56 lines
1.5 KiB
Python
56 lines
1.5 KiB
Python
|
"""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,
|
||
|
|
)
|