix, uri in new_prefixes:
+            content_handler.startPrefixMapping(prefix, uri)
+        content_handler.startElementNS(
+            (ns_uri, local_name), qname, sax_attributes)
+        text = element.text
+        if text:
+            content_handler.characters(text)
+        for child in element:
+            self._recursive_saxify(child, element_nsmap)
+        content_handler.endElementNS((ns_uri, local_name), qname)
+        for prefix, uri in new_prefixes:
+            content_handler.endPrefixMapping(prefix)
+        tail = element.tail
+        if tail:
+            content_handler.characters(tail)
+
+    def _build_qname(self, ns_uri, local_name, nsmap, preferred_prefix, is_attribute):
+        if ns_uri is None:
+            return local_name
+
+        if not is_attribute and nsmap.get(preferred_prefix) == ns_uri:
+            prefix = preferred_prefix
+        else:
+            # Pick the first matching prefix, in alphabetical order.
+            candidates = [
+                pfx for (pfx, uri) in nsmap.items()
+                if pfx is not None and uri == ns_uri
+            ]
+            prefix = (
+                candidates[0] if len(candidates) == 1
+                else min(candidates) if candidates
+                else None
+            )
+
+        if prefix is None:
+            # Default namespace
+            return local_name
+        return prefix + ':' + local_name
+
+
+def saxify(element_or_tree, content_handler):
+    """One-shot helper to generate SAX events from an XML tree and fire
+    them against a SAX ContentHandler.
+    """
+    return ElementTreeProducer(element_or_tree, content_handler).saxify()

.venv/lib/python3.12/site-packages/lxml/saxparser.pxi

@@ -0,0 +1,875 @@
+# SAX-like interfaces
+
+class XMLSyntaxAssertionError(XMLSyntaxError, AssertionError):
+    """
+    An XMLSyntaxError that additionally inherits from AssertionError for
+    ElementTree / backwards compatibility reasons.
+
+    This class may get replaced by a plain XMLSyntaxError in a future version.
+    """
+    def __init__(self, message):
+        XMLSyntaxError.__init__(self, message, None, 0, 1)
+
+
+ctypedef enum _SaxParserEvents:
+    SAX_EVENT_START    = 1 << 0
+    SAX_EVENT_END      = 1 << 1
+    SAX_EVENT_DATA     = 1 << 2
+    SAX_EVENT_DOCTYPE  = 1 << 3
+    SAX_EVENT_PI       = 1 << 4
+    SAX_EVENT_COMMENT  = 1 << 5
+    SAX_EVENT_START_NS = 1 << 6
+    SAX_EVENT_END_NS   = 1 << 7
+
+ctypedef enum _ParseEventFilter:
+    PARSE_EVENT_FILTER_START     = 1 << 0
+    PARSE_EVENT_FILTER_END       = 1 << 1
+    PARSE_EVENT_FILTER_START_NS  = 1 << 2
+    PARSE_EVENT_FILTER_END_NS    = 1 << 3
+    PARSE_EVENT_FILTER_COMMENT   = 1 << 4
+    PARSE_EVENT_FILTER_PI        = 1 << 5
+
+
+cdef int _buildParseEventFilter(events) except -1:
+    cdef int event_filter = 0
+    for event in events:
+        if event == 'start':
+            event_filter |= PARSE_EVENT_FILTER_START
+        elif event == 'end':
+            event_filter |= PARSE_EVENT_FILTER_END
+        elif event == 'start-ns':
+            event_filter |= PARSE_EVENT_FILTER_START_NS
+        elif event == 'end-ns':
+            event_filter |= PARSE_EVENT_FILTER_END_NS
+        elif event == 'comment':
+            event_filter |= PARSE_EVENT_FILTER_COMMENT
+        elif event == 'pi':
+            event_filter |= PARSE_EVENT_FILTER_PI
+        else:
+            raise ValueError, f"invalid event name '{event}'"
+    return event_filter
+
+
+cdef class _SaxParserTarget:
+    cdef int _sax_event_filter
+
+    cdef _handleSaxStart(self, tag, attrib, nsmap):
+        return None
+    cdef _handleSaxEnd(self, tag):
+        return None
+    cdef int _handleSaxData(self, data) except -1:
+        return 0
+    cdef int _handleSaxDoctype(self, root_tag, public_id, system_id) except -1:
+        return 0
+    cdef _handleSaxPi(self, target, data):
+        return None
+    cdef _handleSaxComment(self, comment):
+        return None
+    cdef _handleSaxStartNs(self, prefix, uri):
+        return None
+    cdef _handleSaxEndNs(self, prefix):
+        return None
+
+
+#@cython.final
+@cython.internal
+@cython.no_gc_clear  # Required because parent class uses it - Cython bug.
+cdef class _SaxParserContext(_ParserContext):
+    """This class maps SAX2 events to parser target events.
+    """
+    cdef _SaxParserTarget _target
+    cdef _BaseParser _parser
+    cdef xmlparser.startElementNsSAX2Func _origSaxStart
+    cdef xmlparser.endElementNsSAX2Func   _origSaxEnd
+    cdef xmlparser.startElementSAXFunc    _origSaxStartNoNs
+    cdef xmlparser.endElementSAXFunc      _origSaxEndNoNs
+    cdef xmlparser.charactersSAXFunc      _origSaxData
+    cdef xmlparser.cdataBlockSAXFunc      _origSaxCData
+    cdef xmlparser.internalSubsetSAXFunc  _origSaxDoctype
+    cdef xmlparser.commentSAXFunc         _origSaxComment
+    cdef xmlparser.processingInstructionSAXFunc _origSaxPI
+    cdef xmlparser.startDocumentSAXFunc   _origSaxStartDocument
+
+    # for event collecting
+    cdef int _event_filter
+    cdef list _ns_stack
+    cdef list _node_stack
+    cdef _ParseEventsIterator events_iterator
+
+    # for iterparse
+    cdef _Element  _root
+    cdef _MultiTagMatcher _matcher
+
+    def __cinit__(self, _BaseParser parser):
+        self._ns_stack = []
+        self._node_stack = []
+        self._parser = parser
+        self.events_iterator = _ParseEventsIterator()
+
+    cdef void _setSaxParserTarget(self, _SaxParserTarget target) noexcept:
+        self._target = target
+
+    cdef void _initParserContext(self, xmlparser.xmlParserCtxt* c_ctxt) noexcept:
+        _ParserContext._initParserContext(self, c_ctxt)
+        if self._target is not None:
+            self._connectTarget(c_ctxt)
+        elif self._event_filter:
+            self._connectEvents(c_ctxt)
+
+    cdef void _connectTarget(self, xmlparser.xmlParserCtxt* c_ctxt) noexcept:
+        """Wrap original SAX2 callbacks to call into parser target.
+        """
+        sax = c_ctxt.sax
+        self._origSaxStart = sax.startElementNs = NULL
+        self._origSaxStartNoNs = sax.startElement = NULL
+        if self._target._sax_event_filter & (SAX_EVENT_START |
+                                             SAX_EVENT_START_NS |
+                                             SAX_EVENT_END_NS):
+            # intercept => overwrite orig callback
+            # FIXME: also intercept on when collecting END events
+            if sax.initialized == xmlparser.XML_SAX2_MAGIC:
+                sax.startElementNs = _handleSaxTargetStart
+            if self._target._sax_event_filter & SAX_EVENT_START:
+                sax.startElement = _handleSaxTargetStartNoNs
+
+        self._origSaxEnd = sax.endElementNs = NULL
+        self._origSaxEndNoNs = sax.endElement = NULL
+        if self._target._sax_event_filter & (SAX_EVENT_END |
+                                             SAX_EVENT_END_NS):
+            if sax.initialized == xmlparser.XML_SAX2_MAGIC:
+                sax.endElementNs = _handleSaxEnd
+            if self._target._sax_event_filter & SAX_EVENT_END:
+                sax.endElement = _handleSaxEndNoNs
+
+        self._origSaxData = sax.characters = sax.cdataBlock = NULL
+        if self._target._sax_event_filter & SAX_EVENT_DATA:
+            sax.characters = sax.cdataBlock = _handleSaxData
+
+        # doctype propagation is always required for entity replacement
+        self._origSaxDoctype = sax.internalSubset
+        if self._target._sax_event_filter & SAX_EVENT_DOCTYPE:
+            sax.internalSubset = _handleSaxTargetDoctype
+
+        self._origSaxPI = sax.processingInstruction = NULL
+        if self._target._sax_event_filter & SAX_EVENT_PI:
+            sax.processingInstruction = _handleSaxTargetPI
+
+        self._origSaxComment = sax.comment = NULL
+        if self._target._sax_event_filter & SAX_EVENT_COMMENT:
+            sax.comment = _handleSaxTargetComment
+
+        # enforce entity replacement
+        sax.reference = NULL
+        c_ctxt.replaceEntities = 1
+
+    cdef void _connectEvents(self, xmlparser.xmlParserCtxt* c_ctxt) noexcept:
+        """Wrap original SAX2 callbacks to collect parse events without parser target.
+        """
+        sax = c_ctxt.sax
+        self._origSaxStartDocument = sax.startDocument
+        sax.startDocument = _handleSaxStartDocument
+
+        # only override "start" event handler if needed
+        self._origSaxStart = sax.startElementNs
+        if self._event_filter == 0 or c_ctxt.html or \
+               self._event_filter & (PARSE_EVENT_FILTER_START |
+                                     PARSE_EVENT_FILTER_END |
+                                     PARSE_EVENT_FILTER_START_NS |
+                                     PARSE_EVENT_FILTER_END_NS):
+            sax.startElementNs = <xmlparser.startElementNsSAX2Func>_handleSaxStart
+
+        self._origSaxStartNoNs = sax.startElement
+        if self._event_filter == 0 or c_ctxt.html or \
+               self._event_filter & (PARSE_EVENT_FILTER_START |
+                                     PARSE_EVENT_FILTER_END):
+            sax.startElement = <xmlparser.startElementSAXFunc>_handleSaxStartNoNs
+
+        # only override "end" event handler if needed
+        self._origSaxEnd = sax.endElementNs
+        if self._event_filter == 0 or \
+               self._event_filter & (PARSE_EVENT_FILTER_END |
+                                     PARSE_EVENT_FILTER_END_NS):
+            sax.endElementNs = <xmlparser.endElementNsSAX2Func>_handleSaxEnd
+
+        self._origSaxEndNoNs = sax.endElement
+        if self._event_filter == 0 or \
+               self._event_filter & PARSE_EVENT_FILTER_END:
+            sax.endElement = <xmlparser.endElementSAXFunc>_handleSaxEndNoNs
+
+        self._origSaxComment = sax.comment
+        if self._event_filter & PARSE_EVENT_FILTER_COMMENT:
+            sax.comment = <xmlparser.commentSAXFunc>_handleSaxComment
+
+        self._origSaxPI = sax.processingInstruction
+        if self._event_filter & PARSE_EVENT_FILTER_PI:
+            sax.processingInstruction = <xmlparser.processingInstructionSAXFunc>_handleSaxPIEvent
+
+    cdef _setEventFilter(self, events, tag):
+        self._event_filter = _buildParseEventFilter(events)
+        if not self._event_filter or tag is None or tag == '*':
+            self._matcher = None
+        else:
+            self._matcher = _MultiTagMatcher.__new__(_MultiTagMatcher, tag)
+
+    cdef int startDocument(self, xmlDoc* c_doc) except -1:
+        try:
+            self._doc = _documentFactory(c_doc, self._parser)
+        finally:
+            self._parser = None  # clear circular reference ASAP
+        if self._matcher is not None:
+            self._matcher.cacheTags(self._doc, force_into_dict=True)
+        return 0
+
+    cdef int pushEvent(self, event, xmlNode* c_node) except -1:
+        cdef _Element root
+        if self._root is None:
+            root = self._doc.getroot()
+            if root is not None and root._c_node.type == tree.XML_ELEMENT_NODE:
+                self._root = root
+        node = _elementFactory(self._doc, c_node)
+        self.events_iterator._events.append( (event, node) )
+        return 0
+
+    cdef int flushEvents(self) except -1:
+        events = self.events_iterator._events
+        while self._node_stack:
+            events.append( ('end', self._node_stack.pop()) )
+            _pushSaxNsEndEvents(self)
+        while self._ns_stack:
+            _pushSaxNsEndEvents(self)
+
+    cdef void _handleSaxException(self, xmlparser.xmlParserCtxt* c_ctxt) noexcept:
+        if c_ctxt.errNo == xmlerror.XML_ERR_OK:
+            c_ctxt.errNo = xmlerror.XML_ERR_INTERNAL_ERROR
+        # stop parsing immediately
+        c_ctxt.wellFormed = 0
+        c_ctxt.disableSAX = 1
+        c_ctxt.instate = xmlparser.XML_PARSER_EOF
+        self._store_raised()
+
+
+@cython.final
+@cython.internal
+cdef class _ParseEventsIterator:
+    """A reusable parse events iterator"""
+    cdef list _events
+    cdef int _event_index
+
+    def __cinit__(self):
+        self._events = []
+        self._event_index = 0
+
+    def __iter__(self):
+        return self
+
+    def __next__(self):
+        cdef int event_index = self._event_index
+        events = self._events
+        if event_index >= 2**10 or event_index * 2 >= len(events):
+            if event_index:
+                # clean up from time to time
+                del events[:event_index]
+                self._event_index = event_index = 0
+            if event_index >= len(events):
+                raise StopIteration
+        item = events[event_index]
+        self._event_index = event_index + 1
+        return item
+
+
+cdef list _build_prefix_uri_list(_SaxParserContext context, int c_nb_namespaces,
+                                 const_xmlChar** c_namespaces):
+    "Build [(prefix, uri)] list of declared namespaces."
