Delete zipfile.py

zipfile.py

@@ -1,1966 +0,0 @@
-"""
-Read and write ZIP files.
-
-XXX references to utf-8 need further investigation.
-"""
-import io
-import os
-import re
-import importlib.util
-import sys
-import time
-import stat
-import shutil
-import struct
-import binascii
-
-try:
-    import threading
-except ImportError:
-    import dummy_threading as threading
-
-try:
-    import zlib # We may need its compression method
-    crc32 = zlib.crc32
-except ImportError:
-    zlib = None
-    crc32 = binascii.crc32
-
-try:
-    import bz2 # We may need its compression method
-except ImportError:
-    bz2 = None
-
-try:
-    import lzma # We may need its compression method
-except ImportError:
-    lzma = None
-
-__all__ = ["BadZipFile", "BadZipfile", "error",
-           "ZIP_STORED", "ZIP_DEFLATED", "ZIP_BZIP2", "ZIP_LZMA",
-           "is_zipfile", "ZipInfo", "ZipFile", "PyZipFile", "LargeZipFile"]
-
-class BadZipFile(Exception):
-    pass
-
-
-class LargeZipFile(Exception):
-    """
-    Raised when writing a zipfile, the zipfile requires ZIP64 extensions
-    and those extensions are disabled.
-    """
-
-error = BadZipfile = BadZipFile      # Pre-3.2 compatibility names
-
-
-ZIP64_LIMIT = (1 << 31) - 1
-ZIP_FILECOUNT_LIMIT = (1 << 16) - 1
-ZIP_MAX_COMMENT = (1 << 16) - 1
-
-# constants for Zip file compression methods
-ZIP_STORED = 0
-ZIP_DEFLATED = 8
-ZIP_BZIP2 = 12
-ZIP_LZMA = 14
-# Other ZIP compression methods not supported
-
-DEFAULT_VERSION = 20
-ZIP64_VERSION = 45
-BZIP2_VERSION = 46
-LZMA_VERSION = 63
-# we recognize (but not necessarily support) all features up to that version
-MAX_EXTRACT_VERSION = 63
-
-# Below are some formats and associated data for reading/writing headers using
-# the struct module.  The names and structures of headers/records are those used
-# in the PKWARE description of the ZIP file format:
-#     http://www.pkware.com/documents/casestudies/APPNOTE.TXT
-# (URL valid as of January 2008)
-
-# The "end of central directory" structure, magic number, size, and indices
-# (section V.I in the format document)
-structEndArchive = b"<4s4H2LH"
-stringEndArchive = b"PK\005\006"
-sizeEndCentDir = struct.calcsize(structEndArchive)
-
-_ECD_SIGNATURE = 0
-_ECD_DISK_NUMBER = 1
-_ECD_DISK_START = 2
-_ECD_ENTRIES_THIS_DISK = 3
-_ECD_ENTRIES_TOTAL = 4
-_ECD_SIZE = 5
-_ECD_OFFSET = 6
-_ECD_COMMENT_SIZE = 7
-# These last two indices are not part of the structure as defined in the
-# spec, but they are used internally by this module as a convenience
-_ECD_COMMENT = 8
-_ECD_LOCATION = 9
-
-# The "central directory" structure, magic number, size, and indices
-# of entries in the structure (section V.F in the format document)
-structCentralDir = "<4s4B4HL2L5H2L"
-stringCentralDir = b"PK\001\002"
-sizeCentralDir = struct.calcsize(structCentralDir)
-
-# indexes of entries in the central directory structure
-_CD_SIGNATURE = 0
-_CD_CREATE_VERSION = 1
-_CD_CREATE_SYSTEM = 2
-_CD_EXTRACT_VERSION = 3
-_CD_EXTRACT_SYSTEM = 4
-_CD_FLAG_BITS = 5
-_CD_COMPRESS_TYPE = 6
-_CD_TIME = 7
-_CD_DATE = 8
-_CD_CRC = 9
-_CD_COMPRESSED_SIZE = 10
-_CD_UNCOMPRESSED_SIZE = 11
-_CD_FILENAME_LENGTH = 12
-_CD_EXTRA_FIELD_LENGTH = 13
-_CD_COMMENT_LENGTH = 14
-_CD_DISK_NUMBER_START = 15
-_CD_INTERNAL_FILE_ATTRIBUTES = 16
-_CD_EXTERNAL_FILE_ATTRIBUTES = 17
-_CD_LOCAL_HEADER_OFFSET = 18
-
-# The "local file header" structure, magic number, size, and indices
-# (section V.A in the format document)
-structFileHeader = "<4s2B4HL2L2H"
-stringFileHeader = b"PK\003\004"
-sizeFileHeader = struct.calcsize(structFileHeader)
-
-_FH_SIGNATURE = 0
-_FH_EXTRACT_VERSION = 1
-_FH_EXTRACT_SYSTEM = 2
-_FH_GENERAL_PURPOSE_FLAG_BITS = 3
-_FH_COMPRESSION_METHOD = 4
-_FH_LAST_MOD_TIME = 5
-_FH_LAST_MOD_DATE = 6
-_FH_CRC = 7
-_FH_COMPRESSED_SIZE = 8
-_FH_UNCOMPRESSED_SIZE = 9
-_FH_FILENAME_LENGTH = 10
-_FH_EXTRA_FIELD_LENGTH = 11
-
-# The "Zip64 end of central directory locator" structure, magic number, and size
-structEndArchive64Locator = "<4sLQL"
-stringEndArchive64Locator = b"PK\x06\x07"
-sizeEndCentDir64Locator = struct.calcsize(structEndArchive64Locator)
-
-# The "Zip64 end of central directory" record, magic number, size, and indices
-# (section V.G in the format document)
-structEndArchive64 = "<4sQ2H2L4Q"
-stringEndArchive64 = b"PK\x06\x06"
-sizeEndCentDir64 = struct.calcsize(structEndArchive64)
-
-_CD64_SIGNATURE = 0
-_CD64_DIRECTORY_RECSIZE = 1
-_CD64_CREATE_VERSION = 2
-_CD64_EXTRACT_VERSION = 3
-_CD64_DISK_NUMBER = 4
-_CD64_DISK_NUMBER_START = 5
-_CD64_NUMBER_ENTRIES_THIS_DISK = 6
-_CD64_NUMBER_ENTRIES_TOTAL = 7
-_CD64_DIRECTORY_SIZE = 8
-_CD64_OFFSET_START_CENTDIR = 9
-
-def _check_zipfile(fp):
-    try:
-        if _EndRecData(fp):
-            return True         # file has correct magic number
-    except OSError:
-        pass
-    return False
-
-def is_zipfile(filename):
-    """Quickly see if a file is a ZIP file by checking the magic number.
-
-    The filename argument may be a file or file-like object too.
-    """
-    result = False
-    try:
-        if hasattr(filename, "read"):
-            result = _check_zipfile(fp=filename)
-        else:
-            with open(filename, "rb") as fp:
-                result = _check_zipfile(fp)
-    except OSError:
-        pass
-    return result
-
-def _EndRecData64(fpin, offset, endrec):
-    """
-    Read the ZIP64 end-of-archive records and use that to update endrec
-    """
-    try:
-        fpin.seek(offset - sizeEndCentDir64Locator, 2)
-    except OSError:
-        # If the seek fails, the file is not large enough to contain a ZIP64
-        # end-of-archive record, so just return the end record we were given.
-        return endrec
-
-    data = fpin.read(sizeEndCentDir64Locator)
-    if len(data) != sizeEndCentDir64Locator:
-        return endrec
-    sig, diskno, reloff, disks = struct.unpack(structEndArchive64Locator, data)
-    if sig != stringEndArchive64Locator:
-        return endrec
-
-    if diskno != 0 or disks != 1:
-        raise BadZipFile("zipfiles that span multiple disks are not supported")
-
-    # Assume no 'zip64 extensible data'
-    fpin.seek(offset - sizeEndCentDir64Locator - sizeEndCentDir64, 2)
-    data = fpin.read(sizeEndCentDir64)
-    if len(data) != sizeEndCentDir64:
-        return endrec
-    sig, sz, create_version, read_version, disk_num, disk_dir, \
-        dircount, dircount2, dirsize, diroffset = \
-        struct.unpack(structEndArchive64, data)
-    if sig != stringEndArchive64:
-        return endrec
-
-    # Update the original endrec using data from the ZIP64 record
-    endrec[_ECD_SIGNATURE] = sig
-    endrec[_ECD_DISK_NUMBER] = disk_num
-    endrec[_ECD_DISK_START] = disk_dir
-    endrec[_ECD_ENTRIES_THIS_DISK] = dircount
-    endrec[_ECD_ENTRIES_TOTAL] = dircount2
-    endrec[_ECD_SIZE] = dirsize
-    endrec[_ECD_OFFSET] = diroffset
-    return endrec
-
-
-def _EndRecData(fpin):
-    """Return data from the "End of Central Directory" record, or None.
-
-    The data is a list of the nine items in the ZIP "End of central dir"
-    record followed by a tenth item, the file seek offset of this record."""
