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Annotation of embedaddon/lrzsz/lib/long-options.c, revision 1.1

1.1     ! misho       1: /* Utility to accept --help and --version options as unobtrusively as possible.
        !             2:    Copyright (C) 1993, 1994 Free Software Foundation, Inc.
        !             3: 
        !             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)
        !             7:    any later version.
        !             8: 
        !             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.
        !            13: 
        !            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.  */
        !            17: 
        !            18: /* Jim Meyering (meyering@comco.com) */
        !            19: 
        !            20: #ifdef HAVE_CONFIG_H
        !            21: #include <config.h>
        !            22: #endif
        !            23: 
        !            24: #include <stdio.h>
        !            25: #include <getopt.h>
        !            26: #include "long-options.h"
        !            27: 
        !            28: static struct option const long_options[] =
        !            29: {
        !            30:   {"help", no_argument, 0, 'h'},
        !            31:   {"version", no_argument, 0, 'v'},
        !            32:   {0, 0, 0, 0}
        !            33: };
        !            34: 
        !            35: /* Process long options --help and --version, but only if argc == 2.
        !            36:    Be careful not to gobble up `--'.  */
        !            37: void
        !            38: parse_long_options (argc, argv,version, usage)
        !            39:      int argc;
        !            40:      char **argv;
        !            41:      void (*version)();
        !            42:      void (*usage)();
        !            43: {
        !            44:   int c;
        !            45:   int saved_opterr;
        !            46:   int saved_optind;
        !            47: 
        !            48:   saved_opterr = opterr;
        !            49:   saved_optind = optind;
        !            50: 
        !            51:   /* Don't print an error message for unrecognized options.  */
        !            52:   opterr = 0;
        !            53: 
        !            54:   if (argc == 2
        !            55:       && (c = getopt_long (argc, argv, "+", long_options, (int *) 0)) != EOF)
        !            56:     {
        !            57:       switch (c)
        !            58:        {
        !            59:        case 'h':
        !            60:          (*usage) (0);
        !            61: 
        !            62:        case 'v':
        !            63:          (*version) (0);
        !            64:          /* printf ("%s (%s) %s\n", command_name, package, version_string); */
        !            65:          exit (0);
        !            66: 
        !            67:        default:
        !            68:          /* Don't process any other long-named options.  */
        !            69:          break;
        !            70:        }
        !            71:     }
        !            72: 
        !            73:   /* Restore previous value.  */
        !            74:   opterr = saved_opterr;
        !            75: 
        !            76:   /* Restore optind in case it has advanced past a leading `--'.  */
        !            77:   optind = saved_optind;
        !            78: }