/*
 * 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 "cext.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.
 */
unsigned int
cext_strlcpy(char *dst, const char *src, unsigned int siz)
{
	register char *d = dst;
	register const char *s = src;
	register unsigned int 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 */
}