-
-    # Determine file size
-    fpin.seek(0, 2)
-    filesize = fpin.tell()
-
-    # Check to see if this is ZIP file with no archive comment (the
-    # "end of central directory" structure should be the last item in the
-    # file if this is the case).
-    try:
-        fpin.seek(-sizeEndCentDir, 2)
-    except OSError:
-        return None
-    data = fpin.read()
-    if (len(data) == sizeEndCentDir and
-            data[0:4] == stringEndArchive and
-            data[-2:] == b"\000\000"):
-        # the signature is correct and there's no comment, unpack structure
-        endrec = struct.unpack(structEndArchive, data)
-        endrec=list(endrec)
-
-        # Append a blank comment and record start offset
-        endrec.append(b"")
-        endrec.append(filesize - sizeEndCentDir)
-
-        # Try to read the "Zip64 end of central directory" structure
-        return _EndRecData64(fpin, -sizeEndCentDir, endrec)
-
-    # Either this is not a ZIP file, or it is a ZIP file with an archive
-    # comment.  Search the end of the file for the "end of central directory"
-    # record signature. The comment is the last item in the ZIP file and may be
-    # up to 64K long.  It is assumed that the "end of central directory" magic
-    # number does not appear in the comment.
-    maxCommentStart = max(filesize - (1 << 16) - sizeEndCentDir, 0)
-    fpin.seek(maxCommentStart, 0)
-    data = fpin.read()
-    start = data.rfind(stringEndArchive)
-    if start >= 0:
-        # found the magic number; attempt to unpack and interpret
-        recData = data[start:start+sizeEndCentDir]
-        if len(recData) != sizeEndCentDir:
-            # Zip file is corrupted.
-            return None
-        endrec = list(struct.unpack(structEndArchive, recData))
-        commentSize = endrec[_ECD_COMMENT_SIZE] #as claimed by the zip file
-        comment = data[start+sizeEndCentDir:start+sizeEndCentDir+commentSize]
-        endrec.append(comment)
-        endrec.append(maxCommentStart + start)
-
-        # Try to read the "Zip64 end of central directory" structure
-        return _EndRecData64(fpin, maxCommentStart + start - filesize,
-                             endrec)
-
-    # Unable to find a valid end of central directory structure
-    return None
-
-
-class ZipInfo (object):
-    """Class with attributes describing each file in the ZIP archive."""
-
-    __slots__ = (
-        'orig_filename',
-        'filename',
-        'date_time',
-        'compress_type',
-        'comment',
-        'extra',
-        'create_system',
-        'create_version',
-        'extract_version',
-        'reserved',
-        'flag_bits',
-        'volume',
-        'internal_attr',
-        'external_attr',
-        'header_offset',
-        'CRC',
-        'compress_size',
-        'file_size',
-        '_raw_time',
-    )
-
-    def __init__(self, filename="NoName", date_time=(1980,1,1,0,0,0)):
-        self.orig_filename = filename   # Original file name in archive
-
-        # Terminate the file name at the first null byte.  Null bytes in file
-        # names are used as tricks by viruses in archives.
-        null_byte = filename.find(chr(0))
-        if null_byte >= 0:
-            filename = filename[0:null_byte]
-        # This is used to ensure paths in generated ZIP files always use
-        # forward slashes as the directory separator, as required by the
-        # ZIP format specification.
-        if os.sep != "/" and os.sep in filename:
-            filename = filename.replace(os.sep, "/")
-
-        self.filename = filename        # Normalized file name
-        self.date_time = date_time      # year, month, day, hour, min, sec
-
-        if date_time[0] < 1980:
-            raise ValueError('ZIP does not support timestamps before 1980')
-
-        # Standard values:
-        self.compress_type = ZIP_STORED # Type of compression for the file
-        self.comment = b""              # Comment for each file
-        self.extra = b""                # ZIP extra data
-        if sys.platform == 'win32':
-            self.create_system = 0          # System which created ZIP archive
-        else:
-            # Assume everything else is unix-y
-            self.create_system = 3          # System which created ZIP archive
-        self.create_version = DEFAULT_VERSION  # Version which created ZIP archive
-        self.extract_version = DEFAULT_VERSION # Version needed to extract archive
-        self.reserved = 0               # Must be zero
-        self.flag_bits = 0              # ZIP flag bits
-        self.volume = 0                 # Volume number of file header
-        self.internal_attr = 0          # Internal attributes
-        self.external_attr = 0          # External file attributes
-        # Other attributes are set by class ZipFile:
-        # header_offset         Byte offset to the file header
-        # CRC                   CRC-32 of the uncompressed file
-        # compress_size         Size of the compressed file
-        # file_size             Size of the uncompressed file
-
-    def __repr__(self):
-        result = ['<%s filename=%r' % (self.__class__.__name__, self.filename)]
-        if self.compress_type != ZIP_STORED:
-            result.append(' compress_type=%s' %
-                          compressor_names.get(self.compress_type,
-                                               self.compress_type))
-        hi = self.external_attr >> 16
-        lo = self.external_attr & 0xFFFF
-        if hi:
-            result.append(' filemode=%r' % stat.filemode(hi))
-        if lo:
-            result.append(' external_attr=%#x' % lo)
-        isdir = self.filename[-1:] == '/'
-        if not isdir or self.file_size:
-            result.append(' file_size=%r' % self.file_size)
-        if ((not isdir or self.compress_size) and
-                (self.compress_type != ZIP_STORED or
-                 self.file_size != self.compress_size)):
-            result.append(' compress_size=%r' % self.compress_size)
-        result.append('>')
-        return ''.join(result)
-
-    def FileHeader(self, zip64=None):
-        """Return the per-file header as a string."""
-        dt = self.date_time
-        dosdate = (dt[0] - 1980) << 9 | dt[1] << 5 | dt[2]
-        dostime = dt[3] << 11 | dt[4] << 5 | (dt[5] // 2)
-        if self.flag_bits & 0x08:
-            # Set these to zero because we write them after the file data
-            CRC = compress_size = file_size = 0
-        else:
-            CRC = self.CRC
-            compress_size = self.compress_size
-            file_size = self.file_size
-
-        extra = self.extra
-
-        min_version = 0
-        if zip64 is None:
-            zip64 = file_size > ZIP64_LIMIT or compress_size > ZIP64_LIMIT
-        if zip64:
-            fmt = '<HHQQ'
-            extra = extra + struct.pack(fmt,
-                                        1, struct.calcsize(fmt)-4, file_size, compress_size)
-        if file_size > ZIP64_LIMIT or compress_size > ZIP64_LIMIT:
-            if not zip64:
-                raise LargeZipFile("Filesize would require ZIP64 extensions")
-            # File is larger than what fits into a 4 byte integer,
-            # fall back to the ZIP64 extension
-            file_size = 0xffffffff
-            compress_size = 0xffffffff
-            min_version = ZIP64_VERSION
-
-        if self.compress_type == ZIP_BZIP2:
-            min_version = max(BZIP2_VERSION, min_version)
-        elif self.compress_type == ZIP_LZMA:
-            min_version = max(LZMA_VERSION, min_version)
-
-        self.extract_version = max(min_version, self.extract_version)
-        self.create_version = max(min_version, self.create_version)
-        filename, flag_bits = self._encodeFilenameFlags()
-        header = struct.pack(structFileHeader, stringFileHeader,
-                             self.extract_version, self.reserved, flag_bits,
-                             self.compress_type, dostime, dosdate, CRC,
-                             compress_size, file_size,
-                             len(filename), len(extra))
-        return header + filename + extra
-
-    def _encodeFilenameFlags(self):
-        try:
-            return self.filename.encode('ascii'), self.flag_bits
-        except UnicodeEncodeError:
-            return self.filename.encode('utf-8'), self.flag_bits | 0x800
-
-    def _decodeExtra(self):
-        # Try to decode the extra field.
-        extra = self.extra
-        unpack = struct.unpack
-        while len(extra) >= 4:
-            tp, ln = unpack('<HH', extra[:4])
-            if tp == 1:
-                if ln >= 24:
-                    counts = unpack('<QQQ', extra[4:28])
-                elif ln == 16:
-                    counts = unpack('<QQ', extra[4:20])
-                elif ln == 8:
-                    counts = unpack('<Q', extra[4:12])
-                elif ln == 0:
-                    counts = ()
-                else:
-                    raise RuntimeError("Corrupt extra field %s"%(ln,))
-
-                idx = 0
-
-                # ZIP64 extension (large files and/or large archives)
-                if self.file_size in (0xffffffffffffffff, 0xffffffff):
-                    self.file_size = counts[idx]
-                    idx += 1
-
-                if self.compress_size == 0xFFFFFFFF:
-                    self.compress_size = counts[idx]
-                    idx += 1
-
-                if self.header_offset == 0xffffffff:
-                    old = self.header_offset
-                    self.header_offset = counts[idx]
-                    idx+=1
-
-            extra = extra[ln+4:]
-
-
-class _ZipDecrypter:
-    """Class to handle decryption of files stored within a ZIP archive.
