--- a/2.00/zipfile27.py	Thu Nov 25 00:03:29 2010 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,1451 +0,0 @@
-"""
-Read and write ZIP files.
-"""
-# Improved by Chortos-2 in 2010 (added bzip2 support)
-import struct, os, time, sys, shutil
-import binascii, cStringIO, stat
-import io
-import re
-
-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
-
-__all__ = ["BadZipfile", "error", "ZIP_STORED", "ZIP_DEFLATED", "is_zipfile",
-           "ZipInfo", "ZipFile", "PyZipFile", "LargeZipFile", "ZIP_BZIP2" ]
-
-class BadZipfile(Exception):
-    pass
-
-
-class LargeZipFile(Exception):
-    """
-    Raised when writing a zipfile, the zipfile requires ZIP64 extensions
-    and those extensions are disabled.
-    """
-
-error = BadZipfile      # The exception raised by this module
-
-ZIP64_LIMIT = (1 << 31) - 1
-ZIP_FILECOUNT_LIMIT = 1 << 16
-ZIP_MAX_COMMENT = (1 << 16) - 1
-
-# constants for Zip file compression methods
-ZIP_STORED = 0
-ZIP_DEFLATED = 8
-ZIP_BZIP2 = 12
-# Other ZIP compression methods not supported
-
-# 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 = "<4s4H2LH"
-stringEndArchive = "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 = "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 = "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 = "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 = "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 IOError:
-        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 IOError:
-        pass
-    return result
-
-def _EndRecData64(fpin, offset, endrec):
-    """
-    Read the ZIP64 end-of-archive records and use that to update endrec
-    """
-    fpin.seek(offset - sizeEndCentDir64Locator, 2)
-    data = fpin.read(sizeEndCentDir64Locator)
-    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)
-    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 IOError:
-        return None
-    data = fpin.read()
-    if data[0:4] == stringEndArchive and data[-2:] == "\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("")
-        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]
-        endrec = list(struct.unpack(structEndArchive, recData))
-        comment = data[start+sizeEndCentDir:]
-        # check that comment length is correct
-        if endrec[_ECD_COMMENT_SIZE] == len(comment):
-            # Append the archive comment and start offset
-            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
-
-
-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
-        # Standard values:
-        self.compress_type = ZIP_STORED # Type of compression for the file
-        self.comment = ""               # Comment for each file
-        self.extra = ""                 # 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 = 20        # Version which created ZIP archive
-        self.extract_version = 20       # 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 FileHeader(self):
-        """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
-
-        if file_size > ZIP64_LIMIT or compress_size > ZIP64_LIMIT:
-            # File is larger than what fits into a 4 byte integer,
-            # fall back to the ZIP64 extension
-            fmt = '<HHQQ'
-            extra = extra + struct.pack(fmt,
-                    1, struct.calcsize(fmt)-4, file_size, compress_size)
-            file_size = 0xffffffff
-            compress_size = 0xffffffff
-            self.extract_version = max(45, self.extract_version)
-            self.create_version = max(45, self.extract_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):
-        if isinstance(self.filename, unicode):
-            try:
-                return self.filename.encode('ascii'), self.flag_bits
-            except UnicodeEncodeError:
-                return self.filename.encode('utf-8'), self.flag_bits | 0x800
-        else:
-            return self.filename, self.flag_bits
-
-    def _decodeFilename(self):
-        if self.flag_bits & 0x800:
-            return self.filename.decode('utf-8')
-        else:
-            return self.filename
-
-    def _decodeExtra(self):
-        # Try to decode the extra field.
-        extra = self.extra
-        unpack = struct.unpack
-        while extra:
-            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 (0xffffffffffffffffL, 0xffffffffL):
-                    self.file_size = counts[idx]
-                    idx += 1
-
-                if self.compress_size == 0xFFFFFFFFL:
-                    self.compress_size = counts[idx]
-                    idx += 1
-
-                if self.header_offset == 0xffffffffL:
-                    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 = _GenerateCRCTable()
-
-    def _crc32(self, ch, crc):
-        """Compute the CRC32 primitive on one byte."""
-        return ((crc >> 8) & 0xffffff) ^ self.crctable[(crc ^ ord(ch)) & 0xff]
-
-    def __init__(self, pwd):
-        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(chr((self.key1 >> 24) & 255), self.key2)
-
-    def __call__(self, c):
-        """Decrypt a single character."""
-        c = ord(c)
-        k = self.key2 | 2
-        c = c ^ (((k * (k^1)) >> 8) & 255)
-        c = chr(c)
-        self._UpdateKeys(c)
-        return c
-
-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(r'^(?P<chunk>[^\r\n]+)|(?P<newline>\n|\r\n?)')
-
-    def __init__(self, fileobj, mode, zipinfo, decrypter=None):
-        self._fileobj = fileobj
-        self._decrypter = decrypter
-
-        self._compress_type = zipinfo.compress_type
-        self._compress_size = zipinfo.compress_size
-        self._compress_left = zipinfo.compress_size
-
-        if self._compress_type == ZIP_DEFLATED:
-            self._decompressor = zlib.decompressobj(-15)
-        elif self._compress_type == ZIP_BZIP2:
-            self._decompressor = bz2.BZ2Decompressor()
-            self.MIN_READ_SIZE = 900000
-        self._unconsumed = ''
-
-        self._readbuffer = ''
-        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'') & 0xffffffff
-        else:
-            self._expected_crc = None
-
-    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('\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 = ''
-        while limit < 0 or len(line) < limit:
-            readahead = self.peek(2)
-            if readahead == '':
-                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 + '\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)
-            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..
-        """
-        buf = ''
-        if n is None:
-            n = -1
-        while True:
-            if n < 0:
-                data = self.read1(n)
-            elif n > len(buf):
-                data = self.read1(n - len(buf))
-            else:
-                return buf
-            if len(data) == 0:
-                return buf
-            buf += data
-
-    def _update_crc(self, newdata, eof):
-        # 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) & 0xffffffff
-        # Check the CRC if we're at the end of the file
-        if 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."""
-
-        # Simplify algorithm (branching) by transforming negative n to large n.
-        if n < 0 or n is None:
-            n = self.MAX_N
-
-        # Bytes available in read buffer.
-        len_readbuffer = len(self._readbuffer) - self._offset
-
-        # Read from file.
-        if self._compress_left > 0 and n > len_readbuffer + len(self._unconsumed):
-            nbytes = n - len_readbuffer - len(self._unconsumed)
-            nbytes = max(nbytes, self.MIN_READ_SIZE)
-            nbytes = min(nbytes, self._compress_left)
-
-            data = self._fileobj.read(nbytes)
-            self._compress_left -= len(data)
-
-            if data and self._decrypter is not None:
-                data = ''.join(map(self._decrypter, data))
-
-            if self._compress_type == ZIP_STORED:
-                self._update_crc(data, eof=(self._compress_left==0))
-                self._readbuffer = self._readbuffer[self._offset:] + data
-                self._offset = 0
-            else:
-                # Prepare deflated bytes for decompression.
-                self._unconsumed += data
-
-        # Handle unconsumed data.
-        if (len(self._unconsumed) > 0 and n > len_readbuffer and
-            self._compress_type == ZIP_DEFLATED):
-            data = self._decompressor.decompress(
-                self._unconsumed,
-                max(n - len_readbuffer, self.MIN_READ_SIZE)
-            )
-
-            self._unconsumed = self._decompressor.unconsumed_tail
-            eof = len(self._unconsumed) == 0 and self._compress_left == 0
-            if eof:
-                data += self._decompressor.flush()
-
-            self._update_crc(data, eof=eof)
-            self._readbuffer = self._readbuffer[self._offset:] + data
-            self._offset = 0
-        elif (len(self._unconsumed) > 0 and n > len_readbuffer and
-            self._compress_type == ZIP_BZIP2):
-            data = self._decompressor.decompress(self._unconsumed)
-
-            self._unconsumed = ''
-            self._readbuffer = self._readbuffer[self._offset:] + data
-            self._offset = 0
-
-        # Read from buffer.
-        data = self._readbuffer[self._offset: self._offset + n]
-        self._offset += len(data)
-        return data
-
-
-
-class ZipFile:
-    """ Class with methods to open, read, write, close, list zip files.
-
-    z = ZipFile(file, mode="r", compression=ZIP_STORED, allowZip64=False)
-
-    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" or append "a".
-    compression: ZIP_STORED (no compression), ZIP_DEFLATED (requires zlib),
-                 or ZIP_BZIP2 (requires bz2).
-    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
-
-    def __init__(self, file, mode="r", compression=ZIP_STORED, allowZip64=False):
-        """Open the ZIP file with mode read "r", write "w" or append "a"."""
