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   The GNU C Library is free software; you can redistribute it and/or
7   modify it under the terms of the GNU Library General Public License as
8   published by the Free Software Foundation; either version 2 of the
9   License, or (at your option) any later version.
10
11   The GNU C Library 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 GNU
14   Library General Public License for more details.
15
16   You should have received a copy of the GNU Library General Public
17   License along with the GNU C Library; see the file COPYING.LIB.  If not,
18   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19   Boston, MA 02111-1307, USA.  */
20
21#ifdef HAVE_CONFIG_H
22#include <config.h>
23#endif
24
25#include "getopt.h"
26
27#if !defined __STDC__ || !__STDC__
28/* This is a separate conditional since some stdc systems
29   reject `defined (const)'.  */
30#ifndef const
31#define const
32#endif
33#endif
34
35#include <stdio.h>
36
37/* Comment out all this code if we are using the GNU C Library, and are not
38   actually compiling the library itself.  This code is part of the GNU C
39   Library, but also included in many other GNU distributions.  Compiling
40   and linking in this code is a waste when using the GNU C library
41   (especially if it is a shared library).  Rather than having every GNU
42   program understand `configure --with-gnu-libc' and omit the object files,
43   it is simpler to just do this in the source for each such file.  */
44
45#define GETOPT_INTERFACE_VERSION 2
46#if !defined _LIBC && defined __GLIBC__ && __GLIBC__ >= 2
47#include <gnu-versions.h>
48#if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION
49#define ELIDE_CODE
50#endif
51#endif
52
53#ifndef ELIDE_CODE
54
55
56/* This needs to come after some library #include
57   to get __GNU_LIBRARY__ defined.  */
58#ifdef __GNU_LIBRARY__
59#include <stdlib.h>
60#endif
61
62#ifndef	NULL
63#define NULL 0
64#endif
65
66int
67getopt_long (argc, argv, options, long_options, opt_index)
68     int argc;
69     char *const *argv;
70     const char *options;
71     const struct option *long_options;
72     int *opt_index;
73{
74  return _getopt_internal (argc, argv, options, long_options, opt_index, 0);
75}
76
77/* Like getopt_long, but '-' as well as '--' can indicate a long option.
78   If an option that starts with '-' (not '--') doesn't match a long option,
79   but does match a short option, it is parsed as a short option
80   instead.  */
81
82int
83getopt_long_only (argc, argv, options, long_options, opt_index)
84     int argc;
85     char *const *argv;
86     const char *options;
87     const struct option *long_options;
88     int *opt_index;
89{
90  return _getopt_internal (argc, argv, options, long_options, opt_index, 1);
91}
92
93
94#endif	/* Not ELIDE_CODE.  */
95
96#ifdef TEST
97
98#include <stdio.h>
99
100int
101main (argc, argv)
102     int argc;
103     char **argv;
104{
105  int c;
106  int digit_optind = 0;
107
108  while (1)
109    {
110      int this_option_optind = optind ? optind : 1;
111      int option_index = 0;
112      static struct option long_options[] =
113      {
114	{"add", 1, 0, 0},
115	{"append", 0, 0, 0},
116	{"delete", 1, 0, 0},
117	{"verbose", 0, 0, 0},
118	{"create", 0, 0, 0},
119	{"file", 1, 0, 0},
120	{0, 0, 0, 0}
121      };
122
123      c = getopt_long (argc, argv, "abc:d:0123456789",
124		       long_options, &option_index);
125      if (c == -1)
126	break;
127
128      switch (c)
129	{
130	case 0:
131	  printf ("option %s", long_options[option_index].name);
132	  if (optarg)
133	    printf (" with arg %s", optarg);
134	  printf ("\n");
135	  break;
136
137	case '0':
138	case '1':
139	case '2':
140	case '3':
141	case '4':
142	case '5':
143	case '6':
144	case '7':
145	case '8':
146	case '9':
147	  if (digit_optind != 0 && digit_optind != this_option_optind)
148	    printf ("digits occur in two different argv-elements.\n");
149	  digit_optind = this_option_optind;
150	  printf ("option %c\n", c);
151	  break;
152
153	case 'a':
154	  printf ("option a\n");
155	  break;
156
157	case 'b':
158	  printf ("option b\n");
159	  break;
160
161	case 'c':
162	  printf ("option c with value `%s'\n", optarg);
163	  break;
164
165	case 'd':
166	  printf ("option d with value `%s'\n", optarg);
167	  break;
168
169	case '?':
170	  break;
171
172	default:
173	  printf ("?? getopt returned character code 0%o ??\n", c);
174	}
175    }
176
177  if (optind < argc)
178    {
179      printf ("non-option ARGV-elements: ");
180      while (optind < argc)
181	printf ("%s ", argv[optind++]);
182      printf ("\n");
183    }
184
185  exit (0);
186}
187
188#endif /* TEST */
189