+    cdef int i
+    namespaces = []
+    for i in xrange(c_nb_namespaces):
+        namespaces.append((funicodeOrEmpty(c_namespaces[0]), funicode(c_namespaces[1])))
+        c_namespaces += 2
+    return namespaces
+
+
+cdef void _handleSaxStart(
+        void* ctxt, const_xmlChar* c_localname, const_xmlChar* c_prefix,
+        const_xmlChar* c_namespace, int c_nb_namespaces,
+        const_xmlChar** c_namespaces,
+        int c_nb_attributes, int c_nb_defaulted,
+        const_xmlChar** c_attributes) noexcept with gil:
+    cdef int i
+    cdef size_t c_len
+    c_ctxt = <xmlparser.xmlParserCtxt*>ctxt
+    if c_ctxt._private is NULL or xmlparser.xmlCtxtIsStopped(c_ctxt):
+        return
+    context = <_SaxParserContext>c_ctxt._private
+    cdef int event_filter = context._event_filter
+    try:
+        if (c_nb_namespaces and
+                event_filter & (PARSE_EVENT_FILTER_START_NS |
+                                PARSE_EVENT_FILTER_END_NS)):
+            declared_namespaces = _build_prefix_uri_list(
+                context, c_nb_namespaces, c_namespaces)
+            if event_filter & PARSE_EVENT_FILTER_START_NS:
+                for prefix_uri_tuple in declared_namespaces:
+                    context.events_iterator._events.append(("start-ns", prefix_uri_tuple))
+        else:
+            declared_namespaces = None
+
+        context._origSaxStart(c_ctxt, c_localname, c_prefix, c_namespace,
+                              c_nb_namespaces, c_namespaces, c_nb_attributes,
+                              c_nb_defaulted, c_attributes)
+        if c_ctxt.html:
+            _fixHtmlDictNodeNames(c_ctxt.dict, c_ctxt.node)
+            # The HTML parser in libxml2 reports the missing opening tags when it finds
+            # misplaced ones, but with tag names from C string constants that ignore the
+            # parser dict.  Thus, we need to intern the name ourselves.
+            c_localname = tree.xmlDictLookup(c_ctxt.dict, c_localname, -1)
+            if c_localname is NULL:
+                raise MemoryError()
+
+        if event_filter & PARSE_EVENT_FILTER_END_NS:
+            context._ns_stack.append(declared_namespaces)
+        if event_filter & (PARSE_EVENT_FILTER_END |
+                           PARSE_EVENT_FILTER_START):
+            _pushSaxStartEvent(context, c_ctxt, c_namespace, c_localname, None)
+    except:
+        context._handleSaxException(c_ctxt)
+    finally:
+        return  # swallow any further exceptions
+
+
+cdef void _handleSaxTargetStart(
+        void* ctxt, const_xmlChar* c_localname, const_xmlChar* c_prefix,
+        const_xmlChar* c_namespace, int c_nb_namespaces,
+        const_xmlChar** c_namespaces,
+        int c_nb_attributes, int c_nb_defaulted,
+        const_xmlChar** c_attributes) noexcept with gil:
+    cdef int i
+    cdef size_t c_len
+    c_ctxt = <xmlparser.xmlParserCtxt*>ctxt
+    if c_ctxt._private is NULL or xmlparser.xmlCtxtIsStopped(c_ctxt):
+        return
+    context = <_SaxParserContext>c_ctxt._private
+
+    cdef int event_filter = context._event_filter
+    cdef int sax_event_filter = context._target._sax_event_filter
+    try:
+        if c_nb_namespaces:
+            declared_namespaces = _build_prefix_uri_list(
+                context, c_nb_namespaces, c_namespaces)
+
+            if event_filter & PARSE_EVENT_FILTER_START_NS:
+                for prefix_uri_tuple in declared_namespaces:
+                    context.events_iterator._events.append(("start-ns", prefix_uri_tuple))
+
+            if sax_event_filter & SAX_EVENT_START_NS:
+                for prefix, uri in declared_namespaces:
+                    context._target._handleSaxStartNs(prefix, uri)
+        else:
+            declared_namespaces = None
+
+        if sax_event_filter & SAX_EVENT_START:
+            if c_nb_defaulted > 0:
+                # only add default attributes if we asked for them
+                if c_ctxt.loadsubset & xmlparser.XML_COMPLETE_ATTRS == 0:
+                    c_nb_attributes -= c_nb_defaulted
+            if c_nb_attributes == 0:
+                attrib = IMMUTABLE_EMPTY_MAPPING
+            else:
+                attrib = {}
+                for i in xrange(c_nb_attributes):
+                    name = _namespacedNameFromNsName(
+                        c_attributes[2], c_attributes[0])
+                    if c_attributes[3] is NULL:
+                        value = ''
+                    else:
+                        c_len = c_attributes[4] - c_attributes[3]
+                        value = c_attributes[3][:c_len].decode('utf8')
+                    attrib[name] = value
+                    c_attributes += 5
+
+            nsmap = dict(declared_namespaces) if c_nb_namespaces else IMMUTABLE_EMPTY_MAPPING
+
+            element = _callTargetSaxStart(
+                context, c_ctxt,
+                _namespacedNameFromNsName(c_namespace, c_localname),
+                attrib, nsmap)
+        else:
+            element = None
+
+        if (event_filter & PARSE_EVENT_FILTER_END_NS or
+                sax_event_filter & SAX_EVENT_END_NS):
+            context._ns_stack.append(declared_namespaces)
+        if event_filter & (PARSE_EVENT_FILTER_END |
+                           PARSE_EVENT_FILTER_START):
+            _pushSaxStartEvent(context, c_ctxt, c_namespace,
+                               c_localname, element)
+    except:
+        context._handleSaxException(c_ctxt)
+    finally:
+        return  # swallow any further exceptions
+
+
+cdef void _handleSaxStartNoNs(void* ctxt, const_xmlChar* c_name,
+                              const_xmlChar** c_attributes) noexcept with gil:
+    c_ctxt = <xmlparser.xmlParserCtxt*>ctxt
+    if c_ctxt._private is NULL or xmlparser.xmlCtxtIsStopped(c_ctxt):
+        return
+    context = <_SaxParserContext>c_ctxt._private
+    try:
+        context._origSaxStartNoNs(c_ctxt, c_name, c_attributes)
+        if c_ctxt.html:
+            _fixHtmlDictNodeNames(c_ctxt.dict, c_ctxt.node)
+            # The HTML parser in libxml2 reports the missing opening tags when it finds
+            # misplaced ones, but with tag names from C string constants that ignore the
+            # parser dict.  Thus, we need to intern the name ourselves.
+            c_name = tree.xmlDictLookup(c_ctxt.dict, c_name, -1)
+            if c_name is NULL:
+                raise MemoryError()
+        if context._event_filter & (PARSE_EVENT_FILTER_END |
+                                    PARSE_EVENT_FILTER_START):
+            _pushSaxStartEvent(context, c_ctxt, NULL, c_name, None)
+    except:
+        context._handleSaxException(c_ctxt)
+    finally:
+        return  # swallow any further exceptions
+
+
+cdef void _handleSaxTargetStartNoNs(void* ctxt, const_xmlChar* c_name,
+                                    const_xmlChar** c_attributes) noexcept with gil:
+    c_ctxt = <xmlparser.xmlParserCtxt*>ctxt
+    if c_ctxt._private is NULL or xmlparser.xmlCtxtIsStopped(c_ctxt):
+        return
+    context = <_SaxParserContext>c_ctxt._private
+    try:
+        if c_attributes is NULL:
+            attrib = IMMUTABLE_EMPTY_MAPPING
+        else:
+            attrib = {}
+            while c_attributes[0] is not NULL:
+                name = funicode(c_attributes[0])
+                attrib[name] = funicodeOrEmpty(c_attributes[1])
+                c_attributes += 2
+        element = _callTargetSaxStart(
+            context, c_ctxt, funicode(c_name),
+            attrib, IMMUTABLE_EMPTY_MAPPING)
+        if context._event_filter & (PARSE_EVENT_FILTER_END |
+                                    PARSE_EVENT_FILTER_START):
+            _pushSaxStartEvent(context, c_ctxt, NULL, c_name, element)
+    except:
+        context._handleSaxException(c_ctxt)
+    finally:
+        return  # swallow any further exceptions
+
+
+cdef _callTargetSaxStart(_SaxParserContext context,
+                         xmlparser.xmlParserCtxt* c_ctxt,
+                         tag, attrib, nsmap):
+    element = context._target._handleSaxStart(tag, attrib, nsmap)
+    if element is not None and c_ctxt.input is not NULL:
+        if isinstance(element, _Element):
+            (<_Element>element)._c_node.line = (
+                <unsigned short>c_ctxt.input.line
+                if c_ctxt.input.line < 65535 else 65535)
+    return element
+
+
+cdef int _pushSaxStartEvent(_SaxParserContext context,
+                            xmlparser.xmlParserCtxt* c_ctxt,
+                            const_xmlChar* c_href,
+                            const_xmlChar* c_name, node) except -1:
+    if (context._matcher is None or
+            context._matcher.matchesNsTag(c_href, c_name)):
+        if node is None and context._target is None:
+            assert context._doc is not None
+            node = _elementFactory(context._doc, c_ctxt.node)
+        if context._event_filter & PARSE_EVENT_FILTER_START:
+            context.events_iterator._events.append(('start', node))
+        if (context._target is None and
+                context._event_filter & PARSE_EVENT_FILTER_END):
+            context._node_stack.append(node)
+    return 0
+
+
+cdef void _handleSaxEnd(void* ctxt, const_xmlChar* c_localname,
+                        const_xmlChar* c_prefix,
+                        const_xmlChar* c_namespace) noexcept with gil:
+    c_ctxt = <xmlparser.xmlParserCtxt*>ctxt
+    if c_ctxt._private is NULL or xmlparser.xmlCtxtIsStopped(c_ctxt):
+        return
+    context = <_SaxParserContext>c_ctxt._private
+    try:
+        if context._target is not None:
+            if context._target._sax_event_filter & SAX_EVENT_END:
+                node = context._target._handleSaxEnd(
+                    _namespacedNameFromNsName(c_namespace, c_localname))
+            else:
+                node = None
+        else:
+            context._origSaxEnd(c_ctxt, c_localname, c_prefix, c_namespace)
+            node = None
+        _pushSaxEndEvent(context, c_namespace, c_localname, node)
+        _pushSaxNsEndEvents(context)
+    except:
+        context._handleSaxException(c_ctxt)
+    finally:
+        return  # swallow any further exceptions
+
+
+cdef void _handleSaxEndNoNs(void* ctxt, const_xmlChar* c_name) noexcept with gil:
+    c_ctxt = <xmlparser.xmlParserCtxt*>ctxt
+    if c_ctxt._private is NULL or xmlparser.xmlCtxtIsStopped(c_ctxt):
+        return
+    context = <_SaxParserContext>c_ctxt._private
+    try:
+        if context._target is not None:
+            node = context._target._handleSaxEnd(funicode(c_name))
+        else:
+            context._origSaxEndNoNs(c_ctxt, c_name)
+            node = None
+        _pushSaxEndEvent(context, NULL, c_name, node)
+    except:
+        context._handleSaxException(c_ctxt)
+    finally:
+        return  # swallow any further exceptions
+
+
+cdef int _pushSaxNsEndEvents(_SaxParserContext context) except -1:
+    cdef bint build_events = context._event_filter & PARSE_EVENT_FILTER_END_NS
+    cdef bint call_target = (
+        context._target is not None
+        and context._target._sax_event_filter & SAX_EVENT_END_NS)
+    if not build_events and not call_target:
+        return 0
+
+    cdef list declared_namespaces = context._ns_stack.pop()
+    if declared_namespaces is None:
+        return 0
+
+    cdef tuple prefix_uri
+    for prefix_uri in reversed(declared_namespaces):
+        if call_target:
+            context._target._handleSaxEndNs(prefix_uri[0])
+        if build_events:
+            context.events_iterator._events.append(('end-ns', None))
+
+    return 0
+
+
+cdef int _pushSaxEndEvent(_SaxParserContext context,
+                          const_xmlChar* c_href,
+                          const_xmlChar* c_name, node) except -1:
+    if context._event_filter & PARSE_EVENT_FILTER_END:
+        if (context._matcher is None or
+                context._matcher.matchesNsTag(c_href, c_name)):
+            if context._target is None:
+                node = context._node_stack.pop()
+            context.events_iterator._events.append(('end', node))
+    return 0
+
+
+cdef void _handleSaxData(void* ctxt, const_xmlChar* c_data, int data_len) noexcept with gil:
+    # can only be called if parsing with a target
+    c_ctxt = <xmlparser.xmlParserCtxt*>ctxt
+    if c_ctxt._private is NULL or xmlparser.xmlCtxtIsStopped(c_ctxt):
+        return
+    context = <_SaxParserContext>c_ctxt._private
+    try:
+        context._target._handleSaxData(
+            c_data[:data_len].decode('utf8'))
+    except:
+        context._handleSaxException(c_ctxt)
+    finally:
+        return  # swallow any further exceptions
+
+
+cdef void _handleSaxTargetDoctype(void* ctxt, const_xmlChar* c_name,
+                                  const_xmlChar* c_public,
+                                  const_xmlChar* c_system) noexcept with gil:
+    # can only be called if parsing with a target
+    c_ctxt = <xmlparser.xmlParserCtxt*>ctxt
+    if c_ctxt._private is NULL or xmlparser.xmlCtxtIsStopped(c_ctxt):
+        return
+    context = <_SaxParserContext>c_ctxt._private
+    try:
+        context._target._handleSaxDoctype(
+            funicodeOrNone(c_name),
+            funicodeOrNone(c_public),
+            funicodeOrNone(c_system))
+    except:
+        context._handleSaxException(c_ctxt)
+    finally:
+        return  # swallow any further exceptions
+
+
+cdef void _handleSaxStartDocument(void* ctxt) noexcept with gil:
+    c_ctxt = <xmlparser.xmlParserCtxt*>ctxt
+    if c_ctxt._private is NULL or xmlparser.xmlCtxtIsStopped(c_ctxt):
+        return
+    context = <_SaxParserContext>c_ctxt._private
+    context._origSaxStartDocument(ctxt)
+    c_doc = c_ctxt.myDoc
+    try:
+        context.startDocument(c_doc)
+    except:
+        context._handleSaxException(c_ctxt)
+    finally:
+        return  # swallow any further exceptions
+
+
+cdef void _handleSaxTargetPI(void* ctxt, const_xmlChar* c_target,
+                             const_xmlChar* c_data) noexcept with gil:
+    # can only be called if parsing with a target
+    c_ctxt = <xmlparser.xmlParserCtxt*>ctxt
+    if c_ctxt._private is NULL or xmlparser.xmlCtxtIsStopped(c_ctxt):
+        return
+    context = <_SaxParserContext>c_ctxt._private
+    try:
+        pi = context._target._handleSaxPi(
+            funicodeOrNone(c_target),
+            funicodeOrEmpty(c_data))
+        if context._event_filter & PARSE_EVENT_FILTER_PI:
+            context.events_iterator._events.append(('pi', pi))
+    except:
+        context._handleSaxException(c_ctxt)
+    finally:
+        return  # swallow any further exceptions
+
+
+cdef void _handleSaxPIEvent(void* ctxt, const_xmlChar* target,
+                            const_xmlChar* data) noexcept with gil:
+    # can only be called when collecting pi events
+    c_ctxt = <xmlparser.xmlParserCtxt*>ctxt
+    if c_ctxt._private is NULL or xmlparser.xmlCtxtIsStopped(c_ctxt):
+        return
+    context = <_SaxParserContext>c_ctxt._private
+    context._origSaxPI(ctxt, target, data)
+    c_node = _findLastEventNode(c_ctxt)
+    if c_node is NULL:
+        return
+    try:
+        context.pushEvent('pi', c_node)
+    except:
+        context._handleSaxException(c_ctxt)
+    finally:
+        return  # swallow any further exceptions
+
+
+cdef void _handleSaxTargetComment(void* ctxt, const_xmlChar* c_data) noexcept with gil:
+    # can only be called if parsing with a target
+    c_ctxt = <xmlparser.xmlParserCtxt*>ctxt
+    if c_ctxt._private is NULL or xmlparser.xmlCtxtIsStopped(c_ctxt):
+        return
+    context = <_SaxParserContext>c_ctxt._private
+    try:
+        comment = context._target._handleSaxComment(funicodeOrEmpty(c_data))
+        if context._event_filter & PARSE_EVENT_FILTER_COMMENT:
+            context.events_iterator._events.append(('comment', comment))
+    except:
+        context._handleSaxException(c_ctxt)
+    finally:
+        return  # swallow any further exceptions
+
+
+cdef void _handleSaxComment(void* ctxt, const_xmlChar* text) noexcept with gil:
+    # can only be called when collecting comment events
+    c_ctxt = <xmlparser.xmlParserCtxt*>ctxt
+    if c_ctxt._private is NULL or xmlparser.xmlCtxtIsStopped(c_ctxt):
+        return
+    context = <_SaxParserContext>c_ctxt._private
+    context._origSaxComment(ctxt, text)
+    c_node = _findLastEventNode(c_ctxt)
+    if c_node is NULL:
+        return
+    try:
+        context.pushEvent('comment', c_node)
+    except:
+        context._handleSaxException(c_ctxt)
+    finally:
+        return  # swallow any further exceptions
+
+
+cdef inline xmlNode* _findLastEventNode(xmlparser.xmlParserCtxt* c_ctxt) noexcept:
+    # this mimics what libxml2 creates for comments/PIs
+    if c_ctxt.inSubset == 1:
+        return c_ctxt.myDoc.intSubset.last
+    elif c_ctxt.inSubset == 2:
+        return c_ctxt.myDoc.extSubset.last
+    elif c_ctxt.node is NULL:
+        return c_ctxt.myDoc.last
+    elif c_ctxt.node.type == tree.XML_ELEMENT_NODE:
+        return c_ctxt.node.last
+    else:
+        return c_ctxt.node.next
+
+
+############################################################
+## ET compatible XML tree builder
+############################################################
+
+cdef class TreeBuilder(_SaxParserTarget):
+    """TreeBuilder(self, element_factory=None, parser=None,
+                    comment_factory=None, pi_factory=None,
+                    insert_comments=True, insert_pis=True)
+
+    Parser target that builds a tree from parse event callbacks.
