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 listsetat 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.Array; 031import lucee.runtime.type.util.ListUtil; 032 033public final class ListSetAt extends BIF { 034 035 private static final long serialVersionUID = -105782799713547552L; 036 037 public static String call(PageContext pc , String list, double posNumber, String value) throws ExpressionException { 038 return call(pc,list,posNumber,value,",",false); 039 } 040 041 public static String call(PageContext pc , String list, double posNumber, String value, String delimiter) throws ExpressionException { 042 return call(pc,list,posNumber,value,delimiter,false); 043 } 044 public static String call(PageContext pc , String list, double posNumber, String value, String delimiter, boolean includeEmptyFields) throws ExpressionException { 045 046 if(list.length()==0) 047 throw new FunctionException(pc,"listSetAt",1,"list","can't be empty"); 048 049 050 int pos=((int) posNumber); 051 //int[] removedInfo=new int[2]; 052 053 Array arr = ListUtil.listToArray(list,delimiter); 054 int len=arr.size(); 055 056 // invalid index 057 if(pos<1) 058 throw new FunctionException(pc,"listSetAt",2,"position","invalid string list index ["+(pos)+"]"); 059 else if(len<pos) { 060 throw new FunctionException(pc,"listSetAt",2,"position","invalid string list index ["+(pos)+"], indexes go from 1 to "+(len)); 061 } 062 063 StringBuilder sb=new StringBuilder();//RepeatString.call(new StringBuffer(),delimiter,removedInfo[0]); 064 boolean hasStart=false; 065 boolean hasSet=false; 066 String v; 067 int count=0; 068 for(int i=1;i<=len;i++) { 069 v=(String)arr.get(i,""); 070 if(hasStart) { 071 sb.append(delimiter); 072 } 073 else hasStart=true; 074 075 if(includeEmptyFields || v.length()>0)count++; 076 if(!hasSet && pos==count) { 077 sb.append(value); 078 hasSet=true; 079 } 080 else sb.append(arr.get(i,"")); 081 } 082 if(!hasSet){ 083 throw new FunctionException(pc,"listSetAt",2,"position","invalid string list index ["+(pos)+"]"); 084 } 085 086 087 return sb.toString(); 088 } 089 090 @Override 091 public Object invoke(PageContext pc, Object[] args) throws PageException { 092 if(args.length==3) 093 return call(pc, Caster.toString(args[0]), Caster.toDoubleValue(args[1]), Caster.toString(args[2])); 094 if(args.length==4) 095 return call(pc, Caster.toString(args[0]), Caster.toDoubleValue(args[1]), Caster.toString(args[2]), Caster.toString(args[3])); 096 if(args.length==5) 097 return call(pc, Caster.toString(args[0]), Caster.toDoubleValue(args[1]), Caster.toString(args[2]), Caster.toString(args[3]), Caster.toBooleanValue(args[4])); 098 099 throw new FunctionException(pc, "ListSetAt", 3, 5, args.length); 100 } 101}