/* Utility to accept --help and --version options as unobtrusively as possible.
- Copyright (C) 1993, 1994 Free Software Foundation, Inc.
- This program is free software; you can redistribute it and/or modify
+ Copyright (C) 1993-1994, 1998-2000, 2002-2006, 2009-2010 Free Software
+ Foundation, Inc.
+
+ This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2, or (at your option)
- any later version.
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software Foundation,
- Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
/* Written by Jim Meyering. */
-#ifdef HAVE_CONFIG_H
#include <config.h>
-#endif
+/* Specification. */
+#include "long-options.h"
+
+#include <stdarg.h>
#include <stdio.h>
+#include <stdlib.h>
#include <getopt.h>
-#include "long-options.h"
+
+#include "version-etc.h"
static struct option const long_options[] =
{
- {"help", no_argument, 0, 'h'},
- {"version", no_argument, 0, 'v'},
- {0, 0, 0, 0}
+ {"help", no_argument, NULL, 'h'},
+ {"version", no_argument, NULL, 'v'},
+ {NULL, 0, NULL, 0}
};
/* Process long options --help and --version, but only if argc == 2.
Be careful not to gobble up `--'. */
void
-parse_long_options (argc, argv, command_name, package, version, usage)
- int argc;
- char **argv;
- const char *command_name;
- const char *package;
- const char *version;
- void (*usage)();
+parse_long_options (int argc,
+ char **argv,
+ const char *command_name,
+ const char *package,
+ const char *version,
+ void (*usage_func) (int),
+ /* const char *author1, ...*/ ...)
{
int c;
int saved_opterr;
- int saved_optind;
saved_opterr = opterr;
- saved_optind = optind;
/* Don't print an error message for unrecognized options. */
opterr = 0;
if (argc == 2
- && (c = getopt_long (argc, argv, "+", long_options, (int *) 0)) != EOF)
+ && (c = getopt_long (argc, argv, "+", long_options, NULL)) != -1)
{
switch (c)
- {
- case 'h':
- (*usage) (0);
-
- case 'v':
- printf ("%s (%s) %s\n", command_name, package, version);
- exit (0);
-
- default:
- /* Don't process any other long-named options. */
- break;
- }
+ {
+ case 'h':
+ (*usage_func) (EXIT_SUCCESS);
+
+ case 'v':
+ {
+ va_list authors;
+ va_start (authors, usage_func);
+ version_etc_va (stdout, command_name, package, version, authors);
+ exit (0);
+ }
+
+ default:
+ /* Don't process any other long-named options. */
+ break;
+ }
}
/* Restore previous value. */
opterr = saved_opterr;
- /* Restore optind in case it has advanced past a leading `--'. */
- optind = saved_optind;
+ /* Reset this to zero so that getopt internals get initialized from
+ the probably-new parameters when/if getopt is called later. */
+ optind = 0;
}