+
+    The factory arguments can be used to influence the creation of
+    elements, comments and processing instructions.
+
+    By default, comments and processing instructions are inserted into
+    the tree, but they can be ignored by passing the respective flags.
+
+    The final tree is returned by the ``close()`` method.
+    """
+    cdef _BaseParser _parser
+    cdef object _factory
+    cdef object _comment_factory
+    cdef object _pi_factory
+    cdef list _data
+    cdef list _element_stack
+    cdef object _element_stack_pop
+    cdef _Element _last # may be None
+    cdef bint _in_tail
+    cdef bint _insert_comments
+    cdef bint _insert_pis
+
+    def __init__(self, *, element_factory=None, parser=None,
+                 comment_factory=None, pi_factory=None,
+                 bint insert_comments=True, bint insert_pis=True):
+        self._sax_event_filter = \
+            SAX_EVENT_START | SAX_EVENT_END | SAX_EVENT_DATA | \
+            SAX_EVENT_PI | SAX_EVENT_COMMENT
+        self._data = [] # data collector
+        self._element_stack = [] # element stack
+        self._element_stack_pop = self._element_stack.pop
+        self._last = None # last element
+        self._in_tail = 0 # true if we're after an end tag
+        self._factory = element_factory
+        self._comment_factory = comment_factory if comment_factory is not None else Comment
+        self._pi_factory = pi_factory if pi_factory is not None else ProcessingInstruction
+        self._insert_comments = insert_comments
+        self._insert_pis = insert_pis
+        self._parser = parser
+
+    @cython.final
+    cdef int _flush(self) except -1:
+        if self._data:
+            if self._last is not None:
+                text = "".join(self._data)
+                if self._in_tail:
+                    assert self._last.tail is None, "internal error (tail)"
+                    self._last.tail = text
+                else:
+                    assert self._last.text is None, "internal error (text)"
+                    self._last.text = text
+            del self._data[:]
+        return 0
+
+    # internal SAX event handlers
+
+    @cython.final
+    cdef _handleSaxStart(self, tag, attrib, nsmap):
+        self._flush()
+        if self._factory is not None:
+            self._last = self._factory(tag, attrib)
+            if self._element_stack:
+                _appendChild(self._element_stack[-1], self._last)
+        elif self._element_stack:
+            self._last = _makeSubElement(
+                self._element_stack[-1], tag, None, None, attrib, nsmap, None)
+        else:
+            self._last = _makeElement(
+                tag, NULL, None, self._parser, None, None, attrib, nsmap, None)
+        self._element_stack.append(self._last)
+        self._in_tail = 0
+        return self._last
+
+    @cython.final
+    cdef _handleSaxEnd(self, tag):
+        self._flush()
+        self._last = self._element_stack_pop()
+        self._in_tail = 1
+        return self._last
+
+    @cython.final
+    cdef int _handleSaxData(self, data) except -1:
+        self._data.append(data)
+
+    @cython.final
+    cdef _handleSaxPi(self, target, data):
+        elem = self._pi_factory(target, data)
+        if self._insert_pis:
+            self._flush()
+            self._last = elem
+            if self._element_stack:
+                _appendChild(self._element_stack[-1], self._last)
+            self._in_tail = 1
+        return self._last
+
+    @cython.final
+    cdef _handleSaxComment(self, comment):
+        elem = self._comment_factory(comment)
+        if self._insert_comments:
+            self._flush()
+            self._last = elem
+            if self._element_stack:
+                _appendChild(self._element_stack[-1], self._last)
+            self._in_tail = 1
+        return elem
+
+    # Python level event handlers
+
+    def close(self):
+        """close(self)
+
+        Flushes the builder buffers, and returns the toplevel document
+        element.  Raises XMLSyntaxError on inconsistencies.
+        """
+        if self._element_stack:
+            raise XMLSyntaxAssertionError("missing end tags")
+        # TODO: this does not necessarily seem like an error case.  Why not just return None?
+        if self._last is None:
+            raise XMLSyntaxAssertionError("missing toplevel element")
+        return self._last
+
+    def data(self, data):
+        """data(self, data)
+
+        Adds text to the current element.  The value should be either an
+        8-bit string containing ASCII text, or a Unicode string.
+        """
+        self._handleSaxData(data)
+
+    def start(self, tag, attrs, nsmap=None):
+        """start(self, tag, attrs, nsmap=None)
+
+        Opens a new element.
+        """
+        if nsmap is None:
+            nsmap = IMMUTABLE_EMPTY_MAPPING
+        return self._handleSaxStart(tag, attrs, nsmap)
+
+    def end(self, tag):
+        """end(self, tag)
+
+        Closes the current element.
+        """
+        element = self._handleSaxEnd(tag)
+        assert self._last.tag == tag,\
+            f"end tag mismatch (expected {self._last.tag}, got {tag})"
+        return element
+
+    def pi(self, target, data=None):
+        """pi(self, target, data=None)
+
+        Creates a processing instruction using the factory, appends it
+        (unless disabled) and returns it.
+        """
+        return self._handleSaxPi(target, data)
+
+    def comment(self, comment):
+        """comment(self, comment)
+
+        Creates a comment using the factory, appends it (unless disabled)
+        and returns it.
+        """
+        return self._handleSaxComment(comment)

.venv/lib/python3.12/site-packages/lxml/schematron.pxi

@@ -0,0 +1,173 @@
+# support for Schematron validation
+from lxml.includes cimport schematron
+
+
+cdef class SchematronError(LxmlError):
+    """Base class of all Schematron errors.
+    """
+
+cdef class SchematronParseError(SchematronError):
+    """Error while parsing an XML document as Schematron schema.
+    """
+
+cdef class SchematronValidateError(SchematronError):
+    """Error while validating an XML document with a Schematron schema.
+    """
+
+
+################################################################################
+# Schematron
+
+cdef class Schematron(_Validator):
+    """Schematron(self, etree=None, file=None)
+    A Schematron validator.
+
+    Pass a root Element or an ElementTree to turn it into a validator.
+    Alternatively, pass a filename as keyword argument 'file' to parse from
+    the file system.
+
+    Schematron is a less well known, but very powerful schema language.  The main
+    idea is to use the capabilities of XPath to put restrictions on the structure
+    and the content of XML documents.  Here is a simple example::
+
+      >>> schematron = Schematron(XML('''
+      ... <schema xmlns="http://www.ascc.net/xml/schematron" >
+      ...   <pattern name="id is the only permitted attribute name">
+      ...     <rule context="*">
+      ...       <report test="@*[not(name()='id')]">Attribute
+      ...         <name path="@*[not(name()='id')]"/> is forbidden<name/>
+      ...       </report>
+      ...     </rule>
+      ...   </pattern>
+      ... </schema>
+      ... '''))
+
+      >>> xml = XML('''
+      ... <AAA name="aaa">
+      ...   <BBB id="bbb"/>
+      ...   <CCC color="ccc"/>
+      ... </AAA>
+      ... ''')
+
+      >>> schematron.validate(xml)
+      0
+
+      >>> xml = XML('''
+      ... <AAA id="aaa">
+      ...   <BBB id="bbb"/>
+      ...   <CCC/>
+      ... </AAA>
+      ... ''')
+
+      >>> schematron.validate(xml)
+      1
+
+    Schematron was added to libxml2 in version 2.6.21.  Before version 2.6.32,
+    however, Schematron lacked support for error reporting other than to stderr.
+    This version is therefore required to retrieve validation warnings and
+    errors in lxml.
+    """
+    cdef schematron.xmlSchematron* _c_schema
+    cdef xmlDoc* _c_schema_doc
+
+    def __init__(self, etree=None, *, file=None):
+        cdef _Document doc
+        cdef _Element root_node
+        cdef xmlNode* c_node
+        cdef char* c_href
+        cdef schematron.xmlSchematronParserCtxt* parser_ctxt = NULL
+        _Validator.__init__(self)
+        if not config.ENABLE_SCHEMATRON:
+            raise SchematronError, \
+                "lxml.etree was compiled without Schematron support."
+
+        import warnings
+        warnings.warn(
+            "The (non-ISO) Schematron feature is deprecated and will be removed from libxml2 and lxml. "
+            "Use 'lxml.isoschematron' instead.",
+            DeprecationWarning,
+        )
+
+        if etree is not None:
+            doc = _documentOrRaise(etree)
+            root_node = _rootNodeOrRaise(etree)
+            self._c_schema_doc = _copyDocRoot(doc._c_doc, root_node._c_node)
+            parser_ctxt = schematron.xmlSchematronNewDocParserCtxt(self._c_schema_doc)
+        elif file is not None:
+            filename = _getFilenameForFile(file)
+            if filename is None:
+                # XXX assume a string object
+                filename = file
+            filename = _encodeFilename(filename)
+            with self._error_log:
+                orig_loader = _register_document_loader()
+                parser_ctxt = schematron.xmlSchematronNewParserCtxt(_cstr(filename))
+                _reset_document_loader(orig_loader)
+        else:
+            raise SchematronParseError, "No tree or file given"
+
+        if parser_ctxt is NULL:
+            if self._c_schema_doc is not NULL:
+                tree.xmlFreeDoc(self._c_schema_doc)
+                self._c_schema_doc = NULL
+            raise MemoryError()
+
+        try:
+            with self._error_log:
+                orig_loader = _register_document_loader()
+                self._c_schema = schematron.xmlSchematronParse(parser_ctxt)
+                _reset_document_loader(orig_loader)
+        finally:
+            schematron.xmlSchematronFreeParserCtxt(parser_ctxt)
+
+        if self._c_schema is NULL:
+            raise SchematronParseError(
+                "Document is not a valid Schematron schema",
+                self._error_log)
+
+    def __dealloc__(self):
+        schematron.xmlSchematronFree(self._c_schema)
+        if self._c_schema_doc is not NULL:
+            tree.xmlFreeDoc(self._c_schema_doc)
+
+    def __call__(self, etree):
+        """__call__(self, etree)
+
+        Validate doc using Schematron.
+
+        Returns true if document is valid, false if not."""
+        cdef _Document doc
+        cdef _Element root_node
+        cdef xmlDoc* c_doc
+        cdef schematron.xmlSchematronValidCtxt* valid_ctxt
+        cdef int ret
+
+        assert self._c_schema is not NULL, "Schematron instance not initialised"
+        doc = _documentOrRaise(etree)
+        root_node = _rootNodeOrRaise(etree)
+
+        valid_ctxt = schematron.xmlSchematronNewValidCtxt(
+            self._c_schema, schematron.XML_SCHEMATRON_OUT_ERROR)
+        if valid_ctxt is NULL:
+            raise MemoryError()
+
+        try:
+            self._error_log.clear()
+            # Need a cast here because older libxml2 releases do not use 'const' in the functype.
