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 * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 /* Copyright (c) 1988 AT&T */ 30 /* All Rights Reserved */ 31 32 33 #pragma weak strtok_r = _strtok_r 34 35 #include "synonyms.h" 36 #include <string.h> 37 #include <stddef.h> 38 #include <sys/types.h> 39 40 /* 41 * uses strpbrk and strspn to break string into tokens on 42 * sequentially subsequent calls. returns NULL when no 43 * non-separator characters remain. 44 * `subsequent' calls are calls with first argument NULL. 45 */ 46 char * 47 strtok_r(char *string, const char *sepset, char **lasts) 48 { 49 char *q, *r; 50 51 /* first or subsequent call */ 52 if (string == NULL) 53 string = *lasts; 54 55 if (string == NULL) /* return if no tokens remaining */ 56 return (NULL); 57 58 q = string + strspn(string, sepset); /* skip leading separators */ 59 60 if (*q == '\0') /* return if no tokens remaining */ 61 return (NULL); 62 63 if ((r = strpbrk(q, sepset)) == NULL) /* move past token */ 64 *lasts = NULL; /* indicate this is last token */ 65 else { 66 *r = '\0'; 67 *lasts = r + 1; 68 } 69 return (q); 70 } 71