1*05b00f60SXin Li /*-
2*05b00f60SXin Li * Copyright (c) 1990, 1993
3*05b00f60SXin Li * The Regents of the University of California. All rights reserved.
4*05b00f60SXin Li *
5*05b00f60SXin Li * Redistribution and use in source and binary forms, with or without
6*05b00f60SXin Li * modification, are permitted provided that the following conditions
7*05b00f60SXin Li * are met:
8*05b00f60SXin Li * 1. Redistributions of source code must retain the above copyright
9*05b00f60SXin Li * notice, this list of conditions and the following disclaimer.
10*05b00f60SXin Li * 2. Redistributions in binary form must reproduce the above copyright
11*05b00f60SXin Li * notice, this list of conditions and the following disclaimer in the
12*05b00f60SXin Li * documentation and/or other materials provided with the distribution.
13*05b00f60SXin Li * 3. All advertising materials mentioning features or use of this software
14*05b00f60SXin Li * must display the following acknowledgement:
15*05b00f60SXin Li * This product includes software developed by the University of
16*05b00f60SXin Li * California, Berkeley and its contributors.
17*05b00f60SXin Li * 4. Neither the name of the University nor the names of its contributors
18*05b00f60SXin Li * may be used to endorse or promote products derived from this software
19*05b00f60SXin Li * without specific prior written permission.
20*05b00f60SXin Li *
21*05b00f60SXin Li * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22*05b00f60SXin Li * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23*05b00f60SXin Li * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24*05b00f60SXin Li * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25*05b00f60SXin Li * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26*05b00f60SXin Li * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27*05b00f60SXin Li * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28*05b00f60SXin Li * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29*05b00f60SXin Li * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30*05b00f60SXin Li * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31*05b00f60SXin Li * SUCH DAMAGE.
32*05b00f60SXin Li */
33*05b00f60SXin Li
34*05b00f60SXin Li #ifdef HAVE_CONFIG_H
35*05b00f60SXin Li #include <config.h>
36*05b00f60SXin Li #endif
37*05b00f60SXin Li
38*05b00f60SXin Li #include <netdissect-stdinc.h>
39*05b00f60SXin Li
40*05b00f60SXin Li #include <string.h>
41*05b00f60SXin Li
42*05b00f60SXin Li #include "netdissect.h"
43*05b00f60SXin Li
44*05b00f60SXin Li /*
45*05b00f60SXin Li * Get next token from string *stringp, where tokens are possibly-empty
46*05b00f60SXin Li * strings separated by characters from delim.
47*05b00f60SXin Li *
48*05b00f60SXin Li * Writes NULs into the string at *stringp to end tokens.
49*05b00f60SXin Li * delim need not remain constant from call to call.
50*05b00f60SXin Li * On return, *stringp points past the last NUL written (if there might
51*05b00f60SXin Li * be further tokens), or is NULL (if there are definitely no more tokens).
52*05b00f60SXin Li *
53*05b00f60SXin Li * If *stringp is NULL, strsep returns NULL.
54*05b00f60SXin Li */
55*05b00f60SXin Li char *
strsep(char ** stringp,const char * delim)56*05b00f60SXin Li strsep(char **stringp, const char *delim)
57*05b00f60SXin Li {
58*05b00f60SXin Li char *s;
59*05b00f60SXin Li const char *spanp;
60*05b00f60SXin Li int c, sc;
61*05b00f60SXin Li char *tok;
62*05b00f60SXin Li
63*05b00f60SXin Li if ((s = *stringp) == NULL)
64*05b00f60SXin Li return (NULL);
65*05b00f60SXin Li for (tok = s;;) {
66*05b00f60SXin Li c = *s++;
67*05b00f60SXin Li spanp = delim;
68*05b00f60SXin Li do {
69*05b00f60SXin Li if ((sc = *spanp++) == c) {
70*05b00f60SXin Li if (c == 0)
71*05b00f60SXin Li s = NULL;
72*05b00f60SXin Li else
73*05b00f60SXin Li s[-1] = 0;
74*05b00f60SXin Li *stringp = s;
75*05b00f60SXin Li return (tok);
76*05b00f60SXin Li }
77*05b00f60SXin Li } while (sc != 0);
78*05b00f60SXin Li }
79*05b00f60SXin Li /* NOTREACHED */
80*05b00f60SXin Li }
81