diff options
Diffstat (limited to 'AppPkg/Applications/Python/Python-2.7.10/Lib/encodings/bz2_codec.py')
-rw-r--r-- | AppPkg/Applications/Python/Python-2.7.10/Lib/encodings/bz2_codec.py | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/AppPkg/Applications/Python/Python-2.7.10/Lib/encodings/bz2_codec.py b/AppPkg/Applications/Python/Python-2.7.10/Lib/encodings/bz2_codec.py new file mode 100644 index 0000000000..04020db7eb --- /dev/null +++ b/AppPkg/Applications/Python/Python-2.7.10/Lib/encodings/bz2_codec.py @@ -0,0 +1,102 @@ +""" 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,
+ )
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