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Diffstat (limited to 'Lib/encodings/base64_codec.py')
-rw-r--r-- | Lib/encodings/base64_codec.py | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/Lib/encodings/base64_codec.py b/Lib/encodings/base64_codec.py new file mode 100644 index 0000000..ce21b1a --- /dev/null +++ b/Lib/encodings/base64_codec.py @@ -0,0 +1,60 @@ +""" 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) |