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 

     7 Written by Marc-Andre Lemburg (mal@lemburg.com).

     8 

     9 (c) Copyright CNRI, All Rights Reserved. NO WARRANTY.

    10 

    11 """#"

    12 

    13 import codecs

    14 

    15 ### Codec APIs

    16 

    17 class 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 

    24 class 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 

    32 class 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 

    40 class 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 

    49 class 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 

    60 def 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     )