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/crypto/heimdal/lib/roken/strsep_copy.c

https://bitbucket.org/freebsd/freebsd-head/
C | 66 lines | 25 code | 8 blank | 33 comment | 5 complexity | 781e894f3f2340f3b3b79e701c894b36 MD5 | raw file
 1/*
 2 * Copyright (c) 2000, 2002 Kungliga Tekniska Hรถgskolan
 3 * (Royal Institute of Technology, Stockholm, Sweden).
 4 * All rights reserved.
 5 *
 6 * Redistribution and use in source and binary forms, with or without
 7 * modification, are permitted provided that the following conditions
 8 * are met:
 9 *
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 *
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 *
17 * 3. Neither the name of the Institute nor the names of its contributors
18 *    may be used to endorse or promote products derived from this software
19 *    without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34#include <config.h>
35
36#include <string.h>
37
38#include "roken.h"
39
40#ifndef HAVE_STRSEP_COPY
41
42/* strsep, but with const stringp, so return string in buf */
43
44ROKEN_LIB_FUNCTION ssize_t ROKEN_LIB_CALL
45strsep_copy(const char **stringp, const char *delim, char *buf, size_t len)
46{
47    const char *save = *stringp;
48    size_t l;
49    if(save == NULL)
50	return -1;
51    *stringp = *stringp + strcspn(*stringp, delim);
52    l = min(len, (size_t)(*stringp - save));
53    if(len > 0) {
54	memcpy(buf, save, l);
55	buf[l] = '\0';
56    }
57
58    l = *stringp - save;
59    if(**stringp == '\0')
60	*stringp = NULL;
61    else
62	(*stringp)++;
63    return l;
64}
65
66#endif