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/*        $OpenBSD: strlcpy.c,v 1.10 2005/08/08 08:05:37 espie 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 THE AUTHOR DISCLAIMS ALL WARRANTIES

 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF

 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR 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 <string.h>

/*

 * 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 */

}