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 /*
24 * Copyright 2005 Sun Microsystems, Inc. All rights reserved.
25 * Use is subject to license terms.
26 */
27
28 /* Copyright (c) 1988 AT&T */
29 /* All Rights Reserved */
30
31
32 #pragma ident "%Z%%M% %I% %E% SMI"
33
34 /*
35 * This is exactly strtok(3C).
36 * It is here, with a different name, because using strtok() within
37 * the scope of errverb() can cause the loss of a currently remembered
38 * string(savept).
39 */
40
41 /*
42 * uses strpbrk and strspn to break string into tokens on
43 * sequentially subsequent calls. returns NULL when no
44 * non-separator characters remain.
45 * `subsequent' calls are calls with first argument NULL.
46 */
47
48 #include <string.h>
49
50 char *
errstrtok(char * string,char * sepset)51 errstrtok(char *string, char *sepset)
52 {
53 char *p, *q, *r;
54 static char *savept;
55
56 /* first or subsequent call */
57 p = (string == NULL)? savept: string;
58
59 if (p == 0) /* return if no tokens remaining */
60 return (NULL);
61
62 q = p + strspn(p, sepset); /* skip leading separators */
63
64 if (*q == '\0') /* return if no tokens remaining */
65 return (NULL);
66
67 if ((r = strpbrk(q, sepset)) == NULL) /* move past token */
68 savept = 0; /* indicate this is last token */
69 else {
70 *r = '\0';
71 savept = ++r;
72 }
73 return (q);
74 }
75