libpcap  1.10.1
About: libpcap is a packet filter library used by tools like tcpdump.
  Fossies Dox: libpcap-1.10.1.tar.gz  ("unofficial" and yet experimental doxygen-generated source code documentation)  

strtok_r.c
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1 /*-
2  * Copyright (c) 1998 Softweyr LLC. All rights reserved.
3  *
4  * strtok_r, from Berkeley strtok
5  * Oct 13, 1998 by Wes Peters <wes@softweyr.com>
6  *
7  * Copyright (c) 1988, 1993
8  * The Regents of the University of California. All rights reserved.
9  *
10  * Redistribution and use in source and binary forms, with or without
11  * modification, are permitted provided that the following conditions
12  * are met:
13  * 1. Redistributions of source code must retain the above copyright
14  * notices, this list of conditions and the following disclaimer.
15  * 2. Redistributions in binary form must reproduce the above copyright
16  * notices, this list of conditions and the following disclaimer in the
17  * documentation and/or other materials provided with the distribution.
18  * 3. Neither the name of the University nor the names of its contributors
19  * may be used to endorse or promote products derived from this software
20  * without specific prior written permission.
21  *
22  * THIS SOFTWARE IS PROVIDED BY SOFTWEYR LLC, THE REGENTS AND CONTRIBUTORS
23  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
24  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
25  * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL SOFTWEYR LLC, THE
26  * REGENTS, OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
27  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
28  * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
29  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
30  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
31  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
32  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33  *
34  * From: @(#)strtok.c 8.1 (Berkeley) 6/4/93
35  */
36 
37 #ifdef HAVE_CONFIG_H
38 #include <config.h>
39 #endif
40 
41 #include "portability.h"
42 
43 char *
44 pcap_strtok_r(char *s, const char *delim, char **last)
45 {
46  char *spanp, *tok;
47  int c, sc;
48 
49  if (s == NULL && (s = *last) == NULL)
50  return (NULL);
51 
52  /*
53  * Skip (span) leading delimiters (s += strspn(s, delim), sort of).
54  */
55 cont:
56  c = *s++;
57  for (spanp = (char *)delim; (sc = *spanp++) != 0;) {
58  if (c == sc)
59  goto cont;
60  }
61 
62  if (c == 0) { /* no non-delimiter characters */
63  *last = NULL;
64  return (NULL);
65  }
66  tok = s - 1;
67 
68  /*
69  * Scan token (scan for delimiters: s += strcspn(s, delim), sort of).
70  * Note that delim must have one NUL; we stop if we see that, too.
71  */
72  for (;;) {
73  c = *s++;
74  spanp = (char *)delim;
75  do {
76  if ((sc = *spanp++) == c) {
77  if (c == 0)
78  s = NULL;
79  else
80  s[-1] = '\0';
81  *last = s;
82  return (tok);
83  }
84  } while (sc != 0);
85  }
86  /* NOTREACHED */
87 }
char * pcap_strtok_r(char *s, const char *delim, char **last)
Definition: strtok_r.c:44