+            schematron.xmlSchematronSetValidStructuredErrors(
+                valid_ctxt, <xmlerror.xmlStructuredErrorFunc> _receiveError, <void*>self._error_log)
+            c_doc = _fakeRootDoc(doc._c_doc, root_node._c_node)
+            with nogil:
+                ret = schematron.xmlSchematronValidateDoc(valid_ctxt, c_doc)
+            _destroyFakeDoc(doc._c_doc, c_doc)
+        finally:
+            schematron.xmlSchematronFreeValidCtxt(valid_ctxt)
+
+        if ret == -1:
+            raise SchematronValidateError(
+                "Internal error in Schematron validation",
+                self._error_log)
+        if ret == 0:
+            return True
+        else:
+            return False

.venv/lib/python3.12/site-packages/lxml/serializer.pxi

@@ -0,0 +1,1849 @@
+# XML serialization and output functions
+
+cdef object GzipFile
+from gzip import GzipFile
+
+
+cdef class SerialisationError(LxmlError):
+    """A libxml2 error that occurred during serialisation.
+    """
+
+
+cdef enum _OutputMethods:
+    OUTPUT_METHOD_XML
+    OUTPUT_METHOD_HTML
+    OUTPUT_METHOD_TEXT
+
+
+cdef int _findOutputMethod(method) except -1:
+    if method is None:
+        return OUTPUT_METHOD_XML
+    method = method.lower()
+    if method == "xml":
+        return OUTPUT_METHOD_XML
+    if method == "html":
+        return OUTPUT_METHOD_HTML
+    if method == "text":
+        return OUTPUT_METHOD_TEXT
+    raise ValueError(f"unknown output method {method!r}")
+
+
+cdef _textToString(xmlNode* c_node, encoding, bint with_tail):
+    cdef bint needs_conversion
+    cdef const_xmlChar* c_text
+    cdef xmlNode* c_text_node
+    cdef tree.xmlBuffer* c_buffer
+    cdef int error_result
+
+    c_buffer = tree.xmlBufferCreate()
+    if c_buffer is NULL:
+        raise MemoryError()
+
+    with nogil:
+        error_result = tree.xmlNodeBufGetContent(c_buffer, c_node)
+        if with_tail:
+            c_text_node = _textNodeOrSkip(c_node.next)
+            while c_text_node is not NULL:
+                tree.xmlBufferWriteChar(c_buffer, <const_char*>c_text_node.content)
+                c_text_node = _textNodeOrSkip(c_text_node.next)
+        c_text = tree.xmlBufferContent(c_buffer)
+
+    if error_result < 0 or c_text is NULL:
+        tree.xmlBufferFree(c_buffer)
+        raise SerialisationError, "Error during serialisation (out of memory?)"
+
+    try:
+        needs_conversion = 0
+        if encoding is unicode:
+            needs_conversion = 1
+        elif encoding is not None:
+            # Python prefers lower case encoding names
+            encoding = encoding.lower()
+            if encoding not in ('utf8', 'utf-8'):
+                if encoding == 'ascii':
+                    if isutf8l(c_text, tree.xmlBufferLength(c_buffer)):
+                        # will raise a decode error below
+                        needs_conversion = 1
+                else:
+                    needs_conversion = 1
+
+        if needs_conversion:
+            text = (<const_char*>c_text)[:tree.xmlBufferLength(c_buffer)].decode('utf8')
+            if encoding is not unicode:
+                encoding = _utf8(encoding)
+                text = python.PyUnicode_AsEncodedString(
+                    text, encoding, 'strict')
+        else:
+            text = (<unsigned char*>c_text)[:tree.xmlBufferLength(c_buffer)]
+    finally:
+        tree.xmlBufferFree(c_buffer)
+    return text
+
+
+cdef _tostring(_Element element, encoding, doctype, method,
+               bint write_xml_declaration, bint write_complete_document,
+               bint pretty_print, bint with_tail, int standalone):
+    """Serialize an element to an encoded string representation of its XML
+    tree.
+    """
+    cdef tree.xmlOutputBuffer* c_buffer
+    cdef tree.xmlBuf* c_result_buffer
+    cdef tree.xmlCharEncodingHandler* enchandler
+    cdef const_char* c_enc
+    cdef const_xmlChar* c_version
+    cdef const_xmlChar* c_doctype
+    cdef int c_method
+    cdef int error_result
+    if element is None:
+        return None
+    _assertValidNode(element)
+    c_method = _findOutputMethod(method)
+    if c_method == OUTPUT_METHOD_TEXT:
+        return _textToString(element._c_node, encoding, with_tail)
+    if encoding is None or encoding is unicode:
+        c_enc = NULL
+    else:
+        encoding = _utf8(encoding)
+        c_enc = _cstr(encoding)
+    if doctype is None:
+        c_doctype = NULL
+    else:
+        doctype = _utf8(doctype)
+        c_doctype = _xcstr(doctype)
+    # it is necessary to *and* find the encoding handler *and* use
+    # encoding during output
+    enchandler = tree.xmlFindCharEncodingHandler(c_enc)
+    if enchandler is NULL and c_enc is not NULL:
+        if encoding is not None:
+            encoding = encoding.decode('UTF-8')
+        raise LookupError, f"unknown encoding: '{encoding}'"
+    c_buffer = tree.xmlAllocOutputBuffer(enchandler)
+    if c_buffer is NULL:
+        tree.xmlCharEncCloseFunc(enchandler)
+        raise MemoryError()
+
+    with nogil:
+        _writeNodeToBuffer(c_buffer, element._c_node, c_enc, c_doctype, c_method,
+                           write_xml_declaration, write_complete_document,
+                           pretty_print, with_tail, standalone)
+        tree.xmlOutputBufferFlush(c_buffer)
+        if c_buffer.conv is not NULL:
+            c_result_buffer = c_buffer.conv
+        else:
+            c_result_buffer = c_buffer.buffer
+
+    error_result = c_buffer.error
+    if error_result != xmlerror.XML_ERR_OK:
+        tree.xmlOutputBufferClose(c_buffer)
+        _raiseSerialisationError(error_result)
+
+    try:
+        if encoding is unicode:
+            result = (<unsigned char*>tree.xmlBufContent(
+                c_result_buffer))[:tree.xmlBufUse(c_result_buffer)].decode('UTF-8')
+        else:
+            result = <bytes>(<unsigned char*>tree.xmlBufContent(
+                c_result_buffer))[:tree.xmlBufUse(c_result_buffer)]
+    finally:
+        error_result = tree.xmlOutputBufferClose(c_buffer)
+    if error_result == -1:
+        _raiseSerialisationError(error_result)
+    return result
+
+cdef bytes _tostringC14N(element_or_tree, bint exclusive, bint with_comments, inclusive_ns_prefixes):
+    cdef xmlDoc* c_doc
+    cdef xmlChar* c_buffer = NULL
+    cdef int byte_count = -1
+    cdef bytes result
+    cdef _Document doc
+    cdef _Element element
+    cdef xmlChar **c_inclusive_ns_prefixes
+
+    if isinstance(element_or_tree, _Element):
+        _assertValidNode(<_Element>element_or_tree)
+        doc = (<_Element>element_or_tree)._doc
+        c_doc = _plainFakeRootDoc(doc._c_doc, (<_Element>element_or_tree)._c_node, 0)
+    else:
+        doc = _documentOrRaise(element_or_tree)
+        _assertValidDoc(doc)
+        c_doc = doc._c_doc
+
+    c_inclusive_ns_prefixes = _convert_ns_prefixes(c_doc.dict, inclusive_ns_prefixes) if inclusive_ns_prefixes else NULL
+    try:
+         with nogil:
+             byte_count = c14n.xmlC14NDocDumpMemory(
+                 c_doc, NULL, exclusive, c_inclusive_ns_prefixes, with_comments, &c_buffer)
+
+    finally:
+         _destroyFakeDoc(doc._c_doc, c_doc)
+         if c_inclusive_ns_prefixes is not NULL:
+            python.lxml_free(c_inclusive_ns_prefixes)
+
+    if byte_count < 0 or c_buffer is NULL:
+        if c_buffer is not NULL:
+            tree.xmlFree(c_buffer)
+        raise C14NError, "C14N failed"
+    try:
+        result = c_buffer[:byte_count]
+    finally:
+        tree.xmlFree(c_buffer)
+    return result
+
+cdef _raiseSerialisationError(int error_result):
+    if error_result == xmlerror.XML_ERR_NO_MEMORY:
+        raise MemoryError()
+    message = ErrorTypes._getName(error_result)
+    if message is None:
+        message = f"unknown error {error_result}"
+    raise SerialisationError, message
+
+############################################################
+# low-level serialisation functions
+
+cdef void _writeDoctype(tree.xmlOutputBuffer* c_buffer,
+                        const_xmlChar* c_doctype) noexcept nogil:
+    tree.xmlOutputBufferWrite(c_buffer, tree.xmlStrlen(c_doctype),
+                              <const_char*>c_doctype)
+    tree.xmlOutputBufferWriteString(c_buffer, "\n")
+
+cdef void _writeNodeToBuffer(tree.xmlOutputBuffer* c_buffer,
+                             xmlNode* c_node, const_char* encoding, const_xmlChar* c_doctype,
+                             int c_method, bint write_xml_declaration,
+                             bint write_complete_document,
+                             bint pretty_print, bint with_tail,
+                             int standalone) noexcept nogil:
+    cdef xmlNode* c_nsdecl_node
+    cdef xmlDoc* c_doc = c_node.doc
+    if write_xml_declaration and c_method == OUTPUT_METHOD_XML:
+        _writeDeclarationToBuffer(c_buffer, c_doc.version, encoding, standalone)
+
+    # comments/processing instructions before doctype declaration
+    if write_complete_document and not c_buffer.error and c_doc.intSubset:
+        _writePrevSiblings(c_buffer, <xmlNode*>c_doc.intSubset, encoding, pretty_print)
+
+    if c_doctype:
+        _writeDoctype(c_buffer, c_doctype)
+    # write internal DTD subset, preceding PIs/comments, etc.
+    if write_complete_document and not c_buffer.error:
+        if c_doctype is NULL:
+            _writeDtdToBuffer(c_buffer, c_doc, c_node.name, c_method, encoding)
+        _writePrevSiblings(c_buffer, c_node, encoding, pretty_print)
+
+    c_nsdecl_node = c_node
+    if not c_node.parent or c_node.parent.type != tree.XML_DOCUMENT_NODE:
+        # copy the node and add namespaces from parents
+        # this is required to make libxml write them
+        c_nsdecl_node = tree.xmlCopyNode(c_node, 2)
+        if not c_nsdecl_node:
+            c_buffer.error = xmlerror.XML_ERR_NO_MEMORY
+            return
+        _copyParentNamespaces(c_node, c_nsdecl_node)
+
+        c_nsdecl_node.parent = c_node.parent
+        c_nsdecl_node.children = c_node.children
+        c_nsdecl_node.last = c_node.last
+
+    # write node
+    if c_method == OUTPUT_METHOD_HTML:
+        tree.htmlNodeDumpFormatOutput(
+            c_buffer, c_doc, c_nsdecl_node, encoding, pretty_print)
+    else:
+        tree.xmlNodeDumpOutput(
+            c_buffer, c_doc, c_nsdecl_node, 0, pretty_print, encoding)
+
+    if c_nsdecl_node is not c_node:
+        # clean up
+        c_nsdecl_node.children = c_nsdecl_node.last = NULL
+        tree.xmlFreeNode(c_nsdecl_node)
+
+    if c_buffer.error:
+        return
+
+    # write tail, trailing comments, etc.
+    if with_tail:
+        _writeTail(c_buffer, c_node, encoding, c_method, pretty_print)
+    if write_complete_document:
+        _writeNextSiblings(c_buffer, c_node, encoding, pretty_print)
+    if pretty_print:
+        tree.xmlOutputBufferWrite(c_buffer, 1, "\n")
+
+cdef void _writeDeclarationToBuffer(tree.xmlOutputBuffer* c_buffer,
+                                    const_xmlChar* version, const_char* encoding,
+                                    int standalone) noexcept nogil:
+    if version is NULL:
+        version = <unsigned char*>"1.0"
+    tree.xmlOutputBufferWrite(c_buffer, 15, "<?xml version='")
+    tree.xmlOutputBufferWriteString(c_buffer, <const_char*>version)
+    tree.xmlOutputBufferWrite(c_buffer, 12, "' encoding='")
+    tree.xmlOutputBufferWriteString(c_buffer, encoding)
+    if standalone == 0:
+        tree.xmlOutputBufferWrite(c_buffer, 20, "' standalone='no'?>\n")
+    elif standalone == 1:
+        tree.xmlOutputBufferWrite(c_buffer, 21, "' standalone='yes'?>\n")
+    else:
+        tree.xmlOutputBufferWrite(c_buffer, 4, "'?>\n")
+
+cdef void _writeDtdToBuffer(tree.xmlOutputBuffer* c_buffer,
+                            xmlDoc* c_doc, const_xmlChar* c_root_name,
+                            int c_method, const_char* encoding) noexcept nogil:
+    cdef tree.xmlDtd* c_dtd
+    cdef xmlNode* c_node
+    cdef char* quotechar
+    c_dtd = c_doc.intSubset
+    if not c_dtd or not c_dtd.name:
+        return
+
+    # Name in document type declaration must match the root element tag.
+    # For XML, case sensitive match, for HTML insensitive.
