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getopt1.c

/* getopt_long and getopt_long_only entry points for GNU getopt.
   Copyright (C) 1987,88,89,90,91,92,93,94,96,97 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library 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.

   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
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public
   License along with the GNU C Library; see the file COPYING.LIB.  If not,
   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
   Boston, MA 02111-1307, USA.  */

#include "getopt.h"

#if !defined (__STDC__) || !__STDC__
/* This is a separate conditional since some stdc systems
   reject `defined (const)'.  */
#ifndef const
#define const
#endif
#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.  */

#define GETOPT_INTERFACE_VERSION 2
#if !defined (_LIBC) && defined (__GLIBC__) && __GLIBC__ >= 2
#include <gnu-versions.h>
#if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION
#define ELIDE_CODE
#endif
#endif

#ifndef ELIDE_CODE

/* This needs to come after some library #include
   to get __GNU_LIBRARY__ defined.  */
#ifdef __GNU_LIBRARY__
#include <stdlib.h>
#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                        /* Not ELIDE_CODE.  */

#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 == -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 */

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