Annotation of mandoc/compat_strsep.c, Revision 1.3
1.1 schwarze 1: #include "config.h"
2:
1.3 ! schwarze 3: #if HAVE_STRSEP
1.1 schwarze 4:
5: int dummy;
6:
7: #else
8:
9: /* ($)OpenBSD: strsep.c,v 1.6 2005/08/08 08:05:37 espie Exp $ */
10:
11: /*-
12: * Copyright (c) 1990, 1993
13: * The Regents of the University of California. All rights reserved.
14: *
15: * Redistribution and use in source and binary forms, with or without
16: * modification, are permitted provided that the following conditions
17: * are met:
18: * 1. Redistributions of source code must retain the above copyright
19: * notice, this list of conditions and the following disclaimer.
20: * 2. Redistributions in binary form must reproduce the above copyright
21: * notice, this list of conditions and the following disclaimer in the
22: * documentation and/or other materials provided with the distribution.
23: * 3. Neither the name of the University nor the names of its contributors
24: * may be used to endorse or promote products derived from this software
25: * without specific prior written permission.
26: *
27: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
28: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
29: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
30: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
31: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
32: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
33: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
34: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
35: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
36: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37: * SUCH DAMAGE.
38: */
39:
40: /*
41: * Get next token from string *stringp, where tokens are possibly-empty
42: * strings separated by characters from delim.
43: *
44: * Writes NULs into the string at *stringp to end tokens.
45: * delim need not remain constant from call to call.
46: * On return, *stringp points past the last NUL written (if there might
47: * be further tokens), or is NULL (if there are definitely no more tokens).
48: *
49: * If *stringp is NULL, strsep returns NULL.
50: */
51: char *
52: strsep(char **stringp, const char *delim)
53: {
54: char *s;
55: const char *spanp;
56: int c, sc;
57: char *tok;
58:
59: if ((s = *stringp) == NULL)
60: return (NULL);
61: for (tok = s;;) {
62: c = *s++;
63: spanp = delim;
64: do {
65: if ((sc = *spanp++) == c) {
66: if (c == 0)
67: s = NULL;
68: else
69: s[-1] = 0;
70: *stringp = s;
71: return (tok);
72: }
73: } while (sc != 0);
74: }
75: /* NOTREACHED */
76: }
77:
78: #endif
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