+    if c_method == OUTPUT_METHOD_HTML:
+        if tree.xmlStrcasecmp(c_root_name, c_dtd.name) != 0:
+            return
+    else:
+        if tree.xmlStrcmp(c_root_name, c_dtd.name) != 0:
+            return
+
+    tree.xmlOutputBufferWrite(c_buffer, 10, "<!DOCTYPE ")
+    tree.xmlOutputBufferWriteString(c_buffer, <const_char*>c_dtd.name)
+
+    cdef const_xmlChar* public_id = c_dtd.ExternalID
+    cdef const_xmlChar* sys_url = c_dtd.SystemID
+    if public_id and public_id[0] == b'\0':
+        public_id = NULL
+    if sys_url and sys_url[0] == b'\0':
+        sys_url = NULL
+
+    if public_id:
+        tree.xmlOutputBufferWrite(c_buffer, 9, ' PUBLIC "')
+        tree.xmlOutputBufferWriteString(c_buffer, <const_char*>public_id)
+        if sys_url:
+            tree.xmlOutputBufferWrite(c_buffer, 2, '" ')
+        else:
+            tree.xmlOutputBufferWrite(c_buffer, 1, '"')
+    elif sys_url:
+        tree.xmlOutputBufferWrite(c_buffer, 8, ' SYSTEM ')
+
+    if sys_url:
+        if tree.xmlStrchr(sys_url, b'"'):
+            quotechar = '\''
+        else:
+            quotechar = '"'
+        tree.xmlOutputBufferWrite(c_buffer, 1, quotechar)
+        tree.xmlOutputBufferWriteString(c_buffer, <const_char*>sys_url)
+        tree.xmlOutputBufferWrite(c_buffer, 1, quotechar)
+
+    if (not c_dtd.entities and not c_dtd.elements and
+           not c_dtd.attributes and not c_dtd.notations and
+           not c_dtd.pentities):
+        tree.xmlOutputBufferWrite(c_buffer, 2, '>\n')
+        return
+
+    tree.xmlOutputBufferWrite(c_buffer, 3, ' [\n')
+    if c_dtd.notations and not c_buffer.error:
+        c_buf = tree.xmlBufferCreate()
+        if not c_buf:
+            c_buffer.error = xmlerror.XML_ERR_NO_MEMORY
+            return
+        tree.xmlDumpNotationTable(c_buf, <tree.xmlNotationTable*>c_dtd.notations)
+        tree.xmlOutputBufferWrite(
+            c_buffer, tree.xmlBufferLength(c_buf),
+            <const_char*>tree.xmlBufferContent(c_buf))
+        tree.xmlBufferFree(c_buf)
+    c_node = c_dtd.children
+    while c_node and not c_buffer.error:
+        tree.xmlNodeDumpOutput(c_buffer, c_node.doc, c_node, 0, 0, encoding)
+        c_node = c_node.next
+    tree.xmlOutputBufferWrite(c_buffer, 3, "]>\n")
+
+cdef void _writeTail(tree.xmlOutputBuffer* c_buffer, xmlNode* c_node,
+                     const_char* encoding, int c_method, bint pretty_print) noexcept nogil:
+    "Write the element tail."
+    c_node = c_node.next
+    while c_node and not c_buffer.error and c_node.type in (
+            tree.XML_TEXT_NODE, tree.XML_CDATA_SECTION_NODE):
+        if c_method == OUTPUT_METHOD_HTML:
+            tree.htmlNodeDumpFormatOutput(
+                c_buffer, c_node.doc, c_node, encoding, pretty_print)
+        else:
+            tree.xmlNodeDumpOutput(
+                c_buffer, c_node.doc, c_node, 0, pretty_print, encoding)
+        c_node = c_node.next
+
+cdef void _writePrevSiblings(tree.xmlOutputBuffer* c_buffer, xmlNode* c_node,
+                             const_char* encoding, bint pretty_print) noexcept nogil:
+    cdef xmlNode* c_sibling
+    if c_node.parent and _isElement(c_node.parent):
+        return
+    # we are at a root node, so add PI and comment siblings
+    c_sibling = c_node
+    while c_sibling.prev and \
+            (c_sibling.prev.type == tree.XML_PI_NODE or
+             c_sibling.prev.type == tree.XML_COMMENT_NODE):
+        c_sibling = c_sibling.prev
+    while c_sibling is not c_node and not c_buffer.error:
+        tree.xmlNodeDumpOutput(c_buffer, c_node.doc, c_sibling, 0,
+                               pretty_print, encoding)
+        if pretty_print:
+            tree.xmlOutputBufferWriteString(c_buffer, "\n")
+        c_sibling = c_sibling.next
+
+cdef void _writeNextSiblings(tree.xmlOutputBuffer* c_buffer, xmlNode* c_node,
+                             const_char* encoding, bint pretty_print) noexcept nogil:
+    cdef xmlNode* c_sibling
+    if c_node.parent and _isElement(c_node.parent):
+        return
+    # we are at a root node, so add PI and comment siblings
+    c_sibling = c_node.next
+    while not c_buffer.error and c_sibling and \
+            (c_sibling.type == tree.XML_PI_NODE or
+             c_sibling.type == tree.XML_COMMENT_NODE):
+        if pretty_print:
+            tree.xmlOutputBufferWriteString(c_buffer, "\n")
+        tree.xmlNodeDumpOutput(c_buffer, c_node.doc, c_sibling, 0,
+                               pretty_print, encoding)
+        c_sibling = c_sibling.next
+
+
+# copied and adapted from libxml2 (xmlBufAttrSerializeTxtContent())
+cdef _write_attr_string(tree.xmlOutputBuffer* buf, const char *string):
+    cdef const char *base
+    cdef const char *cur
+
+    if string == NULL:
+        return
+
+    base = cur = <const char*>string
+    while cur[0] != 0:
+        if cur[0] == b'\n':
+            if base != cur:
+                tree.xmlOutputBufferWrite(buf, cur - base, base)
+
+            tree.xmlOutputBufferWrite(buf, 5, "&#10;")
+            cur += 1
+            base = cur
+
+        elif cur[0] == b'\r':
+            if base != cur:
+                tree.xmlOutputBufferWrite(buf, cur - base, base)
+
+            tree.xmlOutputBufferWrite(buf, 5, "&#13;")
+            cur += 1
+            base = cur
+
+        elif cur[0] == b'\t':
+            if base != cur:
+                tree.xmlOutputBufferWrite(buf, cur - base, base)
+
+            tree.xmlOutputBufferWrite(buf, 4, "&#9;")
+            cur += 1
+            base = cur
+
+        elif cur[0] == b'"':
+            if base != cur:
+                tree.xmlOutputBufferWrite(buf, cur - base, base)
+
+            tree.xmlOutputBufferWrite(buf, 6, "&quot;")
+            cur += 1
+            base = cur
+
+        elif cur[0] == b'<':
+            if base != cur:
+                tree.xmlOutputBufferWrite(buf, cur - base, base)
+
+            tree.xmlOutputBufferWrite(buf, 4, "&lt;")
+            cur += 1
+            base = cur
+
+        elif cur[0] == b'>':
+            if base != cur:
+                tree.xmlOutputBufferWrite(buf, cur - base, base)
+
+            tree.xmlOutputBufferWrite(buf, 4, "&gt;")
+            cur += 1
+            base = cur
+        elif cur[0] == b'&':
+            if base != cur:
+                tree.xmlOutputBufferWrite(buf, cur - base, base)
+
+            tree.xmlOutputBufferWrite(buf, 5, "&amp;")
+            cur += 1
+            base = cur
+
+        else:
+            # Leave further encoding and escaping to the buffer encoder.
+            cur += 1
+
+    if base != cur:
+        tree.xmlOutputBufferWrite(buf, cur - base, base)
+
+
+cdef void _write_cdata_section(tree.xmlOutputBuffer* buf, const char* c_data, const char* c_end):
+    tree.xmlOutputBufferWrite(buf, 9, "<![CDATA[")
+    while c_end - c_data > limits.INT_MAX:
+        tree.xmlOutputBufferWrite(buf, limits.INT_MAX, c_data)
+        c_data += limits.INT_MAX
+    tree.xmlOutputBufferWrite(buf, c_end - c_data, c_data)
+    tree.xmlOutputBufferWrite(buf, 3, "]]>")
+
+
+cdef _write_cdata_string(tree.xmlOutputBuffer* buf, bytes bstring):
+    cdef const char* c_data = bstring
+    cdef const char* c_end = c_data + len(bstring)
+    cdef const char* c_pos = c_data
+    cdef bint nothing_written = True
+
+    while True:
+        c_pos = <const char*> cstring_h.memchr(c_pos, b']', c_end - c_pos)
+        if not c_pos:
+            break
+        c_pos += 1
+        next_char = c_pos[0]
+        c_pos += 1
+        if next_char != b']':
+            continue
+        # Found ']]', c_pos points to next character.
+        while c_pos[0] == b']':
+            c_pos += 1
+        if c_pos[0] != b'>':
+            if c_pos == c_end:
+                break
+            # c_pos[0] is neither ']' nor '>', continue with next character.
+            c_pos += 1
+            continue
+
+        # Write section up to ']]' and start next block at trailing '>'.
+        _write_cdata_section(buf, c_data, c_pos)
+        nothing_written = False
+        c_data = c_pos
+        c_pos += 1
+
+    if nothing_written or c_data < c_end:
+        _write_cdata_section(buf, c_data, c_end)
+
+
+############################################################
+# output to file-like objects
+
+cdef object io_open
+from io import open as io_open
+
+cdef object gzip
+import gzip
+
+cdef object getwriter
+from codecs import getwriter
+cdef object utf8_writer = getwriter('utf8')
+
+cdef object contextmanager
+from contextlib import contextmanager
+
+cdef object _open_utf8_file
+
+@contextmanager
+def _open_utf8_file(file, compression=0):
+    file = _getFSPathOrObject(file)
+    if _isString(file):
+        if compression:
+            with gzip.GzipFile(file, mode='wb', compresslevel=compression) as zf:
+                yield utf8_writer(zf)
+        else:
+            with io_open(file, 'w', encoding='utf8') as f:
+                yield f
+    else:
+        if compression:
+            with gzip.GzipFile(fileobj=file, mode='wb', compresslevel=compression) as zf:
+                yield utf8_writer(zf)
+        else:
+            yield utf8_writer(file)
+
+
+@cython.final
+@cython.internal
+cdef class _FilelikeWriter:
+    cdef object _filelike
+    cdef object _close_filelike
+    cdef _ExceptionContext _exc_context
+    cdef _ErrorLog error_log
+
+    def __cinit__(self, filelike, exc_context=None, compression=None, close=False):
+        if compression is not None and compression > 0:
+            filelike = GzipFile(
+                fileobj=filelike, mode='wb', compresslevel=compression)
+            self._close_filelike = filelike.close
+        elif close:
+            self._close_filelike = filelike.close
+        self._filelike = filelike
+        if exc_context is None:
+            self._exc_context = _ExceptionContext()
+        else:
+            self._exc_context = exc_context
+        self.error_log = _ErrorLog()
+
+    cdef tree.xmlOutputBuffer* _createOutputBuffer(
+        self, tree.xmlCharEncodingHandler* enchandler) except NULL:
+        cdef tree.xmlOutputBuffer* c_buffer
+        c_buffer = tree.xmlOutputBufferCreateIO(
+            <tree.xmlOutputWriteCallback>_writeFilelikeWriter, _closeFilelikeWriter,
+            <python.PyObject*>self, enchandler)
+        if c_buffer is NULL:
+            raise IOError, "Could not create I/O writer context."
+        return c_buffer
+
+    cdef int write(self, char* c_buffer, int size) noexcept:
+        try:
+            if self._filelike is None:
+                raise IOError, "File is already closed"
+            py_buffer = <bytes>c_buffer[:size]
+            self._filelike.write(py_buffer)
+        except:
+            size = -1
+            self._exc_context._store_raised()
+        finally:
+            return size  # and swallow any further exceptions
+
+    cdef int close(self) noexcept:
+        retval = 0
+        try:
+            if self._close_filelike is not None:
+                self._close_filelike()
+            # we should not close the file here as we didn't open it
+            self._filelike = None
+        except:
+            retval = -1
+            self._exc_context._store_raised()
+        finally:
+            return retval  # and swallow any further exceptions
+
+cdef int _writeFilelikeWriter(void* ctxt, char* c_buffer, int length) noexcept:
+    return (<_FilelikeWriter>ctxt).write(c_buffer, length)
+
+cdef int _closeFilelikeWriter(void* ctxt) noexcept:
+    return (<_FilelikeWriter>ctxt).close()
+
+cdef _tofilelike(f, _Element element, encoding, doctype, method,
+                 bint write_xml_declaration, bint write_doctype,
+                 bint pretty_print, bint with_tail, int standalone,
+                 int compression):
+    cdef _FilelikeWriter writer = None
+    cdef tree.xmlOutputBuffer* c_buffer
+    cdef tree.xmlCharEncodingHandler* enchandler
+    cdef const_char* c_enc
+    cdef const_xmlChar* c_doctype
+    cdef int error_result
+
+    c_method = _findOutputMethod(method)
+    if c_method == OUTPUT_METHOD_TEXT:
+        data = _textToString(element._c_node, encoding, with_tail)
+        if compression:
+            bytes_out = BytesIO()
+            with GzipFile(fileobj=bytes_out, mode='wb', compresslevel=compression) as gzip_file:
+                gzip_file.write(data)
+            data = bytes_out.getvalue()
+        f = _getFSPathOrObject(f)
+        if _isString(f):
+            filename8 = _encodeFilename(f)
+            with open(filename8, 'wb') as f:
+                f.write(data)
+        else:
+            f.write(data)
+        return
+
+    if encoding is None:
+        c_enc = NULL
+    else:
+        encoding = _utf8(encoding)
+        c_enc = _cstr(encoding)
+    if doctype is None:
+        c_doctype = NULL
+    else:
+        doctype = _utf8(doctype)
+        c_doctype = _xcstr(doctype)
+
+    writer = _create_output_buffer(f, c_enc, compression, &c_buffer, close=False)
+    if writer is None:
+        with nogil:
+            error_result = _serialise_node(
+                c_buffer, c_doctype, c_enc, element._c_node, c_method,
+                write_xml_declaration, write_doctype, pretty_print, with_tail, standalone)
+    else:
+        error_result = _serialise_node(
+            c_buffer, c_doctype, c_enc, element._c_node, c_method,
+            write_xml_declaration, write_doctype, pretty_print, with_tail, standalone)
+
+    if writer is not None:
+        writer._exc_context._raise_if_stored()
+    if error_result != xmlerror.XML_ERR_OK:
+        _raiseSerialisationError(error_result)
+
+
+cdef int _serialise_node(tree.xmlOutputBuffer* c_buffer, const_xmlChar* c_doctype,
+                         const_char* c_enc, xmlNode* c_node, int c_method,
+                         bint write_xml_declaration, bint write_doctype, bint pretty_print,
+                         bint with_tail, int standalone) noexcept nogil:
+    _writeNodeToBuffer(
+        c_buffer, c_node, c_enc, c_doctype, c_method,
+        write_xml_declaration, write_doctype, pretty_print, with_tail, standalone)
+    error_result = c_buffer.error
+    if error_result == xmlerror.XML_ERR_OK:
+        error_result = tree.xmlOutputBufferClose(c_buffer)
+        if error_result != -1:
+            error_result = xmlerror.XML_ERR_OK
+    else:
+        tree.xmlOutputBufferClose(c_buffer)
+    return error_result
+
+
+cdef _FilelikeWriter _create_output_buffer(
+        f, const_char* c_enc, int c_compression,
+        tree.xmlOutputBuffer** c_buffer_ret, bint close):
+    cdef tree.xmlOutputBuffer* c_buffer
+    cdef _FilelikeWriter writer
+    cdef bytes filename8
+    enchandler = tree.xmlFindCharEncodingHandler(c_enc)
+    if enchandler is NULL:
+        raise LookupError(
+            f"unknown encoding: '{c_enc.decode('UTF-8') if c_enc is not NULL else u''}'")
+    try:
+        f = _getFSPathOrObject(f)
+
+        if c_compression and not HAS_ZLIB_COMPRESSION and _isString(f):
+            # Let "_FilelikeWriter" fall back to Python's GzipFile.
