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 arrayavg
021 */
022package lucee.runtime.functions.list;
023
024import lucee.runtime.PageContext;
025import lucee.runtime.exp.ExpressionException;
026import lucee.runtime.exp.FunctionException;
027import lucee.runtime.exp.PageException;
028import lucee.runtime.functions.BIF;
029import lucee.runtime.op.Caster;
030import lucee.runtime.type.util.ArrayUtil;
031import lucee.runtime.type.util.ListUtil;
032
033
034public final class ListAvg extends BIF {
035
036        private static final long serialVersionUID = -7365055491706152507L;
037
038        public static double call(PageContext pc , String list) throws ExpressionException {
039        return call(pc,list,",",false);
040    }
041    public static double call(PageContext pc , String list, String delimiter) throws ExpressionException {
042        return call(pc, list, delimiter, false);
043    }
044    
045    public static double call(PageContext pc , String list, String delimiter, boolean multiCharacterDelimiter) throws ExpressionException {
046        return ArrayUtil.avg(ListUtil.listToArray(list, delimiter,false, multiCharacterDelimiter));
047    }
048
049    @Override
050        public Object invoke(PageContext pc, Object[] args) throws PageException {
051        if(args.length==1)
052                        return call(pc, Caster.toString(args[0]));
053        if(args.length==2)
054                        return call(pc, Caster.toString(args[0]), Caster.toString(args[1]));
055        if(args.length==3)
056                        return call(pc, Caster.toString(args[0]), Caster.toString(args[1]), Caster.toBooleanValue(args[2]));
057        
058                throw new FunctionException(pc, "ListAvg", 1, 3, args.length);
059        }
060}