1#include "config.h"
2
3#if HAVE_GETSUBOPT
4
5int dummy;
6
7#else
8
9/*	$Id: compat_getsubopt.c,v 1.5 2014/08/17 20:53:50 schwarze Exp $	*/
10/*	$OpenBSD: getsubopt.c,v 1.4 2005/08/08 08:05:36 espie Exp $	*/
11
12/*-
13 * Copyright (c) 1990, 1993
14 *	The Regents of the University of California.  All rights reserved.
15 *
16 * Redistribution and use in source and binary forms, with or without
17 * modification, are permitted provided that the following conditions
18 * are met:
19 * 1. Redistributions of source code must retain the above copyright
20 *    notice, this list of conditions and the following disclaimer.
21 * 2. Redistributions in binary form must reproduce the above copyright
22 *    notice, this list of conditions and the following disclaimer in the
23 *    documentation and/or other materials provided with the distribution.
24 * 3. Neither the name of the University nor the names of its contributors
25 *    may be used to endorse or promote products derived from this software
26 *    without specific prior written permission.
27 *
28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
31 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
38 * SUCH DAMAGE.
39 */
40
41#include <unistd.h>
42#include <stdlib.h>
43#include <string.h>
44
45int
46getsubopt(char **optionp, char * const *tokens, char **valuep)
47{
48	int cnt;
49	char *suboptarg;
50	char *p;
51
52	suboptarg = *valuep = NULL;
53
54	if (!optionp || !*optionp)
55		return(-1);
56
57	/* skip leading white-space, commas */
58	for (p = *optionp; *p && (*p == ',' || *p == ' ' || *p == '\t'); ++p);
59
60	if (!*p) {
61		*optionp = p;
62		return(-1);
63	}
64
65	/* save the start of the token, and skip the rest of the token. */
66	for (suboptarg = p;
67	    *++p && *p != ',' && *p != '=' && *p != ' ' && *p != '\t';);
68
69	if (*p) {
70		/*
71		 * If there's an equals sign, set the value pointer, and
72		 * skip over the value part of the token.  Terminate the
73		 * token.
74		 */
75		if (*p == '=') {
76			*p = '\0';
77			for (*valuep = ++p;
78			    *p && *p != ',' && *p != ' ' && *p != '\t'; ++p);
79			if (*p)
80				*p++ = '\0';
81		} else
82			*p++ = '\0';
83		/* Skip any whitespace or commas after this token. */
84		for (; *p && (*p == ',' || *p == ' ' || *p == '\t'); ++p);
85	}
86
87	/* set optionp for next round. */
88	*optionp = p;
89
90	for (cnt = 0; *tokens; ++tokens, ++cnt)
91		if (!strcmp(suboptarg, *tokens))
92			return(cnt);
93	return(-1);
94}
95
96#endif
97