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 listgetat 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 ListGetAt extends BIF { 032 033 private static final long serialVersionUID = -8227074223983816122L; 034 035 public static String call(PageContext pc , String list, double posNumber) throws PageException { 036 return call(pc,list,posNumber,",",false); 037 } 038 039 public static String call(PageContext pc , String list, double posNumber, String delimiter) throws PageException { 040 return call(pc,list,posNumber,delimiter,false); 041 } 042 043 public static String call(PageContext pc , String list, double posNumber, String delimiter, boolean includeEmptyFields) throws PageException { 044 int pos=(int) posNumber; 045 String rtn = ListUtil.getAt(list,delimiter,pos-1,!includeEmptyFields,null); 046 if(rtn==null) throw new FunctionException(pc,"listGetAt",2,"posNumber","invalid string list index ["+pos+"]"); 047 return rtn; 048 } 049 @Override 050 public Object invoke(PageContext pc, Object[] args) throws PageException { 051 if(args.length==2) 052 return call(pc, Caster.toString(args[0]), Caster.toDoubleValue(args[1])); 053 if(args.length==3) 054 return call(pc, Caster.toString(args[0]), Caster.toDoubleValue(args[1]), Caster.toString(args[2])); 055 if(args.length==4) 056 return call(pc, Caster.toString(args[0]), Caster.toDoubleValue(args[1]), Caster.toString(args[2]), Caster.toBooleanValue(args[3])); 057 058 throw new FunctionException(pc, "ListGetAt", 2, 4, args.length); 059 } 060}