1272343Sngie/* 2272343Sngie * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com> 3272343Sngie * All rights reserved. 4272343Sngie * 5272343Sngie * Redistribution and use in source and binary forms, with or without 6272343Sngie * modification, are permitted provided that the following conditions 7272343Sngie * are met: 8272343Sngie * 1. Redistributions of source code must retain the above copyright 9272343Sngie * notice, this list of conditions and the following disclaimer. 10272343Sngie * 2. Redistributions in binary form must reproduce the above copyright 11272343Sngie * notice, this list of conditions and the following disclaimer in the 12272343Sngie * documentation and/or other materials provided with the distribution. 13272343Sngie * 3. The name of the author may not be used to endorse or promote products 14272343Sngie * derived from this software without specific prior written permission. 15272343Sngie * 16272343Sngie * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, 17272343Sngie * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY 18272343Sngie * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL 19272343Sngie * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 20272343Sngie * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21272343Sngie * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 22272343Sngie * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 23272343Sngie * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 24272343Sngie * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 25272343Sngie * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26272343Sngie * 27272343Sngie * from OpenBSD: strlcpy.c,v 1.4 1999/05/01 18:56:41 millert Exp 28272343Sngie */ 29272343Sngie 30272343Sngie#include <sys/cdefs.h> 31272343Sngie#if 0 32272343Sngie#if defined(LIBC_SCCS) && !defined(lint) 33272343Sngie__RCSID("$NetBSD: wcslcpy.c,v 1.1 2000/12/23 23:14:36 itojun Exp $"); 34272343Sngie#endif /* LIBC_SCCS and not lint */ 35272343Sngie#endif 36272343Sngie__FBSDID("$FreeBSD$"); 37272343Sngie 38272343Sngie#include <sys/types.h> 39272343Sngie#include <wchar.h> 40272343Sngie 41272343Sngie/* 42272343Sngie * Copy src to string dst of size siz. At most siz-1 characters 43272343Sngie * will be copied. Always NUL terminates (unless siz == 0). 44272343Sngie * Returns wcslen(src); if retval >= siz, truncation occurred. 45272343Sngie */ 46272343Sngiesize_t 47272343Sngiewcslcpy(wchar_t *dst, const wchar_t *src, size_t siz) 48272343Sngie{ 49272343Sngie wchar_t *d = dst; 50272343Sngie const wchar_t *s = src; 51272343Sngie size_t n = siz; 52272343Sngie 53272343Sngie /* Copy as many bytes as will fit */ 54272343Sngie if (n != 0 && --n != 0) { 55272343Sngie do { 56272343Sngie if ((*d++ = *s++) == 0) 57272343Sngie break; 58272343Sngie } while (--n != 0); 59272343Sngie } 60272343Sngie 61272343Sngie /* Not enough room in dst, add NUL and traverse rest of src */ 62272343Sngie if (n == 0) { 63272343Sngie if (siz != 0) 64272343Sngie *d = '\0'; /* NUL-terminate dst */ 65272343Sngie while (*s++) 66272343Sngie ; 67272343Sngie } 68272343Sngie 69272343Sngie return(s - src - 1); /* count does not include NUL */ 70272343Sngie} 71272343Sngie