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# | |
# The Python Imaging Library. | |
# $Id$ | |
# | |
# Microsoft Image Composer support for PIL | |
# | |
# Notes: | |
# uses TiffImagePlugin.py to read the actual image streams | |
# | |
# History: | |
# 97-01-20 fl Created | |
# | |
# Copyright (c) Secret Labs AB 1997. | |
# Copyright (c) Fredrik Lundh 1997. | |
# | |
# See the README file for information on usage and redistribution. | |
# | |
from __future__ import annotations | |
import olefile | |
from . import Image, TiffImagePlugin | |
# | |
# -------------------------------------------------------------------- | |
def _accept(prefix: bytes) -> bool: | |
return prefix[:8] == olefile.MAGIC | |
## | |
# Image plugin for Microsoft's Image Composer file format. | |
class MicImageFile(TiffImagePlugin.TiffImageFile): | |
format = "MIC" | |
format_description = "Microsoft Image Composer" | |
_close_exclusive_fp_after_loading = False | |
def _open(self) -> None: | |
# read the OLE directory and see if this is a likely | |
# to be a Microsoft Image Composer file | |
try: | |
self.ole = olefile.OleFileIO(self.fp) | |
except OSError as e: | |
msg = "not an MIC file; invalid OLE file" | |
raise SyntaxError(msg) from e | |
# find ACI subfiles with Image members (maybe not the | |
# best way to identify MIC files, but what the... ;-) | |
self.images = [ | |
path | |
for path in self.ole.listdir() | |
if path[1:] and path[0][-4:] == ".ACI" and path[1] == "Image" | |
] | |
# if we didn't find any images, this is probably not | |
# an MIC file. | |
if not self.images: | |
msg = "not an MIC file; no image entries" | |
raise SyntaxError(msg) | |
self.frame = -1 | |
self._n_frames = len(self.images) | |
self.is_animated = self._n_frames > 1 | |
self.__fp = self.fp | |
self.seek(0) | |
def seek(self, frame): | |
if not self._seek_check(frame): | |
return | |
try: | |
filename = self.images[frame] | |
except IndexError as e: | |
msg = "no such frame" | |
raise EOFError(msg) from e | |
self.fp = self.ole.openstream(filename) | |
TiffImagePlugin.TiffImageFile._open(self) | |
self.frame = frame | |
def tell(self) -> int: | |
return self.frame | |
def close(self) -> None: | |
self.__fp.close() | |
self.ole.close() | |
super().close() | |
def __exit__(self, *args: object) -> None: | |
self.__fp.close() | |
self.ole.close() | |
super().__exit__() | |
# | |
# -------------------------------------------------------------------- | |
Image.register_open(MicImageFile.format, MicImageFile, _accept) | |
Image.register_extension(MicImageFile.format, ".mic") | |