1/* getopt_long and getopt_long_only entry points for GNU getopt.
2   Copyright (C) 1987,88,89,90,91,92,93,94,96,97,98
3     Free Software Foundation, Inc.
4   This file is part of the GNU C Library.
5
6   This program is free software; you can redistribute it and/or modify
7   it under the terms of the GNU General Public License as published by
8   the Free Software Foundation; either version 2, or (at your option)
9   any later version.
10
11   This program is distributed in the hope that it will be useful,
12   but WITHOUT ANY WARRANTY; without even the implied warranty of
13   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14   GNU General Public License for more details.
15
16   You should have received a copy of the GNU General Public License
17   along with this program; if not, write to the Free Software Foundation,
18   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
19
20#ifdef HAVE_CONFIG_H
21#include <config.h>
22#endif
23
24#include "getopt.h"
25
26#if !defined __STDC__ || !__STDC__
27/* This is a separate conditional since some stdc systems
28   reject `defined (const)'.  */
29#ifndef const
30#define const
31#endif
32#endif
33
34#include <stdio.h>
35
36/* Comment out all this code if we are using the GNU C Library, and are not
37   actually compiling the library itself.  This code is part of the GNU C
38   Library, but also included in many other GNU distributions.  Compiling
39   and linking in this code is a waste when using the GNU C library
40   (especially if it is a shared library).  Rather than having every GNU
41   program understand `configure --with-gnu-libc' and omit the object files,
42   it is simpler to just do this in the source for each such file.  */
43
44#define GETOPT_INTERFACE_VERSION 2
45#if !defined _LIBC && defined __GLIBC__ && __GLIBC__ >= 2
46#include <gnu-versions.h>
47#if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION
48#define ELIDE_CODE
49#endif
50#endif
51
52#ifndef ELIDE_CODE
53
54
55/* This needs to come after some library #include
56   to get __GNU_LIBRARY__ defined.  */
57#ifdef __GNU_LIBRARY__
58#include <stdlib.h>
59#endif
60
61#ifndef	NULL
62#define NULL 0
63#endif
64
65int
66getopt_long (argc, argv, options, long_options, opt_index)
67     int argc;
68     char *const *argv;
69     const char *options;
70     const struct option *long_options;
71     int *opt_index;
72{
73  return _getopt_internal (argc, argv, options, long_options, opt_index, 0);
74}
75
76/* Like getopt_long, but '-' as well as '--' can indicate a long option.
77   If an option that starts with '-' (not '--') doesn't match a long option,
78   but does match a short option, it is parsed as a short option
79   instead.  */
80
81int
82getopt_long_only (argc, argv, options, long_options, opt_index)
83     int argc;
84     char *const *argv;
85     const char *options;
86     const struct option *long_options;
87     int *opt_index;
88{
89  return _getopt_internal (argc, argv, options, long_options, opt_index, 1);
90}
91
92
93#endif	/* Not ELIDE_CODE.  */
94
95#ifdef TEST
96
97#include <stdio.h>
98
99int
100main (argc, argv)
101     int argc;
102     char **argv;
103{
104  int c;
105  int digit_optind = 0;
106
107  while (1)
108    {
109      int this_option_optind = optind ? optind : 1;
110      int option_index = 0;
111      static struct option long_options[] =
112      {
113	{"add", 1, 0, 0},
114	{"append", 0, 0, 0},
115	{"delete", 1, 0, 0},
116	{"verbose", 0, 0, 0},
117	{"create", 0, 0, 0},
118	{"file", 1, 0, 0},
119	{0, 0, 0, 0}
120      };
121
122      c = getopt_long (argc, argv, "abc:d:0123456789",
123		       long_options, &option_index);
124      if (c == -1)
125	break;
126
127      switch (c)
128	{
129	case 0:
130	  printf ("option %s", long_options[option_index].name);
131	  if (optarg)
132	    printf (" with arg %s", optarg);
133	  printf ("\n");
134	  break;
135
136	case '0':
137	case '1':
138	case '2':
139	case '3':
140	case '4':
141	case '5':
142	case '6':
143	case '7':
144	case '8':
145	case '9':
146	  if (digit_optind != 0 && digit_optind != this_option_optind)
147	    printf ("digits occur in two different argv-elements.\n");
148	  digit_optind = this_option_optind;
149	  printf ("option %c\n", c);
150	  break;
151
152	case 'a':
153	  printf ("option a\n");
154	  break;
155
156	case 'b':
157	  printf ("option b\n");
158	  break;
159
160	case 'c':
161	  printf ("option c with value `%s'\n", optarg);
162	  break;
163
164	case 'd':
165	  printf ("option d with value `%s'\n", optarg);
166	  break;
167
168	case '?':
169	  break;
170
171	default:
172	  printf ("?? getopt returned character code 0%o ??\n", c);
173	}
174    }
175
176  if (optind < argc)
177    {
178      printf ("non-option ARGV-elements: ");
179      while (optind < argc)
180	printf ("%s ", argv[optind++]);
181      printf ("\n");
182    }
183
184  exit (0);
185}
186
187#endif /* TEST */
188