/* GNU TalkFilters - common command line parsing code
  Copyright (C) 1998 Free Software Foundation, Inc.

  This file is part of GNU Talkfilters

  GNU Talkfilters 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.

  GNU Talkfilters is distributed in the hope that it will be amusing,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with GNU Talkfilters; see the file COPYING.  If not, write to
  the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
*/

#include <stdlib.h>
#include <stddef.h>
#include <stdio.h>

#include "getopt.h"

#define HELP_OPTION 0
#define VERSION_OPTION 1

static const struct option options[] = { { "help", 0, NULL, 0  },
                                         { "version", 0, NULL, 0 },
                                         { NULL, 0, NULL, 0 } };

void parse_args(int argc, char **argv, char *help, char *version)
{
  int c, option_index;

  while((c = getopt_long(argc, argv, "", options, &option_index)) != EOF)
  {
     switch(c)
     {
     case 0:
        if(option_index == HELP_OPTION)
           fprintf(stderr, help, *argv);
        else if(option_index == VERSION_OPTION)
        {
           fputs(version, stderr);
           fputc('\n', stderr);
        }
        exit(EXIT_SUCCESS);
        break;

      default:
        fprintf(stderr, help, *argv);
        exit(EXIT_FAILURE);
        break;
     }
  }
}