summaryrefslogtreecommitdiffstats
path: root/Lib/encodings/zlib_codec.py
diff options
context:
space:
mode:
Diffstat (limited to 'Lib/encodings/zlib_codec.py')
-rw-r--r--Lib/encodings/zlib_codec.py102
1 files changed, 0 insertions, 102 deletions
diff --git a/Lib/encodings/zlib_codec.py b/Lib/encodings/zlib_codec.py
deleted file mode 100644
index 3419f9f..0000000
--- a/Lib/encodings/zlib_codec.py
+++ /dev/null
@@ -1,102 +0,0 @@
-""" Python 'zlib_codec' Codec - zlib compression 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 (mal@lemburg.com).
-
-"""
-import codecs
-import zlib # this codec needs the optional zlib module !
-
-### Codec APIs
-
-def zlib_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 = zlib.compress(input)
- return (output, len(input))
-
-def zlib_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 = zlib.decompress(input)
- return (output, len(input))
-
-class Codec(codecs.Codec):
-
- def encode(self, input, errors='strict'):
- return zlib_encode(input, errors)
- def decode(self, input, errors='strict'):
- return zlib_decode(input, errors)
-
-class IncrementalEncoder(codecs.IncrementalEncoder):
- def __init__(self, errors='strict'):
- assert errors == 'strict'
- self.errors = errors
- self.compressobj = zlib.compressobj()
-
- 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 = zlib.compressobj()
-
-class IncrementalDecoder(codecs.IncrementalDecoder):
- def __init__(self, errors='strict'):
- assert errors == 'strict'
- self.errors = errors
- self.decompressobj = zlib.decompressobj()
-
- def decode(self, input, final=False):
- if final:
- c = self.decompressobj.decompress(input)
- return c + self.decompressobj.flush()
- else:
- return self.decompressobj.decompress(input)
-
- def reset(self):
- self.decompressobj = zlib.decompressobj()
-
-class StreamWriter(Codec,codecs.StreamWriter):
- pass
-
-class StreamReader(Codec,codecs.StreamReader):
- pass
-
-### encodings module API
-
-def getregentry():
- return codecs.CodecInfo(
- name='zlib',
- encode=zlib_encode,
- decode=zlib_decode,
- incrementalencoder=IncrementalEncoder,
- incrementaldecoder=IncrementalDecoder,
- streamreader=StreamReader,
- streamwriter=StreamWriter,
- )