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The bz2 codec isn't supported any more. I've also commented out several codecs which were removed in the past.

This commit is contained in:
Christian Heimes 2007-12-02 15:27:38 +00:00
parent d8654cf758
commit b9819954aa
2 changed files with 18 additions and 120 deletions
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36
Lib/encodings/aliases.py
View File

@ -33,9 +33,9 @@ aliases = {
'us' : 'ascii',
'us_ascii' : 'ascii',
# base64_codec codec
'base64' : 'base64_codec',
'base_64' : 'base64_codec',
## base64_codec codec
#'base64' : 'base64_codec',
#'base_64' : 'base64_codec',
# big5 codec
'big5_tw' : 'big5',
@ -45,8 +45,8 @@ aliases = {
'big5_hkscs' : 'big5hkscs',
'hkscs' : 'big5hkscs',
# bz2_codec codec
'bz2' : 'bz2_codec',
## bz2_codec codec
#'bz2' : 'bz2_codec',
# cp037 codec
'037' : 'cp037',
@ -243,8 +243,8 @@ aliases = {
'cp936' : 'gbk',
'ms936' : 'gbk',
# hex_codec codec
'hex' : 'hex_codec',
## hex_codec codec
#'hex' : 'hex_codec',
# hp_roman8 codec
'roman8' : 'hp_roman8',
@ -444,13 +444,13 @@ aliases = {
'cp154' : 'ptcp154',
'cyrillic-asian' : 'ptcp154',
# quopri_codec codec
'quopri' : 'quopri_codec',
'quoted_printable' : 'quopri_codec',
'quotedprintable' : 'quopri_codec',
## quopri_codec codec
#'quopri' : 'quopri_codec',
#'quoted_printable' : 'quopri_codec',
#'quotedprintable' : 'quopri_codec',
# rot_13 codec
'rot13' : 'rot_13',
## rot_13 codec
#'rot13' : 'rot_13',
# shift_jis codec
'csshiftjis' : 'shift_jis',
@ -512,11 +512,11 @@ aliases = {
'utf8_ucs2' : 'utf_8',
'utf8_ucs4' : 'utf_8',
# uu_codec codec
'uu' : 'uu_codec',
## uu_codec codec
#'uu' : 'uu_codec',
# zlib_codec codec
'zip' : 'zlib_codec',
'zlib' : 'zlib_codec',
## zlib_codec codec
#'zip' : 'zlib_codec',
#'zlib' : 'zlib_codec',
}

102
Lib/encodings/bz2_codec.py
View File

@ -1,102 +0,0 @@
""" Python 'bz2_codec' Codec - bz2 compression encoding
Unlike most of the other codecs which target Unicode, this codec
will return Python string objects for both encode and decode.
Adapted by Raymond Hettinger from zlib_codec.py which was written
by Marc-Andre Lemburg (mal@lemburg.com).
"""
import codecs
import bz2 # this codec needs the optional bz2 module !
### Codec APIs
def bz2_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 = bz2.compress(input)
return (output, len(input))
def bz2_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 = bz2.decompress(input)
return (output, len(input))
class Codec(codecs.Codec):
def encode(self, input, errors='strict'):
return bz2_encode(input, errors)
def decode(self, input, errors='strict'):
return bz2_decode(input, errors)
class IncrementalEncoder(codecs.IncrementalEncoder):
def __init__(self, errors='strict'):
assert errors == 'strict'
self.errors = errors
self.compressobj = bz2.BZ2Compressor()
def encode(self, input, final=False):
if final:
c = self.compressobj.compress(input)
return c + self.compressobj.flush()
else:
return self.compressobj.compress(input)
def reset(self):
self.compressobj = bz2.BZ2Compressor()
class IncrementalDecoder(codecs.IncrementalDecoder):
def __init__(self, errors='strict'):
assert errors == 'strict'
self.errors = errors
self.decompressobj = bz2.BZ2Decompressor()
def decode(self, input, final=False):
try:
return self.decompressobj.decompress(input)
except EOFError:
return ''
def reset(self):
self.decompressobj = bz2.BZ2Decompressor()
class StreamWriter(Codec,codecs.StreamWriter):
pass
class StreamReader(Codec,codecs.StreamReader):
pass
### encodings module API
def getregentry():
return codecs.CodecInfo(
name="bz2",
encode=bz2_encode,
decode=bz2_decode,
incrementalencoder=IncrementalEncoder,
incrementaldecoder=IncrementalDecoder,
streamwriter=StreamWriter,
streamreader=StreamReader,
)