1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License").  You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22/*
23 * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
24 * Use is subject to license terms.
25 */
26
27#include <sys/salib.h>
28
29#define	EOF	(-1)
30
31int opterr = 1, optind = 1, optopt = 0;
32char *optarg = NULL;
33int _sp = 1;
34
35extern void warn(const char *, ...);
36
37void
38getopt_reset(void)
39{
40	opterr = 1;
41	optind = 1;
42	optopt = 0;
43	optarg = NULL;
44	_sp = 1;
45}
46
47int
48getopt(int argc, char *const *argv, const char *opts)
49{
50	char c;
51	char *cp;
52
53	if (_sp == 1) {
54		if (optind >= argc || argv[optind][0] != '-' ||
55		    argv[optind] == NULL || argv[optind][1] == '\0')
56			return (EOF);
57		else if (strcmp(argv[optind], "--") == 0) {
58			optind++;
59			return (EOF);
60		}
61	}
62	optopt = c = (unsigned char)argv[optind][_sp];
63	if (c == ':' || (cp = strchr(opts, c)) == NULL) {
64		if (opts[0] != ':')
65			warn("%s: illegal option -- %c\n", argv[0], c);
66		if (argv[optind][++_sp] == '\0') {
67			optind++;
68			_sp = 1;
69		}
70		return ('?');
71	}
72
73	if (*(cp + 1) == ':') {
74		if (argv[optind][_sp+1] != '\0')
75			optarg = &argv[optind++][_sp+1];
76		else if (++optind >= argc) {
77			if (opts[0] != ':') {
78				warn("%s: option requires an argument"
79				    " -- %c\n", argv[0], c);
80			}
81			_sp = 1;
82			optarg = NULL;
83			return (opts[0] == ':' ? ':' : '?');
84		} else
85			optarg = argv[optind++];
86		_sp = 1;
87	} else {
88		if (argv[optind][++_sp] == '\0') {
89			_sp = 1;
90			optind++;
91		}
92		optarg = NULL;
93	}
94	return (c);
95}
96