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 /*
31 * getsubopt - parse suboptions from a flag argument.
32 */
33 #pragma weak _getsubopt = getsubopt
34
35 #include "lint.h"
36 #include <sys/types.h>
37 #include <string.h>
38 #include <stdlib.h>
39 #include <stdio.h>
40
41 int
getsubopt(char ** optionsp,char * const * tokens,char ** valuep)42 getsubopt(char **optionsp, char * const *tokens, char **valuep)
43 {
44 char *s = *optionsp, *p;
45 int i;
46 size_t optlen;
47
48 *valuep = NULL;
49 if (*s == '\0')
50 return (-1);
51 p = strchr(s, ','); /* find next option */
52 if (p == NULL) {
53 p = s + strlen(s);
54 } else {
55 *p++ = '\0'; /* mark end and point to next */
56 }
57 *optionsp = p; /* point to next option */
58 p = strchr(s, '='); /* find value */
59 if (p == NULL) {
60 optlen = strlen(s);
61 *valuep = NULL;
62 } else {
63 optlen = p - s;
64 *valuep = ++p;
65 }
66 for (i = 0; tokens[i] != NULL; i++) {
67 if ((optlen == strlen(tokens[i])) &&
68 (strncmp(s, tokens[i], optlen) == 0))
69 return (i);
70 }
71 /* no match, point value at option and return error */
72 *valuep = s;
73 return (-1);
74 }
75