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Merged revisions 61820-61823 via svnmerge from

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svn+ssh://pythondev@svn.python.org/python/trunk

........
  r61820 | gregory.p.smith | 2008-03-23 23:14:38 +0100 (Sun, 23 Mar 2008) | 2 lines

  replace calls to get the initial values with the raw constants.
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  r61821 | gregory.p.smith | 2008-03-24 00:43:02 +0100 (Mon, 24 Mar 2008) | 2 lines

  A bugfix for r61813, it would fail if the data size was >=2**32.
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  r61822 | gregory.p.smith | 2008-03-24 00:45:12 +0100 (Mon, 24 Mar 2008) | 2 lines

  prevent a warning from the struct module when data size >= 2**32.
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  r61823 | gregory.p.smith | 2008-03-24 01:08:01 +0100 (Mon, 24 Mar 2008) | 4 lines

  Have the binascii module use zlib's optimized crc32() function when available
  to reduce our code size (1k data table and tiny bit of code).  It falls back
  to its own without zlib.
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This commit is contained in:
Christian Heimes 2008-03-24 02:19:29 +00:00
parent f8bba8e843
commit 1dc5400939
4 changed files with 39 additions and 8 deletions
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5
Lib/gzip.py
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@ -17,7 +17,6 @@ READ, WRITE = 1, 2
def U32(i):
"""Return i as an unsigned integer, assuming it fits in 32 bits.
If it's >= 2GB when viewed as a 32-bit unsigned int, return a long.
"""
if i < 0:
@ -320,7 +319,7 @@ class GzipFile:
if crc32 != self.crc:
raise IOError("CRC check failed %s != %s" % (hex(crc32),
hex(self.crc)))
elif isize != self.size:
elif isize != (self.size & 0xffffffff):
raise IOError("Incorrect length of data produced")
def close(self):
@ -328,7 +327,7 @@ class GzipFile:
self.fileobj.write(self.compress.flush())
write32u(self.fileobj, self.crc)
# self.size may exceed 2GB, or even 4GB
write32u(self.fileobj, self.size)
write32u(self.fileobj, self.size & 0xffffffff)
self.fileobj = None
elif self.mode == READ:
self.fileobj = None