-
-    ZIP supports a password-based form of encryption. Even though known
-    plaintext attacks have been found against it, it is still useful
-    to be able to get data out of such a file.
-
-    Usage:
-        zd = _ZipDecrypter(mypwd)
-        plain_char = zd(cypher_char)
-        plain_text = map(zd, cypher_text)
-    """
-
-    def _GenerateCRCTable():
-        """Generate a CRC-32 table.
-
-        ZIP encryption uses the CRC32 one-byte primitive for scrambling some
-        internal keys. We noticed that a direct implementation is faster than
-        relying on binascii.crc32().
-        """
-        poly = 0xedb88320
-        table = [0] * 256
-        for i in range(256):
-            crc = i
-            for j in range(8):
-                if crc & 1:
-                    crc = ((crc >> 1) & 0x7FFFFFFF) ^ poly
-                else:
-                    crc = ((crc >> 1) & 0x7FFFFFFF)
-            table[i] = crc
-        return table
-    crctable = None
-
-    def _crc32(self, ch, crc):
-        """Compute the CRC32 primitive on one byte."""
-        return ((crc >> 8) & 0xffffff) ^ self.crctable[(crc ^ ch) & 0xff]
-
-    def __init__(self, pwd):
-        if _ZipDecrypter.crctable is None:
-            _ZipDecrypter.crctable = _ZipDecrypter._GenerateCRCTable()
-        self.key0 = 305419896
-        self.key1 = 591751049
-        self.key2 = 878082192
-        for p in pwd:
-            self._UpdateKeys(p)
-
-    def _UpdateKeys(self, c):
-        self.key0 = self._crc32(c, self.key0)
-        self.key1 = (self.key1 + (self.key0 & 255)) & 4294967295
-        self.key1 = (self.key1 * 134775813 + 1) & 4294967295
-        self.key2 = self._crc32((self.key1 >> 24) & 255, self.key2)
-
-    def __call__(self, c):
-        """Decrypt a single character."""
-        assert isinstance(c, int)
-        k = self.key2 | 2
-        c = c ^ (((k * (k^1)) >> 8) & 255)
-        self._UpdateKeys(c)
-        return c
-
-
-class LZMACompressor:
-
-    def __init__(self):
-        self._comp = None
-
-    def _init(self):
-        props = lzma._encode_filter_properties({'id': lzma.FILTER_LZMA1})
-        self._comp = lzma.LZMACompressor(lzma.FORMAT_RAW, filters=[
-            lzma._decode_filter_properties(lzma.FILTER_LZMA1, props)
-        ])
-        return struct.pack('<BBH', 9, 4, len(props)) + props
-
-    def compress(self, data):
-        if self._comp is None:
-            return self._init() + self._comp.compress(data)
-        return self._comp.compress(data)
-
-    def flush(self):
-        if self._comp is None:
-            return self._init() + self._comp.flush()
-        return self._comp.flush()
-
-
-class LZMADecompressor:
-
-    def __init__(self):
-        self._decomp = None
-        self._unconsumed = b''
-        self.eof = False
-
-    def decompress(self, data):
-        if self._decomp is None:
-            self._unconsumed += data
-            if len(self._unconsumed) <= 4:
-                return b''
-            psize, = struct.unpack('<H', self._unconsumed[2:4])
-            if len(self._unconsumed) <= 4 + psize:
-                return b''
-
-            self._decomp = lzma.LZMADecompressor(lzma.FORMAT_RAW, filters=[
-                lzma._decode_filter_properties(lzma.FILTER_LZMA1,
-                                               self._unconsumed[4:4 + psize])
-            ])
-            data = self._unconsumed[4 + psize:]
-            del self._unconsumed
-
-        result = self._decomp.decompress(data)
-        self.eof = self._decomp.eof
-        return result
-
-
-compressor_names = {
-    0: 'store',
-    1: 'shrink',
-    2: 'reduce',
-    3: 'reduce',
-    4: 'reduce',
-    5: 'reduce',
-    6: 'implode',
-    7: 'tokenize',
-    8: 'deflate',
-    9: 'deflate64',
-    10: 'implode',
-    12: 'bzip2',
-    14: 'lzma',
-    18: 'terse',
-    19: 'lz77',
-    97: 'wavpack',
-    98: 'ppmd',
-}
-
-def _check_compression(compression):
-    if compression == ZIP_STORED:
-        pass
-    elif compression == ZIP_DEFLATED:
-        if not zlib:
-            raise RuntimeError(
-                "Compression requires the (missing) zlib module")
-    elif compression == ZIP_BZIP2:
-        if not bz2:
-            raise RuntimeError(
-                "Compression requires the (missing) bz2 module")
-    elif compression == ZIP_LZMA:
-        if not lzma:
-            raise RuntimeError(
-                "Compression requires the (missing) lzma module")
-    else:
-        raise RuntimeError("That compression method is not supported")
-
-
-def _get_compressor(compress_type):
-    if compress_type == ZIP_DEFLATED:
-        return zlib.compressobj(zlib.Z_DEFAULT_COMPRESSION,
-                                zlib.DEFLATED, -15)
-    elif compress_type == ZIP_BZIP2:
-        return bz2.BZ2Compressor()
-    elif compress_type == ZIP_LZMA:
-        return LZMACompressor()
-    else:
-        return None
-
-
-def _get_decompressor(compress_type):
-    if compress_type == ZIP_STORED:
-        return None
-    elif compress_type == ZIP_DEFLATED:
-        return zlib.decompressobj(-15)
-    elif compress_type == ZIP_BZIP2:
-        return bz2.BZ2Decompressor()
-    elif compress_type == ZIP_LZMA:
-        return LZMADecompressor()
-    else:
-        descr = compressor_names.get(compress_type)
-        if descr:
-            raise NotImplementedError("compression type %d (%s)" % (compress_type, descr))
-        else:
-            raise NotImplementedError("compression type %d" % (compress_type,))
-
-
-class _SharedFile:
-    def __init__(self, file, pos, close, lock):
-        self._file = file
-        self._pos = pos
-        self._close = close
-        self._lock = lock
-
-    def read(self, n=-1):
-        with self._lock:
-            self._file.seek(self._pos)
-            data = self._file.read(n)
-            self._pos = self._file.tell()
-            return data
-
-    def close(self):
-        if self._file is not None:
-            fileobj = self._file
-            self._file = None
-            self._close(fileobj)
-
-# Provide the tell method for unseekable stream
-class _Tellable:
-    def __init__(self, fp):
-        self.fp = fp
-        self.offset = 0
-
-    def write(self, data):
-        n = self.fp.write(data)
-        self.offset += n
-        return n
-
-    def tell(self):
-        return self.offset
-
-    def flush(self):
-        self.fp.flush()
-
-    def close(self):
-        self.fp.close()
-
-
-class ZipExtFile(io.BufferedIOBase):
-    """File-like object for reading an archive member.
-       Is returned by ZipFile.open().
-    """
-
-    # Max size supported by decompressor.
-    MAX_N = 1 << 31 - 1
-
-    # Read from compressed files in 4k blocks.
-    MIN_READ_SIZE = 4096
-
-    # Search for universal newlines or line chunks.
-    PATTERN = re.compile(br'^(?P<chunk>[^\r\n]+)|(?P<newline>\n|\r\n?)')
-
-    def __init__(self, fileobj, mode, zipinfo, decrypter=None,
-                 close_fileobj=False):
-        self._fileobj = fileobj
-        self._decrypter = decrypter
-        self._close_fileobj = close_fileobj
-
-        self._compress_type = zipinfo.compress_type
-        self._compress_left = zipinfo.compress_size
-        self._left = zipinfo.file_size
-
-        self._decompressor = _get_decompressor(self._compress_type)
-
-        self._eof = False
-        self._readbuffer = b''
-        self._offset = 0
-
-        self._universal = 'U' in mode
-        self.newlines = None
-
-        # Adjust read size for encrypted files since the first 12 bytes
-        # are for the encryption/password information.
-        if self._decrypter is not None:
-            self._compress_left -= 12
-
-        self.mode = mode
-        self.name = zipinfo.filename
-
-        if hasattr(zipinfo, 'CRC'):
-            self._expected_crc = zipinfo.CRC
-            self._running_crc = crc32(b'')
-        else:
-            self._expected_crc = None
-
-    def __repr__(self):
-        result = ['<%s.%s' % (self.__class__.__module__,
-                              self.__class__.__qualname__)]
-        if not self.closed:
-            result.append(' name=%r mode=%r' % (self.name, self.mode))
-            if self._compress_type != ZIP_STORED:
-                result.append(' compress_type=%s' %
-                              compressor_names.get(self._compress_type,
-                                                   self._compress_type))
-        else:
-            result.append(' [closed]')
-        result.append('>')
-        return ''.join(result)
-
-    def readline(self, limit=-1):
-        """Read and return a line from the stream.
-
-        If limit is specified, at most limit bytes will be read.
-        """
-
-        if not self._universal and limit < 0:
-            # Shortcut common case - newline found in buffer.
