xref: /titanic_41/usr/src/lib/libast/common/comp/getopt.c (revision 72f0806acd90f56fb47a8087c33cfeaec527fdda)
1 /***********************************************************************
2 *                                                                      *
3 *               This software is part of the ast package               *
4 *          Copyright (c) 1985-2009 AT&T Intellectual Property          *
5 *                      and is licensed under the                       *
6 *                  Common Public License, Version 1.0                  *
7 *                    by AT&T Intellectual Property                     *
8 *                                                                      *
9 *                A copy of the License is available at                 *
10 *            http://www.opensource.org/licenses/cpl1.0.txt             *
11 *         (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9)         *
12 *                                                                      *
13 *              Information and Software Systems Research               *
14 *                            AT&T Research                             *
15 *                           Florham Park NJ                            *
16 *                                                                      *
17 *                 Glenn Fowler <gsf@research.att.com>                  *
18 *                  David Korn <dgk@research.att.com>                   *
19 *                   Phong Vo <kpv@research.att.com>                    *
20 *                                                                      *
21 ***********************************************************************/
22 #pragma prototyped
23 
24 #include <ast.h>
25 
26 #undef	_lib_getopt	/* we can satisfy the api */
27 
28 #if _lib_getopt
29 
30 NoN(getopt)
31 
32 #else
33 
34 #undef	_BLD_ast	/* enable ast imports since we're user static */
35 
36 #include <error.h>
37 #include <option.h>
38 
39 int		opterr = 1;
40 int		optind = 1;
41 int		optopt = 0;
42 char*		optarg = 0;
43 
44 static int	lastoptind;
45 
46 extern int
47 getopt(int argc, char* const* argv, const char* optstring)
48 {
49 	int	n;
50 
51 	NoP(argc);
52 	opt_info.index = (optind > 1 || optind == lastoptind) ? optind : 0;
53 	if (opt_info.index >= argc)
54 		return -1;
55 	switch (n = optget((char**)argv, optstring))
56 	{
57 	case ':':
58 		n = '?';
59 		/*FALLTHROUGH*/
60 	case '?':
61 		if (opterr && (!optstring || *optstring != ':'))
62 		{
63 			if (!error_info.id)
64 				error_info.id = argv[0];
65 			errormsg(NiL, 2, opt_info.arg);
66 		}
67 		optopt = opt_info.option[1];
68 		break;
69 	case 0:
70 		n = -1;
71 		break;
72 	}
73 	optarg = opt_info.arg;
74 	lastoptind = optind = opt_info.index;
75 	return n;
76 }
77 
78 #endif
79