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Annotation of embedaddon/lrzsz/lib/long-options.c, revision 1.1.1.1

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: }