-#! /usr/bin/env python
-# This script converts a xfig file into Postscript/LaTeX files
-
-import sys
-import os
-
-filename = sys.argv[1]
-basename = os.path.splitext(filename)[0]
-parameters = sys.argv[2:]
-
-pid = os.fork()
-if pid == 0:
- os.execvp("fig2dev", ["fig2dev", "-Lpstex"] + parameters + [filename, basename + ".eps"])
- print "fig2dev did not work"
- os.exit(1)
-os.wait()
-
-pid = os.fork()
-if pid == 0:
- os.execvp("fig2dev", ["fig2dev", "-Lpstex_t", "-p" + basename] + parameters + [filename, basename + ".pstex_t"])
- print "fig2dev did not work the second time"
- os.exit(1)
-os.wait()
+# file fig2pstex.py
+# This file is part of LyX, the document processor.
+# Licence details can be found in the file COPYING.
+#
+# \author Angus Leeming
+# \author Bo Peng
+#
+# Full author contact details are available in file CREDITS
+
+
+# This script converts an XFIG image to something that latex can process
+# into high quality PostScript.
+
+# Usage:
+# python fig2pstex.py ${base}.fig ${base}.pstex
+# This command generates
+# ${base}.eps the converted eps file
+# ${base}.pstex a tex file that can be included in your latex document
+# using '\input{${output}}'.
+#
+# Note:
+# Do not use this command as
+# python fig2pstex.py file.fig file.eps
+# the real eps file will be overwritten by a tex file named file.eps.
+#
+
+import os, sys
+
+# We expect two args, the names of the input and output files.
+if len(sys.argv) != 3:
+ sys.exit(1)
+
+input, output = sys.argv[1:]
+
+# Fail silently if the file doesn't exist
+if not os.path.isfile(input):
+ sys.exit(0)
+
+# Strip the extension from ${output}
+outbase = os.path.splitext(output)[0]
+
+# Generate the EPS file
+# Generate the PSTEX_T file
+if os.system(f'fig2dev -Lpstex {input} {outbase}.eps') != 0 or \
+ os.system(f'fig2dev -Lpstex_t -p{outbase} {input} {output}') != 0:
+ print ('fig2dev fails')
+ sys.exit(1)