symbian-qemu-0.9.1-12/python-win32-2.6.1/lib/encodings/quopri_codec.py
author martin.trojer@nokia.com
Fri, 31 Jul 2009 15:01:17 +0100
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"""Codec for quoted-printable encoding.
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Like base64 and rot13, this returns Python strings, not Unicode.
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"""
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import codecs, quopri
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try:
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    from cStringIO import StringIO
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except ImportError:
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    from StringIO import StringIO
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def quopri_encode(input, errors='strict'):
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    """Encode the input, returning a tuple (output object, length consumed).
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    errors defines the error handling to apply. It defaults to
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    'strict' handling which is the only currently supported
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    error handling for this codec.
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    """
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    assert errors == 'strict'
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    # using str() because of cStringIO's Unicode undesired Unicode behavior.
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    f = StringIO(str(input))
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    g = StringIO()
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    quopri.encode(f, g, 1)
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    output = g.getvalue()
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    return (output, len(input))
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def quopri_decode(input, errors='strict'):
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    """Decode the input, returning a tuple (output object, length consumed).
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    errors defines the error handling to apply. It defaults to
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    'strict' handling which is the only currently supported
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    error handling for this codec.
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    """
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    assert errors == 'strict'
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    f = StringIO(str(input))
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    g = StringIO()
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    quopri.decode(f, g)
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    output = g.getvalue()
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    return (output, 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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    pass
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class StreamReader(Codec,codecs.StreamReader):
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    pass
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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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    )