-        if mode not in ("r", "w", "a"):
-            raise RuntimeError('ZipFile() requires mode "r", "w", or "a"')
-
-        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"
-        else:
-            raise RuntimeError, "That compression method is not supported"
-
-        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 = key = mode.replace('b', '')[0]
-        self.pwd = None
-        self.comment = ''
-
-        # Check if we were passed a file-like object
-        if isinstance(file, basestring):
-            self._filePassed = 0
-            self.filename = file
-            modeDict = {'r' : 'rb', 'w': 'wb', 'a' : 'r+b'}
-            try:
-                self.fp = open(file, modeDict[mode])
-            except IOError:
-                if mode == 'a':
-                    mode = key = 'w'
-                    self.fp = open(file, modeDict[mode])
-                else:
-                    raise
-        else:
-            self._filePassed = 1
-            self.fp = file
-            self.filename = getattr(file, 'name', None)
-
-        if key == 'r':
-            self._GetContents()
-        elif key == 'w':
-            pass
-        elif key == 'a':
-            try:                        # See if file is a zip file
-                self._RealGetContents()
-                # seek to start of directory and overwrite
-                self.fp.seek(self.start_dir, 0)
-            except BadZipfile:          # file is not a zip file, just append
-                self.fp.seek(0, 2)
-        else:
-            if not self._filePassed:
-                self.fp.close()
-                self.fp = None
-            raise RuntimeError, 'Mode must be "r", "w" or "a"'
-
-    def __enter__(self):
-        return self
-
-    def __exit__(self, type, value, traceback):
-        self.close()
-
-    def _GetContents(self):
-        """Read the directory, making sure we close the file if the format
-        is bad."""
-        try:
-            self._RealGetContents()
-        except BadZipfile:
-            if not self._filePassed:
-                self.fp.close()
-                self.fp = None
-            raise
-
-    def _RealGetContents(self):
-        """Read in the table of contents for the ZIP file."""
-        fp = self.fp
-        endrec = _EndRecData(fp)
-        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 = cStringIO.StringIO(data)
-        total = 0
-        while total < size_cd:
-            centdir = fp.read(sizeCentralDir)
-            if centdir[0:4] != stringCentralDir:
-                raise BadZipfile, "Bad magic number for central directory"
-            centdir = struct.unpack(structCentralDir, centdir)
-            if self.debug > 2:
-                print centdir
-            filename = fp.read(centdir[_CD_FILENAME_LENGTH])
-            # 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]
-            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
-            x.filename = x._decodeFilename()
-            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."""
-        l = []
-        for data in self.filelist:
-            l.append(data.filename)
-        return l
-
-    def infolist(self):
-        """Return a list of class ZipInfo instances for files in the
-        archive."""
-        return self.filelist
-
-    def printdir(self):
-        """Print a table of contents for the zip file."""
-        print "%-46s %19s %12s" % ("File Name", "Modified    ", "Size")
-        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)
-
-    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.
-                f = self.open(zinfo.filename, "r")
-                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."""
-        self.pwd = pwd
-
-    def read(self, name, pwd=None):
-        """Return file bytes (as a string) for name."""
-        return self.open(name, "r", pwd).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 not self.fp:
-            raise RuntimeError, \
-                  "Attempt to read ZIP archive that was already closed"
-
-        # Only open a new file for instances where we were not
-        # given a file object in the constructor
-        if self._filePassed:
-            zef_file = self.fp
-        else:
-            zef_file = open(self.filename, 'rb')
-
-        # 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)
-
-        zef_file.seek(zinfo.header_offset, 0)
-
-        # Skip the file header:
-        fheader = zef_file.read(sizeFileHeader)
-        if fheader[0:4] != stringFileHeader:
-            raise BadZipfile, "Bad magic number for file header"
-
-        fheader = struct.unpack(structFileHeader, fheader)
-        fname = zef_file.read(fheader[_FH_FILENAME_LENGTH])
-        if fheader[_FH_EXTRA_FIELD_LENGTH]:
-            zef_file.read(fheader[_FH_EXTRA_FIELD_LENGTH])
-
-        if fname != zinfo.orig_filename:
-            raise BadZipfile, \
-                      'File name in directory "%s" and header "%s" 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.
-            bytes = zef_file.read(12)
-            h = map(zd, bytes[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 ord(h[11]) != check_byte:
-                raise RuntimeError("Bad password for file", name)
-
-        return  ZipExtFile(zef_file, mode, zinfo, zd)
-
-    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)
-
-    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.
-        # Strip trailing path separator, unless it represents the root.
-        if (targetpath[-1:] in (os.path.sep, os.path.altsep)
-            and len(os.path.splitdrive(targetpath)[1]) > 1):
-            targetpath = targetpath[:-1]
-
-        # don't include leading "/" from file name if present
-        if member.filename[0] == '/':
-            targetpath = os.path.join(targetpath, member.filename[1:])
-        else:
-            targetpath = os.path.join(targetpath, member.filename)
-
-        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
-
-        source = self.open(member, pwd=pwd)
-        target = file(targetpath, "wb")
-        shutil.copyfileobj(source, target)
-        source.close()
-        target.close()
-
-        return targetpath
-
-    def _writecheck(self, zinfo):
-        """Check for errors before writing a file to the archive."""
-        if zinfo.filename in self.NameToInfo:
-            if self.debug:      # Warning for duplicate names
-                print "Duplicate name:", zinfo.filename
-        if self.mode not in ("w", "a"):
-            raise RuntimeError, 'write() requires mode "w" or "a"'
-        if not self.fp:
-            raise RuntimeError, \
-                  "Attempt to write ZIP archive that was already closed"
-        if zinfo.compress_type == ZIP_DEFLATED and not zlib:
-            raise RuntimeError, \
-                  "Compression requires the (missing) zlib module"
-        if zinfo.compress_type == ZIP_BZIP2 and not bz2:
-            raise RuntimeError, \
-                  "Compression requires the (missing) bz2 module"
-        if zinfo.compress_type not in (ZIP_STORED, ZIP_DEFLATED, ZIP_BZIP2):
-            raise RuntimeError, \
-                  "That compression method is not supported"
-        if zinfo.file_size > ZIP64_LIMIT:
-            if not self._allowZip64:
-                raise LargeZipFile("Filesize would require ZIP64 extensions")
-        if zinfo.header_offset > ZIP64_LIMIT:
-            if not self._allowZip64:
-                raise LargeZipFile("Zipfile size 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) << 16L      # Unix attributes
-        if 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
-        zinfo.header_offset = self.fp.tell()    # Start of header bytes
-
-        self._writecheck(zinfo)
-        self._didModify = True
-
-        if isdir:
-            zinfo.file_size = 0
-            zinfo.compress_size = 0
-            zinfo.CRC = 0
-            self.filelist.append(zinfo)
-            self.NameToInfo[zinfo.filename] = zinfo
-            self.fp.write(zinfo.FileHeader())
-            return
-
-        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
-            zinfo.file_size = file_size = 0
-            self.fp.write(zinfo.FileHeader())
-            if zinfo.compress_type == ZIP_DEFLATED:
-                cmpr = zlib.compressobj(zlib.Z_DEFAULT_COMPRESSION,
-                     zlib.DEFLATED, -15)
-            elif zinfo.compress_type == ZIP_BZIP2:
-                cmpr = bz2.BZ2Compressor()
-            else:
-                cmpr = None
-            while 1:
-                buf = fp.read(1024 * 8)
-                if not buf:
-                    break
-                file_size = file_size + len(buf)
-                CRC = crc32(buf, CRC) & 0xffffffff
-                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
-        # Seek backwards and write CRC and file sizes
-        position = self.fp.tell()       # Preserve current position in file
-        self.fp.seek(zinfo.header_offset + 14, 0)
-        self.fp.write(struct.pack("<LLL", zinfo.CRC, zinfo.compress_size,
-              zinfo.file_size))
-        self.fp.seek(position, 0)
-        self.filelist.append(zinfo)
-        self.NameToInfo[zinfo.filename] = zinfo
-
-    def writestr(self, zinfo_or_arcname, bytes, compress_type=None):
-        """Write a file into the archive.  The contents is the string
-        'bytes'.  'zinfo_or_arcname' is either a ZipInfo instance or
-        the name of the file in the archive."""
