Coverage for /var/srv/projects/api.amasfac.comuna18.com/tmp/venv/lib/python3.9/site-packages/PIL/XbmImagePlugin.py: 33%

1# 

2# The Python Imaging Library. 

3# $Id$ 

4# 

5# XBM File handling 

6# 

7# History: 

8# 1995-09-08 fl Created 

9# 1996-11-01 fl Added save support 

10# 1997-07-07 fl Made header parser more tolerant 

11# 1997-07-22 fl Fixed yet another parser bug 

12# 2001-02-17 fl Use 're' instead of 'regex' (Python 2.1) (0.4) 

13# 2001-05-13 fl Added hotspot handling (based on code from Bernhard Herzog) 

14# 2004-02-24 fl Allow some whitespace before first #define 

15# 

16# Copyright (c) 1997-2004 by Secret Labs AB 

17# Copyright (c) 1996-1997 by Fredrik Lundh 

18# 

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

20# 

21 

22import re 

23 

24from . import Image, ImageFile 

25 

26# XBM header 

27xbm_head = re.compile( 

28 rb"\s*#define[ \t]+.*_width[ \t]+(?P<width>[0-9]+)[\r\n]+" 

29 b"#define[ \t]+.*_height[ \t]+(?P<height>[0-9]+)[\r\n]+" 

30 b"(?P<hotspot>" 

31 b"#define[ \t]+[^_]*_x_hot[ \t]+(?P<xhot>[0-9]+)[\r\n]+" 

32 b"#define[ \t]+[^_]*_y_hot[ \t]+(?P<yhot>[0-9]+)[\r\n]+" 

33 b")?" 

34 rb"[\000-\377]*_bits\[]" 

35) 

36 

37 

38def _accept(prefix): 

39 return prefix.lstrip()[:7] == b"#define" 

40 

41 

42## 

43# Image plugin for X11 bitmaps. 

44 

45 

46class XbmImageFile(ImageFile.ImageFile): 

47 

48 format = "XBM" 

49 format_description = "X11 Bitmap" 

50 

51 def _open(self): 

52 

53 m = xbm_head.match(self.fp.read(512)) 

54 

55 if not m: 

56 raise SyntaxError("not a XBM file") 

57 

58 xsize = int(m.group("width")) 

59 ysize = int(m.group("height")) 

60 

61 if m.group("hotspot"): 

62 self.info["hotspot"] = (int(m.group("xhot")), int(m.group("yhot"))) 

63 

64 self.mode = "1" 

65 self._size = xsize, ysize 

66 

67 self.tile = [("xbm", (0, 0) + self.size, m.end(), None)] 

68 

69 

70def _save(im, fp, filename): 

71 

72 if im.mode != "1": 

73 raise OSError(f"cannot write mode {im.mode} as XBM") 

74 

75 fp.write(f"#define im_width {im.size[0]}\n".encode("ascii")) 

76 fp.write(f"#define im_height {im.size[1]}\n".encode("ascii")) 

77 

78 hotspot = im.encoderinfo.get("hotspot") 

79 if hotspot: 

80 fp.write(f"#define im_x_hot {hotspot[0]}\n".encode("ascii")) 

81 fp.write(f"#define im_y_hot {hotspot[1]}\n".encode("ascii")) 

82 

83 fp.write(b"static char im_bits[] = {\n") 

84 

85 ImageFile._save(im, fp, [("xbm", (0, 0) + im.size, 0, None)]) 

86 

87 fp.write(b"};\n") 

88 

89 

90Image.register_open(XbmImageFile.format, XbmImageFile, _accept) 

91Image.register_save(XbmImageFile.format, _save) 

92 

93Image.register_extension(XbmImageFile.format, ".xbm") 

94 

95Image.register_mime(XbmImageFile.format, "image/xbm")