| """ 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 |