/crypto/heimdal/lib/roken/strlcpy.c

 1/*
 2 * Copyright (c) 1995-2002 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#include "roken.h"
36
37#ifndef HAVE_STRLCPY
38
39#if defined(_MSC_VER) && _MSC_VER >= 1400
40
41ROKEN_LIB_FUNCTION size_t ROKEN_LIB_CALL
42strlcpy (char *dst, const char *src, size_t dst_cch)
43{
44    errno_t e;
45
46    if (dst_cch > 0)
47        e = strncpy_s(dst, dst_cch, src, _TRUNCATE);
48
49    return strlen (src);
50}
51
52#else
53
54ROKEN_LIB_FUNCTION size_t ROKEN_LIB_CALL
55strlcpy (char *dst, const char *src, size_t dst_sz)
56{
57    size_t n;
58
59    for (n = 0; n < dst_sz; n++) {
60	if ((*dst++ = *src++) == '\0')
61	    break;
62    }
63
64    if (n < dst_sz)
65	return n;
66    if (n > 0)
67	*(dst - 1) = '\0';
68    return n + strlen (src);
69}
70
71#endif
72
73#endif