/*-

 * Copyright (c)1999 Citrus Project,

 * 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.

 *

 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.

 *

 *	citrus Id: wcscat.c,v 1.1 1999/12/29 21:47:45 tshiozak Exp

 */

#include <sys/cdefs.h>

#if defined(LIBC_SCCS) && !defined(lint)

__RCSID("$NetBSD: wcscat.c,v 1.1 2000/12/23 23:14:36 itojun Exp $");

#endif /* LIBC_SCCS and not lint */

__FBSDID("$FreeBSD: src/lib/libc/string/wcscat.c,v 1.8 2002/09/26 09:28:55 tjr Exp $");

#include <wchar.h>

EXPORT_C wchar_t *

wcscat(s1, s2)

	wchar_t * __restrict s1;

	const wchar_t * __restrict s2;

{

	wchar_t *cp;

	cp = s1;

	while (*cp != L'\0')

		cp++;

	while ((*cp++ = *s2++) != L'\0')

		;

	return (s1);

}

/*

 * 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.

 */

EXPORT_C 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 != L'\0' && n-- != 0)

		d++;

	dlen = d - dst;

	n = siz - dlen;

	if (n == 0)

		return(dlen + wcslen(s));

	while (*s != L'\0') {

		if (n != 1) {

			*d++ = *s;

			n--;

		}

		s++;

	}

	*d = L'\0';

	return(dlen + (s - src));	/* count does not include NUL */

}