Added codec for bz2 compression.
diff --git a/Lib/encodings/bz2_codec.py b/Lib/encodings/bz2_codec.py
new file mode 100644
index 0000000..3d1f75e
--- /dev/null
+++ b/Lib/encodings/bz2_codec.py
@@ -0,0 +1,64 @@
+""" Python 'bz2_codec' Codec - bz2 compression encoding
+
+ Unlike most of the other codecs which target Unicode, this codec
+ will return Python string objects for both encode and decode.
+
+ Adapted by Raymond Hettinger from bz2_codec which was written
+ by Marc-Andre Lemburg (mal@lemburg.com).
+
+"""
+import codecs
+import bz2 # this codec needs the optional bz2 module !
+
+### Codec APIs
+
+def bz2_encode(input,errors='strict'):
+
+ """ Encodes the object input and returns a tuple (output
+ object, length consumed).
+
+ errors defines the error handling to apply. It defaults to
+ 'strict' handling which is the only currently supported
+ error handling for this codec.
+
+ """
+ assert errors == 'strict'
+ output = bz2.compress(input)
+ return (output, len(input))
+
+def bz2_decode(input,errors='strict'):
+
+ """ Decodes the object input and returns a tuple (output
+ object, length consumed).
+
+ input must be an object which provides the bf_getreadbuf
+ buffer slot. Python strings, buffer objects and memory
+ mapped files are examples of objects providing this slot.
+
+ errors defines the error handling to apply. It defaults to
+ 'strict' handling which is the only currently supported
+ error handling for this codec.
+
+ """
+ assert errors == 'strict'
+ output = bz2.decompress(input)
+ return (output, len(input))
+
+class Codec(codecs.Codec):
+
+ def encode(self, input, errors='strict'):
+ return bz2_encode(input, errors)
+ def decode(self, input, errors='strict'):
+ return bz2_decode(input, errors)
+
+class StreamWriter(Codec,codecs.StreamWriter):
+ pass
+
+class StreamReader(Codec,codecs.StreamReader):
+ pass
+
+### encodings module API
+
+def getregentry():
+
+ return (bz2_encode,bz2_decode,StreamReader,StreamWriter)