1 /* Utility to accept --help and --version options as unobtrusively as possible.
2 Copyright (C) 1993, 1994 Free Software Foundation, Inc.
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2, or (at your option)
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
18 /* Jim Meyering (meyering@comco.com) */
26 #include "long-options.h"
28 static struct option const long_options[] =
30 {"help", no_argument, 0, 'h'},
31 {"version", no_argument, 0, 'v'},
35 /* Process long options --help and --version, but only if argc == 2.
36 Be careful not to gobble up `--'. */
39 parse_long_options (argc, argv, command_name, version_string, usage)
42 const char *command_name;
43 const char *version_string;
50 saved_opterr = opterr;
51 saved_optind = optind;
53 /* Don't print an error message for unrecognized options. */
57 && (c = getopt_long (argc, argv, "+", long_options, (int *) 0)) != EOF)
65 printf ("%s - %s\n", command_name, version_string);
69 /* Don't process any other long-named options. */
74 /* Restore previous value. */
75 opterr = saved_opterr;
77 /* Restore optind in case it has advanced past a leading `--'. */
78 optind = saved_optind;