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 Free Software Foundation, Inc.
3 
4    This file is part of the GNU C Library.  Its master source is NOT part of
5    the C library, however.  The master source lives in /gd/gnu/lib.
6 
7    The GNU C Library is free software; you can redistribute it and/or
8    modify it under the terms of the GNU Library General Public License as
9    published by the Free Software Foundation; either version 2 of the
10    License, or (at your option) any later version.
11 
12    The GNU C Library is distributed in the hope that it will be useful,
13    but WITHOUT ANY WARRANTY; without even the implied warranty of
14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15    Library General Public License for more details.
16 
17    You should have received a copy of the GNU Library General Public
18    License along with the GNU C Library; see the file COPYING.LIB.  If not,
19    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
20    Boston, MA 02111-1307, USA.  */
21 
22 #ifdef HAVE_CONFIG_H
23 #include <config.h>
24 #endif
25 
26 #include "getopt.h"
27 
28 #if !defined (__STDC__) || !__STDC__
29 /* This is a separate conditional since some stdc systems
30    reject `defined (const)'.  */
31 #ifndef MSDOS
32 #ifndef const
33 #define const
34 #endif
35 #endif
36 #endif
37 
38 #include <stdio.h>
39 
40 /* Comment out all this code if we are using the GNU C Library, and are not
41    actually compiling the library itself.  This code is part of the GNU C
42    Library, but also included in many other GNU distributions.  Compiling
43    and linking in this code is a waste when using the GNU C library
44    (especially if it is a shared library).  Rather than having every GNU
45    program understand `configure --with-gnu-libc' and omit the object files,
46    it is simpler to just do this in the source for each such file.  */
47 
48 #define GETOPT_INTERFACE_VERSION 2
49 #if !defined (_LIBC) && defined (__GLIBC__) && __GLIBC__ >= 2
50 #include <gnu-versions.h>
51 #if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION
52 #define ELIDE_CODE
53 #endif
54 #endif
55 
56 #ifndef ELIDE_CODE
57 
58 
59 /* This needs to come after some library #include
60    to get __GNU_LIBRARY__ defined.  */
61 #ifdef __GNU_LIBRARY__
62 #include <stdlib.h>
63 #endif
64 
65 #ifndef	NULL
66 #define NULL 0
67 #endif
68 
69 int
getopt_long(argc,argv,options,long_options,opt_index)70 getopt_long (argc, argv, options, long_options, opt_index)
71      int argc;
72      char *const *argv;
73      const char *options;
74      const struct option *long_options;
75      int *opt_index;
76 {
77   return _getopt_internal (argc, argv, options, long_options, opt_index, 0);
78 }
79 
80 /* Like getopt_long, but '-' as well as '--' can indicate a long option.
81    If an option that starts with '-' (not '--') doesn't match a long option,
82    but does match a short option, it is parsed as a short option
83    instead.  */
84 
85 int
getopt_long_only(argc,argv,options,long_options,opt_index)86 getopt_long_only (argc, argv, options, long_options, opt_index)
87      int argc;
88      char *const *argv;
89      const char *options;
90      const struct option *long_options;
91      int *opt_index;
92 {
93   return _getopt_internal (argc, argv, options, long_options, opt_index, 1);
94 }
95 
96 
97 #endif	/* Not ELIDE_CODE.  */
98 
99 #ifdef TEST
100 
101 #include <stdio.h>
102 
103 int
main(argc,argv)104 main (argc, argv)
105      int argc;
106      char **argv;
107 {
108   int c;
109   int digit_optind = 0;
110 
111   while (1)
112     {
113       int this_option_optind = optind ? optind : 1;
114       int option_index = 0;
115       static struct option long_options[] =
116       {
117 	{"add", 1, 0, 0},
118 	{"append", 0, 0, 0},
119 	{"delete", 1, 0, 0},
120 	{"verbose", 0, 0, 0},
121 	{"create", 0, 0, 0},
122 	{"file", 1, 0, 0},
123 	{0, 0, 0, 0}
124       };
125 
126       c = getopt_long (argc, argv, "abc:d:0123456789",
127 		       long_options, &option_index);
128       if (c == -1)
129 	break;
130 
131       switch (c)
132 	{
133 	case 0:
134 	  printf ("option %s", long_options[option_index].name);
135 	  if (optarg)
136 	    printf (" with arg %s", optarg);
137 	  printf ("\n");
138 	  break;
139 
140 	case '0':
141 	case '1':
142 	case '2':
143 	case '3':
144 	case '4':
145 	case '5':
146 	case '6':
147 	case '7':
148 	case '8':
149 	case '9':
150 	  if (digit_optind != 0 && digit_optind != this_option_optind)
151 	    printf ("digits occur in two different argv-elements.\n");
152 	  digit_optind = this_option_optind;
153 	  printf ("option %c\n", c);
154 	  break;
155 
156 	case 'a':
157 	  printf ("option a\n");
158 	  break;
159 
160 	case 'b':
161 	  printf ("option b\n");
162 	  break;
163 
164 	case 'c':
165 	  printf ("option c with value `%s'\n", optarg);
166 	  break;
167 
168 	case 'd':
169 	  printf ("option d with value `%s'\n", optarg);
170 	  break;
171 
172 	case '?':
173 	  break;
174 
175 	default:
176 	  printf ("?? getopt returned character code 0%o ??\n", c);
177 	}
178     }
179 
180   if (optind < argc)
181     {
182       printf ("non-option ARGV-elements: ");
183       while (optind < argc)
184 	printf ("%s ", argv[optind++]);
185       printf ("\n");
186     }
187 
188   exit (0);
189 }
190 
191 #endif /* TEST */
192