projects / OpenSPARC-T2-DV / blame
| Commit | Line | Data |
|---|---|---|
| 86530b38 AT |
1 | #!/usr/bin/env python |
| 2 | """ Python Character Mapping Codec for ROT13. | |
| 3 | ||
| 4 | See http://ucsub.colorado.edu/~kominek/rot13/ for details. | |
| 5 | ||
| 6 | Written by Marc-Andre Lemburg (mal@lemburg.com). | |
| 7 | ||
| 8 | """#" | |
| 9 | ||
| 10 | import codecs | |
| 11 | ||
| 12 | ### Codec APIs | |
| 13 | ||
| 14 | class Codec(codecs.Codec): | |
| 15 | ||
| 16 | def encode(self,input,errors='strict'): | |
| 17 | ||
| 18 | return codecs.charmap_encode(input,errors,encoding_map) | |
| 19 | ||
| 20 | def decode(self,input,errors='strict'): | |
| 21 | ||
| 22 | return codecs.charmap_decode(input,errors,decoding_map) | |
| 23 | ||
| 24 | class StreamWriter(Codec,codecs.StreamWriter): | |
| 25 | pass | |
| 26 | ||
| 27 | class StreamReader(Codec,codecs.StreamReader): | |
| 28 | pass | |
| 29 | ||
| 30 | ### encodings module API | |
| 31 | ||
| 32 | def getregentry(): | |
| 33 | ||
| 34 | return (Codec().encode,Codec().decode,StreamReader,StreamWriter) | |
| 35 | ||
| 36 | ### Decoding Map | |
| 37 | ||
| 38 | decoding_map = codecs.make_identity_dict(range(256)) | |
| 39 | decoding_map.update({ | |
| 40 | 0x0041: 0x004e, | |
| 41 | 0x0042: 0x004f, | |
| 42 | 0x0043: 0x0050, | |
| 43 | 0x0044: 0x0051, | |
| 44 | 0x0045: 0x0052, | |
| 45 | 0x0046: 0x0053, | |
| 46 | 0x0047: 0x0054, | |
| 47 | 0x0048: 0x0055, | |
| 48 | 0x0049: 0x0056, | |
| 49 | 0x004a: 0x0057, | |
| 50 | 0x004b: 0x0058, | |
| 51 | 0x004c: 0x0059, | |
| 52 | 0x004d: 0x005a, | |
| 53 | 0x004e: 0x0041, | |
| 54 | 0x004f: 0x0042, | |
| 55 | 0x0050: 0x0043, | |
| 56 | 0x0051: 0x0044, | |
| 57 | 0x0052: 0x0045, | |
| 58 | 0x0053: 0x0046, | |
| 59 | 0x0054: 0x0047, | |
| 60 | 0x0055: 0x0048, | |
| 61 | 0x0056: 0x0049, | |
| 62 | 0x0057: 0x004a, | |
| 63 | 0x0058: 0x004b, | |
| 64 | 0x0059: 0x004c, | |
| 65 | 0x005a: 0x004d, | |
| 66 | 0x0061: 0x006e, | |
| 67 | 0x0062: 0x006f, | |
| 68 | 0x0063: 0x0070, | |
| 69 | 0x0064: 0x0071, | |
| 70 | 0x0065: 0x0072, | |
| 71 | 0x0066: 0x0073, | |
| 72 | 0x0067: 0x0074, | |
| 73 | 0x0068: 0x0075, | |
| 74 | 0x0069: 0x0076, | |
| 75 | 0x006a: 0x0077, | |
| 76 | 0x006b: 0x0078, | |
| 77 | 0x006c: 0x0079, | |
| 78 | 0x006d: 0x007a, | |
| 79 | 0x006e: 0x0061, | |
| 80 | 0x006f: 0x0062, | |
| 81 | 0x0070: 0x0063, | |
| 82 | 0x0071: 0x0064, | |
| 83 | 0x0072: 0x0065, | |
| 84 | 0x0073: 0x0066, | |
| 85 | 0x0074: 0x0067, | |
| 86 | 0x0075: 0x0068, | |
| 87 | 0x0076: 0x0069, | |
| 88 | 0x0077: 0x006a, | |
| 89 | 0x0078: 0x006b, | |
| 90 | 0x0079: 0x006c, | |
| 91 | 0x007a: 0x006d, | |
| 92 | }) | |
| 93 | ||
| 94 | ### Encoding Map | |
| 95 | ||
| 96 | encoding_map = codecs.make_encoding_map(decoding_map) | |
| 97 | ||
| 98 | ### Filter API | |
| 99 | ||
| 100 | def rot13(infile, outfile): | |
| 101 | outfile.write(infile.read().encode('rot-13')) | |
| 102 | ||
| 103 | if __name__ == '__main__': | |
| 104 | import sys | |
| 105 | rot13(sys.stdin, sys.stdout) |