57 lines
1.5 KiB
Python
57 lines
1.5 KiB
Python
|
"""Codec for quoted-printable encoding.
|
||
|
|
|
||
|
|
This codec de/encodes from bytes to bytes.
|
||
|
|
"""
|
||
|
|
|
||
|
|
import codecs
|
||
|
|
import quopri
|
||
|
|
from io import BytesIO
|
||
|
|
|
||
|
|
def quopri_encode(input, errors='strict'):
|
||
|
|
assert errors == 'strict'
|
||
|
|
f = BytesIO(input)
|
||
|
|
g = BytesIO()
|
||
|
|
quopri.encode(f, g, 1)
|
||
|
|
return (g.getvalue(), len(input))
|
||
|
|
|
||
|
|
def quopri_decode(input, errors='strict'):
|
||
|
|
assert errors == 'strict'
|
||
|
|
f = BytesIO(input)
|
||
|
|
g = BytesIO()
|
||
|
|
quopri.decode(f, g)
|
||
|
|
return (g.getvalue(), len(input))
|
||
|
|
|
||
|
|
class Codec(codecs.Codec):
|
||
|
|
def encode(self, input, errors='strict'):
|
||
|
|
return quopri_encode(input, errors)
|
||
|
|
def decode(self, input, errors='strict'):
|
||
|
|
return quopri_decode(input, errors)
|
||
|
|
|
||
|
|
class IncrementalEncoder(codecs.IncrementalEncoder):
|
||
|
|
def encode(self, input, final=False):
|
||
|
|
return quopri_encode(input, self.errors)[0]
|
||
|
|
|
||
|
|
class IncrementalDecoder(codecs.IncrementalDecoder):
|
||
|
|
def decode(self, input, final=False):
|
||
|
|
return quopri_decode(input, self.errors)[0]
|
||
|
|
|
||
|
|
class StreamWriter(Codec, codecs.StreamWriter):
|
||
|
|
charbuffertype = bytes
|
||
|
|
|
||
|
|
class StreamReader(Codec, codecs.StreamReader):
|
||
|
|
charbuffertype = bytes
|
||
|
|
|
||
|
|
# encodings module API
|
||
|
|
|
||
|
|
def getregentry():
|
||
|
|
return codecs.CodecInfo(
|
||
|
|
name='quopri',
|
||
|
|
encode=quopri_encode,
|
||
|
|
decode=quopri_decode,
|
||
|
|
incrementalencoder=IncrementalEncoder,
|
||
|
|
incrementaldecoder=IncrementalDecoder,
|
||
|
|
streamwriter=StreamWriter,
|
||
|
|
streamreader=StreamReader,
|
||
|
|
_is_text_encoding=False,
|
||
|
|
)
|