-        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
-            zinfo.external_attr = 0600 << 16
-        else:
-            zinfo = zinfo_or_arcname
-
-        if not self.fp:
-            raise RuntimeError(
-                  "Attempt to write to ZIP archive that was already closed")
-
-        if compress_type is not None:
-            zinfo.compress_type = compress_type
-
-        zinfo.file_size = len(bytes)            # Uncompressed size
-        zinfo.header_offset = self.fp.tell()    # Start of header bytes
-        self._writecheck(zinfo)
-        self._didModify = True
-        zinfo.CRC = crc32(bytes) & 0xffffffff       # CRC-32 checksum
-        if zinfo.compress_type == ZIP_DEFLATED:
-            co = zlib.compressobj(zlib.Z_DEFAULT_COMPRESSION,
-                 zlib.DEFLATED, -15)
-            bytes = co.compress(bytes) + co.flush()
-            zinfo.compress_size = len(bytes)    # Compressed size
-        elif zinfo.compress_type == ZIP_BZIP2:
-            co = bz2.BZ2Compressor()
-            bytes = co.compress(bytes) + co.flush()
-            zinfo.compress_size = len(bytes)    # Compressed size
-        else:
-            zinfo.compress_size = zinfo.file_size
-        zinfo.header_offset = self.fp.tell()    # Start of header bytes
-        self.fp.write(zinfo.FileHeader())
-        self.fp.write(bytes)
-        self.fp.flush()
-        if zinfo.flag_bits & 0x08:
-            # Write CRC and file sizes after the file data
-            self.fp.write(struct.pack("<LLL", zinfo.CRC, zinfo.compress_size,
-                  zinfo.file_size))
-        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" and "a" write the ending
-        records."""
-        if self.fp is None:
-            return
-
-        if self.mode in ("w", "a") and self._didModify: # write ending records
-            count = 0
-            pos1 = self.fp.tell()
-            for zinfo in self.filelist:         # write central directory
-                count = count + 1
-                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 = 0xffffffffL
-                else:
-                    header_offset = zinfo.header_offset
-
-                extra_data = zinfo.extra
-                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
-
-                    extract_version = max(45, zinfo.extract_version)
-                    create_version = max(45, zinfo.create_version)
-                else:
-                    extract_version = zinfo.extract_version
-                    create_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 >>sys.stderr, (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)
-                    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 = count
-            centDirSize = pos2 - pos1
-            centDirOffset = pos1
-            if (centDirCount >= ZIP_FILECOUNT_LIMIT or
-                centDirOffset > ZIP64_LIMIT or
-                centDirSize > ZIP64_LIMIT):
-                # Need to write the ZIP64 end-of-archive records
-                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)
-
-            # check for valid comment length
-            if len(self.comment) >= ZIP_MAX_COMMENT:
-                if self.debug > 0:
-                    msg = 'Archive comment is too long; truncating to %d bytes' \
-                          % ZIP_MAX_COMMENT
-                self.comment = self.comment[:ZIP_MAX_COMMENT]
-
-            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()
-
-        if not self._filePassed:
-            self.fp.close()
-        self.fp = None
-
-
-class PyZipFile(ZipFile):
-    """Class to create ZIP archives with Python library files and packages."""
-
-    def writepy(self, pathname, basename = ""):
-        """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.pyo or module.pyc.
-        This method will compile the module.py into module.pyc if
-        necessary.
-        """
-        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)  # Recursive call
-                    elif ext == ".py":
-                        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":
-                        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).
-        """
-        file_py  = pathname + ".py"
-        file_pyc = pathname + ".pyc"
-        file_pyo = pathname + ".pyo"
-        if os.path.isfile(file_pyo) and \
-                            os.stat(file_pyo).st_mtime >= os.stat(file_py).st_mtime:
-            fname = file_pyo    # Use .pyo file
-        elif not os.path.isfile(file_pyc) or \
-             os.stat(file_pyc).st_mtime < os.stat(file_py).st_mtime:
-            import py_compile
-            if self.debug:
-                print "Compiling", file_py
-            try:
-                py_compile.compile(file_py, file_pyc, None, True)
-            except py_compile.PyCompileError,err:
-                print err.msg
-            fname = file_pyc
-        else:
-            fname = file_pyc
-        archivename = os.path.split(fname)[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)
-        zf = ZipFile(args[1], 'r')
-        zf.printdir()
-        zf.close()
-
-    elif args[0] == '-t':
-        if len(args) != 2:
-            print USAGE
-            sys.exit(1)
-        zf = ZipFile(args[1], 'r')
-        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)
-
-        zf = ZipFile(args[1], 'r')
-        out = args[2]
-        for path in zf.namelist():
-            if path.startswith('./'):
-                tgt = os.path.join(out, path[2:])
-            else:
-                tgt = os.path.join(out, path)
-
-            tgtdir = os.path.dirname(tgt)
-            if not os.path.exists(tgtdir):
-                os.makedirs(tgtdir)
-            with open(tgt, 'wb') as fp:
-                fp.write(zf.read(path))
-        zf.close()
-
-    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):
-                for nm in os.listdir(path):
-                    addToZip(zf,
-                            os.path.join(path, nm), os.path.join(zippath, nm))
-            # else: ignore
-
-        zf = ZipFile(args[1], 'w', allowZip64=True)
-        for src in args[2:]:
-            addToZip(zf, src, os.path.basename(src))
-
-        zf.close()
-
-if __name__ == "__main__":
-    main()

--- a/2.00/zipfile271.diff	Thu Nov 25 00:03:29 2010 +0000
+++ b/2.00/zipfile271.diff	Mon Nov 29 01:24:22 2010 +0000
@@ -1,5 +1,5 @@
---- ../../zipfile.py	2010-11-24 01:47:05.000000000 +0000
-+++ zipfile271.py	2010-11-24 01:51:31.000000000 +0000
+--- /usr/local/lib/python2.7/zipfile.py	2010-11-29 00:56:38.000000000 +0000
++++ zipfile271.py	2010-11-29 01:20:17.000000000 +0000
 @@ -1,6 +1,7 @@
  """
  Read and write ZIP files.
@@ -31,7 +31,7 @@
  # Other ZIP compression methods not supported
  
  # Below are some formats and associated data for reading/writing headers using
-@@ -477,6 +484,9 @@
+@@ -483,6 +490,9 @@
  
          if self._compress_type == ZIP_DEFLATED:
              self._decompressor = zlib.decompressobj(-15)
@@ -41,7 +41,7 @@
          self._unconsumed = ''
  
          self._readbuffer = ''
-@@ -635,6 +645,13 @@
+@@ -641,6 +651,13 @@
              self._update_crc(data, eof=eof)
              self._readbuffer = self._readbuffer[self._offset:] + data
              self._offset = 0
@@ -55,7 +55,7 @@
  
          # Read from buffer.
          data = self._readbuffer[self._offset: self._offset + n]
-@@ -651,7 +668,8 @@
+@@ -657,7 +674,8 @@
      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" or append "a".
@@ -65,7 +65,7 @@
      allowZip64: if True ZipFile will create files with ZIP64 extensions when
                  needed, otherwise it will raise an exception when this would
                  be necessary.
-@@ -671,6 +689,10 @@
+@@ -677,6 +695,10 @@
              if not zlib:
                  raise RuntimeError,\
                        "Compression requires the (missing) zlib module"
@@ -76,7 +76,7 @@
          else:
              raise RuntimeError, "That compression method is not supported"
  
-@@ -994,7 +1016,10 @@
+@@ -1011,7 +1033,10 @@
          if zinfo.compress_type == ZIP_DEFLATED and not zlib:
              raise RuntimeError, \
                    "Compression requires the (missing) zlib module"
@@ -88,7 +88,7 @@
              raise RuntimeError, \
                    "That compression method is not supported"
          if zinfo.file_size > ZIP64_LIMIT:
-@@ -1055,6 +1080,8 @@
+@@ -1072,6 +1097,8 @@
              if zinfo.compress_type == ZIP_DEFLATED:
                  cmpr = zlib.compressobj(zlib.Z_DEFAULT_COMPRESSION,
                       zlib.DEFLATED, -15)
@@ -97,7 +97,7 @@
              else:
                  cmpr = None
              while 1:
-@@ -1115,6 +1142,10 @@
+@@ -1132,6 +1159,10 @@
                   zlib.DEFLATED, -15)
              bytes = co.compress(bytes) + co.flush()
              zinfo.compress_size = len(bytes)    # Compressed size

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/2.00/zipfile271.py	Mon Nov 29 01:24:22 2010 +0000
@@ -0,0 +1,1468 @@
+"""
+Read and write ZIP files.
+"""
+# Improved by Chortos-2 in 2010 (added bzip2 support)
+import struct, os, time, sys, shutil
+import binascii, cStringIO, stat
+import io
+import re
+
+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
+
+__all__ = ["BadZipfile", "error", "ZIP_STORED", "ZIP_DEFLATED", "is_zipfile",
+           "ZipInfo", "ZipFile", "PyZipFile", "LargeZipFile", "ZIP_BZIP2" ]
+
+class BadZipfile(Exception):
+    pass
+
+
+class LargeZipFile(Exception):
+    """
+    Raised when writing a zipfile, the zipfile requires ZIP64 extensions
+    and those extensions are disabled.
