#3317 in zipfile module, restore the previous names of global variables:
some applications relied on them. Also remove duplicated lines.
This commit is contained in:
Amaury Forgeot d'Arc
parent
8dbbb96929
commit
ae6d2b9175
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@ -43,9 +43,9 @@ ZIP_DEFLATED = 8
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# The "end of central directory" structure, magic number, size, and indices
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# (section V.I in the format document)
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structEndCentDir = "<4s4H2LH"
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magicEndCentDir = "PK\005\006"
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sizeEndCentDir = struct.calcsize(structEndCentDir)
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structEndArchive = "<4s4H2LH"
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stringEndArchive = "PK\005\006"
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sizeEndCentDir = struct.calcsize(structEndArchive)
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_ECD_SIGNATURE = 0
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_ECD_DISK_NUMBER = 1
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@ -63,37 +63,9 @@ _ECD_LOCATION = 9
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# The "central directory" structure, magic number, size, and indices
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# of entries in the structure (section V.F in the format document)
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structCentralDir = "<4s4B4HL2L5H2L"
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magicCentralDir = "PK\001\002"
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stringCentralDir = "PK\001\002"
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sizeCentralDir = struct.calcsize(structCentralDir)
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# The "local file header" structure, magic number, size, and indices
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# (section V.A in the format document)
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structFileHeader = "<4s2B4HL2L2H"
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magicFileHeader = "PK\003\004"
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sizeFileHeader = struct.calcsize(structFileHeader)
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# The "Zip64 end of central directory locator" structure, magic number, and size
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structEndCentDir64Locator = "<4sLQL"
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magicEndCentDir64Locator = "PK\x06\x07"
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sizeEndCentDir64Locator = struct.calcsize(structEndCentDir64Locator)
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# The "Zip64 end of central directory" record, magic number, size, and indices
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# (section V.G in the format document)
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structEndCentDir64 = "<4sQ2H2L4Q"
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magicEndCentDir64 = "PK\x06\x06"
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sizeEndCentDir64 = struct.calcsize(structEndCentDir64)
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_CD64_SIGNATURE = 0
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_CD64_DIRECTORY_RECSIZE = 1
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_CD64_CREATE_VERSION = 2
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_CD64_EXTRACT_VERSION = 3
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_CD64_DISK_NUMBER = 4
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_CD64_DISK_NUMBER_START = 5
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_CD64_NUMBER_ENTRIES_THIS_DISK = 6
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_CD64_NUMBER_ENTRIES_TOTAL = 7
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_CD64_DIRECTORY_SIZE = 8
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_CD64_OFFSET_START_CENTDIR = 9
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# indexes of entries in the central directory structure
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_CD_SIGNATURE = 0
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_CD_CREATE_VERSION = 1
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@ -118,7 +90,7 @@ _CD_LOCAL_HEADER_OFFSET = 18
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# The "local file header" structure, magic number, size, and indices
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# (section V.A in the format document)
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structFileHeader = "<4s2B4HL2L2H"
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magicFileHeader = "PK\003\004"
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stringFileHeader = "PK\003\004"
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sizeFileHeader = struct.calcsize(structFileHeader)
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_FH_SIGNATURE = 0
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@ -135,15 +107,15 @@ _FH_FILENAME_LENGTH = 10
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_FH_EXTRA_FIELD_LENGTH = 11
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# The "Zip64 end of central directory locator" structure, magic number, and size
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structEndCentDir64Locator = "<4sLQL"
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magicEndCentDir64Locator = "PK\x06\x07"
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sizeEndCentDir64Locator = struct.calcsize(structEndCentDir64Locator)
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structEndArchive64Locator = "<4sLQL"
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stringEndArchive64Locator = "PK\x06\x07"
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sizeEndCentDir64Locator = struct.calcsize(structEndArchive64Locator)
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# The "Zip64 end of central directory" record, magic number, size, and indices
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# (section V.G in the format document)
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structEndCentDir64 = "<4sQ2H2L4Q"
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magicEndCentDir64 = "PK\x06\x06"
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sizeEndCentDir64 = struct.calcsize(structEndCentDir64)
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structEndArchive64 = "<4sQ2H2L4Q"
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stringEndArchive64 = "PK\x06\x06"
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sizeEndCentDir64 = struct.calcsize(structEndArchive64)
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_CD64_SIGNATURE = 0
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_CD64_DIRECTORY_RECSIZE = 1
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@ -174,8 +146,8 @@ def _EndRecData64(fpin, offset, endrec):
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"""
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fpin.seek(offset - sizeEndCentDir64Locator, 2)
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data = fpin.read(sizeEndCentDir64Locator)
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sig, diskno, reloff, disks = struct.unpack(structEndCentDir64Locator, data)
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if sig != magicEndCentDir64Locator:
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sig, diskno, reloff, disks = struct.unpack(structEndArchive64Locator, data)
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if sig != stringEndArchive64Locator:
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return endrec
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if diskno != 0 or disks != 1:
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@ -186,8 +158,8 @@ def _EndRecData64(fpin, offset, endrec):
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data = fpin.read(sizeEndCentDir64)
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sig, sz, create_version, read_version, disk_num, disk_dir, \
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dircount, dircount2, dirsize, diroffset = \
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struct.unpack(structEndCentDir64, data)
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if sig != magicEndCentDir64:
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struct.unpack(structEndArchive64, data)
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if sig != stringEndArchive64:
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return endrec
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# Update the original endrec using data from the ZIP64 record
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@ -215,9 +187,9 @@ def _EndRecData(fpin):
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# file if this is the case).
