|
|
"""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, quotetabs=True) |
|
|
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 |
|
|
|
|
|
|
|
|
|
|
|
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, |
|
|
) |
|
|
|
