xmllint"> ]> xmllint 2001 2004 John Fleck

jfleck@inkstain.net

Ziying Sherwin

sherwin@nlm.nih.gov

Heiko Rupp

hwr@pilhuhn.de

xmllint 1 xmllint command line XML tool xmllint --version --debug --quiet --shell --xpath "XPath_expression" --copy --recover --huge --nocompact --nodefdtd --nodict --noenc --noent --nofixup-base-uris --noout --nonet --path "PATH(S)" --load-trace --valid --postvalid --dtdvalid URL --dtdvalidfpi FPI --timing --output FILE --repeat --insert --strict-namespace --compress --html --xmlout --push --memory --max-ampl INTEGER --maxmem NBBYTES --nowarning --noblanks --nocdata --format --pretty INTEGER --encode ENCODING --dropdtd --nsclean --catalogs --nocatalogs --auto --xinclude --noxincludenode --loaddtd --dtdattr --stream --walker --pattern PATTERNVALUE --relaxng SCHEMA --schema SCHEMA --schematron SCHEMA --c14n --c14n11 --exc-c14n --pedantic --sax --sax1 --oldxml10 XML-FILE(S) - The &xmllint; program parses one or more XML files, specified on the command line as XML-FILE (or the standard input if the filename provided is - ). It prints various types of output, depending upon the options selected. It is useful for detecting errors both in XML code and in the XML parser itself. &xmllint; is part of the libxml2 library. Options enabling validation. --dtdvalid URL Use the DTD specified by an URL for validation. --dtdvalidfpi FPI Use the DTD specified by a Formal Public Identifier FPI for validation, note that this will require a catalog exporting that Formal Public Identifier to work. --relaxng SCHEMA Use RelaxNG file named SCHEMA for validation. --schema SCHEMA Use a W3C XML Schema file named SCHEMA for validation. --schematron SCHEMA Use a Schematron file named SCHEMA for validation. --valid Determine if the document is a valid instance of the included Document Type Definition (DTD). A DTD to be validated against also can be specified at the command line using the --dtdvalid option. By default, &xmllint; also checks to determine if the document is well-formed. --strict-namespace Return an error if the document is well-formed, but has namespace errors. This enforces namespace-well-formedness. The following options set the respective parser options. --dtdattr Fetch external DTD and populate the tree with inherited attributes. Implies --loaddtd. --huge Ignore some hardcoded parser limits. --loaddtd Fetch an external DTD and external parameter entities. --max-ampl INTEGER Set the maximum amplification factor which protects against exponential entity expansion ("billion laughs"). The default value is 5. Documents making heavy use of entity expansion may require a higher value. --noblanks Drop "ignorable" blank spaces. This option is unreliable and shouldn't be used. --nocatalogs Do not use any catalogs. --nocdata Substitute CDATA section by equivalent text nodes. --nodefdtd Do not set default HTML doctype (parser option HTML_PARSE_NODEFDTD). --noenc Ignore encoding declaration (parser option XML_PARSE_IGNORE_ENC). --noent Substitute entity values for entity references. By default, &xmllint; leaves entity references in place. This enables loading of external DTDs and entities. --nofixup-base-uris Don't fix xml:base URIs when processing XIncludes (parser option XML_PARSE_NOBASEFIX). --nonet Do not use the Internet to fetch DTDs or entities. Has no effect with libxml2 2.15 or later. --nowarning Do not emit warnings from the parser and/or validator. --nsclean Remove redundant namespace declarations. --oldxml10 Use deprecated parsing rules before XML 1.0, 5th edition. --pedantic Enable additional warnings. --recover Output any parsable portions of an invalid document. Exact behavior is unspecified. Use of this option is discouraged. --xinclude Do XInclude processing. Options that don't fall in another category. --catalogs Use the SGML catalog(s) from SGML_CATALOG_FILES. XML catalogs are loaded by default. --dropdtd Remove DTD after parsing. --html Use the HTML parser. --path "PATH(S)" Use the (space- or colon-separated) list of filesystem paths specified by PATHS to load DTDs or entities. Enclose space-separated lists by quotation marks. --quiet Don't print informational messages to stderr. --sax Print SAX callbacks for debugging. Can be used for streaming DTD and Schema validation when used with --noout. --shell Run a navigating shell. Details on available commands in shell mode are below (see ). --stream Use streaming API - useful when used in combination with --relaxng or --valid options for validation of files that are too large to be held in memory. --version Display the version of libxml2 used. Options controlling output. Except for --noout these have no effect in SAX or stream mode. --compress Turn on gzip 1 compression of output. --c14n --c14n11 --exc-c14n Use the W3C XML Canonicalisation (C14N) to serialize the result of parsing to stdout. It keeps comments in the result. --encode ENCODING Output in the given encoding. Note that this works for full document not fragments or result from XPath queries. --format Reformat and reindent the output. The XMLLINT_INDENT environment variable controls the indentation. The