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- """ Python 'hex_codec' Codec - 2-digit hex content transfer encoding
- Unlike most of the other codecs which target Unicode, this codec
- will return Python string objects for both encode and decode.
- Written by Marc-Andre Lemburg ([email protected]).
- """
- import codecs, binascii
- ### Codec APIs
- def hex_encode(input,errors='strict'):
- """ Encodes the object input and returns a tuple (output
- object, length consumed).
- errors defines the error handling to apply. It defaults to
- 'strict' handling which is the only currently supported
- error handling for this codec.
- """
- assert errors == 'strict'
- output = binascii.b2a_hex(input)
- return (output, len(input))
- def hex_decode(input,errors='strict'):
- """ Decodes the object input and returns a tuple (output
- object, length consumed).
- input must be an object which provides the bf_getreadbuf
- buffer slot. Python strings, buffer objects and memory
- mapped files are examples of objects providing this slot.
- errors defines the error handling to apply. It defaults to
- 'strict' handling which is the only currently supported
- error handling for this codec.
- """
- assert errors == 'strict'
- output = binascii.a2b_hex(input)
- return (output, len(input))
- class Codec(codecs.Codec):
- def encode(self, input,errors='strict'):
- return hex_encode(input,errors)
- def decode(self, input,errors='strict'):
- return hex_decode(input,errors)
- class StreamWriter(Codec,codecs.StreamWriter):
- pass
- class StreamReader(Codec,codecs.StreamReader):
- pass
- ### encodings module API
- def getregentry():
- return (hex_encode,hex_decode,StreamReader,StreamWriter)
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