/****************************************************************************
*
* 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: WHEN YOU FIGURE OUT WHAT THIS FILE DOES, PLEASE
* DESCRIBE IT HERE!
*
****************************************************************************/
#include "variety.h"
#include <stdio.h>
#include <string.h>
#include "rtdata.h"
#include "nextftok.h"
#include "setbits.h"
_WCRTLINK char _WCFAR *_fstrtok( char _WCFAR *str, const char _WCFAR *charset )
{
unsigned /*char*/ tc;
unsigned char vector[32];
unsigned char _WCFAR *p1;
_INITNEXTFTOK
if( str == NULL ) {
str = _RWD_nextftok; /* use previous value */
if( str == NULL ) return( NULL );
}
__fsetbits( vector, charset );
for( ; tc = (unsigned char) *str; ++str ) {
/* quit if we find any char not in charset */
if( ( vector[ tc >> 3 ] & _Bits[ tc & 0x07 ] ) == 0 ) break;
}
if( tc == '\0' ) return( NULL );
p1 = str;
for( ; tc = *p1; ++p1 ) {
/* quit when we find any char in charset */
if( ( vector[ tc >> 3 ] & _Bits[ tc & 0x07 ] ) != 0 ) {
*p1 = '\0'; /* terminate the token */
p1++; /* start of next token */
_RWD_nextftok = p1;
return( str );
}
}
_RWD_nextftok = NULL;
return( str );
}