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+""" Python 'base64_codec' Codec - base64 content transfer encoding
+
+ Unlike most of the other codecs which target Unicode, this codec
+ will return Python string objects for both encode and decode.
+
+ Written by Marc-Andre Lemburg (mal@lemburg.com).
+
+"""
+import codecs, base64
+
+### Codec APIs
+
+def base64_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 = base64.encodestring(input)
+ return (output, len(input))
+
+def base64_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 = base64.decodestring(input)
+ return (output, len(input))
+
+class Codec(codecs.Codec):
+
+ encode = base64_encode
+ decode = base64_decode
+
+class StreamWriter(Codec,codecs.StreamWriter):
+ pass
+
+class StreamReader(Codec,codecs.StreamReader):
+ pass
+
+### encodings module API
+
+def getregentry():
+
+ return (base64_encode,base64_decode,StreamReader,StreamWriter)