| /* getopt_long and getopt_long_only entry points for GNU getopt. |
| Copyright (C) 1987-2019 Free Software Foundation, Inc. |
| |
| NOTE: This source is derived from an old version taken from the GNU C |
| Library (glibc). |
| |
| 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, 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 |
| |
| #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> |
| |
| #include "getopt.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 (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 (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 (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 */ |