1*0Sstevel@tonic-gate /* 2*0Sstevel@tonic-gate * Copyright (c) 1997, by Sun Microsystems, Inc. 3*0Sstevel@tonic-gate * All rights reserved. 4*0Sstevel@tonic-gate */ 5*0Sstevel@tonic-gate 6*0Sstevel@tonic-gate #if defined(LIBC_SCCS) && !defined(lint) 7*0Sstevel@tonic-gate static const char sccsid[] = "strsep.c 8.1 (Berkeley) 6/4/93"; 8*0Sstevel@tonic-gate static const char rcsid[] = "$Id: strsep.c,v 8.5 1996/11/18 09:09:04 vixie Exp $"; 9*0Sstevel@tonic-gate #endif /* LIBC_SCCS and not lint */ 10*0Sstevel@tonic-gate 11*0Sstevel@tonic-gate /* 12*0Sstevel@tonic-gate * Copyright (c) 1990, 1993 13*0Sstevel@tonic-gate * The Regents of the University of California. All rights reserved. 14*0Sstevel@tonic-gate * 15*0Sstevel@tonic-gate * Redistribution and use in source and binary forms, with or without 16*0Sstevel@tonic-gate * modification, are permitted provided that the following conditions 17*0Sstevel@tonic-gate * are met: 18*0Sstevel@tonic-gate * 1. Redistributions of source code must retain the above copyright 19*0Sstevel@tonic-gate * notice, this list of conditions and the following disclaimer. 20*0Sstevel@tonic-gate * 2. Redistributions in binary form must reproduce the above copyright 21*0Sstevel@tonic-gate * notice, this list of conditions and the following disclaimer in the 22*0Sstevel@tonic-gate * documentation and/or other materials provided with the distribution. 23*0Sstevel@tonic-gate * 3. All advertising materials mentioning features or use of this software 24*0Sstevel@tonic-gate * must display the following acknowledgement: 25*0Sstevel@tonic-gate * This product includes software developed by the University of 26*0Sstevel@tonic-gate * California, Berkeley and its contributors. 27*0Sstevel@tonic-gate * 4. Neither the name of the University nor the names of its contributors 28*0Sstevel@tonic-gate * may be used to endorse or promote products derived from this software 29*0Sstevel@tonic-gate * without specific prior written permission. 30*0Sstevel@tonic-gate * 31*0Sstevel@tonic-gate * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 32*0Sstevel@tonic-gate * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 33*0Sstevel@tonic-gate * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 34*0Sstevel@tonic-gate * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 35*0Sstevel@tonic-gate * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 36*0Sstevel@tonic-gate * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 37*0Sstevel@tonic-gate * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 38*0Sstevel@tonic-gate * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 39*0Sstevel@tonic-gate * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 40*0Sstevel@tonic-gate * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 41*0Sstevel@tonic-gate * SUCH DAMAGE. 42*0Sstevel@tonic-gate */ 43*0Sstevel@tonic-gate 44*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 45*0Sstevel@tonic-gate 46*0Sstevel@tonic-gate #include "port_before.h" 47*0Sstevel@tonic-gate #include <sys/cdefs.h> 48*0Sstevel@tonic-gate #include <string.h> 49*0Sstevel@tonic-gate #include <stdio.h> 50*0Sstevel@tonic-gate #include "port_after.h" 51*0Sstevel@tonic-gate 52*0Sstevel@tonic-gate #ifndef NEED_STRSEP 53*0Sstevel@tonic-gate int __strsep_unneeded__; 54*0Sstevel@tonic-gate #else 55*0Sstevel@tonic-gate 56*0Sstevel@tonic-gate /* 57*0Sstevel@tonic-gate * Get next token from string *stringp, where tokens are possibly-empty 58*0Sstevel@tonic-gate * strings separated by characters from delim. 59*0Sstevel@tonic-gate * 60*0Sstevel@tonic-gate * Writes NULs into the string at *stringp to end tokens. 61*0Sstevel@tonic-gate * delim need not remain constant from call to call. 62*0Sstevel@tonic-gate * On return, *stringp points past the last NUL written (if there might 63*0Sstevel@tonic-gate * be further tokens), or is NULL (if there are definitely no more tokens). 64*0Sstevel@tonic-gate * 65*0Sstevel@tonic-gate * If *stringp is NULL, strsep returns NULL. 66*0Sstevel@tonic-gate */ 67*0Sstevel@tonic-gate char * 68*0Sstevel@tonic-gate strsep(char **stringp, const char *delim) { 69*0Sstevel@tonic-gate char *s; 70*0Sstevel@tonic-gate const char *spanp; 71*0Sstevel@tonic-gate int c, sc; 72*0Sstevel@tonic-gate char *tok; 73*0Sstevel@tonic-gate 74*0Sstevel@tonic-gate if ((s = *stringp) == NULL) 75*0Sstevel@tonic-gate return (NULL); 76*0Sstevel@tonic-gate for (tok = s;;) { 77*0Sstevel@tonic-gate c = *s++; 78*0Sstevel@tonic-gate spanp = delim; 79*0Sstevel@tonic-gate do { 80*0Sstevel@tonic-gate if ((sc = *spanp++) == c) { 81*0Sstevel@tonic-gate if (c == 0) 82*0Sstevel@tonic-gate s = NULL; 83*0Sstevel@tonic-gate else 84*0Sstevel@tonic-gate s[-1] = 0; 85*0Sstevel@tonic-gate *stringp = s; 86*0Sstevel@tonic-gate return (tok); 87*0Sstevel@tonic-gate } 88*0Sstevel@tonic-gate } while (sc != 0); 89*0Sstevel@tonic-gate } 90*0Sstevel@tonic-gate /* NOTREACHED */ 91*0Sstevel@tonic-gate } 92*0Sstevel@tonic-gate 93*0Sstevel@tonic-gate #endif /*NEED_STRSEP*/ 94