/*      $NetBSD: strlcpy.c,v 1.5 2020/05/25 20:47:33 christos Exp $     */

/*      $OpenBSD: strlcpy.c,v 1.5 2001/05/13 15:40:16 deraadt Exp $     */

/*
* Copyright (c) 1998 Todd C. Miller <[email protected]>
* 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.
*/

#if defined(LIBC_SCCS) && !defined(lint)
static char *rcsid = "$OpenBSD: strlcpy.c,v 1.5 2001/05/13 15:40:16 deraadt Exp $";
#endif /* LIBC_SCCS and not lint */

#include "event2/event-config.h"
#include "evconfig-private.h"

#include <sys/types.h>

#ifndef EVENT__HAVE_STRLCPY
#include "strlcpy-internal.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
event_strlcpy_(dst, src, siz)
       char *dst;
       const char *src;
       size_t siz;
{
       register char *d = dst;
       register const char *s = src;
       register 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