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/*
FUNCTION
<<wcslcpy>>---copy a wide-character string to specified length
ANSI_SYNOPSIS
#include <wchar.h>
size_t wcslcpy(wchar_t *<[dst]>, const wchar_t *<[src]>, size_t <[siz]>);
TRAD_SYNOPSIS
#include <wchar.h>
size_t wcslcpy(<[dst]>, <[src]>, <[siz]>)
wchar_t *<[dst]>;
const wchar_t *<[src]>;
size_t <[siz]>;
DESCRIPTION
<<wcslcpy>> copies wide-characters from <[src]> to <[dst]>
such that up to <[siz]> - 1 characters are copied. A
terminating null is appended to the result, unless <[siz]>
is zero.
RETURNS
<<wcslcpy>> returns the number of wide-characters in <[src]>,
not including the terminating null wide-character. If the
return value is greater than or equal to <[siz]>, then
not all wide-characters were copied from <[src]> and truncation
occurred.
PORTABILITY
No supporting OS subroutines are required.
*/
/* $NetBSD: wcslcpy.c,v 1.1 2000/12/23 23:14:36 itojun Exp $ */
/* from OpenBSD: strlcpy.c,v 1.4 1999/05/01 18:56:41 millert Exp */
/*
* Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
* 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.
*/
#include <_ansi.h>
#include <wchar.h>
/*
* Copy src to string dst of size siz. At most siz-1 characters
* will be copied. Always NUL terminates (unless siz == 0).
* Returns wcslen(src); if retval >= siz, truncation occurred.
*/
size_t
_DEFUN (wcslcpy, (dst, src, siz),
wchar_t * dst _AND
_CONST wchar_t * src _AND
size_t siz)
{
wchar_t *d = dst;
_CONST wchar_t *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 */
}
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