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fix ZipFile.testzip() to work with very large embedded files

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This commit is contained in:
Antoine Pitrou 2008-08-17 13:06:29 +00:00
parent 7f30a684c6
commit c53427087e
1 changed files with 6 additions and 1 deletions
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7
Lib/zipfile.py
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@ -807,9 +807,14 @@ class ZipFile:
def testzip(self): def testzip(self):
"""Read all the files and check the CRC.""" """Read all the files and check the CRC."""
chunk_size = 2 ** 20
for zinfo in self.filelist: for zinfo in self.filelist:
try: try:
self.read(zinfo.filename) # Check CRC-32 # Read by chunks, to avoid an OverflowError or a
# MemoryError with very large embedded files.
f = self.open(zinfo.filename, "r")
while f.read(chunk_size): # Check CRC-32
pass
except BadZipfile: except BadZipfile:
return zinfo.filename return zinfo.filename