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"""Python 'base64_codec' Codec - base64 content transfer encoding.

This codec de/encodes from bytes to bytes.

Written by Marc-Andre Lemburg (mal@lemburg.com).

"""

import codecs

import base64

### Codec APIs

def base64_encode(input, errors='strict'):

assert errors == 'strict'

return (base64.encodebytes(input), len(input))

def base64_decode(input, errors='strict'):

assert errors == 'strict'

return (base64.decodebytes(input), len(input))

class Codec(codecs.Codec):

def encode(self, input, errors='strict'):

return base64_encode(input, errors)

def decode(self, input, errors='strict'):

return base64_decode(input, errors)

class IncrementalEncoder(codecs.IncrementalEncoder):

def encode(self, input, final=False):

assert self.errors == 'strict'

return base64.encodebytes(input)

class IncrementalDecoder(codecs.IncrementalDecoder):

def decode(self, input, final=False):

assert self.errors == 'strict'

return base64.decodebytes(input)

class StreamWriter(Codec, codecs.StreamWriter):

charbuffertype = bytes

class StreamReader(Codec, codecs.StreamReader):

charbuffertype = bytes

### encodings module API

def getregentry():

return codecs.CodecInfo(

name='base64',

encode=base64_encode,

decode=base64_decode,

incrementalencoder=IncrementalEncoder,

incrementaldecoder=IncrementalDecoder,

streamwriter=StreamWriter,

streamreader=StreamReader,

_is_text_encoding=False,

)

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