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Do not seek if the file pointer is about to be closed

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This commit is contained in:
Andrew Murray 2019-08-03 21:43:01 +10:00
parent b7ad0d8852
commit f9236a11ce
1 changed files with 4 additions and 2 deletions
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6
src/PIL/TiffImagePlugin.py
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@ -1165,6 +1165,7 @@ class TiffImageFile(ImageFile.ImageFile):
except ValueError: except ValueError:
raise IOError("Couldn't set the image") raise IOError("Couldn't set the image")
close_self_fp = self._exclusive_fp and not self._is_animated
if hasattr(self.fp, "getvalue"): if hasattr(self.fp, "getvalue"):
# We've got a stringio like thing passed in. Yay for all in memory. # We've got a stringio like thing passed in. Yay for all in memory.
# The decoder needs the entire file in one shot, so there's not # The decoder needs the entire file in one shot, so there's not
@ -1182,7 +1183,8 @@ class TiffImageFile(ImageFile.ImageFile):
# we've got a actual file on disk, pass in the fp. # we've got a actual file on disk, pass in the fp.
if DEBUG: if DEBUG:
print("have fileno, calling fileno version of the decoder.") print("have fileno, calling fileno version of the decoder.")
self.fp.seek(0) if not close_self_fp:
self.fp.seek(0)
# 4 bytes, otherwise the trace might error out # 4 bytes, otherwise the trace might error out
n, err = decoder.decode(b"fpfp") n, err = decoder.decode(b"fpfp")
else: else:
@ -1199,7 +1201,7 @@ class TiffImageFile(ImageFile.ImageFile):
self.load_end() self.load_end()
# libtiff closed the fp in a, we need to close self.fp, if possible # libtiff closed the fp in a, we need to close self.fp, if possible
if self._exclusive_fp and not self._is_animated: if close_self_fp:
self.fp.close() self.fp.close()
self.fp = None # might be shared self.fp = None # might be shared