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# coding=utf-8
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from __future__ import absolute_import
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import gzip
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from zlib import Z_FINISH
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__all__ = ["GeezipFile", "open", "Z_FINISH"]
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def open(filename, mode="rb", compresslevel=9):
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"""Shorthand for GzipFile(filename, mode, compresslevel).
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The filename argument is required; mode defaults to 'rb'
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and compresslevel defaults to 9.
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"""
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return GeezipFile(filename, mode, compresslevel)
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class GeezipFile(gzip.GzipFile):
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def close(self):
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fileobj = self.fileobj
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if fileobj is None:
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return
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self.fileobj = None
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try:
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if self.mode == gzip.WRITE:
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fileobj.write(self.compress.flush(Z_FINISH))
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gzip.write32u(fileobj, self.crc)
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# self.size may exceed 2GB, or even 4GB
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gzip.write32u(fileobj, self.size & 0xffffffff)
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fileobj.flush()
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finally:
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myfileobj = self.myfileobj
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if myfileobj:
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self.myfileobj = None
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myfileobj.close()
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