author | andy simpson <andrews@symbian.org> |
Fri, 08 Oct 2010 16:52:59 +0100 | |
changeset 119 | 931f2bbaabf7 |
parent 1 | 2fb8b9db1c86 |
permissions | -rw-r--r-- |
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#!/usr/bin/env python |
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""" Python Character Mapping Codec for ROT13. |
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See http://ucsub.colorado.edu/~kominek/rot13/ for details. |
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Written by Marc-Andre Lemburg (mal@lemburg.com). |
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"""#" |
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import codecs |
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### Codec APIs |
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class Codec(codecs.Codec): |
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def encode(self,input,errors='strict'): |
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return codecs.charmap_encode(input,errors,encoding_map) |
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def decode(self,input,errors='strict'): |
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return codecs.charmap_decode(input,errors,decoding_map) |
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class IncrementalEncoder(codecs.IncrementalEncoder): |
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def encode(self, input, final=False): |
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return codecs.charmap_encode(input,self.errors,encoding_map)[0] |
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class IncrementalDecoder(codecs.IncrementalDecoder): |
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def decode(self, input, final=False): |
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return codecs.charmap_decode(input,self.errors,decoding_map)[0] |
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class StreamWriter(Codec,codecs.StreamWriter): |
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pass |
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class StreamReader(Codec,codecs.StreamReader): |
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pass |
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### encodings module API |
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def getregentry(): |
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return codecs.CodecInfo( |
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name='rot-13', |
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encode=Codec().encode, |
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decode=Codec().decode, |
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incrementalencoder=IncrementalEncoder, |
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incrementaldecoder=IncrementalDecoder, |
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streamwriter=StreamWriter, |
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streamreader=StreamReader, |
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) |
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### Decoding Map |
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decoding_map = codecs.make_identity_dict(range(256)) |
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decoding_map.update({ |
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0x0041: 0x004e, |
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0x0042: 0x004f, |
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0x0043: 0x0050, |
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0x0044: 0x0051, |
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0x0045: 0x0052, |
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0x0046: 0x0053, |
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0x0047: 0x0054, |
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60 |
0x0048: 0x0055, |
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0x0049: 0x0056, |
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0x004a: 0x0057, |
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0x004b: 0x0058, |
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64 |
0x004c: 0x0059, |
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0x004d: 0x005a, |
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0x004e: 0x0041, |
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0x004f: 0x0042, |
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0x0050: 0x0043, |
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0x0051: 0x0044, |
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0x0052: 0x0045, |
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0x0053: 0x0046, |
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0x0054: 0x0047, |
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0x0055: 0x0048, |
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0x0056: 0x0049, |
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0x0057: 0x004a, |
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0x0058: 0x004b, |
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0x0059: 0x004c, |
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0x005a: 0x004d, |
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0x0061: 0x006e, |
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0x0062: 0x006f, |
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0x0063: 0x0070, |
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0x0064: 0x0071, |
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0x0065: 0x0072, |
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0x0066: 0x0073, |
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0x0067: 0x0074, |
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86 |
0x0068: 0x0075, |
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0x0069: 0x0076, |
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0x006a: 0x0077, |
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0x006b: 0x0078, |
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0x006c: 0x0079, |
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0x006d: 0x007a, |
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0x006e: 0x0061, |
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0x006f: 0x0062, |
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0x0070: 0x0063, |
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0x0071: 0x0064, |
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0x0072: 0x0065, |
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0x0073: 0x0066, |
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0x0074: 0x0067, |
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0x0075: 0x0068, |
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0x0076: 0x0069, |
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0x0077: 0x006a, |
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0x0078: 0x006b, |
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0x0079: 0x006c, |
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0x007a: 0x006d, |
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105 |
}) |
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|
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107 |
### Encoding Map |
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108 |
|
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encoding_map = codecs.make_encoding_map(decoding_map) |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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110 |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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111 |
### Filter API |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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112 |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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113 |
def rot13(infile, outfile): |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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outfile.write(infile.read().encode('rot-13')) |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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115 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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116 |
if __name__ == '__main__': |
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117 |
import sys |
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rot13(sys.stdin, sys.stdout) |