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bpo-34035: Fix several AttributeError in zipfile seek() methods. (GH-8527)

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Mickaël Schoentgen 2018-07-29 20:26:52 +02:00 • committed by Serhiy Storchaka
parent d2e902e4fb
commit 3f8c6913b8
4 changed files with 9 additions and 4 deletions
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7
Lib/zipfile.py
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@ -701,11 +701,11 @@ class _SharedFile:
def seek(self, offset, whence=0):
with self._lock:
if self.writing():
if self._writing():
raise ValueError("Can't reposition in the ZIP file while "
"there is an open writing handle on it. "
"Close the writing handle before trying to read.")
self._file.seek(self._pos)
self._file.seek(offset, whence)
self._pos = self._file.tell()
return self._pos
@ -1021,14 +1021,13 @@ class ZipExtFile(io.BufferedIOBase):
read_offset = 0
elif read_offset < 0:
# Position is before the current position. Reset the ZipExtFile
self._fileobj.seek(self._orig_compress_start)
self._running_crc = self._orig_start_crc
self._compress_left = self._orig_compress_size
self._left = self._orig_file_size
self._readbuffer = b''
self._offset = 0
self._decompressor = zipfile._get_decompressor(self._compress_type)
self._decompressor = _get_decompressor(self._compress_type)
self._eof = False
read_offset = new_pos