/* getopt_long and getopt_long_only entry points for GNU getopt.

   Copyright (C) 1987-2019 Free Software Foundation, Inc.

   This file is part of the GNU C Library and is also part of gnulib.

   Patches to this file should be submitted to both projects.

   The GNU C Library is free software; you can redistribute it and/or

   modify it under the terms of the GNU Lesser General Public

   License as published by the Free Software Foundation; either

   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library 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

   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public

   License along with the GNU C Library; if not, see

   <https://www.gnu.org/licenses/>.  */

#ifndef _LIBC

# include <config.h>

#endif

#include "getopt.h"

#include "getopt_int.h"

int

getopt_long (int argc, char *__getopt_argv_const *argv, const char *options,

	     const struct option *long_options, int *opt_index)

{

  return _getopt_internal (argc, (char **) argv, options, long_options,

			   opt_index, 0, 0);

}

int

_getopt_long_r (int argc, char **argv, const char *options,

		const struct option *long_options, int *opt_index,

		struct _getopt_data *d)

{

  return _getopt_internal_r (argc, argv, options, long_options, opt_index,

			     0, d, 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 (int argc, char *__getopt_argv_const *argv,

		  const char *options,

		  const struct option *long_options, int *opt_index)

{

  return _getopt_internal (argc, (char **) argv, options, long_options,

			   opt_index, 1, 0);

}

int

_getopt_long_only_r (int argc, char **argv, const char *options,

		     const struct option *long_options, int *opt_index,

		     struct _getopt_data *d)

{

  return _getopt_internal_r (argc, argv, options, long_options, opt_index,

			     1, d, 0);

}

#ifdef TEST

#include <stdio.h>

#include <stdlib.h>

int

main (int argc, char **argv)

{

  int c;

  int digit_optind = 0;

  while (1)

    {

      int this_option_optind = optind ? optind : 1;

      int option_index = 0;

      static const 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 == -1)

	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 */