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
5   NOTE: The canonical source of this file is maintained with the GNU C Library.
6   Bugs can be reported to bug-glibc@gnu.org.
7
8   This program is free software; you can redistribute it and/or modify it
9   under the terms of the GNU General Public License as published by the
10   Free Software Foundation; either version 2, or (at your option) any
11   later version.
12
13   This program is distributed in the hope that it will be useful,
14   but WITHOUT ANY WARRANTY; without even the implied warranty of
15   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16   GNU General Public License for more details.
17
18   You should have received a copy of the GNU General Public License
19   along with this program; if not, write to the Free Software
20   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
21   USA.  */
22
23#ifdef HAVE_CONFIG_H
24#include <config.h>
25#endif
26
27#include "getopt.h"
28
29#if !defined __STDC__ || !__STDC__
30/* This is a separate conditional since some stdc systems
31   reject `defined (const)'.  */
32#ifndef const
33#define const
34#endif
35#endif
36
37#include <stdio.h>
38
39/* Comment out all this code if we are using the GNU C Library, and are not
40   actually compiling the library itself.  This code is part of the GNU C
41   Library, but also included in many other GNU distributions.  Compiling
42   and linking in this code is a waste when using the GNU C library
43   (especially if it is a shared library).  Rather than having every GNU
44   program understand `configure --with-gnu-libc' and omit the object files,
45   it is simpler to just do this in the source for each such file.  */
46
47#define GETOPT_INTERFACE_VERSION 2
48#if !defined _LIBC && defined __GLIBC__ && __GLIBC__ >= 2
49#include <gnu-versions.h>
50#if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION
51#define ELIDE_CODE
52#endif
53#endif
54
55#ifndef ELIDE_CODE
56
57
58/* This needs to come after some library #include
59   to get __GNU_LIBRARY__ defined.  */
60#ifdef __GNU_LIBRARY__
61#include <stdlib.h>
62#endif
63
64#ifndef	NULL
65#define NULL 0
66#endif
67
68int
69getopt_long (argc, argv, options, long_options, opt_index)
70     int argc;
71     char *const *argv;
72     const char *options;
73     const struct option *long_options;
74     int *opt_index;
75{
76  return _getopt_internal (argc, argv, options, long_options, opt_index, 0);
77}
78
79/* Like getopt_long, but '-' as well as '--' can indicate a long option.
80   If an option that starts with '-' (not '--') doesn't match a long option,
81   but does match a short option, it is parsed as a short option
82   instead.  */
83
84int
85getopt_long_only (argc, argv, options, long_options, opt_index)
86     int argc;
87     char *const *argv;
88     const char *options;
89     const struct option *long_options;
90     int *opt_index;
91{
92  return _getopt_internal (argc, argv, options, long_options, opt_index, 1);
93}
94
95
96#endif	/* Not ELIDE_CODE.  */
97
98#ifdef TEST
99
100#include <stdio.h>
101
102int
103main (argc, argv)
104     int argc;
105     char **argv;
106{
107  int c;
108  int digit_optind = 0;
109
110  while (1)
111    {
112      int this_option_optind = optind ? optind : 1;
113      int option_index = 0;
114      static struct option long_options[] =
115      {
116	{"add", 1, 0, 0},
117	{"append", 0, 0, 0},
118	{"delete", 1, 0, 0},
119	{"verbose", 0, 0, 0},
120	{"create", 0, 0, 0},
121	{"file", 1, 0, 0},
122	{0, 0, 0, 0}
123      };
124
125      c = getopt_long (argc, argv, "abc:d:0123456789",
126		       long_options, &option_index);
127      if (c == -1)
128	break;
129
130      switch (c)
131	{
132	case 0:
133	  printf ("option %s", long_options[option_index].name);
134	  if (optarg)
135	    printf (" with arg %s", optarg);
136	  printf ("\n");
137	  break;
138
139	case '0':
140	case '1':
141	case '2':
142	case '3':
143	case '4':
144	case '5':
145	case '6':
146	case '7':
147	case '8':
148	case '9':
149	  if (digit_optind != 0 && digit_optind != this_option_optind)
150	    printf ("digits occur in two different argv-elements.\n");
151	  digit_optind = this_option_optind;
152	  printf ("option %c\n", c);
153	  break;
154
155	case 'a':
156	  printf ("option a\n");
157	  break;
158
159	case 'b':
160	  printf ("option b\n");
161	  break;
162
163	case 'c':
164	  printf ("option c with value `%s'\n", optarg);
165	  break;
166
167	case 'd':
168	  printf ("option d with value `%s'\n", optarg);
169	  break;
170
171	case '?':
172	  break;
173
174	default:
175	  printf ("?? getopt returned character code 0%o ??\n", c);
176	}
177    }
178
179  if (optind < argc)
180    {
181      printf ("non-option ARGV-elements: ");
182      while (optind < argc)
183	printf ("%s ", argv[optind++]);
184      printf ("\n");
185    }
186
187  exit (0);
188}
189
190#endif /* TEST */
191