-            i = self._readbuffer.find(b'\n', self._offset) + 1
-            if i > 0:
-                line = self._readbuffer[self._offset: i]
-                self._offset = i
-                return line
-
-        if not self._universal:
-            return io.BufferedIOBase.readline(self, limit)
-
-        line = b''
-        while limit < 0 or len(line) < limit:
-            readahead = self.peek(2)
-            if readahead == b'':
-                return line
-
-            #
-            # Search for universal newlines or line chunks.
-            #
-            # The pattern returns either a line chunk or a newline, but not
-            # both. Combined with peek(2), we are assured that the sequence
-            # '\r\n' is always retrieved completely and never split into
-            # separate newlines - '\r', '\n' due to coincidental readaheads.
-            #
-            match = self.PATTERN.search(readahead)
-            newline = match.group('newline')
-            if newline is not None:
-                if self.newlines is None:
-                    self.newlines = []
-                if newline not in self.newlines:
-                    self.newlines.append(newline)
-                self._offset += len(newline)
-                return line + b'\n'
-
-            chunk = match.group('chunk')
-            if limit >= 0:
-                chunk = chunk[: limit - len(line)]
-
-            self._offset += len(chunk)
-            line += chunk
-
-        return line
-
-    def peek(self, n=1):
-        """Returns buffered bytes without advancing the position."""
-        if n > len(self._readbuffer) - self._offset:
-            chunk = self.read(n)
-            if len(chunk) > self._offset:
-                self._readbuffer = chunk + self._readbuffer[self._offset:]
-                self._offset = 0
-            else:
-                self._offset -= len(chunk)
-
-        # Return up to 512 bytes to reduce allocation overhead for tight loops.
-        return self._readbuffer[self._offset: self._offset + 512]
-
-    def readable(self):
-        return True
-
-    def read(self, n=-1):
-        """Read and return up to n bytes.
-        If the argument is omitted, None, or negative, data is read and returned until EOF is reached..
-        """
-        if n is None or n < 0:
-            buf = self._readbuffer[self._offset:]
-            self._readbuffer = b''
-            self._offset = 0
-            while not self._eof:
-                buf += self._read1(self.MAX_N)
-            return buf
-
-        end = n + self._offset
-        if end < len(self._readbuffer):
-            buf = self._readbuffer[self._offset:end]
-            self._offset = end
-            return buf
-
-        n = end - len(self._readbuffer)
-        buf = self._readbuffer[self._offset:]
-        self._readbuffer = b''
-        self._offset = 0
-        while n > 0 and not self._eof:
-            data = self._read1(n)
-            if n < len(data):
-                self._readbuffer = data
-                self._offset = n
-                buf += data[:n]
-                break
-            buf += data
-            n -= len(data)
-        return buf
-
-    def _update_crc(self, newdata):
-        # Update the CRC using the given data.
-        if self._expected_crc is None:
-            # No need to compute the CRC if we don't have a reference value
-            return
-        self._running_crc = crc32(newdata, self._running_crc)
-        # Check the CRC if we're at the end of the file
-        if self._eof and self._running_crc != self._expected_crc:
-            raise BadZipFile("Bad CRC-32 for file %r" % self.name)
-
-    def read1(self, n):
-        """Read up to n bytes with at most one read() system call."""
-
-        if n is None or n < 0:
-            buf = self._readbuffer[self._offset:]
-            self._readbuffer = b''
-            self._offset = 0
-            while not self._eof:
-                data = self._read1(self.MAX_N)
-                if data:
-                    buf += data
-                    break
-            return buf
-
-        end = n + self._offset
-        if end < len(self._readbuffer):
-            buf = self._readbuffer[self._offset:end]
-            self._offset = end
-            return buf
-
-        n = end - len(self._readbuffer)
-        buf = self._readbuffer[self._offset:]
-        self._readbuffer = b''
-        self._offset = 0
-        if n > 0:
-            while not self._eof:
-                data = self._read1(n)
-                if n < len(data):
-                    self._readbuffer = data
-                    self._offset = n
-                    buf += data[:n]
-                    break
-                if data:
-                    buf += data
-                    break
-        return buf
-
-    def _read1(self, n):
-        # Read up to n compressed bytes with at most one read() system call,
-        # decrypt and decompress them.
-        if self._eof or n <= 0:
-            return b''
-
-        # Read from file.
-        if self._compress_type == ZIP_DEFLATED:
-            ## Handle unconsumed data.
-            data = self._decompressor.unconsumed_tail
-            if n > len(data):
-                data += self._read2(n - len(data))
-        else:
-            data = self._read2(n)
-
-        if self._compress_type == ZIP_STORED:
-            self._eof = self._compress_left <= 0
-        elif self._compress_type == ZIP_DEFLATED:
-            n = max(n, self.MIN_READ_SIZE)
-            data = self._decompressor.decompress(data, n)
-            self._eof = (self._decompressor.eof or
-                         self._compress_left <= 0 and
-                         not self._decompressor.unconsumed_tail)
-            if self._eof:
-                data += self._decompressor.flush()
-        else:
-            data = self._decompressor.decompress(data)
-            self._eof = self._decompressor.eof or self._compress_left <= 0
-
-        data = data[:self._left]
-        self._left -= len(data)
-        if self._left <= 0:
-            self._eof = True
-        self._update_crc(data)
-        return data
-
-    def _read2(self, n):
-        if self._compress_left <= 0:
-            return b''
-
-        n = max(n, self.MIN_READ_SIZE)
-        n = min(n, self._compress_left)
-
-        data = self._fileobj.read(n)
-        self._compress_left -= len(data)
-        if not data:
-            raise EOFError
-
-        if self._decrypter is not None:
-            data = bytes(map(self._decrypter, data))
-        return data
-
-    def close(self):
-        try:
-            if self._close_fileobj:
-                self._fileobj.close()
-        finally:
-            super().close()
-
-
-class ZipFile:
-    """ Class with methods to open, read, write, close, list zip files.
-
-    z = ZipFile(file, mode="r", compression=ZIP_STORED, allowZip64=True)
-
-    file: Either the path to the file, or a file-like object.
-          If it is a path, the file will be opened and closed by ZipFile.
-    mode: The mode can be either read 'r', write 'w', exclusive create 'x',
-          or append 'a'.
-    compression: ZIP_STORED (no compression), ZIP_DEFLATED (requires zlib),
-                 ZIP_BZIP2 (requires bz2) or ZIP_LZMA (requires lzma).
-    allowZip64: if True ZipFile will create files with ZIP64 extensions when
-                needed, otherwise it will raise an exception when this would
-                be necessary.
-
-    """
-
-    fp = None                   # Set here since __del__ checks it
-    _windows_illegal_name_trans_table = None
-
-    def __init__(self, file, mode="r", compression=ZIP_STORED, allowZip64=True):
-        """Open the ZIP file with mode read 'r', write 'w', exclusive create 'x',
-        or append 'a'."""
-        if mode not in ('r', 'w', 'x', 'a'):
-            raise RuntimeError("ZipFile requires mode 'r', 'w', 'x', or 'a'")
-
-        _check_compression(compression)
-
-        self._allowZip64 = allowZip64
-        self._didModify = False
-        self.debug = 0  # Level of printing: 0 through 3
-        self.NameToInfo = {}    # Find file info given name
-        self.filelist = []      # List of ZipInfo instances for archive
-        self.compression = compression  # Method of compression
-        self.mode = mode
-        self.pwd = None
-        self._comment = b''
-
-        # Check if we were passed a file-like object
-        if isinstance(file, str):
-            # No, it's a filename
-            self._filePassed = 0
-            self.filename = file
-            modeDict = {'r' : 'rb', 'w': 'w+b', 'x': 'x+b', 'a' : 'r+b',
-                        'r+b': 'w+b', 'w+b': 'wb', 'x+b': 'xb'}
-            filemode = modeDict[mode]
-            while True:
-                try:
-                    self.fp = io.open(file, filemode)
-                except OSError:
-                    if filemode in modeDict:
-                        filemode = modeDict[filemode]
-                        continue
-                    raise
-                break
-        else:
-            self._filePassed = 1
-            self.fp = file
-            self.filename = getattr(file, 'name', None)
-        self._fileRefCnt = 1
-        self._lock = threading.RLock()
-        self._seekable = True
-
-        try:
-            if mode == 'r':
-                self._RealGetContents()
-            elif mode in ('w', 'x'):
-                # set the modified flag so central directory gets written
-                # even if no files are added to the archive
-                self._didModify = True
-                try:
-                    self.start_dir = self.fp.tell()
-                except (AttributeError, OSError):
-                    self.fp = _Tellable(self.fp)
-                    self.start_dir = 0
-                    self._seekable = False
-                else:
-                    # Some file-like objects can provide tell() but not seek()
-                    try:
-                        self.fp.seek(self.start_dir)
-                    except (AttributeError, OSError):
-                        self._seekable = False
-            elif mode == 'a':
-                try:
-                    # See if file is a zip file
-                    self._RealGetContents()
-                    # seek to start of directory and overwrite
-                    self.fp.seek(self.start_dir)
-                except BadZipFile:
-                    # file is not a zip file, just append
-                    self.fp.seek(0, 2)
-
-                    # set the modified flag so central directory gets written
-                    # even if no files are added to the archive
-                    self._didModify = True
-                    self.start_dir = self.fp.tell()
-            else:
-                raise RuntimeError("Mode must be 'r', 'w', 'x', or 'a'")
-        except:
-            fp = self.fp
-            self.fp = None
-            self._fpclose(fp)
-            raise
-
-    def __enter__(self):
-        return self
-
-    def __exit__(self, type, value, traceback):
-        self.close()
-
-    def __repr__(self):
-        result = ['<%s.%s' % (self.__class__.__module__,
-                              self.__class__.__qualname__)]
-        if self.fp is not None:
-            if self._filePassed:
-                result.append(' file=%r' % self.fp)
-            elif self.filename is not None:
-                result.append(' filename=%r' % self.filename)
-            result.append(' mode=%r' % self.mode)
-        else:
-            result.append(' [closed]')
-        result.append('>')
-        return ''.join(result)
-
-    def _RealGetContents(self):
-        """Read in the table of contents for the ZIP file."""
