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48 lines
1.0 KiB
Python
48 lines
1.0 KiB
Python
12 years ago
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import zlib, sys
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class GzipReader(object):
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source = None
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cobj = None
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done = False
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buff = ""
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def __init__(self, source):
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self.source = source
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self.cobj = zlib.compressobj()
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def read(self, size = -1):
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if self.done == False:
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if size < 0:
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data = self.source.read()
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return self.cobj.compress(data) + self.cobj.flush(zlib.Z_FINISH)
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else:
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# Keep reading and compressing until we have something to return.
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while len(self.buff) < size:
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data = self.source.read(size)
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if data == "":
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# Process the last data left in the compressor buffer.
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self.buff += self.cobj.flush(zlib.Z_FINISH)
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# Mark as done to prevent calling flush(zlib.Z_FINISH) twice.
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self.done = True
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return self.buff
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self.buff += self.cobj.compress(data)
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returndata = self.buff[:size]
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self.buff = self.buff[size:]
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return returndata
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else:
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return ""
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def flush(self):
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pass
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def write(self, data):
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pass
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def close(self):
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self.source.close()
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