+            f = open(f, mode="wb")
+            close = True
+
+        if _isString(f):
+            filename8 = _encodeFilename(f)
+            if b'%' in filename8 and (
+                    # Exclude absolute Windows paths and file:// URLs.
+                    _isFilePath(<const xmlChar*>filename8) not in (NO_FILE_PATH, ABS_WIN_FILE_PATH)
+                    or filename8[:7].lower() == b'file://'):
+                # A file path (not a URL) containing the '%' URL escape character.
+                # libxml2 uses URL-unescaping on these, so escape the path before passing it in.
+                filename8 = filename8.replace(b'%', b'%25')
+            c_buffer = tree.xmlOutputBufferCreateFilename(
+                _cstr(filename8), enchandler, c_compression)
+            if c_buffer is NULL:
+                python.PyErr_SetFromErrno(IOError)  # raises IOError
+            writer = None
+        elif hasattr(f, 'write'):
+            writer = _FilelikeWriter(f, compression=c_compression, close=close)
+            c_buffer = writer._createOutputBuffer(enchandler)
+        else:
+            raise TypeError(
+                f"File or filename expected, got '{python._fqtypename(f).decode('UTF-8')}'")
+    except:
+        tree.xmlCharEncCloseFunc(enchandler)
+        raise
+    c_buffer_ret[0] = c_buffer
+    return writer
+
+cdef xmlChar **_convert_ns_prefixes(tree.xmlDict* c_dict, ns_prefixes) except NULL:
+    cdef size_t i, num_ns_prefixes = len(ns_prefixes)
+    # Need to allocate one extra memory block to handle last NULL entry
+    c_ns_prefixes = <xmlChar **>python.lxml_malloc(num_ns_prefixes + 1, sizeof(xmlChar*))
+    if not c_ns_prefixes:
+        raise MemoryError()
+    i = 0
+    try:
+        for prefix in ns_prefixes:
+             prefix_utf = _utf8(prefix)
+             c_prefix_len = len(prefix_utf)
+             if c_prefix_len > limits.INT_MAX:
+                raise ValueError("Prefix too long")
+             c_prefix = tree.xmlDictExists(c_dict, _xcstr(prefix_utf), <int> c_prefix_len)
+             if c_prefix:
+                 # unknown prefixes do not need to get serialised
+                 c_ns_prefixes[i] = <xmlChar*>c_prefix
+                 i += 1
+    except:
+        python.lxml_free(c_ns_prefixes)
+        raise
+
+    c_ns_prefixes[i] = NULL  # append end marker
+    return c_ns_prefixes
+
+cdef _tofilelikeC14N(f, _Element element, bint exclusive, bint with_comments,
+                     int compression, inclusive_ns_prefixes):
+    cdef _FilelikeWriter writer = None
+    cdef tree.xmlOutputBuffer* c_buffer
+    cdef xmlChar **c_inclusive_ns_prefixes = NULL
+    cdef char* c_filename
+    cdef xmlDoc* c_base_doc
+    cdef xmlDoc* c_doc
+    cdef int bytes_count, error = 0
+
+    c_base_doc = element._c_node.doc
+    c_doc = _fakeRootDoc(c_base_doc, element._c_node)
+    try:
+        c_inclusive_ns_prefixes = (
+            _convert_ns_prefixes(c_doc.dict, inclusive_ns_prefixes)
+            if inclusive_ns_prefixes else NULL)
+
+        f = _getFSPathOrObject(f)
+
+        close = False
+        if compression and not HAS_ZLIB_COMPRESSION and _isString(f):
+            # Let "_FilelikeWriter" fall back to Python's GzipFile.
+            f = open(f, mode="wb")
+            close = True
+
+        if _isString(f):
+            filename8 = _encodeFilename(f)
+            c_filename = _cstr(filename8)
+            with nogil:
+                error = c14n.xmlC14NDocSave(
+                    c_doc, NULL, exclusive, c_inclusive_ns_prefixes,
+                    with_comments, c_filename, compression)
+        elif hasattr(f, 'write'):
+            writer   = _FilelikeWriter(f, compression=compression, close=close)
+            c_buffer = writer._createOutputBuffer(NULL)
+            try:
+                with writer.error_log:
+                    bytes_count = c14n.xmlC14NDocSaveTo(
+                        c_doc, NULL, exclusive, c_inclusive_ns_prefixes,
+                        with_comments, c_buffer)
+            finally:
+                error = tree.xmlOutputBufferClose(c_buffer)
+            if bytes_count < 0:
+                error = bytes_count
+            elif error != -1:
+                error = xmlerror.XML_ERR_OK
+        else:
+            raise TypeError(f"File or filename expected, got '{python._fqtypename(f).decode('UTF-8')}'")
+    finally:
+        _destroyFakeDoc(c_base_doc, c_doc)
+        if c_inclusive_ns_prefixes is not NULL:
+            python.lxml_free(c_inclusive_ns_prefixes)
+
+    if writer is not None:
+        writer._exc_context._raise_if_stored()
+
+    if error < 0:
+        message = "C14N failed"
+        if writer is not None:
+            errors = writer.error_log
+            if len(errors):
+                message = errors[0].message
+        raise C14NError(message)
+
+
+# C14N 2.0
+
+def canonicalize(xml_data=None, *, out=None, from_file=None, **options):
+    """Convert XML to its C14N 2.0 serialised form.
+
+    If *out* is provided, it must be a file or file-like object that receives
+    the serialised canonical XML output (text, not bytes) through its ``.write()``
+    method.  To write to a file, open it in text mode with encoding "utf-8".
+    If *out* is not provided, this function returns the output as text string.
+
+    Either *xml_data* (an XML string, tree or Element) or *file*
+    (a file path or file-like object) must be provided as input.
+
+    The configuration options are the same as for the ``C14NWriterTarget``.
+    """
+    if xml_data is None and from_file is None:
+        raise ValueError("Either 'xml_data' or 'from_file' must be provided as input")
+
+    sio = None
+    if out is None:
+        sio = out = StringIO()
+
+    target = C14NWriterTarget(out.write, **options)
+
+    if xml_data is not None and not isinstance(xml_data, basestring):
+        _tree_to_target(xml_data, target)
+        return sio.getvalue() if sio is not None else None
+
+    cdef _FeedParser parser = XMLParser(
+        target=target,
+        attribute_defaults=True,
+        collect_ids=False,
+    )
+
+    if xml_data is not None:
+        parser.feed(xml_data)
+        parser.close()
+    elif from_file is not None:
+        try:
+            _parseDocument(from_file, parser, base_url=None)
+        except _TargetParserResult:
+            pass
+
+    return sio.getvalue() if sio is not None else None
+
+
+cdef _tree_to_target(element, target):
+    for event, elem in iterwalk(element, events=('start', 'end', 'start-ns', 'comment', 'pi')):
+        text = None
+        if event == 'start':
+            target.start(elem.tag, elem.attrib)
+            text = elem.text
+        elif event == 'end':
+            target.end(elem.tag)
+            text = elem.tail
+        elif event == 'start-ns':
+            target.start_ns(*elem)
+            continue
+        elif event == 'comment':
+            target.comment(elem.text)
+            text = elem.tail
+        elif event == 'pi':
+            target.pi(elem.target, elem.text)
+            text = elem.tail
+        if text:
+            target.data(text)
+    return target.close()
+
+
+cdef object _looks_like_prefix_name = re.compile(r'^\w+:\w+$', re.UNICODE).match
+
+
+cdef class C14NWriterTarget:
+    """
+    Canonicalization writer target for the XMLParser.
+
+    Serialises parse events to XML C14N 2.0.
+
+    Configuration options:
+
+    - *with_comments*: set to true to include comments
+    - *strip_text*: set to true to strip whitespace before and after text content
+    - *rewrite_prefixes*: set to true to replace namespace prefixes by "n{number}"
+    - *qname_aware_tags*: a set of qname aware tag names in which prefixes
+                          should be replaced in text content
+    - *qname_aware_attrs*: a set of qname aware attribute names in which prefixes
+                           should be replaced in text content
+    - *exclude_attrs*: a set of attribute names that should not be serialised
+    - *exclude_tags*: a set of tag names that should not be serialised
+    """
+    cdef object _write
+    cdef list _data
+    cdef set _qname_aware_tags
+    cdef object _find_qname_aware_attrs
+    cdef list _declared_ns_stack
+    cdef list _ns_stack
+    cdef dict _prefix_map
+    cdef list _preserve_space
+    cdef tuple _pending_start
+    cdef set _exclude_tags
+    cdef set _exclude_attrs
+    cdef Py_ssize_t _ignored_depth
+    cdef bint _with_comments
+    cdef bint _strip_text
+    cdef bint _rewrite_prefixes
+    cdef bint _root_seen
+    cdef bint _root_done
+
+    def __init__(self, write, *,
+                 with_comments=False, strip_text=False, rewrite_prefixes=False,
+                 qname_aware_tags=None, qname_aware_attrs=None,
+                 exclude_attrs=None, exclude_tags=None):
+        self._write = write
+        self._data = []
+        self._with_comments = with_comments
+        self._strip_text = strip_text
+        self._exclude_attrs = set(exclude_attrs) if exclude_attrs else None
+        self._exclude_tags = set(exclude_tags) if exclude_tags else None
+
+        self._rewrite_prefixes = rewrite_prefixes
+        if qname_aware_tags:
+            self._qname_aware_tags = set(qname_aware_tags)
+        else:
+            self._qname_aware_tags = None
+        if qname_aware_attrs:
+            self._find_qname_aware_attrs = set(qname_aware_attrs).intersection
+        else:
+            self._find_qname_aware_attrs = None
+
+        # Stack with globally and newly declared namespaces as (uri, prefix) pairs.
+        self._declared_ns_stack = [[
+            ("http://www.w3.org/XML/1998/namespace", "xml"),
+        ]]
+        # Stack with user declared namespace prefixes as (uri, prefix) pairs.
+        self._ns_stack = []
+        if not rewrite_prefixes:
+            self._ns_stack.append(_DEFAULT_NAMESPACE_PREFIXES_ITEMS)
+        self._ns_stack.append([])
+        self._prefix_map = {}
+        self._preserve_space = [False]
+        self._pending_start = None
+        self._ignored_depth = 0
+        self._root_seen = False
+        self._root_done = False
+
+    def _iter_namespaces(self, ns_stack):
+        for namespaces in reversed(ns_stack):
+            if namespaces:  # almost no element declares new namespaces
+                yield from namespaces
+
+    cdef _resolve_prefix_name(self, prefixed_name):
+        prefix, name = prefixed_name.split(':', 1)
+        for uri, p in self._iter_namespaces(self._ns_stack):
+            if p == prefix:
+                return f'{{{uri}}}{name}'
+        raise ValueError(f'Prefix {prefix} of QName "{prefixed_name}" is not declared in scope')
+
+    cdef _qname(self, qname, uri=None):
+        if uri is None:
+            uri, tag = qname[1:].rsplit('}', 1) if qname[:1] == '{' else ('', qname)
+        else:
+            tag = qname
+
+        prefixes_seen = set()
+        for u, prefix in self._iter_namespaces(self._declared_ns_stack):
+            if u == uri and prefix not in prefixes_seen:
+                return f'{prefix}:{tag}' if prefix else tag, tag, uri
+            prefixes_seen.add(prefix)
+
+        # Not declared yet => add new declaration.
+        if self._rewrite_prefixes:
+            if uri in self._prefix_map:
+                prefix = self._prefix_map[uri]
+            else:
+                prefix = self._prefix_map[uri] = f'n{len(self._prefix_map)}'
+            self._declared_ns_stack[-1].append((uri, prefix))
+            return f'{prefix}:{tag}', tag, uri
+
+        if not uri and '' not in prefixes_seen:
+            # No default namespace declared => no prefix needed.
+            return tag, tag, uri
+
+        for u, prefix in self._iter_namespaces(self._ns_stack):
+            if u == uri:
+                self._declared_ns_stack[-1].append((uri, prefix))
+                return f'{prefix}:{tag}' if prefix else tag, tag, uri
+
+        if not uri:
+            # As soon as a default namespace is defined,
+            # anything that has no namespace (and thus, no prefix) goes there.
+            return tag, tag, uri
+
+        raise ValueError(f'Namespace "{uri}" of name "{tag}" is not declared in scope')
+
+    def data(self, data):
+        if not self._ignored_depth:
+            self._data.append(data)
+
+    cdef _flush(self):
+        cdef unicode data = ''.join(self._data)
+        del self._data[:]
+        if self._strip_text and not self._preserve_space[-1]:
+            data = data.strip()
+        if self._pending_start is not None:
+            (tag, attrs, new_namespaces), self._pending_start = self._pending_start, None
+            qname_text = data if ':' in data and _looks_like_prefix_name(data) else None
+            self._start(tag, attrs, new_namespaces, qname_text)
+            if qname_text is not None:
+                return
+        if data and self._root_seen:
+            self._write(_escape_cdata_c14n(data))
+
+    def start_ns(self, prefix, uri):
+        if self._ignored_depth:
+            return
+        # we may have to resolve qnames in text content
+        if self._data:
+            self._flush()
+        self._ns_stack[-1].append((uri, prefix))
+
+    def start(self, tag, attrs):
+        if self._exclude_tags is not None and (
+                self._ignored_depth or tag in self._exclude_tags):
+            self._ignored_depth += 1
+            return
+        if self._data:
+            self._flush()
+
+        new_namespaces = []
+        self._declared_ns_stack.append(new_namespaces)
+
+        if self._qname_aware_tags is not None and tag in self._qname_aware_tags:
+            # Need to parse text first to see if it requires a prefix declaration.
