78 lines
2.5 KiB
C
78 lines
2.5 KiB
C
/*
|
|
* Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
|
|
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
|
|
* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
|
|
* THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
|
|
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
|
|
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
|
|
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
|
|
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
|
|
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
|
|
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
* from OpenBSD: strlcat.c,v 1.3 2000/11/24 11:10:02 itojun Exp
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
#if 0
|
|
#if defined(LIBC_SCCS) && !defined(lint)
|
|
__RCSID("$NetBSD: wcslcat.c,v 1.1 2000/12/23 23:14:36 itojun Exp $");
|
|
#endif /* LIBC_SCCS and not lint */
|
|
#endif
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <sys/types.h>
|
|
#include <wchar.h>
|
|
|
|
/*
|
|
* Appends src to string dst of size siz (unlike wcsncat, siz is the
|
|
* full size of dst, not space left). At most siz-1 characters
|
|
* will be copied. Always NUL terminates (unless siz == 0).
|
|
* Returns wcslen(initial dst) + wcslen(src); if retval >= siz,
|
|
* truncation occurred.
|
|
*/
|
|
size_t
|
|
wcslcat(dst, src, siz)
|
|
wchar_t *dst;
|
|
const wchar_t *src;
|
|
size_t siz;
|
|
{
|
|
wchar_t *d = dst;
|
|
const wchar_t *s = src;
|
|
size_t n = siz;
|
|
size_t dlen;
|
|
|
|
/* Find the end of dst and adjust bytes left but don't go past end */
|
|
while (*d != '\0' && n-- != 0)
|
|
d++;
|
|
dlen = d - dst;
|
|
n = siz - dlen;
|
|
|
|
if (n == 0)
|
|
return(dlen + wcslen(s));
|
|
while (*s != '\0') {
|
|
if (n != 1) {
|
|
*d++ = *s;
|
|
n--;
|
|
}
|
|
s++;
|
|
}
|
|
*d = '\0';
|
|
|
|
return(dlen + (s - src)); /* count does not include NUL */
|
|
}
|