1 /* Utility to accept --help and --version options as unobtrusively as possible.
3 Copyright (C) 1993, 1994, 1998, 1999, 2000, 2002, 2003, 2004, 2005,
4 2006 Free Software Foundation, Inc.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software Foundation,
18 Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
20 /* Written by Jim Meyering. */
25 #include "long-options.h"
32 #include "version-etc.h"
34 static struct option const long_options[] =
36 {"help", no_argument, NULL, 'h'},
37 {"version", no_argument, NULL, 'v'},
41 /* Process long options --help and --version, but only if argc == 2.
42 Be careful not to gobble up `--'. */
45 parse_long_options (int argc,
47 const char *command_name,
50 void (*usage_func) (int),
51 /* const char *author1, ...*/ ...)
56 saved_opterr = opterr;
58 /* Don't print an error message for unrecognized options. */
62 && (c = getopt_long (argc, argv, "+", long_options, NULL)) != -1)
67 (*usage_func) (EXIT_SUCCESS);
72 va_start (authors, usage_func);
73 version_etc_va (stdout, command_name, package, version, authors);
78 /* Don't process any other long-named options. */
83 /* Restore previous value. */
84 opterr = saved_opterr;
86 /* Reset this to zero so that getopt internals get initialized from
87 the probably-new parameters when/if getopt is called later. */