--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/zipfiles/zipfile271.diff	Fri Jun 03 20:22:08 2011 +0100
@@ -0,0 +1,110 @@
+--- /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.
+ """
++# Improved by Chortos-2 in 2010 (added bzip2 support)
+ import struct, os, time, sys, shutil
+ import binascii, cStringIO, stat
+ import io
+@@ -13,8 +14,13 @@
+     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" ]
++           "ZipInfo", "ZipFile", "PyZipFile", "LargeZipFile", "ZIP_BZIP2" ]
+ 
+ class BadZipfile(Exception):
+     pass
+@@ -35,6 +41,7 @@
+ # 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
+@@ -483,6 +490,9 @@
+ 
+         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 = ''
+@@ -641,6 +651,13 @@
+             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]
+@@ -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".
+-    compression: ZIP_STORED (no compression) or ZIP_DEFLATED (requires zlib).
++    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.
+@@ -677,6 +695,10 @@
+             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"
+ 
+@@ -1011,7 +1033,10 @@
+         if zinfo.compress_type == ZIP_DEFLATED and not zlib:
+             raise RuntimeError, \
+                   "Compression requires the (missing) zlib module"
+-        if zinfo.compress_type not in (ZIP_STORED, ZIP_DEFLATED):
++        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:
+@@ -1072,6 +1097,8 @@
+             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:
+@@ -1132,6 +1159,10 @@
+                  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