Annotation of mandoc/compat_strsep.c, Revision 1.5
1.5 ! schwarze 1: /* $Id: compat_strsep.c,v 1.4 2014/12/11 09:05:01 schwarze Exp $ */
! 2: /* $OpenBSD: strsep.c,v 1.8 2015/08/31 02:53:57 guenther Exp $ */
1.1 schwarze 3:
4: /*-
5: * Copyright (c) 1990, 1993
6: * The Regents of the University of California. All rights reserved.
7: *
8: * Redistribution and use in source and binary forms, with or without
9: * modification, are permitted provided that the following conditions
10: * are met:
11: * 1. Redistributions of source code must retain the above copyright
12: * notice, this list of conditions and the following disclaimer.
13: * 2. Redistributions in binary form must reproduce the above copyright
14: * notice, this list of conditions and the following disclaimer in the
15: * documentation and/or other materials provided with the distribution.
16: * 3. Neither the name of the University nor the names of its contributors
17: * may be used to endorse or promote products derived from this software
18: * without specific prior written permission.
19: *
20: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30: * SUCH DAMAGE.
31: */
1.5 ! schwarze 32: #include "config.h"
1.1 schwarze 33:
34: /*
35: * Get next token from string *stringp, where tokens are possibly-empty
36: * strings separated by characters from delim.
37: *
38: * Writes NULs into the string at *stringp to end tokens.
39: * delim need not remain constant from call to call.
40: * On return, *stringp points past the last NUL written (if there might
41: * be further tokens), or is NULL (if there are definitely no more tokens).
42: *
43: * If *stringp is NULL, strsep returns NULL.
44: */
45: char *
46: strsep(char **stringp, const char *delim)
47: {
48: char *s;
49: const char *spanp;
50: int c, sc;
51: char *tok;
52:
53: if ((s = *stringp) == NULL)
54: return (NULL);
55: for (tok = s;;) {
56: c = *s++;
57: spanp = delim;
58: do {
59: if ((sc = *spanp++) == c) {
60: if (c == 0)
61: s = NULL;
62: else
63: s[-1] = 0;
64: *stringp = s;
65: return (tok);
66: }
67: } while (sc != 0);
68: }
69: /* NOTREACHED */
70: }
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