projects / OpenSPARC-T2-SAM / blame
| Commit | Line | Data |
|---|---|---|
| 920dae64 AT |
1 | """ Python 'hex_codec' Codec - 2-digit hex content transfer encoding |
| 2 | ||
| 3 | Unlike most of the other codecs which target Unicode, this codec | |
| 4 | will return Python string objects for both encode and decode. | |
| 5 | ||
| 6 | Written by Marc-Andre Lemburg (mal@lemburg.com). | |
| 7 | ||
| 8 | """ | |
| 9 | import codecs, binascii | |
| 10 | ||
| 11 | ### Codec APIs | |
| 12 | ||
| 13 | def hex_encode(input,errors='strict'): | |
| 14 | ||
| 15 | """ Encodes the object input and returns a tuple (output | |
| 16 | object, length consumed). | |
| 17 | ||
| 18 | errors defines the error handling to apply. It defaults to | |
| 19 | 'strict' handling which is the only currently supported | |
| 20 | error handling for this codec. | |
| 21 | ||
| 22 | """ | |
| 23 | assert errors == 'strict' | |
| 24 | output = binascii.b2a_hex(input) | |
| 25 | return (output, len(input)) | |
| 26 | ||
| 27 | def hex_decode(input,errors='strict'): | |
| 28 | ||
| 29 | """ Decodes the object input and returns a tuple (output | |
| 30 | object, length consumed). | |
| 31 | ||
| 32 | input must be an object which provides the bf_getreadbuf | |
| 33 | buffer slot. Python strings, buffer objects and memory | |
| 34 | mapped files are examples of objects providing this slot. | |
| 35 | ||
| 36 | errors defines the error handling to apply. It defaults to | |
| 37 | 'strict' handling which is the only currently supported | |
| 38 | error handling for this codec. | |
| 39 | ||
| 40 | """ | |
| 41 | assert errors == 'strict' | |
| 42 | output = binascii.a2b_hex(input) | |
| 43 | return (output, len(input)) | |
| 44 | ||
| 45 | class Codec(codecs.Codec): | |
| 46 | ||
| 47 | def encode(self, input,errors='strict'): | |
| 48 | return hex_encode(input,errors) | |
| 49 | def decode(self, input,errors='strict'): | |
| 50 | return hex_decode(input,errors) | |
| 51 | ||
| 52 | class StreamWriter(Codec,codecs.StreamWriter): | |
| 53 | pass | |
| 54 | ||
| 55 | class StreamReader(Codec,codecs.StreamReader): | |
| 56 | pass | |
| 57 | ||
| 58 | ### encodings module API | |
| 59 | ||
| 60 | def getregentry(): | |
| 61 | ||
| 62 | return (hex_encode,hex_decode,StreamReader,StreamWriter) |