+    """
+
+error = BadZipfile      # The exception raised by this module
+
+ZIP64_LIMIT = (1 << 31) - 1
+ZIP_FILECOUNT_LIMIT = 1 << 16
+ZIP_MAX_COMMENT = (1 << 16) - 1
+
+# constants for Zip file compression methods
+ZIP_STORED = 0
+ZIP_DEFLATED = 8
+ZIP_BZIP2 = 12
+# Other ZIP compression methods not supported
+
+# 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 = "<4s4H2LH"
+stringEndArchive = "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 = "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 = "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 = "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 = "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 IOError:
+        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 IOError:
+        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 IOError:
+        # 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)
+    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)
+    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 IOError:
+        return None
+    data = fpin.read()
+    if data[0:4] == stringEndArchive and data[-2:] == "\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("")
+        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]
+        endrec = list(struct.unpack(structEndArchive, recData))
+        comment = data[start+sizeEndCentDir:]
+        # check that comment length is correct
+        if endrec[_ECD_COMMENT_SIZE] == len(comment):
+            # Append the archive comment and start offset
+            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
+
+
+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
+        # Standard values:
+        self.compress_type = ZIP_STORED # Type of compression for the file
+        self.comment = ""               # Comment for each file
+        self.extra = ""                 # 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 = 20        # Version which created ZIP archive
+        self.extract_version = 20       # 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 FileHeader(self):
+        """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
+
+        if file_size > ZIP64_LIMIT or compress_size > ZIP64_LIMIT:
+            # File is larger than what fits into a 4 byte integer,
+            # fall back to the ZIP64 extension
+            fmt = '<HHQQ'
+            extra = extra + struct.pack(fmt,
+                    1, struct.calcsize(fmt)-4, file_size, compress_size)
+            file_size = 0xffffffff
+            compress_size = 0xffffffff
+            self.extract_version = max(45, self.extract_version)
+            self.create_version = max(45, self.extract_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):
+        if isinstance(self.filename, unicode):
+            try:
+                return self.filename.encode('ascii'), self.flag_bits
+            except UnicodeEncodeError:
+                return self.filename.encode('utf-8'), self.flag_bits | 0x800
+        else:
+            return self.filename, self.flag_bits
+
+    def _decodeFilename(self):
+        if self.flag_bits & 0x800:
+            return self.filename.decode('utf-8')
+        else:
+            return self.filename
+
+    def _decodeExtra(self):
+        # Try to decode the extra field.
+        extra = self.extra
+        unpack = struct.unpack
+        while extra:
+            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 (0xffffffffffffffffL, 0xffffffffL):
+                    self.file_size = counts[idx]
+                    idx += 1
+
+                if self.compress_size == 0xFFFFFFFFL:
+                    self.compress_size = counts[idx]
+                    idx += 1
+
+                if self.header_offset == 0xffffffffL:
+                    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 = _GenerateCRCTable()
+
+    def _crc32(self, ch, crc):
+        """Compute the CRC32 primitive on one byte."""
+        return ((crc >> 8) & 0xffffff) ^ self.crctable[(crc ^ ord(ch)) & 0xff]
+
+    def __init__(self, pwd):
+        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(chr((self.key1 >> 24) & 255), self.key2)
+
+    def __call__(self, c):
+        """Decrypt a single character."""
+        c = ord(c)
+        k = self.key2 | 2
+        c = c ^ (((k * (k^1)) >> 8) & 255)
+        c = chr(c)
+        self._UpdateKeys(c)
+        return c
+
+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(r'^(?P<chunk>[^\r\n]+)|(?P<newline>\n|\r\n?)')
+
+    def __init__(self, fileobj, mode, zipinfo, decrypter=None):
+        self._fileobj = fileobj
+        self._decrypter = decrypter
+
+        self._compress_type = zipinfo.compress_type
+        self._compress_size = zipinfo.compress_size
+        self._compress_left = zipinfo.compress_size
+
+        if self._compress_type == ZIP_DEFLATED:
+            self._decompressor = zlib.decompressobj(-15)
+        elif self._compress_type == ZIP_BZIP2:
+            self._decompressor = bz2.BZ2Decompressor()
+            self.MIN_READ_SIZE = 900000
+        self._unconsumed = ''
+
+        self._readbuffer = ''
+        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'') & 0xffffffff
+        else:
+            self._expected_crc = None
+
+    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('\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 = ''
+        while limit < 0 or len(line) < limit:
+            readahead = self.peek(2)
+            if readahead == '':
+                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 + '\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)
+            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..
+        """
+        buf = ''
+        if n is None:
+            n = -1
+        while True:
+            if n < 0:
+                data = self.read1(n)
+            elif n > len(buf):
+                data = self.read1(n - len(buf))
+            else:
+                return buf
+            if len(data) == 0:
+                return buf
+            buf += data
+
+    def _update_crc(self, newdata, eof):
+        # 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) & 0xffffffff
+        # Check the CRC if we're at the end of the file
+        if 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."""
+
+        # Simplify algorithm (branching) by transforming negative n to large n.
+        if n < 0 or n is None:
+            n = self.MAX_N
+
+        # Bytes available in read buffer.
+        len_readbuffer = len(self._readbuffer) - self._offset
+
+        # Read from file.
+        if self._compress_left > 0 and n > len_readbuffer + len(self._unconsumed):
+            nbytes = n - len_readbuffer - len(self._unconsumed)
+            nbytes = max(nbytes, self.MIN_READ_SIZE)
+            nbytes = min(nbytes, self._compress_left)
+
+            data = self._fileobj.read(nbytes)
+            self._compress_left -= len(data)
+
+            if data and self._decrypter is not None:
+                data = ''.join(map(self._decrypter, data))
+
+            if self._compress_type == ZIP_STORED:
+                self._update_crc(data, eof=(self._compress_left==0))
+                self._readbuffer = self._readbuffer[self._offset:] + data
+                self._offset = 0
+            else:
+                # Prepare deflated bytes for decompression.
+                self._unconsumed += data
+
+        # Handle unconsumed data.
+        if (len(self._unconsumed) > 0 and n > len_readbuffer and
+            self._compress_type == ZIP_DEFLATED):
+            data = self._decompressor.decompress(
+                self._unconsumed,
+                max(n - len_readbuffer, self.MIN_READ_SIZE)
+            )
+
+            self._unconsumed = self._decompressor.unconsumed_tail
+            eof = len(self._unconsumed) == 0 and self._compress_left == 0
+            if eof:
+                data += self._decompressor.flush()
+
+            self._update_crc(data, eof=eof)
+            self._readbuffer = self._readbuffer[self._offset:] + data
+            self._offset = 0
+        elif (len(self._unconsumed) > 0 and n > len_readbuffer and
+            self._compress_type == ZIP_BZIP2):
+            data = self._decompressor.decompress(self._unconsumed)
+
+            self._unconsumed = ''
+            self._readbuffer = self._readbuffer[self._offset:] + data
+            self._offset = 0
+
+        # Read from buffer.
+        data = self._readbuffer[self._offset: self._offset + n]
+        self._offset += len(data)
+        return data
+
+
+
+class ZipFile:
+    """ Class with methods to open, read, write, close, list zip files.
+
+    z = ZipFile(file, mode="r", compression=ZIP_STORED, allowZip64=False)
+
+    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" or append "a".
+    compression: ZIP_STORED (no compression), ZIP_DEFLATED (requires zlib),
+                 or ZIP_BZIP2 (requires bz2).
+    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
+
+    def __init__(self, file, mode="r", compression=ZIP_STORED, allowZip64=False):
+        """Open the ZIP file with mode read "r", write "w" or append "a"."""
+        if mode not in ("r", "w", "a"):
+            raise RuntimeError('ZipFile() requires mode "r", "w", or "a"')
+
+        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"
+        else:
+            raise RuntimeError, "That compression method is not supported"
+
+        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 = key = mode.replace('b', '')[0]
+        self.pwd = None
+        self.comment = ''
+
+        # Check if we were passed a file-like object
+        if isinstance(file, basestring):
+            self._filePassed = 0
+            self.filename = file
+            modeDict = {'r' : 'rb', 'w': 'wb', 'a' : 'r+b'}
+            try:
+                self.fp = open(file, modeDict[mode])
+            except IOError:
+                if mode == 'a':
+                    mode = key = 'w'
+                    self.fp = open(file, modeDict[mode])
+                else:
+                    raise
+        else:
+            self._filePassed = 1
+            self.fp = file
+            self.filename = getattr(file, 'name', None)
+
+        if key == 'r':
+            self._GetContents()
+        elif key == 'w':
+            # set the modified flag so central directory gets written
+            # even if no files are added to the archive
+            self._didModify = True
+        elif key == 'a':
+            try:
+                # See if file is a zip file
+                self._RealGetContents()
+                # seek to start of directory and overwrite
+                self.fp.seek(self.start_dir, 0)
+            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
+        else:
+            if not self._filePassed:
+                self.fp.close()
+                self.fp = None
+            raise RuntimeError, 'Mode must be "r", "w" or "a"'
+
+    def __enter__(self):
+        return self
+
+    def __exit__(self, type, value, traceback):
+        self.close()
+
+    def _GetContents(self):
+        """Read the directory, making sure we close the file if the format
+        is bad."""
