001/**
002 *
003 * Copyright (c) 2014, the Railo Company Ltd. All rights reserved.
004 *
005 * This library is free software; you can redistribute it and/or
006 * modify it under the terms of the GNU Lesser General Public
007 * License as published by the Free Software Foundation; either 
008 * version 2.1 of the License, or (at your option) any later version.
009 * 
010 * This library is distributed in the hope that it will be useful,
011 * but WITHOUT ANY WARRANTY; without even the implied warranty of
012 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
013 * Lesser General Public License for more details.
014 * 
015 * You should have received a copy of the GNU Lesser General Public 
016 * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
017 * 
018 **/
019/**
020 * Implements the CFML Function structkeyexists
021 */
022package lucee.runtime.functions.list;
023
024import lucee.runtime.PageContext;
025import lucee.runtime.exp.FunctionException;
026import lucee.runtime.exp.PageException;
027import lucee.runtime.functions.BIF;
028import lucee.runtime.op.Caster;
029import lucee.runtime.type.util.ListUtil;
030
031public final class ListIndexExists extends BIF {
032   
033        private static final long serialVersionUID = 7642583305678735361L;
034        
035        public static boolean call(PageContext pc , String list, double index) {
036        return call(pc,list,index,",",false);
037    }
038    public static boolean call(PageContext pc , String list, double index, String delimiter) {
039        return call(pc,list,index,delimiter,false);
040    }
041    public static boolean call(PageContext pc , String list, double index, String delimiter,boolean includeEmptyFields) {
042        if(includeEmptyFields)return ListUtil.listToArray(list,delimiter).get((int)index,null)!=null;
043        return ListUtil.listToArrayRemoveEmpty(list,delimiter).get((int)index,null)!=null;
044    }
045    
046    @Override
047        public Object invoke(PageContext pc, Object[] args) throws PageException {
048        if(args.length==2)
049                        return call(pc, Caster.toString(args[0]), Caster.toDoubleValue(args[1]));
050        if(args.length==3)
051                        return call(pc, Caster.toString(args[0]), Caster.toDoubleValue(args[1]), Caster.toString(args[2]));
052        if(args.length==4)
053                        return call(pc, Caster.toString(args[0]), Caster.toDoubleValue(args[1]), Caster.toString(args[2]), Caster.toBooleanValue(args[3]));
054        
055                throw new FunctionException(pc, "ListIndexExists", 2, 4, args.length);
056        }
057}