1*4a5d661aSToomas Soome /*- 2*4a5d661aSToomas Soome * Copyright (c) 1990, 1993 3*4a5d661aSToomas Soome * The Regents of the University of California. All rights reserved. 4*4a5d661aSToomas Soome * 5*4a5d661aSToomas Soome * Redistribution and use in source and binary forms, with or without 6*4a5d661aSToomas Soome * modification, are permitted provided that the following conditions 7*4a5d661aSToomas Soome * are met: 8*4a5d661aSToomas Soome * 1. Redistributions of source code must retain the above copyright 9*4a5d661aSToomas Soome * notice, this list of conditions and the following disclaimer. 10*4a5d661aSToomas Soome * 2. Redistributions in binary form must reproduce the above copyright 11*4a5d661aSToomas Soome * notice, this list of conditions and the following disclaimer in the 12*4a5d661aSToomas Soome * documentation and/or other materials provided with the distribution. 13*4a5d661aSToomas Soome * 3. Neither the name of the University nor the names of its contributors 14*4a5d661aSToomas Soome * may be used to endorse or promote products derived from this software 15*4a5d661aSToomas Soome * without specific prior written permission. 16*4a5d661aSToomas Soome * 17*4a5d661aSToomas Soome * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18*4a5d661aSToomas Soome * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19*4a5d661aSToomas Soome * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20*4a5d661aSToomas Soome * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21*4a5d661aSToomas Soome * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22*4a5d661aSToomas Soome * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23*4a5d661aSToomas Soome * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24*4a5d661aSToomas Soome * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25*4a5d661aSToomas Soome * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26*4a5d661aSToomas Soome * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27*4a5d661aSToomas Soome * SUCH DAMAGE. 28*4a5d661aSToomas Soome */ 29*4a5d661aSToomas Soome 30*4a5d661aSToomas Soome #if defined(LIBC_SCCS) && !defined(lint) 31*4a5d661aSToomas Soome static char sccsid[] = "@(#)strsep.c 8.1 (Berkeley) 6/4/93"; 32*4a5d661aSToomas Soome #endif /* LIBC_SCCS and not lint */ 33*4a5d661aSToomas Soome #include <sys/cdefs.h> 34*4a5d661aSToomas Soome __FBSDID("$FreeBSD$"); 35*4a5d661aSToomas Soome 36*4a5d661aSToomas Soome #include <string.h> 37*4a5d661aSToomas Soome #include <stdio.h> 38*4a5d661aSToomas Soome 39*4a5d661aSToomas Soome /* 40*4a5d661aSToomas Soome * Get next token from string *stringp, where tokens are possibly-empty 41*4a5d661aSToomas Soome * strings separated by characters from delim. 42*4a5d661aSToomas Soome * 43*4a5d661aSToomas Soome * Writes NULs into the string at *stringp to end tokens. 44*4a5d661aSToomas Soome * delim need not remain constant from call to call. 45*4a5d661aSToomas Soome * On return, *stringp points past the last NUL written (if there might 46*4a5d661aSToomas Soome * be further tokens), or is NULL (if there are definitely no more tokens). 47*4a5d661aSToomas Soome * 48*4a5d661aSToomas Soome * If *stringp is NULL, strsep returns NULL. 49*4a5d661aSToomas Soome */ 50*4a5d661aSToomas Soome char * 51*4a5d661aSToomas Soome strsep(char **stringp, const char *delim) 52*4a5d661aSToomas Soome { 53*4a5d661aSToomas Soome char *s; 54*4a5d661aSToomas Soome const char *spanp; 55*4a5d661aSToomas Soome int c, sc; 56*4a5d661aSToomas Soome char *tok; 57*4a5d661aSToomas Soome 58*4a5d661aSToomas Soome if ((s = *stringp) == NULL) 59*4a5d661aSToomas Soome return (NULL); 60*4a5d661aSToomas Soome for (tok = s;;) { 61*4a5d661aSToomas Soome c = *s++; 62*4a5d661aSToomas Soome spanp = delim; 63*4a5d661aSToomas Soome do { 64*4a5d661aSToomas Soome if ((sc = *spanp++) == c) { 65*4a5d661aSToomas Soome if (c == 0) 66*4a5d661aSToomas Soome s = NULL; 67*4a5d661aSToomas Soome else 68*4a5d661aSToomas Soome s[-1] = 0; 69*4a5d661aSToomas Soome *stringp = s; 70*4a5d661aSToomas Soome return (tok); 71*4a5d661aSToomas Soome } 72*4a5d661aSToomas Soome } while (sc != 0); 73*4a5d661aSToomas Soome } 74*4a5d661aSToomas Soome /* NOTREACHED */ 75*4a5d661aSToomas Soome } 76