+        try:
+            self._RealGetContents()
+        except BadZipfile:
+            if not self._filePassed:
+                self.fp.close()
+                self.fp = None
+            raise
+
+    def _RealGetContents(self):
+        """Read in the table of contents for the ZIP file."""
+        fp = self.fp
+        try:
+            endrec = _EndRecData(fp)
+        except IOError:
+            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 = cStringIO.StringIO(data)
+        total = 0
+        while total < size_cd:
+            centdir = fp.read(sizeCentralDir)
+            if centdir[0:4] != stringCentralDir:
+                raise BadZipfile, "Bad magic number for central directory"
+            centdir = struct.unpack(structCentralDir, centdir)
+            if self.debug > 2:
+                print centdir
+            filename = fp.read(centdir[_CD_FILENAME_LENGTH])
+            # 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]
+            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
+            x.filename = x._decodeFilename()
+            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."""
+        l = []
+        for data in self.filelist:
+            l.append(data.filename)
+        return l
+
+    def infolist(self):
+        """Return a list of class ZipInfo instances for files in the
+        archive."""
+        return self.filelist
+
+    def printdir(self):
+        """Print a table of contents for the zip file."""
+        print "%-46s %19s %12s" % ("File Name", "Modified    ", "Size")
+        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)
+
+    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.
+                f = self.open(zinfo.filename, "r")
+                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."""
+        self.pwd = pwd
+
+    def read(self, name, pwd=None):
+        """Return file bytes (as a string) for name."""
+        return self.open(name, "r", pwd).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 not self.fp:
+            raise RuntimeError, \
+                  "Attempt to read ZIP archive that was already closed"
+
+        # Only open a new file for instances where we were not
+        # given a file object in the constructor
+        if self._filePassed:
+            zef_file = self.fp
+        else:
+            zef_file = open(self.filename, 'rb')
+
+        # 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)
+
+        zef_file.seek(zinfo.header_offset, 0)
+
+        # Skip the file header:
+        fheader = zef_file.read(sizeFileHeader)
+        if fheader[0:4] != stringFileHeader:
+            raise BadZipfile, "Bad magic number for file header"
+
+        fheader = struct.unpack(structFileHeader, fheader)
+        fname = zef_file.read(fheader[_FH_FILENAME_LENGTH])
+        if fheader[_FH_EXTRA_FIELD_LENGTH]:
+            zef_file.read(fheader[_FH_EXTRA_FIELD_LENGTH])
+
+        if fname != zinfo.orig_filename:
+            raise BadZipfile, \
+                      'File name in directory "%s" and header "%s" 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.
+            bytes = zef_file.read(12)
+            h = map(zd, bytes[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 ord(h[11]) != check_byte:
+                raise RuntimeError("Bad password for file", name)
+
+        return  ZipExtFile(zef_file, mode, zinfo, zd)
+
+    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)
+
+    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.
+        # Strip trailing path separator, unless it represents the root.
+        if (targetpath[-1:] in (os.path.sep, os.path.altsep)
+            and len(os.path.splitdrive(targetpath)[1]) > 1):
+            targetpath = targetpath[:-1]
+
+        # don't include leading "/" from file name if present
+        if member.filename[0] == '/':
+            targetpath = os.path.join(targetpath, member.filename[1:])
+        else:
+            targetpath = os.path.join(targetpath, member.filename)
+
+        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
+
+        source = self.open(member, pwd=pwd)
+        target = file(targetpath, "wb")
+        shutil.copyfileobj(source, target)
+        source.close()
+        target.close()
+
+        return targetpath
+
+    def _writecheck(self, zinfo):
+        """Check for errors before writing a file to the archive."""
+        if zinfo.filename in self.NameToInfo:
+            if self.debug:      # Warning for duplicate names
+                print "Duplicate name:", zinfo.filename
+        if self.mode not in ("w", "a"):
+            raise RuntimeError, 'write() requires mode "w" or "a"'
+        if not self.fp:
+            raise RuntimeError, \
+                  "Attempt to write ZIP archive that was already closed"
+        if zinfo.compress_type == ZIP_DEFLATED and not zlib:
+            raise RuntimeError, \
+                  "Compression requires the (missing) zlib module"
+        if zinfo.compress_type == ZIP_BZIP2 and not bz2:
+            raise RuntimeError, \
+                  "Compression requires the (missing) bz2 module"
+        if zinfo.compress_type not in (ZIP_STORED, ZIP_DEFLATED, ZIP_BZIP2):
+            raise RuntimeError, \
+                  "That compression method is not supported"
+        if zinfo.file_size > ZIP64_LIMIT:
+            if not self._allowZip64:
+                raise LargeZipFile("Filesize would require ZIP64 extensions")
+        if zinfo.header_offset > ZIP64_LIMIT:
+            if not self._allowZip64:
+                raise LargeZipFile("Zipfile size 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) << 16L      # Unix attributes
+        if 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
+        zinfo.header_offset = self.fp.tell()    # Start of header bytes
+
+        self._writecheck(zinfo)
+        self._didModify = True
+
+        if isdir:
+            zinfo.file_size = 0
+            zinfo.compress_size = 0
+            zinfo.CRC = 0
+            self.filelist.append(zinfo)
+            self.NameToInfo[zinfo.filename] = zinfo
+            self.fp.write(zinfo.FileHeader())
+            return
+
+        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
+            zinfo.file_size = file_size = 0
+            self.fp.write(zinfo.FileHeader())
+            if zinfo.compress_type == ZIP_DEFLATED:
+                cmpr = zlib.compressobj(zlib.Z_DEFAULT_COMPRESSION,
+                     zlib.DEFLATED, -15)
+            elif zinfo.compress_type == ZIP_BZIP2:
+                cmpr = bz2.BZ2Compressor()
+            else:
+                cmpr = None
+            while 1:
+                buf = fp.read(1024 * 8)
+                if not buf:
+                    break
+                file_size = file_size + len(buf)
+                CRC = crc32(buf, CRC) & 0xffffffff
+                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
+        # Seek backwards and write CRC and file sizes
+        position = self.fp.tell()       # Preserve current position in file
+        self.fp.seek(zinfo.header_offset + 14, 0)
+        self.fp.write(struct.pack("<LLL", zinfo.CRC, zinfo.compress_size,
+              zinfo.file_size))
+        self.fp.seek(position, 0)
+        self.filelist.append(zinfo)
+        self.NameToInfo[zinfo.filename] = zinfo
+
+    def writestr(self, zinfo_or_arcname, bytes, compress_type=None):
+        """Write a file into the archive.  The contents is the string
+        'bytes'.  'zinfo_or_arcname' is either a ZipInfo instance or
+        the name of the file in the archive."""
+        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
+            zinfo.external_attr = 0600 << 16
+        else:
+            zinfo = zinfo_or_arcname
+
+        if not self.fp:
+            raise RuntimeError(
+                  "Attempt to write to ZIP archive that was already closed")
+
+        if compress_type is not None:
+            zinfo.compress_type = compress_type
+
+        zinfo.file_size = len(bytes)            # Uncompressed size
+        zinfo.header_offset = self.fp.tell()    # Start of header bytes
+        self._writecheck(zinfo)
+        self._didModify = True
+        zinfo.CRC = crc32(bytes) & 0xffffffff       # CRC-32 checksum
+        if zinfo.compress_type == ZIP_DEFLATED:
+            co = zlib.compressobj(zlib.Z_DEFAULT_COMPRESSION,
+                 zlib.DEFLATED, -15)
+            bytes = co.compress(bytes) + co.flush()
+            zinfo.compress_size = len(bytes)    # Compressed size
+        elif zinfo.compress_type == ZIP_BZIP2:
+            co = bz2.BZ2Compressor()
+            bytes = co.compress(bytes) + co.flush()
+            zinfo.compress_size = len(bytes)    # Compressed size
+        else:
+            zinfo.compress_size = zinfo.file_size
+        zinfo.header_offset = self.fp.tell()    # Start of header bytes
+        self.fp.write(zinfo.FileHeader())
+        self.fp.write(bytes)
+        self.fp.flush()
+        if zinfo.flag_bits & 0x08:
+            # Write CRC and file sizes after the file data
+            self.fp.write(struct.pack("<LLL", zinfo.CRC, zinfo.compress_size,
+                  zinfo.file_size))
+        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" and "a" write the ending
+        records."""
