2 # This file is part of LyX, the document processor.
3 # Licence details can be found in the file COPYING.
5 # \author Angus Leeming
8 # Full author contact details are available in file CREDITS
11 # fig_copy.py <from file> <to file>
13 # This script will copy an XFIG .fig file "$1" to "$2". In the process,
14 # it will modify the contents of the .fig file so that the names of any
15 # picture files that are stored as relative paths are replaced
16 # with the absolute path.
20 if len(sys.argv) != 3:
21 print ("Usage: fig_copy.py <from file> <to file>", file=sys.stderr)
24 if not os.path.isfile(sys.argv[1]):
25 print ("Unable to read", sys.argv[1], file=sys.stderr)
28 from_dir = os.path.split(os.path.realpath(sys.argv[1]))[0]
29 to_dir = os.path.split(os.path.realpath(sys.argv[2]))[0]
31 # The work is trivial if "to" and "from" are in the same directory.
32 if from_dir == to_dir:
35 shutil.copy(sys.argv[1], sys.argv[2])
40 # Ok, they're in different directories. The .fig file must be modified.
43 # We're looking for a line of text that defines an entry of
44 # type '2' (a polyline), subtype '5' (an external picture file).
45 # The line has 14 other data fields.
46 patternline = re.compile(br'^\s*2\s+5(\s+[0-9.+-]+){14}\s*$')
47 emptyline = re.compile(br'^\s*$')
48 commentline = re.compile(br'^\s*#.*$')
49 # we allow space in path name
50 figureline = re.compile(br'^(\s*[01]\s*)(\S[\S ]*)(\s*)$')
52 input = open(sys.argv[1], 'rb')
53 output = open(sys.argv[2], 'wb')
55 # path in the fig is relative to this path
60 if found and not emptyline.match(line) and not commentline.match(line):
61 # The contents of the final line containing the file name
62 # are ' X <file name>', where X = 0 or 1.
63 # We extract filename and replace it with the absolute filename.
64 (pre, path, post) = figureline.match(line).groups()
65 line = pre + os.path.realpath(path) + post
67 elif patternline.match(line):