--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/zipfiles/zipfile313.diff	Fri Jun 03 20:22:08 2011 +0100
@@ -0,0 +1,126 @@
+--- /usr/local/lib/python3.1/zipfile.py	2010-11-29 00:59:28.000000000 +0000
++++ zipfile313.py	2010-11-29 01:22:19.000000000 +0000
+@@ -3,6 +3,7 @@
+ 
+ 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
+ 
+@@ -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
+@@ -477,6 +484,9 @@
+         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
+@@ -604,7 +614,7 @@
+             if self.compress_type == ZIP_STORED:
+                 lr = len(self.readbuffer)
+                 bytesToRead = min(bytesToRead, size - lr)
+-            elif self.compress_type == ZIP_DEFLATED:
++            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
+@@ -639,14 +649,17 @@
+                     newdata = bytes(map(self.decrypter, newdata))
+ 
+                 # decompress newly read data if necessary
+-                if newdata and self.compress_type == ZIP_DEFLATED:
++                if newdata and self.compress_type != ZIP_STORED:
+                     newdata = self.dc.decompress(newdata)
+-                    self.rawbuffer = self.dc.unconsumed_tail
++                    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
+-                        newdata += self.dc.flush()
++                        try:
++                            newdata += self.dc.flush()
++                        except AttributeError:
++                            pass
+                         # prevent decompressor from being used again
+                         self.dc = None
+ 
+@@ -674,7 +687,8 @@
+     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.
+@@ -694,6 +708,10 @@
+             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")
+ 
+@@ -1041,7 +1059,10 @@
+         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:
+             if not self._allowZip64:
+@@ -1102,6 +1123,8 @@
+             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:
+@@ -1162,6 +1185,10 @@
+                  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