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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 Lesser General Public
8    License as published by the Free Software Foundation; either
9    version 2.1 of the 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    Lesser General Public License for more details.
15 
16    You should have received a copy of the GNU Lesser General Public
17    License along with the GNU C Library; if not, write to the Free
18    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
19    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 
66 int
getopt_long(argc,argv,options,long_options,opt_index)67 getopt_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 
82 int
getopt_long_only(argc,argv,options,long_options,opt_index)83 getopt_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 
100 int
main(argc,argv)101 main (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