/*	$NetBSD: strlcpy.c,v 1.14 2003/10/27 00:12:42 lukem Exp $	*/

/*	$OpenBSD: strlcpy.c,v 1.7 2003/04/12 21:56:39 millert Exp $	*/

/*

 * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>

 *

 * Permission to use, copy, modify, and distribute this software for any

 * purpose with or without fee is hereby granted, provided that the above

 * copyright notice and this permission notice appear in all copies.

 *

 * THE SOFTWARE IS PROVIDED "AS IS" AND TODD C. MILLER DISCLAIMS ALL

 * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES

 * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL TODD C. MILLER BE LIABLE

 * FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES

 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION

 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN

 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

 */

#include <sys/types.h>

#include <assert.h>

#include <string.h>

#include "fm_strl.h"

#ifndef HAVE_STRLCPY

/*

 * Copy src to string dst of size siz.  At most siz-1 characters

 * will be copied.  Always NUL terminates (unless siz == 0).

 * Returns strlen(src); if retval >= siz, truncation occurred.

 */

size_t

strlcpy(char *dst, const char *src, size_t siz)

{

	char *d = dst;

	const char *s = src;

	size_t n = siz;

	/* Copy as many bytes as will fit */

	if (n != 0 && --n != 0) {

		do {

			if ((*d++ = *s++) == 0)

				break;

		} while (--n != 0);

	}

	/* Not enough room in dst, add NUL and traverse rest of src */

	if (n == 0) {

		if (siz != 0)

			*d = '\0';		/* NUL-terminate dst */

		while (*s++)

			;

	}

	return(s - src - 1);	/* count does not include NUL */

}

#endif