1/* getopt_long and getopt_long_only entry points for GNU getopt.
2   Copyright (C) 1987, 88, 89, 90, 91, 92, 1993, 1994
3	Free Software Foundation, Inc.
4
5This file is part of the GNU C Library.  Its master source is NOT part of
6the C library, however.  The master source lives in /gd/gnu/lib.
7
8The GNU C Library is free software; you can redistribute it and/or
9modify it under the terms of the GNU Library General Public License as
10published by the Free Software Foundation; either version 2 of the
11License, or (at your option) any later version.
12
13The GNU C Library is distributed in the hope that it will be useful,
14but WITHOUT ANY WARRANTY; without even the implied warranty of
15MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
16Library General Public License for more details.
17
18You should have received a copy of the GNU Library General Public
19License along with the GNU C Library; see the file COPYING.LIB.  If
20not, write to the Free Software Foundation, Inc., 675 Mass Ave,
21Cambridge, MA 02139, 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#if defined (_LIBC) || !defined (__GNU_LIBRARY__)
48
49
50/* This needs to come after some library #include
51   to get __GNU_LIBRARY__ defined.  */
52#ifdef __GNU_LIBRARY__
53#include <stdlib.h>
54#else
55char *getenv ();
56#endif
57
58#ifndef	NULL
59#define NULL 0
60#endif
61
62int
63getopt_long (argc, argv, options, long_options, opt_index)
64     int argc;
65     char *const *argv;
66     const char *options;
67     const struct option *long_options;
68     int *opt_index;
69{
70  return _getopt_internal (argc, argv, options, long_options, opt_index, 0);
71}
72
73/* Like getopt_long, but '-' as well as '--' can indicate a long option.
74   If an option that starts with '-' (not '--') doesn't match a long option,
75   but does match a short option, it is parsed as a short option
76   instead.  */
77
78int
79getopt_long_only (argc, argv, options, long_options, opt_index)
80     int argc;
81     char *const *argv;
82     const char *options;
83     const struct option *long_options;
84     int *opt_index;
85{
86  return _getopt_internal (argc, argv, options, long_options, opt_index, 1);
87}
88
89
90#endif	/* _LIBC or not __GNU_LIBRARY__.  */
91
92#ifdef TEST
93
94#include <stdio.h>
95
96int
97main (argc, argv)
98     int argc;
99     char **argv;
100{
101  int c;
102  int digit_optind = 0;
103
104  while (1)
105    {
106      int this_option_optind = optind ? optind : 1;
107      int option_index = 0;
108      static struct option long_options[] =
109      {
110	{"add", 1, 0, 0},
111	{"append", 0, 0, 0},
112	{"delete", 1, 0, 0},
113	{"verbose", 0, 0, 0},
114	{"create", 0, 0, 0},
115	{"file", 1, 0, 0},
116	{0, 0, 0, 0}
117      };
118
119      c = getopt_long (argc, argv, "abc:d:0123456789",
120		       long_options, &option_index);
121      if (c == EOF)
122	break;
123
124      switch (c)
125	{
126	case 0:
127	  printf ("option %s", long_options[option_index].name);
128	  if (optarg)
129	    printf (" with arg %s", optarg);
130	  printf ("\n");
131	  break;
132
133	case '0':
134	case '1':
135	case '2':
136	case '3':
137	case '4':
138	case '5':
139	case '6':
140	case '7':
141	case '8':
142	case '9':
143	  if (digit_optind != 0 && digit_optind != this_option_optind)
144	    printf ("digits occur in two different argv-elements.\n");
145	  digit_optind = this_option_optind;
146	  printf ("option %c\n", c);
147	  break;
148
149	case 'a':
150	  printf ("option a\n");
151	  break;
152
153	case 'b':
154	  printf ("option b\n");
155	  break;
156
157	case 'c':
158	  printf ("option c with value `%s'\n", optarg);
159	  break;
160
161	case 'd':
162	  printf ("option d with value `%s'\n", optarg);
163	  break;
164
165	case '?':
166	  break;
167
168	default:
169	  printf ("?? getopt returned character code 0%o ??\n", c);
170	}
171    }
172
173  if (optind < argc)
174    {
175      printf ("non-option ARGV-elements: ");
176      while (optind < argc)
177	printf ("%s ", argv[optind++]);
178      printf ("\n");
179    }
180
181  exit (0);
182}
183
184#endif /* TEST */
185