/****************************************************************************
*
* Open Watcom Project
*
* Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved.
*
* ========================================================================
*
* This file contains Original Code and/or Modifications of Original
* Code as defined in and that are subject to the Sybase Open Watcom
* Public License version 1.0 (the 'License'). You may not use this file
* except in compliance with the License. BY USING THIS FILE YOU AGREE TO
* ALL TERMS AND CONDITIONS OF THE LICENSE. A copy of the License is
* provided with the Original Code and Modifications, and is also
* available at www.sybase.com/developer/opensource.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND SYBASE AND ALL CONTRIBUTORS HEREBY DISCLAIM
* ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR
* NON-INFRINGEMENT. Please see the License for the specific language
* governing rights and limitations under the License.
*
* ========================================================================
*
* Description: Implementation of BSD style strlcat() and wcslcat().
*
****************************************************************************/
#include "variety.h"
#include "widechar.h"
#include <string.h>
_WCRTLINK size_t __F_NAME(strlcat,wcslcat)( CHAR_TYPE *dst, const CHAR_TYPE *t, size_t n )
{
CHAR_TYPE *s;
size_t len;
s = dst;
// Find end of string in destination buffer but don't overrun
for( len = n; len; --len ) {
if( *s == NULLCHAR ) break;
++s;
}
// If no null char was found in dst, the buffer is messed up; don't
// touch it
if( *s == NULLCHAR ) {
--len; // Decrement len to leave space for terminating null
while( len != 0 ) {
*s = *t;
if( *s == NULLCHAR ) {
return( n - len - 1 );
}
++s;
++t;
--len;
}
// Buffer not large enough. Terminate and figure out desired length
*s = NULLCHAR;
while( *t++ != NULLCHAR )
++n;
--n;
}
return( n );
}