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112 lines
3.1 KiB
Python
112 lines
3.1 KiB
Python
'''
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file clean_dvi.py
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This file is part of LyX, the document processor.
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Licence details can be found in the file COPYING
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or at http://www.lyx.org/about/licence.php
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author Angus Leeming
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Full author contact details are available in the file CREDITS
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or at http://www.lyx.org/about/credits.php
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Usage:
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python clean_dvi.py infile.dvi outfile.dvi
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clean_dvi modifies the input .dvi file so that
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dvips and yap (a dvi viewer on Windows) can find
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any embedded PostScript files whose names are protected
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with "-quotes.
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It works by:
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1 translating the machine readable .dvi file to human
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readable .dtl form,
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2 manipulating any references to external files
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3 translating the .dtl file back to .dvi format.
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It requires dv2dt and dt2dv from the DTL dviware package
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http://www.ctan.org/tex-archive/dviware/dtl/
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'''
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import os, re, subprocess, sys
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def usage(prog_name):
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return 'Usage: %s in.dvi out.dvi\n' \
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% os.path.basename(prog_name)
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def warning(message):
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sys.stderr.write(message + '\n')
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def error(message):
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sys.stderr.write(message + '\n')
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sys.exit(1)
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def manipulated_dtl(data):
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psfile_re = re.compile(r'(special1 +)([0-9]+)( +\'PSfile=")(.*)(" llx=.*)')
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lines = data.split('\n')
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for i in range(len(lines)):
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line = lines[i]
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match = psfile_re.match(line)
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if match != None:
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file = match.group(4)
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filelen = len(file)
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file = file.replace('"', '')
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# Don't forget to update the length of the string too...
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strlen = int(match.group(2)) - (filelen - len(file))
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lines[i] = '%s%d%s%s%s' \
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% ( match.group(1), strlen, match.group(3),
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file, match.group(5) )
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return '\n'.join(lines)
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def main(argv):
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# First establish that the expected information has
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# been input on the command line and whether the
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# required executables exist.
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if len(argv) != 3:
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error(usage(argv[0]))
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infile = argv[1]
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outfile = argv[2]
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if not os.path.exists(infile):
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error('Unable to read "%s"\n' % infile)
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# Convert the input .dvi file to .dtl format.
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if os.name == 'nt':
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unix = False
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else:
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unix = True
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dv2dt_call = 'dv2dt "%s"' % infile
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dv2dt_pipe = subprocess.Popen(dv2dt_call, universal_newlines=True, \
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stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE, \
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shell=unix, close_fds=unix)
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(dv2dt_stdin, dv2dt_stdout, dv2dt_stderr) = \
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(dv2dt_pipe.stdin, dv2dt_pipe.stdout, dv2dt_pipe.stderr)
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dv2dt_stdin.close()
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dv2dt_data = dv2dt_stdout.read()
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dv2dt_status = dv2dt_stdout.close()
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if dv2dt_status != None or len(dv2dt_data) == 0:
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dv2dt_err = dv2dt_stderr.read()
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error(f"Failed: {dv2dt_call}\n{dv2dt_err}\n" )
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# Manipulate the .dtl file.
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dtl_data = manipulated_dtl(dv2dt_data)
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if dtl_data == None:
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error("Failed to manipulate the dtl file")
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# Convert this .dtl file back to .dvi format.
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dt2dv_call = 'dt2dv -si "%s"' % outfile
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dt2dv_stdin = os.popen(dt2dv_call, 'w')
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dt2dv_stdin.write(dtl_data)
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if __name__ == "__main__":
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main(sys.argv)
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