BSD 4_4_Lite1 release

[unix-history] / usr / src / contrib / gawk-2.15.2 / getopt1.c

/* Getopt for GNU.
  Copyright (C) 1987, 88, 89, 90, 91, 1992 Free Software Foundation, Inc.

This file is part of the libiberty library.
Libiberty is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.

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

You should have received a copy of the GNU Library General Public
License along with libiberty; see the file COPYING.LIB.  If
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA.  */
\f
#ifdef  LIBC
/* For when compiled as part of the GNU C library.  */
#include <ansidecl.h>
#endif

#include "getopt.h"

#ifndef __STDC__
#define const
#endif

#if defined(STDC_HEADERS) || defined(__GNU_LIBRARY__) || defined (LIBC)
#include <stdlib.h>
#else /* STDC_HEADERS or __GNU_LIBRARY__ */
char *getenv ();
#endif /* STDC_HEADERS or __GNU_LIBRARY__ */

#if !defined (NULL)
#define NULL 0
#endif

int
getopt_long (argc, argv, options, long_options, opt_index)
    int argc;
    char *const *argv;
    const char *options;
    const struct option *long_options;
    int *opt_index;
{
 return _getopt_internal (argc, argv, options, long_options, opt_index, 0);
}

/* Like getopt_long, but '-' as well as '--' can indicate a long option.
  If an option that starts with '-' (not '--') doesn't match a long option,
  but does match a short option, it is parsed as a short option
  instead. */

int 
getopt_long_only (argc, argv, options, long_options, opt_index)
    int argc;
    char *const *argv;
    const char *options;
    const struct option *long_options;
    int *opt_index;
{
 return _getopt_internal (argc, argv, options, long_options, opt_index, 1);
}
\f
#ifdef TEST

#include <stdio.h>

int
main (argc, argv)
    int argc;
    char **argv;
{
 int c;
 int digit_optind = 0;

 while (1)
   {
     int this_option_optind = optind ? optind : 1;
     int option_index = 0;
     static struct option long_options[] =
     {
       {"add", 1, 0, 0},
       {"append", 0, 0, 0},
       {"delete", 1, 0, 0},
       {"verbose", 0, 0, 0},
       {"create", 0, 0, 0},
       {"file", 1, 0, 0},
       {0, 0, 0, 0}
     };

     c = getopt_long (argc, argv, "abc:d:0123456789",
                      long_options, &option_index);
     if (c == EOF)
       break;

     switch (c)
       {
       case 0:
         printf ("option %s", long_options[option_index].name);
         if (optarg)
           printf (" with arg %s", optarg);
         printf ("\n");
         break;

       case '0':
       case '1':
       case '2':
       case '3':
       case '4':
       case '5':
       case '6':
       case '7':
       case '8':
       case '9':
         if (digit_optind != 0 && digit_optind != this_option_optind)
           printf ("digits occur in two different argv-elements.\n");
         digit_optind = this_option_optind;
         printf ("option %c\n", c);
         break;

       case 'a':
         printf ("option a\n");
         break;

       case 'b':
         printf ("option b\n");
         break;

       case 'c':
         printf ("option c with value `%s'\n", optarg);
         break;

       case 'd':
         printf ("option d with value `%s'\n", optarg);
         break;

       case '?':
         break;

       default:
         printf ("?? getopt returned character code 0%o ??\n", c);
       }
   }

 if (optind < argc)
   {
     printf ("non-option ARGV-elements: ");
     while (optind < argc)
       printf ("%s ", argv[optind++]);
     printf ("\n");
   }

 exit (0);
}

#endif /* TEST */