Mercurial > repos > rliterman > csp2
diff CSP2/CSP2_env/env-d9b9114564458d9d-741b3de822f2aaca6c6caa4325c4afce/lib/python3.8/encodings/zlib_codec.py @ 68:5028fdace37b
planemo upload commit 2e9511a184a1ca667c7be0c6321a36dc4e3d116d
author | jpayne |
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date | Tue, 18 Mar 2025 16:23:26 -0400 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/CSP2/CSP2_env/env-d9b9114564458d9d-741b3de822f2aaca6c6caa4325c4afce/lib/python3.8/encodings/zlib_codec.py Tue Mar 18 16:23:26 2025 -0400 @@ -0,0 +1,77 @@ +"""Python 'zlib_codec' Codec - zlib compression encoding. + +This codec de/encodes from bytes to bytes. + +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'): + assert errors == 'strict' + return (zlib.compress(input), len(input)) + +def zlib_decode(input, errors='strict'): + assert errors == 'strict' + return (zlib.decompress(input), 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): + charbuffertype = bytes + +class StreamReader(Codec, codecs.StreamReader): + charbuffertype = bytes + +### encodings module API + +def getregentry(): + return codecs.CodecInfo( + name='zlib', + encode=zlib_encode, + decode=zlib_decode, + incrementalencoder=IncrementalEncoder, + incrementaldecoder=IncrementalDecoder, + streamreader=StreamReader, + streamwriter=StreamWriter, + _is_text_encoding=False, + )