Coverage for /pythoncovmergedfiles/medio/medio/usr/local/lib/python3.8/site-packages/pillow-10.4.0-py3.8-linux-x86_64.egg/PIL/MicImagePlugin.py: 4%

1# 

2# The Python Imaging Library. 

3# $Id$ 

4# 

5# Microsoft Image Composer support for PIL 

6# 

7# Notes: 

8# uses TiffImagePlugin.py to read the actual image streams 

9# 

10# History: 

11# 97-01-20 fl Created 

12# 

13# Copyright (c) Secret Labs AB 1997. 

14# Copyright (c) Fredrik Lundh 1997. 

15# 

16# See the README file for information on usage and redistribution. 

17# 

18from __future__ import annotations 

19 

20import olefile 

21 

22from . import Image, TiffImagePlugin 

23 

24# 

25# -------------------------------------------------------------------- 

26 

27 

28def _accept(prefix: bytes) -> bool: 

29 return prefix[:8] == olefile.MAGIC 

30 

31 

32## 

33# Image plugin for Microsoft's Image Composer file format. 

34 

35 

36class MicImageFile(TiffImagePlugin.TiffImageFile): 

37 format = "MIC" 

38 format_description = "Microsoft Image Composer" 

39 _close_exclusive_fp_after_loading = False 

40 

41 def _open(self) -> None: 

42 # read the OLE directory and see if this is a likely 

43 # to be a Microsoft Image Composer file 

44 

45 try: 

46 self.ole = olefile.OleFileIO(self.fp) 

47 except OSError as e: 

48 msg = "not an MIC file; invalid OLE file" 

49 raise SyntaxError(msg) from e 

50 

51 # find ACI subfiles with Image members (maybe not the 

52 # best way to identify MIC files, but what the... ;-) 

53 

54 self.images = [ 

55 path 

56 for path in self.ole.listdir() 

57 if path[1:] and path[0][-4:] == ".ACI" and path[1] == "Image" 

58 ] 

59 

60 # if we didn't find any images, this is probably not 

61 # an MIC file. 

62 if not self.images: 

63 msg = "not an MIC file; no image entries" 

64 raise SyntaxError(msg) 

65 

66 self.frame = -1 

67 self._n_frames = len(self.images) 

68 self.is_animated = self._n_frames > 1 

69 

70 self.__fp = self.fp 

71 self.seek(0) 

72 

73 def seek(self, frame): 

74 if not self._seek_check(frame): 

75 return 

76 try: 

77 filename = self.images[frame] 

78 except IndexError as e: 

79 msg = "no such frame" 

80 raise EOFError(msg) from e 

81 

82 self.fp = self.ole.openstream(filename) 

83 

84 TiffImagePlugin.TiffImageFile._open(self) 

85 

86 self.frame = frame 

87 

88 def tell(self) -> int: 

89 return self.frame 

90 

91 def close(self) -> None: 

92 self.__fp.close() 

93 self.ole.close() 

94 super().close() 

95 

96 def __exit__(self, *args: object) -> None: 

97 self.__fp.close() 

98 self.ole.close() 

99 super().__exit__() 

100 

101 

102# 

103# -------------------------------------------------------------------- 

104 

105Image.register_open(MicImageFile.format, MicImageFile, _accept) 

106 

107Image.register_extension(MicImageFile.format, ".mic")