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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.
#
import olefile
from . import Image, TiffImagePlugin
#
# --------------------------------------------------------------------
def _accept(prefix):
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):
# 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 = []
for path in self.ole.listdir():
if path[1:] and path[0][-4:] == ".ACI" and path[1] == "Image":
self.images.append(path)
# 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 = None
self._n_frames = len(self.images)
self.is_animated = self._n_frames > 1
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):
return self.frame
def close(self):
self.ole.close()
super().close()
def __exit__(self, *args):
self.ole.close()
super().__exit__()
#
# --------------------------------------------------------------------
Image.register_open(MicImageFile.format, MicImageFile, _accept)
Image.register_extension(MicImageFile.format, ".mic")
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