1*19c3b8c2SApple OSS Distributions /*-
2*19c3b8c2SApple OSS Distributions * Copyright (c) 1990, 1993
3*19c3b8c2SApple OSS Distributions * The Regents of the University of California. All rights reserved.
4*19c3b8c2SApple OSS Distributions *
5*19c3b8c2SApple OSS Distributions * Redistribution and use in source and binary forms, with or without
6*19c3b8c2SApple OSS Distributions * modification, are permitted provided that the following conditions
7*19c3b8c2SApple OSS Distributions * are met:
8*19c3b8c2SApple OSS Distributions * 1. Redistributions of source code must retain the above copyright
9*19c3b8c2SApple OSS Distributions * notice, this list of conditions and the following disclaimer.
10*19c3b8c2SApple OSS Distributions * 2. Redistributions in binary form must reproduce the above copyright
11*19c3b8c2SApple OSS Distributions * notice, this list of conditions and the following disclaimer in the
12*19c3b8c2SApple OSS Distributions * documentation and/or other materials provided with the distribution.
13*19c3b8c2SApple OSS Distributions * 4. Neither the name of the University nor the names of its contributors
14*19c3b8c2SApple OSS Distributions * may be used to endorse or promote products derived from this software
15*19c3b8c2SApple OSS Distributions * without specific prior written permission.
16*19c3b8c2SApple OSS Distributions *
17*19c3b8c2SApple OSS Distributions * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18*19c3b8c2SApple OSS Distributions * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19*19c3b8c2SApple OSS Distributions * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20*19c3b8c2SApple OSS Distributions * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21*19c3b8c2SApple OSS Distributions * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22*19c3b8c2SApple OSS Distributions * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23*19c3b8c2SApple OSS Distributions * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24*19c3b8c2SApple OSS Distributions * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25*19c3b8c2SApple OSS Distributions * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26*19c3b8c2SApple OSS Distributions * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27*19c3b8c2SApple OSS Distributions * SUCH DAMAGE.
28*19c3b8c2SApple OSS Distributions */
29*19c3b8c2SApple OSS Distributions
30*19c3b8c2SApple OSS Distributions #include "string.h"
31*19c3b8c2SApple OSS Distributions
32*19c3b8c2SApple OSS Distributions /*
33*19c3b8c2SApple OSS Distributions * Get next token from string *stringp, where tokens are possibly-empty
34*19c3b8c2SApple OSS Distributions * strings separated by characters from delim.
35*19c3b8c2SApple OSS Distributions *
36*19c3b8c2SApple OSS Distributions * Writes NULs into the string at *stringp to end tokens.
37*19c3b8c2SApple OSS Distributions * delim need not remain constant from call to call.
38*19c3b8c2SApple OSS Distributions * On return, *stringp points past the last NUL written (if there might
39*19c3b8c2SApple OSS Distributions * be further tokens), or is NULL (if there are definitely no more tokens).
40*19c3b8c2SApple OSS Distributions *
41*19c3b8c2SApple OSS Distributions * If *stringp is NULL, strsep returns NULL.
42*19c3b8c2SApple OSS Distributions */
43*19c3b8c2SApple OSS Distributions __attribute__((visibility("hidden")))
44*19c3b8c2SApple OSS Distributions char *
strsep(char ** stringp,const char * delim)45*19c3b8c2SApple OSS Distributions strsep(char **stringp, const char *delim)
46*19c3b8c2SApple OSS Distributions {
47*19c3b8c2SApple OSS Distributions char *s;
48*19c3b8c2SApple OSS Distributions const char *spanp;
49*19c3b8c2SApple OSS Distributions int c, sc;
50*19c3b8c2SApple OSS Distributions char *tok;
51*19c3b8c2SApple OSS Distributions
52*19c3b8c2SApple OSS Distributions if ((s = *stringp) == NULL) {
53*19c3b8c2SApple OSS Distributions return NULL;
54*19c3b8c2SApple OSS Distributions }
55*19c3b8c2SApple OSS Distributions for (tok = s;;) {
56*19c3b8c2SApple OSS Distributions c = *s++;
57*19c3b8c2SApple OSS Distributions spanp = delim;
58*19c3b8c2SApple OSS Distributions do {
59*19c3b8c2SApple OSS Distributions if ((sc = *spanp++) == c) {
60*19c3b8c2SApple OSS Distributions if (c == 0) {
61*19c3b8c2SApple OSS Distributions s = NULL;
62*19c3b8c2SApple OSS Distributions } else {
63*19c3b8c2SApple OSS Distributions s[-1] = 0;
64*19c3b8c2SApple OSS Distributions }
65*19c3b8c2SApple OSS Distributions *stringp = s;
66*19c3b8c2SApple OSS Distributions return tok;
67*19c3b8c2SApple OSS Distributions }
68*19c3b8c2SApple OSS Distributions } while (sc != 0);
69*19c3b8c2SApple OSS Distributions }
70*19c3b8c2SApple OSS Distributions /* NOTREACHED */
71*19c3b8c2SApple OSS Distributions }
72