AppPkg/Applications/Python/Python-2.7.10: Initial Checkin part 4/5.

[mirror_edk2.git] / AppPkg / Applications / Python / Python-2.7.10 / Lib / encodings / bz2_codec.py

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
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+""" Python 'bz2_codec' Codec - bz2 compression encoding\r
+\r
+    Unlike most of the other codecs which target Unicode, this codec\r
+    will return Python string objects for both encode and decode.\r
+\r
+    Adapted by Raymond Hettinger from zlib_codec.py which was written\r
+    by Marc-Andre Lemburg (mal@lemburg.com).\r
+\r
+"""\r
+import codecs\r
+import bz2 # this codec needs the optional bz2 module !\r
+\r
+### Codec APIs\r
+\r
+def bz2_encode(input,errors='strict'):\r
+\r
+    """ Encodes the object input and returns a tuple (output\r
+        object, length consumed).\r
+\r
+        errors defines the error handling to apply. It defaults to\r
+        'strict' handling which is the only currently supported\r
+        error handling for this codec.\r
+\r
+    """\r
+    assert errors == 'strict'\r
+    output = bz2.compress(input)\r
+    return (output, len(input))\r
+\r
+def bz2_decode(input,errors='strict'):\r
+\r
+    """ Decodes the object input and returns a tuple (output\r
+        object, length consumed).\r
+\r
+        input must be an object which provides the bf_getreadbuf\r
+        buffer slot. Python strings, buffer objects and memory\r
+        mapped files are examples of objects providing this slot.\r
+\r
+        errors defines the error handling to apply. It defaults to\r
+        'strict' handling which is the only currently supported\r
+        error handling for this codec.\r
+\r
+    """\r
+    assert errors == 'strict'\r
+    output = bz2.decompress(input)\r
+    return (output, len(input))\r
+\r
+class Codec(codecs.Codec):\r
+\r
+    def encode(self, input, errors='strict'):\r
+        return bz2_encode(input, errors)\r
+    def decode(self, input, errors='strict'):\r
+        return bz2_decode(input, errors)\r
+\r
+class IncrementalEncoder(codecs.IncrementalEncoder):\r
+    def __init__(self, errors='strict'):\r
+        assert errors == 'strict'\r
+        self.errors = errors\r
+        self.compressobj = bz2.BZ2Compressor()\r
+\r
+    def encode(self, input, final=False):\r
+        if final:\r
+            c = self.compressobj.compress(input)\r
+            return c + self.compressobj.flush()\r
+        else:\r
+            return self.compressobj.compress(input)\r
+\r
+    def reset(self):\r
+        self.compressobj = bz2.BZ2Compressor()\r
+\r
+class IncrementalDecoder(codecs.IncrementalDecoder):\r
+    def __init__(self, errors='strict'):\r
+        assert errors == 'strict'\r
+        self.errors = errors\r
+        self.decompressobj = bz2.BZ2Decompressor()\r
+\r
+    def decode(self, input, final=False):\r
+        try:\r
+            return self.decompressobj.decompress(input)\r
+        except EOFError:\r
+            return ''\r
+\r
+    def reset(self):\r
+        self.decompressobj = bz2.BZ2Decompressor()\r
+\r
+class StreamWriter(Codec,codecs.StreamWriter):\r
+    pass\r
+\r
+class StreamReader(Codec,codecs.StreamReader):\r
+    pass\r
+\r
+### encodings module API\r
+\r
+def getregentry():\r
+    return codecs.CodecInfo(\r
+        name="bz2",\r
+        encode=bz2_encode,\r
+        decode=bz2_decode,\r
+        incrementalencoder=IncrementalEncoder,\r
+        incrementaldecoder=IncrementalDecoder,\r
+        streamwriter=StreamWriter,\r
+        streamreader=StreamReader,\r
+    )\r