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check required EPS header comments at end of file, not always

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This commit is contained in:
Yay295 2024-06-17 01:23:36 -05:00
parent 1c8d270746
commit a2c0a90c44
1 changed files with 7 additions and 2 deletions
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9
src/PIL/EpsImagePlugin.py
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@ -230,6 +230,11 @@ class EpsImageFile(ImageFile.ImageFile):
trailer_reached = False
def check_required_header_comments() -> None:
"""
The EPS spec requires that some headers exist.
This should be checked after all headers have been read,
or at the end of the file if that comes first.
"""
if "PS-Adobe" not in self.info:
msg = 'EPS header missing "%!PS-Adobe" comment'
raise SyntaxError(msg)
@ -270,6 +275,8 @@ class EpsImageFile(ImageFile.ImageFile):
if byte == b"":
# if we didn't read a byte we must be at the end of the file
if bytes_read == 0:
if reading_header_comments:
check_required_header_comments()
break
elif byte in b"\r\n":
# if we read a line ending character, ignore it and parse what
@ -365,8 +372,6 @@ class EpsImageFile(ImageFile.ImageFile):
trailer_reached = True
bytes_read = 0
check_required_header_comments()
if not self._size:
msg = "cannot determine EPS bounding box"
raise OSError(msg)