SpanExcluding.java

/**
 *
 * Copyright (c) 2014, the Railo Company Ltd. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either 
 * version 2.1 of the License, or (at your option) any later version.
 * 
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public 
 * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
 * 
 **/
/**
 * Implements the CFML Function spanexcluding
 */
package lucee.runtime.functions.string;

import java.util.StringTokenizer;

import lucee.runtime.PageContext;
import lucee.runtime.exp.FunctionException;
import lucee.runtime.exp.PageException;
import lucee.runtime.ext.function.BIF;
import lucee.runtime.op.Caster;

public final class SpanExcluding extends BIF {

	private static final long serialVersionUID = -2597389089930732011L;

	public static String call(PageContext pc , String str, String set) {
        StringTokenizer stringtokenizer = new StringTokenizer(str, set);
        
        if(stringtokenizer.hasMoreTokens()){
            String rtn = stringtokenizer.nextToken();
            int i = str.indexOf(rtn);
            if(i != 0)
                return "";
            return rtn;
        } 
        return "";
    }

    @Override
	public Object invoke(PageContext pc, Object[] args) throws PageException {
    	if(args.length==2)
			return call(pc, Caster.toString(args[0]), Caster.toString(args[1]));
    	
		throw new FunctionException(pc, "SpanExcluding", 2, 2, args.length);
	}
}