-        fp = self.fp
-        try:
-            endrec = _EndRecData(fp)
-        except OSError:
-            raise BadZipFile("File is not a zip file")
-        if not endrec:
-            raise BadZipFile("File is not a zip file")
-        if self.debug > 1:
-            print(endrec)
-        size_cd = endrec[_ECD_SIZE]             # bytes in central directory
-        offset_cd = endrec[_ECD_OFFSET]         # offset of central directory
-        self._comment = endrec[_ECD_COMMENT]    # archive comment
-
-        # "concat" is zero, unless zip was concatenated to another file
-        concat = endrec[_ECD_LOCATION] - size_cd - offset_cd
-        if endrec[_ECD_SIGNATURE] == stringEndArchive64:
-            # If Zip64 extension structures are present, account for them
-            concat -= (sizeEndCentDir64 + sizeEndCentDir64Locator)
-
-        if self.debug > 2:
-            inferred = concat + offset_cd
-            print("given, inferred, offset", offset_cd, inferred, concat)
-        # self.start_dir:  Position of start of central directory
-        self.start_dir = offset_cd + concat
-        fp.seek(self.start_dir, 0)
-        data = fp.read(size_cd)
-        fp = io.BytesIO(data)
-        total = 0
-        while total < size_cd:
-            centdir = fp.read(sizeCentralDir)
-            if len(centdir) != sizeCentralDir:
-                raise BadZipFile("Truncated central directory")
-            centdir = struct.unpack(structCentralDir, centdir)
-            if centdir[_CD_SIGNATURE] != stringCentralDir:
-                raise BadZipFile("Bad magic number for central directory")
-            if self.debug > 2:
-                print(centdir)
-            filename = fp.read(centdir[_CD_FILENAME_LENGTH])
-            flags = centdir[5]
-            if flags & 0x800:
-                # UTF-8 file names extension
-                filename = filename.decode('utf-8')
-            else:
-                # Historical ZIP filename encoding
-                filename = filename.decode('gbk')
-                # filename = filename.encode("cp437").decode('gbk')
-
-            # Create ZipInfo instance to store file information
-            x = ZipInfo(filename)
-            x.extra = fp.read(centdir[_CD_EXTRA_FIELD_LENGTH])
-            x.comment = fp.read(centdir[_CD_COMMENT_LENGTH])
-            x.header_offset = centdir[_CD_LOCAL_HEADER_OFFSET]
-            (x.create_version, x.create_system, x.extract_version, x.reserved,
-             x.flag_bits, x.compress_type, t, d,
-             x.CRC, x.compress_size, x.file_size) = centdir[1:12]
-            if x.extract_version > MAX_EXTRACT_VERSION:
-                raise NotImplementedError("zip file version %.1f" %
-                                          (x.extract_version / 10))
-            x.volume, x.internal_attr, x.external_attr = centdir[15:18]
-            # Convert date/time code to (year, month, day, hour, min, sec)
-            x._raw_time = t
-            x.date_time = ( (d>>9)+1980, (d>>5)&0xF, d&0x1F,
-                            t>>11, (t>>5)&0x3F, (t&0x1F) * 2 )
-
-            x._decodeExtra()
-            x.header_offset = x.header_offset + concat
-            self.filelist.append(x)
-            self.NameToInfo[x.filename] = x
-
-            # update total bytes read from central directory
-            total = (total + sizeCentralDir + centdir[_CD_FILENAME_LENGTH]
-                     + centdir[_CD_EXTRA_FIELD_LENGTH]
-                     + centdir[_CD_COMMENT_LENGTH])
-
-            if self.debug > 2:
-                print("total", total)
-
-
-    def namelist(self):
-        """Return a list of file names in the archive."""
-        return [data.filename for data in self.filelist]
-
-    def infolist(self):
-        """Return a list of class ZipInfo instances for files in the
-        archive."""
-        return self.filelist
-
-    def printdir(self, file=None):
-        """Print a table of contents for the zip file."""
-        print("%-46s %19s %12s" % ("File Name", "Modified    ", "Size"),
-              file=file)
-        for zinfo in self.filelist:
-            date = "%d-%02d-%02d %02d:%02d:%02d" % zinfo.date_time[:6]
-            print("%-46s %s %12d" % (zinfo.filename, date, zinfo.file_size),
-                  file=file)
-
-    def testzip(self):
-        """Read all the files and check the CRC."""
-        chunk_size = 2 ** 20
-        for zinfo in self.filelist:
-            try:
-                # Read by chunks, to avoid an OverflowError or a
-                # MemoryError with very large embedded files.
-                with self.open(zinfo.filename, "r") as f:
-                    while f.read(chunk_size):     # Check CRC-32
-                        pass
-            except BadZipFile:
-                return zinfo.filename
-
-    def getinfo(self, name):
-        """Return the instance of ZipInfo given 'name'."""
-        info = self.NameToInfo.get(name)
-        if info is None:
-            raise KeyError(
-                'There is no item named %r in the archive' % name)
-
-        return info
-
-    def setpassword(self, pwd):
-        """Set default password for encrypted files."""
-        if pwd and not isinstance(pwd, bytes):
-            raise TypeError("pwd: expected bytes, got %s" % type(pwd))
-        if pwd:
-            self.pwd = pwd
-        else:
-            self.pwd = None
-
-    @property
-    def comment(self):
-        """The comment text associated with the ZIP file."""
-        return self._comment
-
-    @comment.setter
-    def comment(self, comment):
-        if not isinstance(comment, bytes):
-            raise TypeError("comment: expected bytes, got %s" % type(comment))
-        # check for valid comment length
-        if len(comment) > ZIP_MAX_COMMENT:
-            import warnings
-            warnings.warn('Archive comment is too long; truncating to %d bytes'
-                          % ZIP_MAX_COMMENT, stacklevel=2)
-            comment = comment[:ZIP_MAX_COMMENT]
-        self._comment = comment
-        self._didModify = True
-
-    def read(self, name, pwd=None):
-        """Return file bytes (as a string) for name."""
-        with self.open(name, "r", pwd) as fp:
-            return fp.read()
-
-    def open(self, name, mode="r", pwd=None):
-        """Return file-like object for 'name'."""
-        if mode not in ("r", "U", "rU"):
-            raise RuntimeError('open() requires mode "r", "U", or "rU"')
-        if 'U' in mode:
-            import warnings
-            warnings.warn("'U' mode is deprecated",
-                          DeprecationWarning, 2)
-        if pwd and not isinstance(pwd, bytes):
-            raise TypeError("pwd: expected bytes, got %s" % type(pwd))
-        if not self.fp:
-            raise RuntimeError(
-                "Attempt to read ZIP archive that was already closed")
-
-        # Make sure we have an info object
-        if isinstance(name, ZipInfo):
-            # 'name' is already an info object
-            zinfo = name
-        else:
-            # Get info object for name
-            zinfo = self.getinfo(name)
-
-        self._fileRefCnt += 1
-        zef_file = _SharedFile(self.fp, zinfo.header_offset, self._fpclose, self._lock)
-        try:
-            # Skip the file header:
-            fheader = zef_file.read(sizeFileHeader)
-            if len(fheader) != sizeFileHeader:
-                raise BadZipFile("Truncated file header")
-            fheader = struct.unpack(structFileHeader, fheader)
-            if fheader[_FH_SIGNATURE] != stringFileHeader:
-                raise BadZipFile("Bad magic number for file header")
-
-            fname = zef_file.read(fheader[_FH_FILENAME_LENGTH])
-            if fheader[_FH_EXTRA_FIELD_LENGTH]:
-                zef_file.read(fheader[_FH_EXTRA_FIELD_LENGTH])
-
-            if zinfo.flag_bits & 0x20:
-                # Zip 2.7: compressed patched data
-                raise NotImplementedError("compressed patched data (flag bit 5)")
-
-            if zinfo.flag_bits & 0x40:
-                # strong encryption
-                raise NotImplementedError("strong encryption (flag bit 6)")
-
-            if zinfo.flag_bits & 0x800:
-                # UTF-8 filename
-                fname_str = fname.decode("utf-8")
-            else:
-                fname_str = fname.decode("cp437")
-                fname_str = fname_str.encode("cp437").decode('gbk')
-
-
-            if fname_str != zinfo.orig_filename:
-                raise BadZipFile(
-                    'File name in directory %r and header %r differ.'