+        if self.fp is None:
+            return
+
+        if self.mode in ("w", "a") and self._didModify: # write ending records
+            count = 0
+            pos1 = self.fp.tell()
+            for zinfo in self.filelist:         # write central directory
+                count = count + 1
+                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 = 0xffffffffL
+                else:
+                    header_offset = zinfo.header_offset
+
+                extra_data = zinfo.extra
+                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
+
+                    extract_version = max(45, zinfo.extract_version)
+                    create_version = max(45, zinfo.create_version)
+                else:
+                    extract_version = zinfo.extract_version
+                    create_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 >>sys.stderr, (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)
+                    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 = count
+            centDirSize = pos2 - pos1
+            centDirOffset = pos1
+            if (centDirCount >= ZIP_FILECOUNT_LIMIT or
+                centDirOffset > ZIP64_LIMIT or
+                centDirSize > ZIP64_LIMIT):
+                # Need to write the ZIP64 end-of-archive records
+                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)
+
+            # check for valid comment length
+            if len(self.comment) >= ZIP_MAX_COMMENT:
+                if self.debug > 0:
+                    msg = 'Archive comment is too long; truncating to %d bytes' \
+                          % ZIP_MAX_COMMENT
+                self.comment = self.comment[:ZIP_MAX_COMMENT]
+
+            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()
+
+        if not self._filePassed:
+            self.fp.close()
+        self.fp = None
+
+
+class PyZipFile(ZipFile):
+    """Class to create ZIP archives with Python library files and packages."""
+
+    def writepy(self, pathname, basename = ""):
+        """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.pyo or module.pyc.
+        This method will compile the module.py into module.pyc if
+        necessary.
+        """
+        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)  # Recursive call
+                    elif ext == ".py":
+                        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":
+                        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).
+        """
+        file_py  = pathname + ".py"
+        file_pyc = pathname + ".pyc"
+        file_pyo = pathname + ".pyo"
+        if os.path.isfile(file_pyo) and \
+                            os.stat(file_pyo).st_mtime >= os.stat(file_py).st_mtime:
+            fname = file_pyo    # Use .pyo file
+        elif not os.path.isfile(file_pyc) or \
+             os.stat(file_pyc).st_mtime < os.stat(file_py).st_mtime:
+            import py_compile
+            if self.debug:
+                print "Compiling", file_py
+            try:
+                py_compile.compile(file_py, file_pyc, None, True)
+            except py_compile.PyCompileError,err:
+                print err.msg
+            fname = file_pyc
+        else:
+            fname = file_pyc
+        archivename = os.path.split(fname)[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)
+        zf = ZipFile(args[1], 'r')
+        zf.printdir()
+        zf.close()
+
+    elif args[0] == '-t':
+        if len(args) != 2:
+            print USAGE
+            sys.exit(1)
+        zf = ZipFile(args[1], 'r')
+        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)
+
+        zf = ZipFile(args[1], 'r')
+        out = args[2]
+        for path in zf.namelist():
+            if path.startswith('./'):
+                tgt = os.path.join(out, path[2:])
+            else:
+                tgt = os.path.join(out, path)
+
+            tgtdir = os.path.dirname(tgt)
+            if not os.path.exists(tgtdir):
+                os.makedirs(tgtdir)
+            with open(tgt, 'wb') as fp:
+                fp.write(zf.read(path))
+        zf.close()
+
+    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):
+                for nm in os.listdir(path):
+                    addToZip(zf,
+                            os.path.join(path, nm), os.path.join(zippath, nm))
+            # else: ignore
+
+        zf = ZipFile(args[1], 'w', allowZip64=True)
+        for src in args[2:]:
+            addToZip(zf, src, os.path.basename(src))
+
+        zf.close()
+
+if __name__ == "__main__":
+    main()

--- a/2.00/zipfile31.py	Thu Nov 25 00:03:29 2010 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,1476 +0,0 @@
-"""
-Read and write ZIP files.
-
-XXX references to utf-8 need further investigation.
-"""
-# Improved by Chortos-2 in 2010 (added bzip2 support)
-import struct, os, time, sys, shutil
-import binascii, io, stat
-
-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
-
-__all__ = ["BadZipfile", "error", "ZIP_STORED", "ZIP_DEFLATED", "is_zipfile",
-           "ZipInfo", "ZipFile", "PyZipFile", "LargeZipFile", "ZIP_BZIP2" ]
-
-class BadZipfile(Exception):
-    pass
-
-
-class LargeZipFile(Exception):
-    """
-    Raised when writing a zipfile, the zipfile requires ZIP64 extensions
-    and those extensions are disabled.
-    """
-
-error = BadZipfile      # The exception raised by this module
-
-ZIP64_LIMIT = (1 << 31) - 1
-ZIP_FILECOUNT_LIMIT = 1 << 16
-ZIP_MAX_COMMENT = (1 << 16) - 1
-
-# constants for Zip file compression methods
-ZIP_STORED = 0
-ZIP_DEFLATED = 8
-ZIP_BZIP2 = 12
-# Other ZIP compression methods not supported
-
-# 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 IOError:
-        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 IOError:
-        pass
-    return result
-
-def _EndRecData64(fpin, offset, endrec):
-    """
-    Read the ZIP64 end-of-archive records and use that to update endrec
-    """
-    fpin.seek(offset - sizeEndCentDir64Locator, 2)
-    data = fpin.read(sizeEndCentDir64Locator)
-    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)
-    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 IOError:
-        return None
-    data = fpin.read()
-    if 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]
-        endrec = list(struct.unpack(structEndArchive, recData))
-        comment = data[start+sizeEndCentDir:]
-        # check that comment length is correct
-        if endrec[_ECD_COMMENT_SIZE] == len(comment):
-            # Append the archive comment and start offset
-            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
-
-
-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
-        # 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 = 20        # Version which created ZIP archive
-        self.extract_version = 20       # 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 FileHeader(self):
-        """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
-
-        if file_size > ZIP64_LIMIT or compress_size > ZIP64_LIMIT:
-            # File is larger than what fits into a 4 byte integer,
-            # fall back to the ZIP64 extension
-            fmt = '<HHQQ'
-            extra = extra + struct.pack(fmt,
-                    1, struct.calcsize(fmt)-4, file_size, compress_size)
-            file_size = 0xffffffff
-            compress_size = 0xffffffff
-            self.extract_version = max(45, self.extract_version)
-            self.create_version = max(45, self.extract_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 extra:
-            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 = _GenerateCRCTable()
-
-    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):
-        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 ZipExtFile:
-    """File-like object for reading an archive member.
-       Is returned by ZipFile.open().
-    """
-
-    def __init__(self, fileobj, zipinfo, decrypt=None):
-        self.fileobj = fileobj
-        self.decrypter = decrypt
-        self.bytes_read = 0
-        self.rawbuffer = b''
-        self.readbuffer = b''
-        self.linebuffer = b''
-        self.eof = False
-        self.univ_newlines = False
-        self.nlSeps = (b"\n", )
-        self.lastdiscard = b''
-
-        self.compress_type = zipinfo.compress_type
-        self.compress_size = zipinfo.compress_size
-
-        self.closed  = False
-        self.mode    = "r"
-        self.name = zipinfo.filename
-
-        # read from compressed files in 64k blocks
-        self.compreadsize = 64*1024
-        if self.compress_type == ZIP_DEFLATED:
-            self.dc = zlib.decompressobj(-15)
-        elif self.compress_type == ZIP_BZIP2:
-            self.dc = bz2.BZ2Decompressor()
-            self.compreadsize = 900000
-
-        if hasattr(zipinfo, 'CRC'):
-            self._expected_crc = zipinfo.CRC
-            self._running_crc = crc32(b'') & 0xffffffff
-        else:
-            self._expected_crc = None
-
-    def set_univ_newlines(self, univ_newlines):
-        self.univ_newlines = univ_newlines
-
-        # pick line separator char(s) based on universal newlines flag
-        self.nlSeps = (b"\n", )
-        if self.univ_newlines:
-            self.nlSeps = (b"\r\n", b"\r", b"\n")
-
-    def __iter__(self):
-        return self
-
-    def __next__(self):
-        nextline = self.readline()
-        if not nextline:
-            raise StopIteration()
-
-        return nextline
-
-    def close(self):
-        self.closed = True
-
-    def _checkfornewline(self):
-        nl, nllen = -1, -1
-        if self.linebuffer:
-            # ugly check for cases where half of an \r\n pair was
-            # read on the last pass, and the \r was discarded.  In this
-            # case we just throw away the \n at the start of the buffer.
