mirror of
https://github.com/autc04/Retro68.git
synced 2024-11-28 05:51:04 +00:00
109 lines
3.6 KiB
C
109 lines
3.6 KiB
C
/*
|
|
FUNCTION
|
|
<<wcslcat>>---concatenate wide-character strings to specified length
|
|
|
|
ANSI_SYNOPSIS
|
|
#include <wchar.h>
|
|
size_t wcslcat(wchar_t *<[dst]>, const wchar_t *<[src]>, size_t <[siz]>);
|
|
|
|
TRAD_SYNOPSIS
|
|
#include <wchar.h>
|
|
size_t wcslcat(<[dst]>, <[src]>, <[siz]>
|
|
wchar_t *<[dst]>;
|
|
const wchar_t *<[src]>;
|
|
size_t <[siz]>;
|
|
|
|
DESCRIPTION
|
|
The <<wcslcat>> function appends wide characters from <[src]> to
|
|
end of the <[dst]> wide-character string so that the resultant
|
|
wide-character string is not more than <[siz]> wide characters
|
|
including the terminating null wide-character code. A terminating
|
|
null wide character is always added unless <[siz]> is 0. Thus,
|
|
the maximum number of wide characters that can be appended from
|
|
<[src]> is <[siz]> - 1. If copying takes place between objects
|
|
that overlap, the behaviour is undefined.
|
|
|
|
RETURNS
|
|
Wide-character string length of initial <[dst]> plus the
|
|
wide-character string length of <[src]> (does not include
|
|
terminating null wide-characters). If the return value is
|
|
greater than or equal to <[siz]>, then truncation occurred and
|
|
not all wide characters from <[src]> were appended.
|
|
|
|
PORTABILITY
|
|
No supporting OS subroutines are required.
|
|
*/
|
|
|
|
/* $NetBSD: wcslcat.c,v 1.1 2000/12/23 23:14:36 itojun Exp $ */
|
|
/* from OpenBSD: strlcat.c,v 1.3 2000/11/24 11:10:02 itojun 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>
|
|
|
|
/*
|
|
* Appends src to string dst of size siz (unlike wcsncat, siz is the
|
|
* full size of dst, not space left). At most siz-1 characters
|
|
* will be copied. Always NUL terminates (unless siz == 0).
|
|
* Returns wcslen(initial dst) + wcslen(src); if retval >= siz,
|
|
* truncation occurred.
|
|
*/
|
|
size_t
|
|
_DEFUN (wcslcat, (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;
|
|
size_t dlen;
|
|
|
|
/* Find the end of dst and adjust bytes left but don't go past end */
|
|
while (*d != '\0' && n-- != 0)
|
|
d++;
|
|
dlen = d - dst;
|
|
n = siz - dlen;
|
|
|
|
if (n == 0)
|
|
return (dlen + wcslen (s));
|
|
while (*s != '\0')
|
|
{
|
|
if (n != 1)
|
|
{
|
|
*d++ = *s;
|
|
n--;
|
|
}
|
|
s++;
|
|
}
|
|
*d = '\0';
|
|
|
|
return (dlen + (s - src)); /* count does not include NUL */
|
|
}
|