""" Python 'undefined' Codec

    This codec will always raise a ValueError exception when being

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

    automatic string to Unicode coercion.

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

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

"""

import codecs

### Codec APIs

class Codec(codecs.Codec):

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

        raise UnicodeError("undefined encoding")

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

        raise UnicodeError("undefined encoding")

class IncrementalEncoder(codecs.IncrementalEncoder):

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

        raise UnicodeError("undefined encoding")

class IncrementalDecoder(codecs.IncrementalDecoder):

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

        raise UnicodeError("undefined encoding")

class StreamWriter(Codec,codecs.StreamWriter):

    pass

class StreamReader(Codec,codecs.StreamReader):

    pass

### encodings module API

def getregentry():

    return codecs.CodecInfo(

        name='undefined',

        encode=Codec().encode,

        decode=Codec().decode,

        incrementalencoder=IncrementalEncoder,

        incrementaldecoder=IncrementalDecoder,

        streamwriter=StreamWriter,

        streamreader=StreamReader,

    )