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 * This is exactly strtok(3C).
33 * It is here, with a different name, because using strtok() within
34 * the scope of errverb() can cause the loss of a currently remembered
35 * string(savept).
36 */
37
38 /*
39 * uses strpbrk and strspn to break string into tokens on
40 * sequentially subsequent calls. returns NULL when no
41 * non-separator characters remain.
42 * `subsequent' calls are calls with first argument NULL.
43 */
44
45 #include <string.h>
46
47 char *
errstrtok(char * string,char * sepset)48 errstrtok(char *string, char *sepset)
49 {
50 char *p, *q, *r;
51 static char *savept;
52
53 /* first or subsequent call */
54 p = (string == NULL)? savept: string;
55
56 if (p == 0) /* return if no tokens remaining */
57 return (NULL);
58
59 q = p + strspn(p, sepset); /* skip leading separators */
60
61 if (*q == '\0') /* return if no tokens remaining */
62 return (NULL);
63
64 if ((r = strpbrk(q, sepset)) == NULL) /* move past token */
65 savept = 0; /* indicate this is last token */
66 else {
67 *r = '\0';
68 savept = ++r;
69 }
70 return (q);
71 }
72