-                    % (zinfo.orig_filename, fname))
-
-            # check for encrypted flag & handle password
-            is_encrypted = zinfo.flag_bits & 0x1
-            zd = None
-            if is_encrypted:
-                if not pwd:
-                    pwd = self.pwd
-                if not pwd:
-                    raise RuntimeError("File %s is encrypted, password "
-                                       "required for extraction" % name)
-
-                zd = _ZipDecrypter(pwd)
-                # The first 12 bytes in the cypher stream is an encryption header
-                #  used to strengthen the algorithm. The first 11 bytes are
-                #  completely random, while the 12th contains the MSB of the CRC,
-                #  or the MSB of the file time depending on the header type
-                #  and is used to check the correctness of the password.
-                header = zef_file.read(12)
-                h = list(map(zd, header[0:12]))
-                if zinfo.flag_bits & 0x8:
-                    # compare against the file type from extended local headers
-                    check_byte = (zinfo._raw_time >> 8) & 0xff
-                else:
-                    # compare against the CRC otherwise
-                    check_byte = (zinfo.CRC >> 24) & 0xff
-                if h[11] != check_byte:
-                    raise RuntimeError("Bad password for file", name)
-
-            return ZipExtFile(zef_file, mode, zinfo, zd, True)
-        except:
-            zef_file.close()
-            raise
-
-    def extract(self, member, path=None, pwd=None):
-        """Extract a member from the archive to the current working directory,
-           using its full name. Its file information is extracted as accurately
-           as possible. `member' may be a filename or a ZipInfo object. You can
-           specify a different directory using `path'.
-        """
-        if not isinstance(member, ZipInfo):
-            member = self.getinfo(member)
-
-        if path is None:
-            path = os.getcwd()
-
-        return self._extract_member(member, path, pwd)
-
-    def extractall(self, path=None, members=None, pwd=None):
-        """Extract all members from the archive to the current working
-           directory. `path' specifies a different directory to extract to.
-           `members' is optional and must be a subset of the list returned
-           by namelist().
-        """
-        if members is None:
-            members = self.namelist()
-
-        for zipinfo in members:
-            self.extract(zipinfo, path, pwd)
-
-    @classmethod
-    def _sanitize_windows_name(cls, arcname, pathsep):
-        """Replace bad characters and remove trailing dots from parts."""
-        table = cls._windows_illegal_name_trans_table
-        if not table:
-            illegal = ':<>|"?*'
-            table = str.maketrans(illegal, '_' * len(illegal))
-            cls._windows_illegal_name_trans_table = table
-        arcname = arcname.translate(table)
-        # remove trailing dots
-        arcname = (x.rstrip('.') for x in arcname.split(pathsep))
-        # rejoin, removing empty parts.
-        arcname = pathsep.join(x for x in arcname if x)
-        return arcname
-
-    def _extract_member(self, member, targetpath, pwd):
-        """Extract the ZipInfo object 'member' to a physical
-           file on the path targetpath.
-        """
-        # build the destination pathname, replacing
-        # forward slashes to platform specific separators.
-        arcname = member.filename.replace('/', os.path.sep)
-
-        if os.path.altsep:
-            arcname = arcname.replace(os.path.altsep, os.path.sep)
-        # interpret absolute pathname as relative, remove drive letter or
-        # UNC path, redundant separators, "." and ".." components.
-        arcname = os.path.splitdrive(arcname)[1]
-        invalid_path_parts = ('', os.path.curdir, os.path.pardir)
-        arcname = os.path.sep.join(x for x in arcname.split(os.path.sep)
-                                   if x not in invalid_path_parts)
-        if os.path.sep == '\\':
-            # filter illegal characters on Windows
-            arcname = self._sanitize_windows_name(arcname, os.path.sep)
-
-        targetpath = os.path.join(targetpath, arcname)
-        targetpath = os.path.normpath(targetpath)
-
-        # Create all upper directories if necessary.
-        upperdirs = os.path.dirname(targetpath)
-        if upperdirs and not os.path.exists(upperdirs):
-            os.makedirs(upperdirs)
-
-        if member.filename[-1] == '/':
-            if not os.path.isdir(targetpath):
-                os.mkdir(targetpath)
-            return targetpath
-
-        with self.open(member, pwd=pwd) as source, \
-                open(targetpath, "wb") as target:
-            shutil.copyfileobj(source, target)
-
-        return targetpath
-
-    def _writecheck(self, zinfo):
-        """Check for errors before writing a file to the archive."""
-        if zinfo.filename in self.NameToInfo:
-            import warnings
-            warnings.warn('Duplicate name: %r' % zinfo.filename, stacklevel=3)
-        if self.mode not in ('w', 'x', 'a'):
-            raise RuntimeError("write() requires mode 'w', 'x', or 'a'")
-        if not self.fp:
-            raise RuntimeError(
-                "Attempt to write ZIP archive that was already closed")
-        _check_compression(zinfo.compress_type)
-        if not self._allowZip64:
-            requires_zip64 = None
-            if len(self.filelist) >= ZIP_FILECOUNT_LIMIT:
-                requires_zip64 = "Files count"
-            elif zinfo.file_size > ZIP64_LIMIT:
-                requires_zip64 = "Filesize"
-            elif zinfo.header_offset > ZIP64_LIMIT:
-                requires_zip64 = "Zipfile size"
-            if requires_zip64:
-                raise LargeZipFile(requires_zip64 +
-                                   " would require ZIP64 extensions")
-
-    def write(self, filename, arcname=None, compress_type=None):
-        """Put the bytes from filename into the archive under the name
-        arcname."""
-        if not self.fp:
-            raise RuntimeError(
-                "Attempt to write to ZIP archive that was already closed")
-
-        st = os.stat(filename)
-        isdir = stat.S_ISDIR(st.st_mode)
-        mtime = time.localtime(st.st_mtime)
-        date_time = mtime[0:6]
-        # Create ZipInfo instance to store file information
-        if arcname is None:
-            arcname = filename
-        arcname = os.path.normpath(os.path.splitdrive(arcname)[1])
-        while arcname[0] in (os.sep, os.altsep):
-            arcname = arcname[1:]
-        if isdir:
-            arcname += '/'
-        zinfo = ZipInfo(arcname, date_time)
-        zinfo.external_attr = (st[0] & 0xFFFF) << 16      # Unix attributes
-        if isdir:
-            zinfo.compress_type = ZIP_STORED
-        elif compress_type is None:
-            zinfo.compress_type = self.compression
-        else:
-            zinfo.compress_type = compress_type
-
-        zinfo.file_size = st.st_size
-        zinfo.flag_bits = 0x00
-        with self._lock:
-            if self._seekable:
-                self.fp.seek(self.start_dir)
-            zinfo.header_offset = self.fp.tell()    # Start of header bytes
-            if zinfo.compress_type == ZIP_LZMA:
-                # Compressed data includes an end-of-stream (EOS) marker
-                zinfo.flag_bits |= 0x02
-
-            self._writecheck(zinfo)
-            self._didModify = True
-
-            if isdir:
-                zinfo.file_size = 0
-                zinfo.compress_size = 0
-                zinfo.CRC = 0
-                zinfo.external_attr |= 0x10  # MS-DOS directory flag
-                self.filelist.append(zinfo)
-                self.NameToInfo[zinfo.filename] = zinfo
-                self.fp.write(zinfo.FileHeader(False))
-                self.start_dir = self.fp.tell()
-                return
-
-            cmpr = _get_compressor(zinfo.compress_type)
-            if not self._seekable:
-                zinfo.flag_bits |= 0x08
-            with open(filename, "rb") as fp:
-                # Must overwrite CRC and sizes with correct data later
-                zinfo.CRC = CRC = 0
-                zinfo.compress_size = compress_size = 0
-                # Compressed size can be larger than uncompressed size
-                zip64 = self._allowZip64 and \
-                        zinfo.file_size * 1.05 > ZIP64_LIMIT
-                self.fp.write(zinfo.FileHeader(zip64))
-                file_size = 0
-                while 1:
-                    buf = fp.read(1024 * 8)
-                    if not buf:
-                        break
-                    file_size = file_size + len(buf)
-                    CRC = crc32(buf, CRC)
-                    if cmpr:
-                        buf = cmpr.compress(buf)
-                        compress_size = compress_size + len(buf)
-                    self.fp.write(buf)
-            if cmpr:
-                buf = cmpr.flush()
-                compress_size = compress_size + len(buf)
-                self.fp.write(buf)
-                zinfo.compress_size = compress_size
-            else:
-                zinfo.compress_size = file_size
-            zinfo.CRC = CRC
-            zinfo.file_size = file_size
-            if zinfo.flag_bits & 0x08:
-                # Write CRC and file sizes after the file data
-                fmt = '<LQQ' if zip64 else '<LLL'
-                self.fp.write(struct.pack(fmt, zinfo.CRC, zinfo.compress_size,
-                                          zinfo.file_size))
-                self.start_dir = self.fp.tell()
-            else:
-                if not zip64 and self._allowZip64:
-                    if file_size > ZIP64_LIMIT:
-                        raise RuntimeError('File size has increased during compressing')
-                    if compress_size > ZIP64_LIMIT:
-                        raise RuntimeError('Compressed size larger than uncompressed size')
-                # Seek backwards and write file header (which will now include
-                # correct CRC and file sizes)
-                self.start_dir = self.fp.tell() # Preserve current position in file
-                self.fp.seek(zinfo.header_offset)
-                self.fp.write(zinfo.FileHeader(zip64))
-                self.fp.seek(self.start_dir)
-            self.filelist.append(zinfo)
-            self.NameToInfo[zinfo.filename] = zinfo
-
-    def writestr(self, zinfo_or_arcname, data, compress_type=None):
-        """Write a file into the archive.  The contents is 'data', which
-        may be either a 'str' or a 'bytes' instance; if it is a 'str',
-        it is encoded as UTF-8 first.