-            if (self.lastdiscard, self.linebuffer[:1]) == (b'\r', b'\n'):
-                self.linebuffer = self.linebuffer[1:]
-
-            for sep in self.nlSeps:
-                nl = self.linebuffer.find(sep)
-                if nl >= 0:
-                    nllen = len(sep)
-                    return nl, nllen
-
-        return nl, nllen
-
-    def readline(self, size = -1):
-        """Read a line with approx. size. If size is negative,
-           read a whole line.
-        """
-        if size < 0:
-            size = sys.maxsize
-        elif size == 0:
-            return b''
-
-        # check for a newline already in buffer
-        nl, nllen = self._checkfornewline()
-
-        if nl >= 0:
-            # the next line was already in the buffer
-            nl = min(nl, size)
-        else:
-            # no line break in buffer - try to read more
-            size -= len(self.linebuffer)
-            while nl < 0 and size > 0:
-                buf = self.read(min(size, 100))
-                if not buf:
-                    break
-                self.linebuffer += buf
-                size -= len(buf)
-
-                # check for a newline in buffer
-                nl, nllen = self._checkfornewline()
-
-            # we either ran out of bytes in the file, or
-            # met the specified size limit without finding a newline,
-            # so return current buffer
-            if nl < 0:
-                s = self.linebuffer
-                self.linebuffer = b''
-                return s
-
-        buf = self.linebuffer[:nl]
-        self.lastdiscard = self.linebuffer[nl:nl + nllen]
-        self.linebuffer = self.linebuffer[nl + nllen:]
-
-        # line is always returned with \n as newline char (except possibly
-        # for a final incomplete line in the file, which is handled above).
-        return buf + b"\n"
-
-    def readlines(self, sizehint = -1):
-        """Return a list with all (following) lines. The sizehint parameter
-        is ignored in this implementation.
-        """
-        result = []
-        while True:
-            line = self.readline()
-            if not line: break
-            result.append(line)
-        return result
-
-    def _update_crc(self, newdata, eof):
-        # 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) & 0xffffffff
-        # Check the CRC if we're at the end of the file
-        if eof and self._running_crc != self._expected_crc:
-            raise BadZipfile("Bad CRC-32 for file %r" % self.name)
-
-    def read(self, size = None):
-        # act like file obj and return empty string if size is 0
-        if size == 0:
-            return b''
-
-        # determine read size
-        bytesToRead = self.compress_size - self.bytes_read
-
-        # adjust read size for encrypted files since the first 12 bytes
-        # are for the encryption/password information
-        if self.decrypter is not None:
-            bytesToRead -= 12
-
-        if size is not None and size >= 0:
-            if self.compress_type == ZIP_STORED:
-                lr = len(self.readbuffer)
-                bytesToRead = min(bytesToRead, size - lr)
-            else:
-                if len(self.readbuffer) > size:
-                    # the user has requested fewer bytes than we've already
-                    # pulled through the decompressor; don't read any more
-                    bytesToRead = 0
-                else:
-                    # user will use up the buffer, so read some more
-                    lr = len(self.rawbuffer)
-                    bytesToRead = min(bytesToRead, self.compreadsize - lr)
-
-        # avoid reading past end of file contents
-        if bytesToRead + self.bytes_read > self.compress_size:
-            bytesToRead = self.compress_size - self.bytes_read
-
-        # try to read from file (if necessary)
-        if bytesToRead > 0:
-            data = self.fileobj.read(bytesToRead)
-            self.bytes_read += len(data)
-            try:
-                self.rawbuffer += data
-            except:
-                print(repr(self.fileobj), repr(self.rawbuffer),
-                      repr(data))
-                raise
-
-            # handle contents of raw buffer
-            if self.rawbuffer:
-                newdata = self.rawbuffer
-                self.rawbuffer = b''
-
-                # decrypt new data if we were given an object to handle that
-                if newdata and self.decrypter is not None:
-                    newdata = bytes(map(self.decrypter, newdata))
-
-                # decompress newly read data if necessary
-                if newdata and self.compress_type != ZIP_STORED:
-                    newdata = self.dc.decompress(newdata)
-                    self.rawbuffer = self.dc.unconsumed_tail if self.compress_type == ZIP_DEFLATED else ''
-                    if self.eof and len(self.rawbuffer) == 0:
-                        # we're out of raw bytes (both from the file and
-                        # the local buffer); flush just to make sure the
-                        # decompressor is done
-                        try:
-                            newdata += self.dc.flush()
-                        except AttributeError:
-                            pass
-                        # prevent decompressor from being used again
-                        self.dc = None
-
-                self._update_crc(newdata, eof=(
-                    self.compress_size == self.bytes_read and
-                    len(self.rawbuffer) == 0))
-                self.readbuffer += newdata
-
-        # return what the user asked for
-        if size is None or len(self.readbuffer) <= size:
-            data = self.readbuffer
-            self.readbuffer = b''
-        else:
-            data = self.readbuffer[:size]
-            self.readbuffer = self.readbuffer[size:]
-
-        return data
-
-
-class ZipFile:
-    """ Class with methods to open, read, write, close, list zip files.
-
-    z = ZipFile(file, mode="r", compression=ZIP_STORED, allowZip64=False)
-
-    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" or append "a".
-    compression: ZIP_STORED (no compression), ZIP_DEFLATED (requires zlib),
-                 or ZIP_BZIP2 (requires bz2).
-    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
-
-    def __init__(self, file, mode="r", compression=ZIP_STORED, allowZip64=False):
-        """Open the ZIP file with mode read "r", write "w" or append "a"."""
-        if mode not in ("r", "w", "a"):
-            raise RuntimeError('ZipFile() requires mode "r", "w", or "a"')
-
-        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")
-        else:
-            raise RuntimeError("That compression method is not supported")
-
-        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 = key = mode.replace('b', '')[0]
-        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': 'wb', 'a' : 'r+b'}
-            try:
-                self.fp = io.open(file, modeDict[mode])
-            except IOError:
-                if mode == 'a':
-                    mode = key = 'w'
-                    self.fp = io.open(file, modeDict[mode])
-                else:
-                    raise
-        else:
-            self._filePassed = 1
-            self.fp = file
-            self.filename = getattr(file, 'name', None)
-
-        if key == 'r':
-            self._GetContents()
-        elif key == 'w':
-            pass
-        elif key == 'a':
-            try:                        # See if file is a zip file
-                self._RealGetContents()
-                # seek to start of directory and overwrite
-                self.fp.seek(self.start_dir, 0)
-            except BadZipfile:          # file is not a zip file, just append
-                self.fp.seek(0, 2)
-        else:
-            if not self._filePassed:
-                self.fp.close()
-                self.fp = None
-            raise RuntimeError('Mode must be "r", "w" or "a"')
-
-    def _GetContents(self):
-        """Read the directory, making sure we close the file if the format
-        is bad."""
-        try:
-            self._RealGetContents()
-        except BadZipfile:
-            if not self._filePassed:
-                self.fp.close()
-                self.fp = None
-            raise
-
-    def _RealGetContents(self):
-        """Read in the table of contents for the ZIP file."""
-        fp = self.fp
-        endrec = _EndRecData(fp)
-        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 centdir[0:4] != stringCentralDir:
-                raise BadZipfile("Bad magic number for central directory")
-            centdir = struct.unpack(structCentralDir, centdir)
-            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('cp437')
-            # 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]
-            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."""
-        l = []
-        for data in self.filelist:
-            l.append(data.filename)
-        return l
-
-    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.
-                f = self.open(zinfo.filename, "r")
-                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."""
-        assert isinstance(pwd, bytes)
-        self.pwd = pwd
-
-    def read(self, name, pwd=None):
-        """Return file bytes (as a string) for name."""
-        return self.open(name, "r", pwd).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 not self.fp:
-            raise RuntimeError(
-                  "Attempt to read ZIP archive that was already closed")
-
-        # Only open a new file for instances where we were not
-        # given a file object in the constructor
-        if self._filePassed:
-            zef_file = self.fp
-        else:
-            zef_file = io.open(self.filename, 'rb')
-
-        # 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)
-
-        zef_file.seek(zinfo.header_offset, 0)
-
-        # Skip the file header:
-        fheader = zef_file.read(sizeFileHeader)
-        if fheader[0:4] != stringFileHeader:
-            raise BadZipfile("Bad magic number for file header")
-
-        fheader = struct.unpack(structFileHeader, fheader)
-        fname = zef_file.read(fheader[_FH_FILENAME_LENGTH])
-        if fheader[_FH_EXTRA_FIELD_LENGTH]:
-            zef_file.read(fheader[_FH_EXTRA_FIELD_LENGTH])
-
-        if fname != zinfo.orig_filename.encode("utf-8"):
-            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.