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fpin.seek(-sizeEndCentDir, 2)
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data = fpin.read()
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if data[0:4] == magicEndCentDir and data[-2:] == "\000\000":
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if data[0:4] == stringEndArchive and data[-2:] == "\000\000":
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# the signature is correct and there's no comment, unpack structure
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endrec = struct.unpack(structEndCentDir, data)
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endrec = struct.unpack(structEndArchive, data)
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endrec=list(endrec)
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# Append a blank comment and record start offset
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@ -239,11 +211,11 @@ def _EndRecData(fpin):
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maxCommentStart = max(filesize - (1 << 16) - sizeEndCentDir, 0)
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fpin.seek(maxCommentStart, 0)
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data = fpin.read()
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start = data.rfind(magicEndCentDir)
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start = data.rfind(stringEndArchive)
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if start >= 0:
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# found the magic number; attempt to unpack and interpret
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recData = data[start:start+sizeEndCentDir]
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endrec = list(struct.unpack(structEndCentDir, recData))
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endrec = list(struct.unpack(structEndArchive, recData))
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comment = data[start+sizeEndCentDir:]
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# check that comment length is correct
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if endrec[_ECD_COMMENT_SIZE] == len(comment):
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@ -350,7 +322,7 @@ class ZipInfo (object):
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self.create_version = max(45, self.extract_version)
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filename, flag_bits = self._encodeFilenameFlags()
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header = struct.pack(structFileHeader, magicFileHeader,
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header = struct.pack(structFileHeader, stringFileHeader,
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self.extract_version, self.reserved, flag_bits,
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self.compress_type, dostime, dosdate, CRC,
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compress_size, file_size,
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@ -779,7 +751,7 @@ class ZipFile:
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total = 0
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while total < size_cd:
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centdir = fp.read(sizeCentralDir)
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if centdir[0:4] != magicCentralDir:
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if centdir[0:4] != stringCentralDir:
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raise BadZipfile, "Bad magic number for central directory"
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centdir = struct.unpack(structCentralDir, centdir)
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if self.debug > 2:
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@ -885,7 +857,7 @@ class ZipFile:
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# Skip the file header:
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fheader = zef_file.read(sizeFileHeader)
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if fheader[0:4] != magicFileHeader:
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if fheader[0:4] != stringFileHeader:
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raise BadZipfile, "Bad magic number for file header"
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fheader = struct.unpack(structFileHeader, fheader)
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@ -1173,7 +1145,7 @@ class ZipFile:
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try:
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filename, flag_bits = zinfo._encodeFilenameFlags()
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centdir = struct.pack(structCentralDir,
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magicCentralDir, create_version,
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stringCentralDir, create_version,
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zinfo.create_system, extract_version, zinfo.reserved,
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flag_bits, zinfo.compress_type, dostime, dosdate,
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zinfo.CRC, compress_size, file_size,
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@ -1201,13 +1173,13 @@ class ZipFile:
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if pos1 > ZIP64_LIMIT:
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# Need to write the ZIP64 end-of-archive records
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zip64endrec = struct.pack(
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structEndCentDir64, magicEndCentDir64,
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structEndArchive64, stringEndArchive64,
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44, 45, 45, 0, 0, count, count, pos2 - pos1, pos1)
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self.fp.write(zip64endrec)
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zip64locrec = struct.pack(
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structEndCentDir64Locator,
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magicEndCentDir64Locator, 0, pos2, 1)
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structEndArchive64Locator,
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stringEndArchive64Locator, 0, pos2, 1)
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self.fp.write(zip64locrec)
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centDirOffset = 0xFFFFFFFF
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@ -1218,7 +1190,7 @@ class ZipFile:
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% ZIP_MAX_COMMENT
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self.comment = self.comment[:ZIP_MAX_COMMENT]
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endrec = struct.pack(structEndCentDir, magicEndCentDir,
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endrec = struct.pack(structEndArchive, stringEndArchive,
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0, 0, count % ZIP_FILECOUNT_LIMIT,
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count % ZIP_FILECOUNT_LIMIT, pos2 - pos1,
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centDirOffset, len(self.comment))
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