-        'zinfo_or_arcname' is either a ZipInfo instance or
-        the name of the file in the archive."""
-        if isinstance(data, str):
-            data = data.encode("utf-8")
-        if not isinstance(zinfo_or_arcname, ZipInfo):
-            zinfo = ZipInfo(filename=zinfo_or_arcname,
-                            date_time=time.localtime(time.time())[:6])
-            zinfo.compress_type = self.compression
-            if zinfo.filename[-1] == '/':
-                zinfo.external_attr = 0o40775 << 16   # drwxrwxr-x
-                zinfo.external_attr |= 0x10           # MS-DOS directory flag
-            else:
-                zinfo.external_attr = 0o600 << 16     # ?rw-------
-        else:
-            zinfo = zinfo_or_arcname
-
-        if not self.fp:
-            raise RuntimeError(
-                "Attempt to write to ZIP archive that was already closed")
-
-        zinfo.file_size = len(data)            # Uncompressed size
-        with self._lock:
-            if self._seekable:
-                self.fp.seek(self.start_dir)
-            zinfo.header_offset = self.fp.tell()    # Start of header data
-            if compress_type is not None:
-                zinfo.compress_type = compress_type
-            zinfo.header_offset = self.fp.tell()    # Start of header data
-            if compress_type is not None:
-                zinfo.compress_type = compress_type
-            if zinfo.compress_type == ZIP_LZMA:
-                # Compressed data includes an end-of-stream (EOS) marker
-                zinfo.flag_bits |= 0x02
-
-            self._writecheck(zinfo)
-            self._didModify = True
-            zinfo.CRC = crc32(data)       # CRC-32 checksum
-            co = _get_compressor(zinfo.compress_type)
-            if co:
-                data = co.compress(data) + co.flush()
-                zinfo.compress_size = len(data)    # Compressed size
-            else:
-                zinfo.compress_size = zinfo.file_size
-            zip64 = zinfo.file_size > ZIP64_LIMIT or \
-                    zinfo.compress_size > ZIP64_LIMIT
-            if zip64 and not self._allowZip64:
-                raise LargeZipFile("Filesize would require ZIP64 extensions")
-            self.fp.write(zinfo.FileHeader(zip64))
-            self.fp.write(data)
-            if zinfo.flag_bits & 0x08:
-                # Write CRC and file sizes after the file data
-                fmt = '<LQQ' if zip64 else '<LLL'
-                self.fp.write(struct.pack(fmt, zinfo.CRC, zinfo.compress_size,
-                                          zinfo.file_size))
-            self.fp.flush()
-            self.start_dir = self.fp.tell()
-            self.filelist.append(zinfo)
-            self.NameToInfo[zinfo.filename] = zinfo
-
-    def __del__(self):
-        """Call the "close()" method in case the user forgot."""
-        self.close()
-
-    def close(self):
-        """Close the file, and for mode 'w', 'x' and 'a' write the ending
-        records."""
-        if self.fp is None:
-            return
-
-        try:
-            if self.mode in ('w', 'x', 'a') and self._didModify: # write ending records
-                with self._lock:
-                    if self._seekable:
-                        self.fp.seek(self.start_dir)
-                    self._write_end_record()
-        finally:
-            fp = self.fp
-            self.fp = None
-            self._fpclose(fp)
-
-    def _write_end_record(self):
-        for zinfo in self.filelist:         # write central directory
-            dt = zinfo.date_time
-            dosdate = (dt[0] - 1980) << 9 | dt[1] << 5 | dt[2]
-            dostime = dt[3] << 11 | dt[4] << 5 | (dt[5] // 2)
-            extra = []
-            if zinfo.file_size > ZIP64_LIMIT \
-                    or zinfo.compress_size > ZIP64_LIMIT:
-                extra.append(zinfo.file_size)
-                extra.append(zinfo.compress_size)
-                file_size = 0xffffffff
-                compress_size = 0xffffffff
-            else:
-                file_size = zinfo.file_size
-                compress_size = zinfo.compress_size
-
-            if zinfo.header_offset > ZIP64_LIMIT:
-                extra.append(zinfo.header_offset)
-                header_offset = 0xffffffff
-            else:
-                header_offset = zinfo.header_offset
-
-            extra_data = zinfo.extra
-            min_version = 0
-            if extra:
-                # Append a ZIP64 field to the extra's
-                extra_data = struct.pack(
-                    '<HH' + 'Q'*len(extra),
-                    1, 8*len(extra), *extra) + extra_data
-
-                min_version = ZIP64_VERSION
-
-            if zinfo.compress_type == ZIP_BZIP2:
-                min_version = max(BZIP2_VERSION, min_version)
-            elif zinfo.compress_type == ZIP_LZMA:
-                min_version = max(LZMA_VERSION, min_version)
-
-            extract_version = max(min_version, zinfo.extract_version)
-            create_version = max(min_version, zinfo.create_version)
-            try:
-                filename, flag_bits = zinfo._encodeFilenameFlags()
-                centdir = struct.pack(structCentralDir,
-                                      stringCentralDir, create_version,
-                                      zinfo.create_system, extract_version, zinfo.reserved,
-                                      flag_bits, zinfo.compress_type, dostime, dosdate,
-                                      zinfo.CRC, compress_size, file_size,
-                                      len(filename), len(extra_data), len(zinfo.comment),
-                                      0, zinfo.internal_attr, zinfo.external_attr,
-                                      header_offset)
-            except DeprecationWarning:
-                print((structCentralDir, stringCentralDir, create_version,
-                       zinfo.create_system, extract_version, zinfo.reserved,
-                       zinfo.flag_bits, zinfo.compress_type, dostime, dosdate,
-                       zinfo.CRC, compress_size, file_size,
-                       len(zinfo.filename), len(extra_data), len(zinfo.comment),
-                       0, zinfo.internal_attr, zinfo.external_attr,
-                       header_offset), file=sys.stderr)
-                raise
-            self.fp.write(centdir)
-            self.fp.write(filename)
-            self.fp.write(extra_data)
-            self.fp.write(zinfo.comment)
-
-        pos2 = self.fp.tell()
-        # Write end-of-zip-archive record
-        centDirCount = len(self.filelist)
-        centDirSize = pos2 - self.start_dir
-        centDirOffset = self.start_dir
-        requires_zip64 = None
-        if centDirCount > ZIP_FILECOUNT_LIMIT:
-            requires_zip64 = "Files count"
-        elif centDirOffset > ZIP64_LIMIT:
-            requires_zip64 = "Central directory offset"
-        elif centDirSize > ZIP64_LIMIT:
-            requires_zip64 = "Central directory size"
-        if requires_zip64:
-            # Need to write the ZIP64 end-of-archive records
-            if not self._allowZip64:
-                raise LargeZipFile(requires_zip64 +
-                                   " would require ZIP64 extensions")
-            zip64endrec = struct.pack(
-                structEndArchive64, stringEndArchive64,
-                44, 45, 45, 0, 0, centDirCount, centDirCount,
-                centDirSize, centDirOffset)
-            self.fp.write(zip64endrec)
-
-            zip64locrec = struct.pack(
-                structEndArchive64Locator,
-                stringEndArchive64Locator, 0, pos2, 1)
-            self.fp.write(zip64locrec)
-            centDirCount = min(centDirCount, 0xFFFF)
-            centDirSize = min(centDirSize, 0xFFFFFFFF)
-            centDirOffset = min(centDirOffset, 0xFFFFFFFF)
-
-        endrec = struct.pack(structEndArchive, stringEndArchive,
-                             0, 0, centDirCount, centDirCount,
-                             centDirSize, centDirOffset, len(self._comment))
-        self.fp.write(endrec)
-        self.fp.write(self._comment)
-        self.fp.flush()
-
-    def _fpclose(self, fp):
-        assert self._fileRefCnt > 0
-        self._fileRefCnt -= 1
-        if not self._fileRefCnt and not self._filePassed:
-            fp.close()
-
-
-class PyZipFile(ZipFile):
-    """Class to create ZIP archives with Python library files and packages."""
