mirror of
https://github.com/python/cpython.git
synced 2024-11-25 09:39:56 +01:00
56 lines
1.5 KiB
Python
56 lines
1.5 KiB
Python
"""Python 'hex_codec' Codec - 2-digit hex content transfer encoding.
|
|
|
|
This codec de/encodes from bytes to bytes.
|
|
|
|
Written by Marc-Andre Lemburg (mal@lemburg.com).
|
|
"""
|
|
|
|
import codecs
|
|
import binascii
|
|
|
|
### Codec APIs
|
|
|
|
def hex_encode(input, errors='strict'):
|
|
assert errors == 'strict'
|
|
return (binascii.b2a_hex(input), len(input))
|
|
|
|
def hex_decode(input, errors='strict'):
|
|
assert errors == 'strict'
|
|
return (binascii.a2b_hex(input), 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 IncrementalEncoder(codecs.IncrementalEncoder):
|
|
def encode(self, input, final=False):
|
|
assert self.errors == 'strict'
|
|
return binascii.b2a_hex(input)
|
|
|
|
class IncrementalDecoder(codecs.IncrementalDecoder):
|
|
def decode(self, input, final=False):
|
|
assert self.errors == 'strict'
|
|
return binascii.a2b_hex(input)
|
|
|
|
class StreamWriter(Codec, codecs.StreamWriter):
|
|
charbuffertype = bytes
|
|
|
|
class StreamReader(Codec, codecs.StreamReader):
|
|
charbuffertype = bytes
|
|
|
|
### encodings module API
|
|
|
|
def getregentry():
|
|
return codecs.CodecInfo(
|
|
name='hex',
|
|
encode=hex_encode,
|
|
decode=hex_decode,
|
|
incrementalencoder=IncrementalEncoder,
|
|
incrementaldecoder=IncrementalDecoder,
|
|
streamwriter=StreamWriter,
|
|
streamreader=StreamReader,
|
|
_is_text_encoding=False,
|
|
)
|