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annotate zipfiles/zipfile321.diff @ 211:78be952f6b40

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Changed the help message to say Python 2.6 is required Change back when full Python 2.5 support is implemented.
author Oleg Oshmyan <chortos@inbox.lv>
date Thu, 18 Aug 2011 15:31:17 +0300
parents 8196d2c0d6f8
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 --- /usr/local/lib/python3.2/zipfile.py 2011-07-14 16:08:50.000000000 +0300
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2 +++ zipfile32.py 2011-07-14 18:31:32.000000000 +0300
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3 @@ -22,8 +22,14 @@
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4 zlib = None
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5 crc32 = binascii.crc32
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6
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7 +try:
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8 + import bz2 # We may need its compression method
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9 +except ImportError:
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10 + bz2 = None
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11 +
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12 __all__ = ["BadZipFile", "BadZipfile", "error", "ZIP_STORED", "ZIP_DEFLATED",
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13 - "is_zipfile", "ZipInfo", "ZipFile", "PyZipFile", "LargeZipFile"]
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14 + "is_zipfile", "ZipInfo", "ZipFile", "PyZipFile", "LargeZipFile",
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15 + "ZIP_BZIP2"]
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16
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17 class BadZipFile(Exception):
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18 pass
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19 @@ -45,6 +51,7 @@ class LargeZipFile(Exception):
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20 # constants for Zip file compression methods
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21 ZIP_STORED = 0
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22 ZIP_DEFLATED = 8
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23 +ZIP_BZIP2 = 12
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24 # Other ZIP compression methods not supported
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25
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26 # Below are some formats and associated data for reading/writing headers using
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27 @@ -483,6 +490,9 @@ def __init__(self, fileobj, mode, zi
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28
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29 if self._compress_type == ZIP_DEFLATED:
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30 self._decompressor = zlib.decompressobj(-15)
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31 + elif self._compress_type == ZIP_BZIP2:
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32 + self._decompressor = bz2.BZ2Decompressor()
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33 + self.MIN_READ_SIZE = 900000
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34 self._unconsumed = b''
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35
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36 self._readbuffer = b''
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37 @@ -641,6 +651,20 @@ def read1(self, n):
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38 self._update_crc(data, eof=eof)
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39 self._readbuffer = self._readbuffer[self._offset:] + data
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40 self._offset = 0
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41 + elif (len(self._unconsumed) > 0 and n > len_readbuffer and
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42 + self._compress_type == ZIP_BZIP2):
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43 + try:
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44 + data = self._decompressor.decompress(self._unconsumed)
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45 + except EOFError:
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46 + eof = self._compress_left
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47 + data = b''
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48 + else:
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49 + eof = False
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50 + self._unconsumed = b''
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51 +
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52 + self._update_crc(data, eof=eof)
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53 + self._readbuffer = self._readbuffer[self._offset:] + data
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54 + self._offset = 0
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55
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56 # Read from buffer.
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57 data = self._readbuffer[self._offset: self._offset + n]
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58 @@ -663,7 +687,8 @@ class ZipFile:
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59 file: Either the path to the file, or a file-like object.
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60 If it is a path, the file will be opened and closed by ZipFile.
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61 mode: The mode can be either read "r", write "w" or append "a".
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62 - compression: ZIP_STORED (no compression) or ZIP_DEFLATED (requires zlib).
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63 + compression: ZIP_STORED (no compression), ZIP_DEFLATED (requires zlib)
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64 + or ZIP_BZIP2 (requires bz2).
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65 allowZip64: if True ZipFile will create files with ZIP64 extensions when
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66 needed, otherwise it will raise an exception when this would
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67 be necessary.
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68 @@ -683,6 +708,10 @@ def __init__(self, file, mode="r", c
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69 if not zlib:
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70 raise RuntimeError(
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71 "Compression requires the (missing) zlib module")
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72 + elif compression == ZIP_BZIP2:
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73 + if not bz2:
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74 + raise RuntimeError(
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75 + "Compression requires the (missing) bz2 module")
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76 else:
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77 raise RuntimeError("That compression method is not supported")
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78
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79 @@ -1051,7 +1080,10 @@ def _writecheck(self, zinfo):
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80 if zinfo.compress_type == ZIP_DEFLATED and not zlib:
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81 raise RuntimeError(
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82 "Compression requires the (missing) zlib module")
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83 - if zinfo.compress_type not in (ZIP_STORED, ZIP_DEFLATED):
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84 + if zinfo.compress_type == ZIP_BZIP2 and not bz2:
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85 + raise RuntimeError(
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86 + "Compression requires the (missing) bz2 module")
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87 + if zinfo.compress_type not in (ZIP_STORED, ZIP_DEFLATED, ZIP_BZIP2):
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88 raise RuntimeError("That compression method is not supported")
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89 if zinfo.file_size > ZIP64_LIMIT:
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90 if not self._allowZip64:
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91 @@ -1112,6 +1144,8 @@ def write(self, filename, arcname=No
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92 if zinfo.compress_type == ZIP_DEFLATED:
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93 cmpr = zlib.compressobj(zlib.Z_DEFAULT_COMPRESSION,
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94 zlib.DEFLATED, -15)
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95 + elif zinfo.compress_type == ZIP_BZIP2:
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96 + cmpr = bz2.BZ2Compressor()
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97 else:
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98 cmpr = None
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99 while 1:
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100 @@ -1175,6 +1209,10 @@ def writestr(self, zinfo_or_arcname,
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101 zlib.DEFLATED, -15)
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102 data = co.compress(data) + co.flush()
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103 zinfo.compress_size = len(data) # Compressed size
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104 + elif zinfo.compress_type == ZIP_BZIP2:
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105 + co = bz2.BZ2Compressor()
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106 + data = co.compress(data) + co.flush()
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107 + zinfo.compress_size = len(data) # Compressed size
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108 else:
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109 zinfo.compress_size = zinfo.file_size
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110 zinfo.header_offset = self.fp.tell() # Start of header data