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lrzsz ver 0.12.20

    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: }