1/*	$NetBSD: strsep_copy.c,v 1.1.1.1 2011/04/13 18:15:43 elric Exp $	*/
2
3/*
4 * Copyright (c) 2000, 2002 Kungliga Tekniska Högskolan
5 * (Royal Institute of Technology, Stockholm, Sweden).
6 * 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 *
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 *
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 *
19 * 3. Neither the name of the Institute nor the names of its contributors
20 *    may be used to endorse or promote products derived from this software
21 *    without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 */
35
36#include <config.h>
37
38#include <string.h>
39
40#include <krb5/roken.h>
41
42#ifndef HAVE_STRSEP_COPY
43
44/* strsep, but with const stringp, so return string in buf */
45
46ROKEN_LIB_FUNCTION ssize_t ROKEN_LIB_CALL
47strsep_copy(const char **stringp, const char *delim, char *buf, size_t len)
48{
49    const char *save = *stringp;
50    size_t l;
51    if(save == NULL)
52	return -1;
53    *stringp = *stringp + strcspn(*stringp, delim);
54    l = min(len, *stringp - save);
55    if(len > 0) {
56	memcpy(buf, save, l);
57	buf[l] = '\0';
58    }
59
60    l = *stringp - save;
61    if(**stringp == '\0')
62	*stringp = NULL;
63    else
64	(*stringp)++;
65    return l;
66}
67
68#endif
69