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support for the differences between StringIO and BytesIO

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This commit is contained in:
wiredfool 2013-03-14 10:36:15 -07:00
parent 7db24ccac8
commit 1540d46ca9
1 changed files with 17 additions and 8 deletions
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25
PIL/TiffImagePlugin.py
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@ -626,21 +626,25 @@ class TiffImageFile(ImageFile.ImageFile):
except ValueError:
raise IOError("Couldn't set the image")
if hasattr(self.fp, "fileno"):
# we've got a actual file on disk, pass in the fp.
if Image.DEBUG:
print ("have fileno, calling fileno version of the decoder.")
self.fp.seek(0)
n,e = d.decode(b"fpfp") # 4 bytes, otherwise the trace might error out
elif hasattr(self.fp, "getvalue"):
if hasattr(self.fp, "getvalue"):
# 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
# a lot we can do here other than give it the entire file.
# unless we could do something like get the address of the underlying
# string for stringio.
#
# Rearranging for supporting byteio items, since they have a fileno
# that returns an IOError if there's no underlying fp. Easier to deal
# with here by reordering.
if Image.DEBUG:
print ("have getvalue. just sending in a string from getvalue")
n,e = d.decode(self.fp.getvalue())
elif hasattr(self.fp, "fileno"):
# we've got a actual file on disk, pass in the fp.
if Image.DEBUG:
print ("have fileno, calling fileno version of the decoder.")
self.fp.seek(0)
n,e = d.decode(b"fpfp") # 4 bytes, otherwise the trace might error out
else:
# we have something else.
if Image.DEBUG:
@ -759,7 +763,12 @@ class TiffImageFile(ImageFile.ImageFile):
# into a string in python.
# libtiff closes the file descriptor, so pass in a dup.
fp = hasattr(self.fp, "fileno") and os.dup(self.fp.fileno())
try:
fp = hasattr(self.fp, "fileno") and os.dup(self.fp.fileno())
except IOError:
# io.BytesIO have a fileno, but returns an IOError if
# it doesn't use a file descriptor.
fp = False
# Offset in the tile tuple is 0, we go from 0,0 to
# w,h, and we only do this once -- eds