-
-    def __init__(self, file, mode="r", compression=ZIP_STORED,
-                 allowZip64=True, optimize=-1):
-        ZipFile.__init__(self, file, mode=mode, compression=compression,
-                         allowZip64=allowZip64)
-        self._optimize = optimize
-
-    def writepy(self, pathname, basename="", filterfunc=None):
-        """Add all files from "pathname" to the ZIP archive.
-
-        If pathname is a package directory, search the directory and
-        all package subdirectories recursively for all *.py and enter
-        the modules into the archive.  If pathname is a plain
-        directory, listdir *.py and enter all modules.  Else, pathname
-        must be a Python *.py file and the module will be put into the
-        archive.  Added modules are always module.pyc.
-        This method will compile the module.py into module.pyc if
-        necessary.
-        If filterfunc(pathname) is given, it is called with every argument.
-        When it is False, the file or directory is skipped.
-        """
-        if filterfunc and not filterfunc(pathname):
-            if self.debug:
-                label = 'path' if os.path.isdir(pathname) else 'file'
-                print('%s "%s" skipped by filterfunc' % (label, pathname))
-            return
-        dir, name = os.path.split(pathname)
-        if os.path.isdir(pathname):
-            initname = os.path.join(pathname, "__init__.py")
-            if os.path.isfile(initname):
-                # This is a package directory, add it
-                if basename:
-                    basename = "%s/%s" % (basename, name)
-                else:
-                    basename = name
-                if self.debug:
-                    print("Adding package in", pathname, "as", basename)
-                fname, arcname = self._get_codename(initname[0:-3], basename)
-                if self.debug:
-                    print("Adding", arcname)
-                self.write(fname, arcname)
-                dirlist = os.listdir(pathname)
-                dirlist.remove("__init__.py")
-                # Add all *.py files and package subdirectories
-                for filename in dirlist:
-                    path = os.path.join(pathname, filename)
-                    root, ext = os.path.splitext(filename)
-                    if os.path.isdir(path):
-                        if os.path.isfile(os.path.join(path, "__init__.py")):
-                            # This is a package directory, add it
-                            self.writepy(path, basename,
-                                         filterfunc=filterfunc)  # Recursive call
-                    elif ext == ".py":
-                        if filterfunc and not filterfunc(path):
-                            if self.debug:
-                                print('file "%s" skipped by filterfunc' % path)
-                            continue
-                        fname, arcname = self._get_codename(path[0:-3],
-                                                            basename)
-                        if self.debug:
-                            print("Adding", arcname)
-                        self.write(fname, arcname)
-            else:
-                # This is NOT a package directory, add its files at top level
-                if self.debug:
-                    print("Adding files from directory", pathname)
-                for filename in os.listdir(pathname):
-                    path = os.path.join(pathname, filename)
-                    root, ext = os.path.splitext(filename)
-                    if ext == ".py":
-                        if filterfunc and not filterfunc(path):
-                            if self.debug:
-                                print('file "%s" skipped by filterfunc' % path)
-                            continue
-                        fname, arcname = self._get_codename(path[0:-3],
-                                                            basename)
-                        if self.debug:
-                            print("Adding", arcname)
-                        self.write(fname, arcname)
-        else:
-            if pathname[-3:] != ".py":
-                raise RuntimeError(
-                    'Files added with writepy() must end with ".py"')
-            fname, arcname = self._get_codename(pathname[0:-3], basename)
-            if self.debug:
-                print("Adding file", arcname)
-            self.write(fname, arcname)
-
-    def _get_codename(self, pathname, basename):
-        """Return (filename, archivename) for the path.
-
-        Given a module name path, return the correct file path and
-        archive name, compiling if necessary.  For example, given
-        /python/lib/string, return (/python/lib/string.pyc, string).
-        """
-        def _compile(file, optimize=-1):
-            import py_compile
-            if self.debug:
-                print("Compiling", file)
-            try:
-                py_compile.compile(file, doraise=True, optimize=optimize)
-            except py_compile.PyCompileError as err:
-                print(err.msg)
-                return False
-            return True
-
-        file_py  = pathname + ".py"
-        file_pyc = pathname + ".pyc"
-        pycache_opt0 = importlib.util.cache_from_source(file_py, optimization='')
-        pycache_opt1 = importlib.util.cache_from_source(file_py, optimization=1)
-        pycache_opt2 = importlib.util.cache_from_source(file_py, optimization=2)
-        if self._optimize == -1:
-            # legacy mode: use whatever file is present
-            if (os.path.isfile(file_pyc) and
-                    os.stat(file_pyc).st_mtime >= os.stat(file_py).st_mtime):
-                # Use .pyc file.
-                arcname = fname = file_pyc
-            elif (os.path.isfile(pycache_opt0) and
-                  os.stat(pycache_opt0).st_mtime >= os.stat(file_py).st_mtime):
-                # Use the __pycache__/*.pyc file, but write it to the legacy pyc
-                # file name in the archive.
-                fname = pycache_opt0
-                arcname = file_pyc
-            elif (os.path.isfile(pycache_opt1) and
-                  os.stat(pycache_opt1).st_mtime >= os.stat(file_py).st_mtime):
-                # Use the __pycache__/*.pyc file, but write it to the legacy pyc
-                # file name in the archive.
-                fname = pycache_opt1
-                arcname = file_pyc
-            elif (os.path.isfile(pycache_opt2) and
-                  os.stat(pycache_opt2).st_mtime >= os.stat(file_py).st_mtime):
-                # Use the __pycache__/*.pyc file, but write it to the legacy pyc
-                # file name in the archive.
-                fname = pycache_opt2
-                arcname = file_pyc
-            else:
-                # Compile py into PEP 3147 pyc file.
-                if _compile(file_py):
-                    if sys.flags.optimize == 0:
-                        fname = pycache_opt0
-                    elif sys.flags.optimize == 1:
-                        fname = pycache_opt1
-                    else:
-                        fname = pycache_opt2
-                    arcname = file_pyc
-                else:
-                    fname = arcname = file_py
-        else:
-            # new mode: use given optimization level
-            if self._optimize == 0:
-                fname = pycache_opt0
-                arcname = file_pyc
-            else:
-                arcname = file_pyc
-                if self._optimize == 1:
-                    fname = pycache_opt1
-                elif self._optimize == 2:
-                    fname = pycache_opt2
-                else:
-                    msg = "invalid value for 'optimize': {!r}".format(self._optimize)
-                    raise ValueError(msg)
-            if not (os.path.isfile(fname) and
-                    os.stat(fname).st_mtime >= os.stat(file_py).st_mtime):
-                if not _compile(file_py, optimize=self._optimize):
-                    fname = arcname = file_py
-        archivename = os.path.split(arcname)[1]
-        if basename:
-            archivename = "%s/%s" % (basename, archivename)
-        return (fname, archivename)
-
-
-def main(args = None):
-    import textwrap
-    USAGE=textwrap.dedent("""\
-        Usage:
-            zipfile.py -l zipfile.zip        # Show listing of a zipfile
-            zipfile.py -t zipfile.zip        # Test if a zipfile is valid
-            zipfile.py -e zipfile.zip target # Extract zipfile into target dir
-            zipfile.py -c zipfile.zip src ... # Create zipfile from sources
-        """)
-    if args is None:
-        args = sys.argv[1:]
-
-    if not args or args[0] not in ('-l', '-c', '-e', '-t'):
-        print(USAGE)
-        sys.exit(1)
-
-    if args[0] == '-l':
-        if len(args) != 2:
-            print(USAGE)
-            sys.exit(1)
-        with ZipFile(args[1], 'r') as zf:
-            zf.printdir()
-
-    elif args[0] == '-t':
-        if len(args) != 2:
-            print(USAGE)
-            sys.exit(1)
-        with ZipFile(args[1], 'r') as zf:
-            badfile = zf.testzip()
-        if badfile:
-            print("The following enclosed file is corrupted: {!r}".format(badfile))
-        print("Done testing")
-
-    elif args[0] == '-e':
-        if len(args) != 3:
-            print(USAGE)
-            sys.exit(1)
-
-        with ZipFile(args[1], 'r') as zf:
-            zf.extractall(args[2])
-
-    elif args[0] == '-c':
-        if len(args) < 3:
-            print(USAGE)
-            sys.exit(1)
-
-        def addToZip(zf, path, zippath):
-            if os.path.isfile(path):
-                zf.write(path, zippath, ZIP_DEFLATED)
-            elif os.path.isdir(path):
-                if zippath:
-                    zf.write(path, zippath)
-                for nm in os.listdir(path):
-                    addToZip(zf,
-                             os.path.join(path, nm), os.path.join(zippath, nm))
-            # else: ignore
-
-        with ZipFile(args[1], 'w') as zf:
-            for path in args[2:]:
-                zippath = os.path.basename(path)
-                if not zippath:
-                    zippath = os.path.basename(os.path.dirname(path))
-                if zippath in ('', os.curdir, os.pardir):
-                    zippath = ''
-                addToZip(zf, path, zippath)
-
-if __name__ == "__main__":
-    main()