1 """ Python 'undefined' Codec

     2 

     3     This codec will always raise a ValueError exception when being

     4     used. It is intended for use by the site.py file to switch off

     5     automatic string to Unicode coercion.

     6 

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

     8 

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

    10 

    11 """

    12 import codecs

    13 

    14 ### Codec APIs

    15 

    16 class Codec(codecs.Codec):

    17 

    18     def encode(self,input,errors='strict'):

    19         raise UnicodeError("undefined encoding")

    20 

    21     def decode(self,input,errors='strict'):

    22         raise UnicodeError("undefined encoding")

    23 

    24 class IncrementalEncoder(codecs.IncrementalEncoder):

    25     def encode(self, input, final=False):

    26         raise UnicodeError("undefined encoding")

    27 

    28 class IncrementalDecoder(codecs.IncrementalDecoder):

    29     def decode(self, input, final=False):

    30         raise UnicodeError("undefined encoding")

    31 

    32 class StreamWriter(Codec,codecs.StreamWriter):

    33     pass

    34 

    35 class StreamReader(Codec,codecs.StreamReader):

    36     pass

    37 

    38 ### encodings module API

    39 

    40 def getregentry():

    41     return codecs.CodecInfo(

    42         name='undefined',

    43         encode=Codec().encode,

    44         decode=Codec().decode,

    45         incrementalencoder=IncrementalEncoder,

    46         incrementaldecoder=IncrementalDecoder,

    47         streamwriter=StreamWriter,

    48         streamreader=StreamReader,

    49     )