+            self._pending_start = (tag, attrs, new_namespaces)
+            return
+        self._start(tag, attrs, new_namespaces)
+
+    cdef _start(self, tag, attrs, new_namespaces, qname_text=None):
+        if self._exclude_attrs is not None and attrs:
+            attrs = {k: v for k, v in attrs.items() if k not in self._exclude_attrs}
+
+        qnames = {tag, *attrs}
+        resolved_names = {}
+
+        # Resolve prefixes in attribute and tag text.
+        if qname_text is not None:
+            qname = resolved_names[qname_text] = self._resolve_prefix_name(qname_text)
+            qnames.add(qname)
+        if self._find_qname_aware_attrs is not None and attrs:
+            qattrs = self._find_qname_aware_attrs(attrs)
+            if qattrs:
+                for attr_name in qattrs:
+                    value = attrs[attr_name]
+                    if _looks_like_prefix_name(value):
+                        qname = resolved_names[value] = self._resolve_prefix_name(value)
+                        qnames.add(qname)
+            else:
+                qattrs = None
+        else:
+            qattrs = None
+
+        # Assign prefixes in lexicographical order of used URIs.
+        parsed_qnames = {n: self._qname(n) for n in sorted(
+            qnames, key=lambda n: n.split('}', 1))}
+
+        # Write namespace declarations in prefix order ...
+        if new_namespaces:
+            attr_list = [
+                ('xmlns:' + prefix if prefix else 'xmlns', uri)
+                for uri, prefix in new_namespaces
+            ]
+            attr_list.sort()
+        else:
+            # almost always empty
+            attr_list = []
+
+        # ... followed by attributes in URI+name order
+        if attrs:
+            for k, v in sorted(attrs.items()):
+                if qattrs is not None and k in qattrs and v in resolved_names:
+                    v = parsed_qnames[resolved_names[v]][0]
+                attr_qname, attr_name, uri = parsed_qnames[k]
+                # No prefix for attributes in default ('') namespace.
+                attr_list.append((attr_qname if uri else attr_name, v))
+
+        # Honour xml:space attributes.
+        space_behaviour = attrs.get('{http://www.w3.org/XML/1998/namespace}space')
+        self._preserve_space.append(
+            space_behaviour == 'preserve' if space_behaviour
+            else self._preserve_space[-1])
+
+        # Write the tag.
+        write = self._write
+        write('<' + parsed_qnames[tag][0])
+        if attr_list:
+            write(''.join([f' {k}="{_escape_attrib_c14n(v)}"' for k, v in attr_list]))
+        write('>')
+
+        # Write the resolved qname text content.
+        if qname_text is not None:
+            write(_escape_cdata_c14n(parsed_qnames[resolved_names[qname_text]][0]))
+
+        self._root_seen = True
+        self._ns_stack.append([])
+
+    def end(self, tag):
+        if self._ignored_depth:
+            self._ignored_depth -= 1
+            return
+        if self._data:
+            self._flush()
+        self._write(f'</{self._qname(tag)[0]}>')
+        self._preserve_space.pop()
+        self._root_done = len(self._preserve_space) == 1
+        self._declared_ns_stack.pop()
+        self._ns_stack.pop()
+
+    def comment(self, text):
+        if not self._with_comments:
+            return
+        if self._ignored_depth:
+            return
+        if self._root_done:
+            self._write('\n')
+        elif self._root_seen and self._data:
+            self._flush()
+        self._write(f'<!--{_escape_cdata_c14n(text)}-->')
+        if not self._root_seen:
+            self._write('\n')
+
+    def pi(self, target, data):
+        if self._ignored_depth:
+            return
+        if self._root_done:
+            self._write('\n')
+        elif self._root_seen and self._data:
+            self._flush()
+        self._write(
+            f'<?{target} {_escape_cdata_c14n(data)}?>' if data else f'<?{target}?>')
+        if not self._root_seen:
+            self._write('\n')
+
+    def close(self):
+        return None
+
+
+cdef _raise_serialization_error(text):
+    raise TypeError("cannot serialize %r (type %s)" % (text, type(text).__name__))
+
+
+cdef unicode _escape_cdata_c14n(stext):
+    # escape character data
+    cdef unicode text
+    cdef Py_UCS4 ch
+    cdef Py_ssize_t start = 0, pos = 0
+    cdef list substrings = None
+    try:
+        text = unicode(stext)
+    except (TypeError, AttributeError):
+        return _raise_serialization_error(stext)
+
+    for pos, ch in enumerate(text):
+        if ch == '&':
+            escape = '&amp;'
+        elif ch == '<':
+            escape = '&lt;'
+        elif ch == '>':
+            escape = '&gt;'
+        elif ch == '\r':
+            escape = '&#xD;'
+        else:
+            continue
+
+        if substrings is None:
+            substrings = []
+        if pos > start:
+            substrings.append(text[start:pos])
+        substrings.append(escape)
+        start = pos + 1
+
+    if substrings is None:
+        return text
+    if pos >= start:
+        substrings.append(text[start:pos+1])
+    return ''.join(substrings)
+
+
+cdef unicode _escape_attrib_c14n(stext):
+    # escape attribute value
+    cdef unicode text
+    cdef Py_UCS4 ch
+    cdef Py_ssize_t start = 0, pos = 0
+    cdef list substrings = None
+    try:
+        text = unicode(stext)
+    except (TypeError, AttributeError):
+        return _raise_serialization_error(stext)
+
+    for pos, ch in enumerate(text):
+        if ch == '&':
+            escape = '&amp;'
+        elif ch == '<':
+            escape = '&lt;'
+        elif ch == '"':
+            escape = '&quot;'
+        elif ch == '\t':
+            escape = '&#x9;'
+        elif ch == '\n':
+            escape = '&#xA;'
+        elif ch == '\r':
+            escape = '&#xD;'
+        else:
+            continue
+
+        if substrings is None:
+            substrings = []
+        if pos > start:
+            substrings.append(text[start:pos])
+        substrings.append(escape)
+        start = pos + 1
+
+    if substrings is None:
+        return text
+    if pos >= start:
+        substrings.append(text[start:pos+1])
+    return ''.join(substrings)
+
+
+# incremental serialisation
+
+cdef class xmlfile:
+    """xmlfile(self, output_file, encoding=None, compression=None, close=False, buffered=True)
+
+    A simple mechanism for incremental XML serialisation.
+
+    Usage example::
+
+         with xmlfile("somefile.xml", encoding='utf-8') as xf:
+             xf.write_declaration(standalone=True)
+             xf.write_doctype('<!DOCTYPE root SYSTEM "some.dtd">')
+
+             # generate an element (the root element)
+             with xf.element('root'):
+                  # write a complete Element into the open root element
+                  xf.write(etree.Element('test'))
+
+                  # generate and write more Elements, e.g. through iterparse
+                  for element in generate_some_elements():
+                      # serialise generated elements into the XML file
+                      xf.write(element)
+
+                  # or write multiple Elements or strings at once
+                  xf.write(etree.Element('start'), "text", etree.Element('end'))
+
+    If 'output_file' is a file(-like) object, passing ``close=True`` will
+    close it when exiting the context manager.  By default, it is left
+    to the owner to do that.  When a file path is used, lxml will take care
+    of opening and closing the file itself.  Also, when a compression level
+    is set, lxml will deliberately close the file to make sure all data gets
+    compressed and written.
+
+    Setting ``buffered=False`` will flush the output after each operation,
+    such as opening or closing an ``xf.element()`` block or calling
+    ``xf.write()``.  Alternatively, calling ``xf.flush()`` can be used to
+    explicitly flush any pending output when buffering is enabled.
+    """
+    cdef object output_file
+    cdef bytes encoding
+    cdef _IncrementalFileWriter writer
+    cdef _AsyncIncrementalFileWriter async_writer
+    cdef int compresslevel
+    cdef bint close
+    cdef bint buffered
+    cdef int method
+
+    def __init__(self, output_file not None, encoding=None, compression=None,
+                 close=False, buffered=True):
+        self.output_file = output_file
+        self.encoding = _utf8orNone(encoding)
+        self.compresslevel = compression or 0
+        self.close = close
+        self.buffered = buffered
+        self.method = OUTPUT_METHOD_XML
+
+    def __enter__(self):
+        assert self.output_file is not None
+        self.writer = _IncrementalFileWriter(
+            self.output_file, self.encoding, self.compresslevel,
+            self.close, self.buffered, self.method)
+        return self.writer
+
+    def __exit__(self, exc_type, exc_val, exc_tb):
+        if self.writer is not None:
+            old_writer, self.writer = self.writer, None
+            raise_on_error = exc_type is None
+            old_writer._close(raise_on_error)
+            if self.close:
+                self.output_file = None
+
+    async def __aenter__(self):
+        assert self.output_file is not None
+        if isinstance(self.output_file, basestring):
+            raise TypeError("Cannot asynchronously write to a plain file")
+        if not hasattr(self.output_file, 'write'):
+            raise TypeError("Output file needs an async .write() method")
+        self.async_writer = _AsyncIncrementalFileWriter(
+            self.output_file, self.encoding, self.compresslevel,
+            self.close, self.buffered, self.method)
+        return self.async_writer
+
+    async def __aexit__(self, exc_type, exc_val, exc_tb):
+        if self.async_writer is not None:
+            old_writer, self.async_writer = self.async_writer, None
+            raise_on_error = exc_type is None
+            await old_writer._close(raise_on_error)
+            if self.close:
+                self.output_file = None
+
+
+cdef class htmlfile(xmlfile):
+    """htmlfile(self, output_file, encoding=None, compression=None, close=False, buffered=True)
+
+    A simple mechanism for incremental HTML serialisation.  Works the same as
+    xmlfile.
+    """
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+        self.method = OUTPUT_METHOD_HTML
+
+
+cdef enum _IncrementalFileWriterStatus:
+    WRITER_STARTING = 0
+    WRITER_DECL_WRITTEN = 1
+    WRITER_DTD_WRITTEN = 2
+    WRITER_IN_ELEMENT = 3
+    WRITER_FINISHED = 4
+
+
+@cython.final
+@cython.internal
+cdef class _IncrementalFileWriter:
+    cdef tree.xmlOutputBuffer* _c_out
+    cdef bytes _encoding
+    cdef const_char* _c_encoding
+    cdef _FilelikeWriter _target
+    cdef list _element_stack
+    cdef int _status
+    cdef int _method
+    cdef bint _buffered
+
+    def __cinit__(self, outfile, bytes encoding, int compresslevel, bint close,
+                  bint buffered, int method):
+        self._status = WRITER_STARTING
+        self._element_stack = []
+        if encoding is None:
+            # We always need a document encoding to make the attribute serialisation
+            # of libxml2 identical to ours.
+            encoding = b'ASCII'
+        self._encoding = encoding
+        self._c_encoding = _cstr(encoding)
+        self._buffered = buffered
+        self._target = _create_output_buffer(
+            outfile, self._c_encoding, compresslevel, &self._c_out, close)
+        self._method = method
+
+    def __dealloc__(self):
+        if self._c_out is not NULL:
+            tree.xmlOutputBufferClose(self._c_out)
+
+    def write_declaration(self, version=None, standalone=None, doctype=None):
+        """write_declaration(self, version=None, standalone=None, doctype=None)
+
+        Write an XML declaration and (optionally) a doctype into the file.
+        """
+        assert self._c_out is not NULL
+        cdef const_xmlChar* c_version
+        cdef int c_standalone
+        if self._method != OUTPUT_METHOD_XML:
+            raise LxmlSyntaxError("only XML documents have declarations")
+        if self._status >= WRITER_DECL_WRITTEN:
+            raise LxmlSyntaxError("XML declaration already written")
+        version = _utf8orNone(version)
+        c_version = _xcstr(version) if version is not None else NULL
+        doctype = _utf8orNone(doctype)
+        if standalone is None:
+            c_standalone = -1
+        else:
+            c_standalone = 1 if standalone else 0
+        _writeDeclarationToBuffer(self._c_out, c_version, self._c_encoding, c_standalone)
+        if doctype is not None:
+            _writeDoctype(self._c_out, _xcstr(doctype))
+            self._status = WRITER_DTD_WRITTEN
+        else:
+            self._status = WRITER_DECL_WRITTEN
+        if not self._buffered:
+            tree.xmlOutputBufferFlush(self._c_out)
+        self._handle_error(self._c_out.error)
+
+    def write_doctype(self, doctype):
+        """write_doctype(self, doctype)
+
+        Writes the given doctype declaration verbatimly into the file.
+        """
+        assert self._c_out is not NULL
+        if doctype is None:
+            return
+        if self._status >= WRITER_DTD_WRITTEN:
+            raise LxmlSyntaxError("DOCTYPE already written or cannot write it here")
+        doctype = _utf8(doctype)
+        _writeDoctype(self._c_out, _xcstr(doctype))
+        self._status = WRITER_DTD_WRITTEN
+        if not self._buffered:
+            tree.xmlOutputBufferFlush(self._c_out)
+        self._handle_error(self._c_out.error)
+
+    def method(self, method):
+        """method(self, method)
+
+        Returns a context manager that overrides and restores the output method.
+        method is one of (None, 'xml', 'html') where None means 'xml'.
+        """
+        assert self._c_out is not NULL
+        c_method = self._method if method is None else _findOutputMethod(method)
+        return _MethodChanger(self, c_method)
+
+    def element(self, tag, attrib=None, nsmap=None, method=None, **_extra):
+        """element(self, tag, attrib=None, nsmap=None, method, **_extra)
+
+        Returns a context manager that writes an opening and closing tag.
+        method is one of (None, 'xml', 'html') where None means 'xml'.
