"""Codec for quoted-printable encoding. | |
Like base64 and rot13, this returns Python strings, not Unicode. | |
""" | |
import codecs, quopri | |
try: | |
from cStringIO import StringIO | |
except ImportError: | |
from StringIO import StringIO | |
def quopri_encode(input, errors='strict'): | |
"""Encode the input, returning a tuple (output object, length consumed). | |
errors defines the error handling to apply. It defaults to | |
'strict' handling which is the only currently supported | |
error handling for this codec. | |
""" | |
assert errors == 'strict' | |
# using str() because of cStringIO's Unicode undesired Unicode behavior. | |
f = StringIO(str(input)) | |
g = StringIO() | |
quopri.encode(f, g, 1) | |
output = g.getvalue() | |
return (output, len(input)) | |
def quopri_decode(input, errors='strict'): | |
"""Decode the input, returning a tuple (output object, length consumed). | |
errors defines the error handling to apply. It defaults to | |
'strict' handling which is the only currently supported | |
error handling for this codec. | |
""" | |
assert errors == 'strict' | |
f = StringIO(str(input)) | |
g = StringIO() | |
quopri.decode(f, g) | |
output = g.getvalue() | |
return (output, 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): | |
pass | |
class StreamReader(Codec,codecs.StreamReader): | |
pass | |
# encodings module API | |
def getregentry(): | |
return codecs.CodecInfo( | |
name='quopri', | |
encode=quopri_encode, | |
decode=quopri_decode, | |
incrementalencoder=IncrementalEncoder, | |
incrementaldecoder=IncrementalDecoder, | |
streamwriter=StreamWriter, | |
streamreader=StreamReader, | |
) |