-            bytes = zef_file.read(12)
-            h = list(map(zd, bytes[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)
-
-        # build and return a ZipExtFile
-        if zd is None:
-            zef = ZipExtFile(zef_file, zinfo)
-        else:
-            zef = ZipExtFile(zef_file, zinfo, zd)
-
-        # set universal newlines on ZipExtFile if necessary
-        if "U" in mode:
-            zef.set_univ_newlines(True)
-        return zef
-
-    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)
-
-    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.
-        # Strip trailing path separator, unless it represents the root.
-        if (targetpath[-1:] in (os.path.sep, os.path.altsep)
-            and len(os.path.splitdrive(targetpath)[1]) > 1):
-            targetpath = targetpath[:-1]
-
-        # don't include leading "/" from file name if present
-        if member.filename[0] == '/':
-            targetpath = os.path.join(targetpath, member.filename[1:])
-        else:
-            targetpath = os.path.join(targetpath, member.filename)
-
-        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
-
-        source = self.open(member, pwd=pwd)
-        target = open(targetpath, "wb")
-        shutil.copyfileobj(source, target)
-        source.close()
-        target.close()
-
-        return targetpath
-
-    def _writecheck(self, zinfo):
-        """Check for errors before writing a file to the archive."""
-        if zinfo.filename in self.NameToInfo:
-            if self.debug:      # Warning for duplicate names
-                print("Duplicate name:", zinfo.filename)
-        if self.mode not in ("w", "a"):
-            raise RuntimeError('write() requires mode "w" or "a"')
-        if not self.fp:
-            raise RuntimeError(
-                  "Attempt to write ZIP archive that was already closed")
-        if zinfo.compress_type == ZIP_DEFLATED and not zlib:
-            raise RuntimeError(
-                  "Compression requires the (missing) zlib module")
-        if zinfo.compress_type == ZIP_BZIP2 and not bz2:
-            raise RuntimeError(
-                  "Compression requires the (missing) bz2 module")
-        if zinfo.compress_type not in (ZIP_STORED, ZIP_DEFLATED, ZIP_BZIP2):
-            raise RuntimeError("That compression method is not supported")
-        if zinfo.file_size > ZIP64_LIMIT:
-            if not self._allowZip64:
-                raise LargeZipFile("Filesize would require ZIP64 extensions")
-        if zinfo.header_offset > ZIP64_LIMIT:
-            if not self._allowZip64:
-                raise LargeZipFile(
-                      "Zipfile size 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 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
-        zinfo.header_offset = self.fp.tell()    # Start of header bytes
-
-        self._writecheck(zinfo)
-        self._didModify = True
-
-        if isdir:
-            zinfo.file_size = 0
-            zinfo.compress_size = 0
-            zinfo.CRC = 0
-            self.filelist.append(zinfo)
-            self.NameToInfo[zinfo.filename] = zinfo
-            self.fp.write(zinfo.FileHeader())
-            return
-
-        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
-            zinfo.file_size = file_size = 0
-            self.fp.write(zinfo.FileHeader())
-            if zinfo.compress_type == ZIP_DEFLATED:
-                cmpr = zlib.compressobj(zlib.Z_DEFAULT_COMPRESSION,
-                     zlib.DEFLATED, -15)
-            elif zinfo.compress_type == ZIP_BZIP2:
-                cmpr = bz2.BZ2Compressor()
-            else:
-                cmpr = None
-            while 1:
-                buf = fp.read(1024 * 8)
-                if not buf:
-                    break
-                file_size = file_size + len(buf)
-                CRC = crc32(buf, CRC) & 0xffffffff
-                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
-        # Seek backwards and write CRC and file sizes
-        position = self.fp.tell()       # Preserve current position in file
-        self.fp.seek(zinfo.header_offset + 14, 0)
-        self.fp.write(struct.pack("<LLL", zinfo.CRC, zinfo.compress_size,
-              zinfo.file_size))
-        self.fp.seek(position, 0)
-        self.filelist.append(zinfo)
-        self.NameToInfo[zinfo.filename] = zinfo
-
-    def writestr(self, zinfo_or_arcname, data):
-        """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
-            zinfo.external_attr = 0o600 << 16
-        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
-        zinfo.header_offset = self.fp.tell()    # Start of header data
-        self._writecheck(zinfo)
-        self._didModify = True
-        zinfo.CRC = crc32(data) & 0xffffffff       # CRC-32 checksum
-        if zinfo.compress_type == ZIP_DEFLATED:
-            co = zlib.compressobj(zlib.Z_DEFAULT_COMPRESSION,
-                 zlib.DEFLATED, -15)
-            data = co.compress(data) + co.flush()
-            zinfo.compress_size = len(data)    # Compressed size
-        elif zinfo.compress_type == ZIP_BZIP2:
-            co = bz2.BZ2Compressor()
-            data = co.compress(data) + co.flush()
-            zinfo.compress_size = len(data)    # Compressed size
-        else:
-            zinfo.compress_size = zinfo.file_size
-        zinfo.header_offset = self.fp.tell()    # Start of header data
-        self.fp.write(zinfo.FileHeader())
-        self.fp.write(data)
-        self.fp.flush()
-        if zinfo.flag_bits & 0x08:
-            # Write CRC and file sizes after the file data
-            self.fp.write(struct.pack("<LLL", zinfo.CRC, zinfo.compress_size,
-                  zinfo.file_size))
-        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" and "a" write the ending
-        records."""
-        if self.fp is None:
-            return
-
-        if self.mode in ("w", "a") and self._didModify: # write ending records
-            count = 0
-            pos1 = self.fp.tell()
-            for zinfo in self.filelist:         # write central directory
-                count = count + 1
-                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
-                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
-
-                    extract_version = max(45, zinfo.extract_version)
-                    create_version = max(45, zinfo.create_version)
-                else:
-                    extract_version = zinfo.extract_version
-                    create_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 = count
-            centDirSize = pos2 - pos1
-            centDirOffset = pos1
-            if (centDirCount >= ZIP_FILECOUNT_LIMIT or
-                centDirOffset > ZIP64_LIMIT or
-                centDirSize > ZIP64_LIMIT):
-                # Need to write the ZIP64 end-of-archive records
-                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)
-
-            # check for valid comment length
-            if len(self.comment) >= ZIP_MAX_COMMENT:
-                if self.debug > 0:
-                    msg = 'Archive comment is too long; truncating to %d bytes' \
-                          % ZIP_MAX_COMMENT
-                self.comment = self.comment[:ZIP_MAX_COMMENT]
-
-            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()
-
-        if not self._filePassed:
-            self.fp.close()
-        self.fp = None
-
-
-class PyZipFile(ZipFile):
-    """Class to create ZIP archives with Python library files and packages."""
-
-    def writepy(self, pathname, basename=""):
-        """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.pyo or module.pyc.
-        This method will compile the module.py into module.pyc if
-        necessary.
-        """
-        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)  # Recursive call
-                    elif ext == ".py":
-                        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":
-                        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).
-        """
-        file_py  = pathname + ".py"
-        file_pyc = pathname + ".pyc"
-        file_pyo = pathname + ".pyo"
-        if os.path.isfile(file_pyo) and \
-                            os.stat(file_pyo).st_mtime >= os.stat(file_py).st_mtime:
-            fname = file_pyo    # Use .pyo file
-        elif not os.path.isfile(file_pyc) or \
-             os.stat(file_pyc).st_mtime < os.stat(file_py).st_mtime:
-            import py_compile
-            if self.debug:
-                print("Compiling", file_py)
-            try:
-                py_compile.compile(file_py, file_pyc, None, True)
-            except py_compile.PyCompileError as err:
-                print(err.msg)
-            fname = file_pyc
-        else:
-            fname = file_pyc
-        archivename = os.path.split(fname)[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)
-        zf = ZipFile(args[1], 'r')
-        zf.printdir()
-        zf.close()
-
-    elif args[0] == '-t':
-        if len(args) != 2:
-            print(USAGE)
-            sys.exit(1)
-        zf = ZipFile(args[1], 'r')
-        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)
-
-        zf = ZipFile(args[1], 'r')
-        out = args[2]
-        for path in zf.namelist():
-            if path.startswith('./'):
-                tgt = os.path.join(out, path[2:])
-            else:
-                tgt = os.path.join(out, path)
-
-            tgtdir = os.path.dirname(tgt)
-            if not os.path.exists(tgtdir):
-                os.makedirs(tgtdir)
-            with open(tgt, 'wb') as fp:
-                fp.write(zf.read(path))
-        zf.close()
-
-    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):
-                for nm in os.listdir(path):
-                    addToZip(zf,
-                            os.path.join(path, nm), os.path.join(zippath, nm))
-            # else: ignore
-
-        zf = ZipFile(args[1], 'w', allowZip64=True)
-        for src in args[2:]:
-            addToZip(zf, src, os.path.basename(src))
-
-        zf.close()
-
-if __name__ == "__main__":
-    main()