+        """
+        assert self._c_out is not NULL
+        attributes = []
+        if attrib is not None:
+            for name, value in _iter_attrib(attrib):
+                if name not in _extra:
+                    ns, name = _getNsTag(name)
+                    attributes.append((ns, name, _utf8(value)))
+        if _extra:
+            for name, value in _extra.iteritems():
+                ns, name = _getNsTag(name)
+                attributes.append((ns, name, _utf8(value)))
+        reversed_nsmap = {}
+        if nsmap:
+            for prefix, ns in nsmap.items():
+                if prefix is not None:
+                    prefix = _utf8(prefix)
+                    _prefixValidOrRaise(prefix)
+                reversed_nsmap[_utf8(ns)] = prefix
+        ns, name = _getNsTag(tag)
+
+        c_method = self._method if method is None else _findOutputMethod(method)
+
+        return _FileWriterElement(self, (ns, name, attributes, reversed_nsmap), c_method)
+
+    cdef _write_qname(self, bytes name, bytes prefix):
+        if prefix:  # empty bytes for no prefix (not None to allow sorting)
+            tree.xmlOutputBufferWrite(self._c_out, len(prefix), _cstr(prefix))
+            tree.xmlOutputBufferWrite(self._c_out, 1, ':')
+        tree.xmlOutputBufferWrite(self._c_out, len(name), _cstr(name))
+
+    cdef _write_start_element(self, element_config):
+        if self._status > WRITER_IN_ELEMENT:
+            raise LxmlSyntaxError("cannot append trailing element to complete XML document")
+        ns, name, attributes, nsmap = element_config
+        flat_namespace_map, new_namespaces = self._collect_namespaces(nsmap)
+        prefix = self._find_prefix(ns, flat_namespace_map, new_namespaces)
+        tree.xmlOutputBufferWrite(self._c_out, 1, '<')
+        self._write_qname(name, prefix)
+
+        self._write_attributes_and_namespaces(
+            attributes, flat_namespace_map, new_namespaces)
+
+        tree.xmlOutputBufferWrite(self._c_out, 1, '>')
+        if not self._buffered:
+            tree.xmlOutputBufferFlush(self._c_out)
+        self._handle_error(self._c_out.error)
+
+        self._element_stack.append((ns, name, prefix, flat_namespace_map))
+        self._status = WRITER_IN_ELEMENT
+
+    cdef _write_attributes_and_namespaces(self, list attributes,
+                                          dict flat_namespace_map,
+                                          list new_namespaces):
+        if attributes:
+            # _find_prefix() may append to new_namespaces => build them first
+            attributes = [
+                (self._find_prefix(ns, flat_namespace_map, new_namespaces), name, value)
+                for ns, name, value in attributes ]
+        if new_namespaces:
+            new_namespaces.sort()
+            self._write_attributes_list(new_namespaces)
+        if attributes:
+            self._write_attributes_list(attributes)
+
+    cdef _write_attributes_list(self, list attributes):
+        for prefix, name, value in attributes:
+            tree.xmlOutputBufferWrite(self._c_out, 1, ' ')
+            self._write_qname(name, prefix)
+            tree.xmlOutputBufferWrite(self._c_out, 2, '="')
+            _write_attr_string(self._c_out, _cstr(value))
+
+            tree.xmlOutputBufferWrite(self._c_out, 1, '"')
+
+    cdef _write_end_element(self, element_config):
+        if self._status != WRITER_IN_ELEMENT:
+            raise LxmlSyntaxError("not in an element")
+        if not self._element_stack or self._element_stack[-1][:2] != element_config[:2]:
+            raise LxmlSyntaxError("inconsistent exit action in context manager")
+
+        # If previous write operations failed, the context manager exit might still call us.
+        # That is ok, but we stop writing closing tags and handling errors in that case.
+        # For all non-I/O errors, we continue writing closing tags if we can.
+        ok_to_write = self._c_out.error == xmlerror.XML_ERR_OK
+
+        name, prefix = self._element_stack.pop()[1:3]
+        if ok_to_write:
+            tree.xmlOutputBufferWrite(self._c_out, 2, '</')
+            self._write_qname(name, prefix)
+            tree.xmlOutputBufferWrite(self._c_out, 1, '>')
+
+        if not self._element_stack:
+            self._status = WRITER_FINISHED
+        if ok_to_write:
+            if not self._buffered:
+                tree.xmlOutputBufferFlush(self._c_out)
+            self._handle_error(self._c_out.error)
+
+    cdef _find_prefix(self, bytes href, dict flat_namespaces_map, list new_namespaces):
+        if href is None:
+            return None
+        if href in flat_namespaces_map:
+            return flat_namespaces_map[href]
+        # need to create a new prefix
+        prefixes = flat_namespaces_map.values()
+        i = 0
+        while True:
+            prefix = _utf8('ns%d' % i)
+            if prefix not in prefixes:
+                new_namespaces.append((b'xmlns', prefix, href))
+                flat_namespaces_map[href] = prefix
+                return prefix
+            i += 1
+
+    cdef _collect_namespaces(self, dict nsmap):
+        new_namespaces = []
+        flat_namespaces_map = {}
+        for ns, prefix in nsmap.iteritems():
+            flat_namespaces_map[ns] = prefix
+            if prefix is None:
+                # use empty bytes rather than None to allow sorting
+                new_namespaces.append((b'', b'xmlns', ns))
+            else:
+                new_namespaces.append((b'xmlns', prefix, ns))
+        # merge in flat namespace map of parent
+        if self._element_stack:
+            for ns, prefix in (<dict>self._element_stack[-1][-1]).iteritems():
+                if flat_namespaces_map.get(ns) is None:
+                    # unknown or empty prefix => prefer a 'real' prefix
+                    flat_namespaces_map[ns] = prefix
+        return flat_namespaces_map, new_namespaces
+
+    def write(self, *args, bint with_tail=True, bint pretty_print=False, method=None):
+        """write(self, *args, with_tail=True, pretty_print=False, method=None)
+
+        Write subtrees or strings into the file.
+
+        If method is not None, it should be one of ('html', 'xml', 'text')
+        to temporarily override the output method.
+        """
+        assert self._c_out is not NULL
+        c_method = self._method if method is None else _findOutputMethod(method)
+
+        for content in args:
+            if _isString(content):
+                if self._status != WRITER_IN_ELEMENT:
+                    if self._status > WRITER_IN_ELEMENT or content.strip():
+                        raise LxmlSyntaxError("not in an element")
+                bstring = _utf8(content)
+                if not bstring:
+                    continue
+
+                ns, name, _, _ = self._element_stack[-1]
+                if (c_method == OUTPUT_METHOD_HTML and
+                        ns in (None, b'http://www.w3.org/1999/xhtml') and
+                        name in (b'script', b'style')):
+                    tree.xmlOutputBufferWrite(self._c_out, len(bstring), _cstr(bstring))
+
+                else:
+                    tree.xmlOutputBufferWriteEscape(self._c_out, _xcstr(bstring), NULL)
+
+            elif isinstance(content, CDATA):
+                if self._status > WRITER_IN_ELEMENT:
+                    raise LxmlSyntaxError("not in an element")
+                _write_cdata_string(self._c_out, (<CDATA>content)._utf8_data)
+
+            elif iselement(content):
+                if self._status > WRITER_IN_ELEMENT:
+                    raise LxmlSyntaxError("cannot append trailing element to complete XML document")
+                _writeNodeToBuffer(self._c_out, (<_Element>content)._c_node,
+                                   self._c_encoding, NULL, c_method,
+                                   False, False, pretty_print, with_tail, False)
+                if (<_Element>content)._c_node.type == tree.XML_ELEMENT_NODE:
+                    if not self._element_stack:
+                        self._status = WRITER_FINISHED
+
+            elif content is not None:
+                raise TypeError(
+                    f"got invalid input value of type {type(content)}, expected string, CDATA or Element")
+
+            self._handle_error(self._c_out.error)
+
+        if not self._buffered:
+            tree.xmlOutputBufferFlush(self._c_out)
+            self._handle_error(self._c_out.error)
+
+    def flush(self):
+        """flush(self)
+
+        Write any pending content of the current output buffer to the stream.
+        """
+        assert self._c_out is not NULL
+        tree.xmlOutputBufferFlush(self._c_out)
+        self._handle_error(self._c_out.error)
+
+    cdef _close(self, bint raise_on_error):
+        if raise_on_error:
+            if self._status < WRITER_IN_ELEMENT:
+                raise LxmlSyntaxError("no content written")
+            if self._element_stack:
+                raise LxmlSyntaxError("pending open tags on close")
+        error_result = self._c_out.error
+        if error_result == xmlerror.XML_ERR_OK:
+            error_result = tree.xmlOutputBufferClose(self._c_out)
+            if error_result != -1:
+                error_result = xmlerror.XML_ERR_OK
+        else:
+            tree.xmlOutputBufferClose(self._c_out)
+        self._status = WRITER_FINISHED
+        self._c_out = NULL
+        del self._element_stack[:]
+        if raise_on_error:
+            self._handle_error(error_result)
+
+    cdef _handle_error(self, int error_result):
+        if error_result != xmlerror.XML_ERR_OK:
+            if self._target is not None:
+                self._target._exc_context._raise_if_stored()
+            _raiseSerialisationError(error_result)
+
+
+@cython.final
+@cython.internal
+cdef class _AsyncDataWriter:
+    cdef list _data
+    def __cinit__(self):
+        self._data = []
+
+    cdef bytes collect(self):
+        data = b''.join(self._data)
+        del self._data[:]
+        return data
+
+    def write(self, data):
+        self._data.append(data)
+
+    def close(self):
+        pass
+
+
+@cython.final
+@cython.internal
+cdef class _AsyncIncrementalFileWriter:
+    cdef _IncrementalFileWriter _writer
+    cdef _AsyncDataWriter _buffer
+    cdef object _async_outfile
+    cdef int _flush_after_writes
+    cdef bint _should_close
+    cdef bint _buffered
+
+    def __cinit__(self, async_outfile, bytes encoding, int compresslevel, bint close,
+                  bint buffered, int method):
+        self._flush_after_writes = 20
+        self._async_outfile = async_outfile
+        self._should_close = close
+        self._buffered = buffered
+        self._buffer = _AsyncDataWriter()
+        self._writer = _IncrementalFileWriter(
+            self._buffer, encoding, compresslevel, close=True, buffered=False, method=method)
+
+    cdef bytes _flush(self):
+        if not self._buffered or len(self._buffer._data) > self._flush_after_writes:
+            return self._buffer.collect()
+        return None
+
+    async def flush(self):
+        self._writer.flush()
+        data = self._buffer.collect()
+        if data:
+            await self._async_outfile.write(data)
+
+    async def write_declaration(self, version=None, standalone=None, doctype=None):
+        self._writer.write_declaration(version, standalone, doctype)
+        data = self._flush()
+        if data:
+            await self._async_outfile.write(data)
+
+    async def write_doctype(self, doctype):
+        self._writer.write_doctype(doctype)
+        data = self._flush()
+        if data:
+            await self._async_outfile.write(data)
+
+    async def write(self, *args, with_tail=True, pretty_print=False, method=None):
+        self._writer.write(*args, with_tail=with_tail, pretty_print=pretty_print, method=method)
+        data = self._flush()
+        if data:
+            await self._async_outfile.write(data)
+
+    def method(self, method):
+        return self._writer.method(method)
+
+    def element(self, tag, attrib=None, nsmap=None, method=None, **_extra):
+        element_writer = self._writer.element(tag, attrib, nsmap, method, **_extra)
+        return _AsyncFileWriterElement(element_writer, self)
+
+    async def _close(self, bint raise_on_error):
+        self._writer._close(raise_on_error)
+        data = self._buffer.collect()
+        if data:
+            await self._async_outfile.write(data)
+        if self._should_close:
+            await self._async_outfile.close()
+
+
+@cython.final
+@cython.internal
+cdef class _AsyncFileWriterElement:
+    cdef _FileWriterElement _element_writer
+    cdef _AsyncIncrementalFileWriter _writer
+
+    def __cinit__(self, _FileWriterElement element_writer not None,
+                  _AsyncIncrementalFileWriter writer not None):
+        self._element_writer = element_writer
+        self._writer = writer
+
+    async def __aenter__(self):
+        self._element_writer.__enter__()
+        data = self._writer._flush()
+        if data:
+            await self._writer._async_outfile.write(data)
+
+    async def __aexit__(self, *args):
+        self._element_writer.__exit__(*args)
+        data = self._writer._flush()
+        if data:
+            await self._writer._async_outfile.write(data)
+
+
+@cython.final
+@cython.internal
+@cython.freelist(8)
+cdef class _FileWriterElement:
+    cdef _IncrementalFileWriter _writer
+    cdef object _element
+    cdef int _new_method
+    cdef int _old_method
+
+    def __cinit__(self, _IncrementalFileWriter writer not None, element_config, int method):
+        self._writer = writer
+        self._element = element_config
+        self._new_method = method
+        self._old_method = writer._method
+
+    def __enter__(self):
+        self._writer._method = self._new_method
+        self._writer._write_start_element(self._element)
+
+    def __exit__(self, exc_type, exc_val, exc_tb):
+        self._writer._write_end_element(self._element)
+        self._writer._method = self._old_method
+
+
+@cython.final
+@cython.internal
+@cython.freelist(8)
+cdef class _MethodChanger:
+    cdef _IncrementalFileWriter _writer
+    cdef int _new_method
+    cdef int _old_method
+    cdef bint _entered
+    cdef bint _exited
+
+    def __cinit__(self, _IncrementalFileWriter writer not None, int method):
+        self._writer = writer
+        self._new_method = method
+        self._old_method = writer._method
+        self._entered = False
+        self._exited = False
+
+    def __enter__(self):
+        if self._entered:
+            raise LxmlSyntaxError("Inconsistent enter action in context manager")
+        self._writer._method = self._new_method
+        self._entered = True
+
+    def __exit__(self, exc_type, exc_val, exc_tb):
+        if self._exited:
+            raise LxmlSyntaxError("Inconsistent exit action in context manager")
+        if self._writer._method != self._new_method:
+            raise LxmlSyntaxError("Method changed outside of context manager")
+        self._writer._method = self._old_method
+        self._exited = True
+
+    async def __aenter__(self):
+        # for your async convenience
+        return self.__enter__()
+
+    async def __aexit__(self, *args):
+        # for your async convenience
+        return self.__exit__(*args)