|  | """ Test Codecs (used by test_charmapcodec) | 
|  |  | 
|  | Written by Marc-Andre Lemburg (mal@lemburg.com). | 
|  |  | 
|  | (c) Copyright 2000 Guido van Rossum. | 
|  |  | 
|  | """#" | 
|  | import codecs | 
|  |  | 
|  | ### Codec APIs | 
|  |  | 
|  | class Codec(codecs.Codec): | 
|  |  | 
|  | def encode(self,input,errors='strict'): | 
|  |  | 
|  | return codecs.charmap_encode(input,errors,encoding_map) | 
|  |  | 
|  | def decode(self,input,errors='strict'): | 
|  |  | 
|  | return codecs.charmap_decode(input,errors,decoding_map) | 
|  |  | 
|  | class StreamWriter(Codec,codecs.StreamWriter): | 
|  | pass | 
|  |  | 
|  | class StreamReader(Codec,codecs.StreamReader): | 
|  | pass | 
|  |  | 
|  | ### encodings module API | 
|  |  | 
|  | def getregentry(): | 
|  |  | 
|  | return (Codec().encode,Codec().decode,StreamReader,StreamWriter) | 
|  |  | 
|  | ### Decoding Map | 
|  |  | 
|  | decoding_map = codecs.make_identity_dict(range(256)) | 
|  | decoding_map.update({ | 
|  | 0x78: "abc", # 1-n decoding mapping | 
|  | b"abc": 0x0078,# 1-n encoding mapping | 
|  | 0x01: None,   # decoding mapping to <undefined> | 
|  | 0x79: "",    # decoding mapping to <remove character> | 
|  | }) | 
|  |  | 
|  | ### Encoding Map | 
|  |  | 
|  | encoding_map = {} | 
|  | for k,v in decoding_map.items(): | 
|  | encoding_map[v] = k |