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/Lib/encodings/charmap.py

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Python | 69 lines | 39 code | 16 blank | 14 comment | 0 complexity | 4b97d8f696820ed83d3a1b96c242c824 MD5 | raw file
 1""" Generic Python Character Mapping Codec.
 2
 3    Use this codec directly rather than through the automatic
 4    conversion mechanisms supplied by unicode() and .encode().
 5
 6
 7Written by Marc-Andre Lemburg (mal@lemburg.com).
 8
 9(c) Copyright CNRI, All Rights Reserved. NO WARRANTY.
10
11"""#"
12
13import codecs
14
15### Codec APIs
16
17class Codec(codecs.Codec):
18
19    # Note: Binding these as C functions will result in the class not
20    # converting them to methods. This is intended.
21    encode = codecs.charmap_encode
22    decode = codecs.charmap_decode
23
24class IncrementalEncoder(codecs.IncrementalEncoder):
25    def __init__(self, errors='strict', mapping=None):
26        codecs.IncrementalEncoder.__init__(self, errors)
27        self.mapping = mapping
28
29    def encode(self, input, final=False):
30        return codecs.charmap_encode(input, self.errors, self.mapping)[0]
31
32class IncrementalDecoder(codecs.IncrementalDecoder):
33    def __init__(self, errors='strict', mapping=None):
34        codecs.IncrementalDecoder.__init__(self, errors)
35        self.mapping = mapping
36
37    def decode(self, input, final=False):
38        return codecs.charmap_decode(input, self.errors, self.mapping)[0]
39
40class StreamWriter(Codec,codecs.StreamWriter):
41
42    def __init__(self,stream,errors='strict',mapping=None):
43        codecs.StreamWriter.__init__(self,stream,errors)
44        self.mapping = mapping
45
46    def encode(self,input,errors='strict'):
47        return Codec.encode(input,errors,self.mapping)
48
49class StreamReader(Codec,codecs.StreamReader):
50
51    def __init__(self,stream,errors='strict',mapping=None):
52        codecs.StreamReader.__init__(self,stream,errors)
53        self.mapping = mapping
54
55    def decode(self,input,errors='strict'):
56        return Codec.decode(input,errors,self.mapping)
57
58### encodings module API
59
60def getregentry():
61    return codecs.CodecInfo(
62        name='charmap',
63        encode=Codec.encode,
64        decode=Codec.decode,
65        incrementalencoder=IncrementalEncoder,
66        incrementaldecoder=IncrementalDecoder,
67        streamwriter=StreamWriter,
68        streamreader=StreamReader,
69    )