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 #include "lint.h" 31 #include <string.h> 32 #include <stddef.h> 33 #include <sys/types.h> 34 35 /* 36 * uses strpbrk and strspn to break string into tokens on 37 * sequentially subsequent calls. returns NULL when no 38 * non-separator characters remain. 39 * `subsequent' calls are calls with first argument NULL. 40 */ 41 char * 42 strtok_r(char *string, const char *sepset, char **lasts) 43 { 44 char *q, *r; 45 46 /* first or subsequent call */ 47 if (string == NULL) 48 string = *lasts; 49 50 if (string == NULL) /* return if no tokens remaining */ 51 return (NULL); 52 53 q = string + strspn(string, sepset); /* skip leading separators */ 54 55 if (*q == '\0') /* return if no tokens remaining */ 56 return (NULL); 57 58 if ((r = strpbrk(q, sepset)) == NULL) /* move past token */ 59 *lasts = NULL; /* indicate this is last token */ 60 else { 61 *r = '\0'; 62 *lasts = r + 1; 63 } 64 return (q); 65 } 66