1*0Sstevel@tonic-gate /*
2*0Sstevel@tonic-gate * CDDL HEADER START
3*0Sstevel@tonic-gate *
4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the
5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only
6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance
7*0Sstevel@tonic-gate * with the License.
8*0Sstevel@tonic-gate *
9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
11*0Sstevel@tonic-gate * See the License for the specific language governing permissions
12*0Sstevel@tonic-gate * and limitations under the License.
13*0Sstevel@tonic-gate *
14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
19*0Sstevel@tonic-gate *
20*0Sstevel@tonic-gate * CDDL HEADER END
21*0Sstevel@tonic-gate */
22*0Sstevel@tonic-gate /* Copyright (c) 1984 AT&T */
23*0Sstevel@tonic-gate /* All Rights Reserved */
24*0Sstevel@tonic-gate
25*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" /* from S5R2 1.2 */
26*0Sstevel@tonic-gate
27*0Sstevel@tonic-gate /*LINTLIBRARY*/
28*0Sstevel@tonic-gate /*
29*0Sstevel@tonic-gate * uses strpbrk and strspn to break string into tokens on
30*0Sstevel@tonic-gate * sequentially subsequent calls. returns NULL when no
31*0Sstevel@tonic-gate * non-separator characters remain.
32*0Sstevel@tonic-gate * `subsequent' calls are calls with first argument NULL.
33*0Sstevel@tonic-gate */
34*0Sstevel@tonic-gate
35*0Sstevel@tonic-gate #define NULL (char*)0
36*0Sstevel@tonic-gate
37*0Sstevel@tonic-gate extern int strspn();
38*0Sstevel@tonic-gate extern char *strpbrk();
39*0Sstevel@tonic-gate
40*0Sstevel@tonic-gate char *
strtok(string,sepset)41*0Sstevel@tonic-gate strtok(string, sepset)
42*0Sstevel@tonic-gate char *string, *sepset;
43*0Sstevel@tonic-gate {
44*0Sstevel@tonic-gate register char *p, *q, *r;
45*0Sstevel@tonic-gate static char *savept;
46*0Sstevel@tonic-gate
47*0Sstevel@tonic-gate /*first or subsequent call*/
48*0Sstevel@tonic-gate p = (string == NULL)? savept: string;
49*0Sstevel@tonic-gate
50*0Sstevel@tonic-gate if(p == 0) /* return if no tokens remaining */
51*0Sstevel@tonic-gate return(NULL);
52*0Sstevel@tonic-gate
53*0Sstevel@tonic-gate q = p + strspn(p, sepset); /* skip leading separators */
54*0Sstevel@tonic-gate
55*0Sstevel@tonic-gate if(*q == '\0') /* return if no tokens remaining */
56*0Sstevel@tonic-gate return(NULL);
57*0Sstevel@tonic-gate
58*0Sstevel@tonic-gate if((r = strpbrk(q, sepset)) == NULL) /* move past token */
59*0Sstevel@tonic-gate savept = 0; /* indicate this is last token */
60*0Sstevel@tonic-gate else {
61*0Sstevel@tonic-gate *r = '\0';
62*0Sstevel@tonic-gate savept = ++r;
63*0Sstevel@tonic-gate }
64*0Sstevel@tonic-gate return(q);
65*0Sstevel@tonic-gate }
66