1/* getopt_long and getopt_long_only entry points for GNU getopt.
2   Copyright (C) 1987, 88, 89, 90, 91, 92, 1993
3	Free Software Foundation, Inc.
4
5   This program is free software; you can redistribute it and/or modify it
6   under the terms of the GNU General Public License as published by the
7   Free Software Foundation; either version 2, or (at your option) any
8   later version.
9
10   This program is distributed in the hope that it will be useful,
11   but WITHOUT ANY WARRANTY; without even the implied warranty of
12   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13   GNU General Public License for more details.
14
15   You should have received a copy of the GNU General Public License
16   along with this program; if not, write to the Free Software
17   Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
18
19#ifdef HAVE_CONFIG_H
20#include <config.h>
21#endif
22
23#include "getopt.h"
24
25#if !__STDC__
26/* This is a separate conditional since some stdc systems
27   reject `defined (const)'.  */
28#ifndef const
29#define const
30#endif
31#endif
32
33#include <stdio.h>
34
35/* Comment out all this code if we are using the GNU C Library, and are not
36   actually compiling the library itself.  This code is part of the GNU C
37   Library, but also included in many other GNU distributions.  Compiling
38   and linking in this code is a waste when using the GNU C library
39   (especially if it is a shared library).  Rather than having every GNU
40   program understand `configure --with-gnu-libc' and omit the object files,
41   it is simpler to just do this in the source for each such file.  */
42
43#if defined (_LIBC) || !defined (__GNU_LIBRARY__)
44
45
46/* This needs to come after some library #include
47   to get __GNU_LIBRARY__ defined.  */
48#ifdef __GNU_LIBRARY__
49#include <stdlib.h>
50#else
51char *getenv ();
52#endif
53
54#ifndef	NULL
55#define NULL 0
56#endif
57
58int
59getopt_long (argc, argv, options, long_options, opt_index)
60     int argc;
61     char *const *argv;
62     const char *options;
63     const struct option *long_options;
64     int *opt_index;
65{
66  return _getopt_internal (argc, argv, options, long_options, opt_index, 0);
67}
68
69/* Like getopt_long, but '-' as well as '--' can indicate a long option.
70   If an option that starts with '-' (not '--') doesn't match a long option,
71   but does match a short option, it is parsed as a short option
72   instead.  */
73
74int
75getopt_long_only (argc, argv, options, long_options, opt_index)
76     int argc;
77     char *const *argv;
78     const char *options;
79     const struct option *long_options;
80     int *opt_index;
81{
82  return _getopt_internal (argc, argv, options, long_options, opt_index, 1);
83}
84
85
86#endif	/* _LIBC or not __GNU_LIBRARY__.  */
87
88#ifdef TEST
89
90#include <stdio.h>
91
92int
93main (argc, argv)
94     int argc;
95     char **argv;
96{
97  int c;
98  int digit_optind = 0;
99
100  while (1)
101    {
102      int this_option_optind = optind ? optind : 1;
103      int option_index = 0;
104      static struct option long_options[] =
105      {
106	{"add", 1, 0, 0},
107	{"append", 0, 0, 0},
108	{"delete", 1, 0, 0},
109	{"verbose", 0, 0, 0},
110	{"create", 0, 0, 0},
111	{"file", 1, 0, 0},
112	{0, 0, 0, 0}
113      };
114
115      c = getopt_long (argc, argv, "abc:d:0123456789",
116		       long_options, &option_index);
117      if (c == EOF)
118	break;
119
120      switch (c)
121	{
122	case 0:
123	  printf ("option %s", long_options[option_index].name);
124	  if (optarg)
125	    printf (" with arg %s", optarg);
126	  printf ("\n");
127	  break;
128
129	case '0':
130	case '1':
131	case '2':
132	case '3':
133	case '4':
134	case '5':
135	case '6':
136	case '7':
137	case '8':
138	case '9':
139	  if (digit_optind != 0 && digit_optind != this_option_optind)
140	    printf ("digits occur in two different argv-elements.\n");
141	  digit_optind = this_option_optind;
142	  printf ("option %c\n", c);
143	  break;
144
145	case 'a':
146	  printf ("option a\n");
147	  break;
148
149	case 'b':
150	  printf ("option b\n");
151	  break;
152
153	case 'c':
154	  printf ("option c with value `%s'\n", optarg);
155	  break;
156
157	case 'd':
158	  printf ("option d with value `%s'\n", optarg);
159	  break;
160
161	case '?':
162	  break;
163
164	default:
165	  printf ("?? getopt returned character code 0%o ??\n", c);
166	}
167    }
168
169  if (optind < argc)
170    {
171      printf ("non-option ARGV-elements: ");
172      while (optind < argc)
173	printf ("%s ", argv[optind++]);
174      printf ("\n");
175    }
176
177  exit (0);
178}
179
180#endif /* TEST */
181