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