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 * 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