jpayne@69: """Python 'base64_codec' Codec - base64 content transfer encoding.
jpayne@69: 
jpayne@69: This codec de/encodes from bytes to bytes.
jpayne@69: 
jpayne@69: Written by Marc-Andre Lemburg (mal@lemburg.com).
jpayne@69: """
jpayne@69: 
jpayne@69: import codecs
jpayne@69: import base64
jpayne@69: 
jpayne@69: ### Codec APIs
jpayne@69: 
jpayne@69: def base64_encode(input, errors='strict'):
jpayne@69:     assert errors == 'strict'
jpayne@69:     return (base64.encodebytes(input), len(input))
jpayne@69: 
jpayne@69: def base64_decode(input, errors='strict'):
jpayne@69:     assert errors == 'strict'
jpayne@69:     return (base64.decodebytes(input), len(input))
jpayne@69: 
jpayne@69: class Codec(codecs.Codec):
jpayne@69:     def encode(self, input, errors='strict'):
jpayne@69:         return base64_encode(input, errors)
jpayne@69:     def decode(self, input, errors='strict'):
jpayne@69:         return base64_decode(input, errors)
jpayne@69: 
jpayne@69: class IncrementalEncoder(codecs.IncrementalEncoder):
jpayne@69:     def encode(self, input, final=False):
jpayne@69:         assert self.errors == 'strict'
jpayne@69:         return base64.encodebytes(input)
jpayne@69: 
jpayne@69: class IncrementalDecoder(codecs.IncrementalDecoder):
jpayne@69:     def decode(self, input, final=False):
jpayne@69:         assert self.errors == 'strict'
jpayne@69:         return base64.decodebytes(input)
jpayne@69: 
jpayne@69: class StreamWriter(Codec, codecs.StreamWriter):
jpayne@69:     charbuffertype = bytes
jpayne@69: 
jpayne@69: class StreamReader(Codec, codecs.StreamReader):
jpayne@69:     charbuffertype = bytes
jpayne@69: 
jpayne@69: ### encodings module API
jpayne@69: 
jpayne@69: def getregentry():
jpayne@69:     return codecs.CodecInfo(
jpayne@69:         name='base64',
jpayne@69:         encode=base64_encode,
jpayne@69:         decode=base64_decode,
jpayne@69:         incrementalencoder=IncrementalEncoder,
jpayne@69:         incrementaldecoder=IncrementalDecoder,
jpayne@69:         streamwriter=StreamWriter,
jpayne@69:         streamreader=StreamReader,
jpayne@69:         _is_text_encoding=False,
jpayne@69:     )