Hamlib/lib/getopt_long.c

/* getopt_long and getopt_long_only entry points for GNU getopt.
   Copyright (C) 1987, 88, 89, 90, 91, 92, 1993
    Free Software Foundation, Inc.

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

    This program 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 General Public License for more details.

    You should have received a copy of the GNU General Public License along
    with this program; if not, write to the Free Software Foundation, Inc.,
    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include "getopt.h"

#if !__STDC__ && !defined(const) && IN_GCC
#define const
#endif

#include <stdio.h>

/* Comment out all this code if we are using the GNU C Library, and are not
   actually compiling the library itself.  This code is part of the GNU C
   Library, but also included in many other GNU distributions.  Compiling
   and linking in this code is a waste when using the GNU C library
   (especially if it is a shared library).  Rather than having every GNU
   program understand `configure --with-gnu-libc' and omit the object files,
   it is simpler to just do this in the source for each such file.  */

#if defined (_LIBC) || !defined (__GNU_LIBRARY__)


/* This needs to come after some library #include
   to get __GNU_LIBRARY__ defined.  */
#ifdef __GNU_LIBRARY__
#include <stdlib.h>
#else
char *getenv();
#endif

#ifndef 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);
}


#endif  /* _LIBC or not __GNU_LIBRARY__.  */

#ifdef TEST

#include <stdio.h>

int
main(argc, argv)
int argc;
char **argv;
{
    while (1)
    {
        int c;
        int digit_optind = 0;

        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 */

#include "getopt.c"