default value is two spaces " "). Especially in the absence of a DTD, this feature has never worked reliably and is fundamentally broken. --noout Suppress output. By default, &xmllint; outputs the result tree. --output FILE Define a file path where &xmllint; will save the result of parsing. Usually the programs build a tree and save it on stdout, with this option the result XML instance will be saved onto a file. --pretty INTEGER Value 0 means no formatting, 1 means XML_SAVE_FORMAT (same as --format), 2 means XML_SAVE_WSNONSIG. --xmlout Used in conjunction with --html. Usually when HTML is parsed the document is saved with the HTML serializer. But with this option the resulting document is saved with the XML serializer. This is primarily used to generate XHTML from HTML input. The following options can be used to debug the libxml2 library. Behavior of these options may change without notice. --auto Generate a small document for testing purposes. --copy Test the internal copy implementation. --debug Parse a file and output an annotated tree of the in-memory version of the document. --insert Test for valid insertions. DEPRECATED: This feature will be removed. --load-trace Display all the documents loaded during the processing to stderr. --maxmem NNBYTES Test the parser memory support. NNBYTES is the maximum number of bytes the library is allowed to allocate. This can also be used to make sure batch processing of XML files will not exhaust the virtual memory of the server running them. --memory Parse from memory. --nocompact Do not generate compact text nodes (parser option XML_PARSE_COMPACT). Only for debugging. --nodict Don't use dictionaries (parser option XML_PARSE_NODICT). Only for debugging. --noxincludenode Do XInclude processing but do not generate XInclude start and end nodes. --pattern PATTERNVALUE Used to exercise the pattern recognition engine, which can be used with the reader interface to the parser. It allows to select some nodes in the document based on an XPath (subset) expression. Used for debugging. --postvalid Validate after parsing has completed. --push Use the push mode of the parser. --repeat Repeat 100 times, for timing or profiling. --sax1 Use deprecated SAX1 interface (only for debugging). --timing Output information about the time it takes &xmllint; to perform the various steps. --walker Test the walker module, which is a reader interface but for a document tree, instead of using the reader API on an unparsed document it works on an existing in-memory tree. Used for debugging. --xpath "XPath_expression" Run an XPath expression given as argument and print the result. In case of a nodeset result, each node in the node set is serialized in full in the output. In case of an empty node set the "XPath set is empty" result will be shown and exit code 11 will be returned.. &xmllint; offers an interactive shell mode invoked with the --shell command. Available commands in shell mode include (in alphabetical order): base Display XML base of the node. bye Leave the shell. cat NODE Display the given node or the current one. cd PATH Change the current node to the given path (if unique) or root if no argument is given. dir PATH Dumps information about the node (namespace, attributes, content). du PATH Show the structure of the subtree under the given path or the current node. exit Leave the shell. help Show this help. load FILENAME Load a new document with the given filename. ls PATH List contents of the given path or the current directory. pwd Display the path to the current node. quit Leave the shell. save FILENAME Save the current document to the given filename or to the original name. validate Check the document for errors. write FILENAME Write the current node to the given filename. SGML_CATALOG_FILES SGML catalog behavior can be changed by redirecting queries to the user's own set of catalogs. This can be done by setting the SGML_CATALOG_FILES environment variable to a list of catalogs. An empty one should deactivate loading the default catalog. XML_CATALOG_FILES XML catalog behavior can be changed by redirecting queries to the user's own set of catalogs. This can be done by setting the XML_CATALOG_FILES environment variable to a space-separated list of catalogs. Use percent-encoding to escape spaces or other characters. An empty variable should deactivate loading the default catalog. XML_DEBUG_CATALOG Setting the environment variable XML_DEBUG_CATALOG to non-zero using the export command outputs debugging information related to catalog operations. XMLLINT_INDENT Setting the environment variable XMLLINT_INDENT controls the indentation. The default value is two spaces " ". &xmllint; return codes provide information that can be used when calling it from scripts. 0 No error 1 Unclassified 2 Error in DTD 3 Validation error 4 Document isn't well-formed or couldn't be read 5 Error in schema compilation 6 Error writing output 7 Error in pattern (generated when --pattern option is used) 9 Out of memory error 10 XPath evaluation error 11 XPath result is empty More information can be found in the libxml2 repo at