0,0 → 1,102 |
/* |
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 */ |
} |