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 (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22 /*
23 * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 /* Copyright (c) 1988 AT&T */
28 /* All Rights Reserved */
29
30 #pragma ident "%Z%%M% %I% %E% SMI"
31
32 /*
33 * getsubopt - parse suboptions from a flag argument.
34 */
35 #pragma weak _getsubopt = getsubopt
36
37 #include "lint.h"
38 #include <sys/types.h>
39 #include <string.h>
40 #include <stdlib.h>
41 #include <stdio.h>
42
43 int
getsubopt(char ** optionsp,char * const * tokens,char ** valuep)44 getsubopt(char **optionsp, char * const *tokens, char **valuep)
45 {
46 char *s = *optionsp, *p;
47 int i;
48 size_t optlen;
49
50 *valuep = NULL;
51 if (*s == '\0')
52 return (-1);
53 p = strchr(s, ','); /* find next option */
54 if (p == NULL) {
55 p = s + strlen(s);
56 } else {
57 *p++ = '\0'; /* mark end and point to next */
58 }
59 *optionsp = p; /* point to next option */
60 p = strchr(s, '='); /* find value */
61 if (p == NULL) {
62 optlen = strlen(s);
63 *valuep = NULL;
64 } else {
65 optlen = p - s;
66 *valuep = ++p;
67 }
68 for (i = 0; tokens[i] != NULL; i++) {
69 if ((optlen == strlen(tokens[i])) &&
70 (strncmp(s, tokens[i], optlen) == 0))
71 return (i);
72 }
73 /* no match, point value at option and return error */
74 *valuep = s;
75 return (-1);
76 }
77