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 gettoken 021 */ 022package lucee.runtime.functions.string; 023 024import java.util.StringTokenizer; 025 026import lucee.runtime.PageContext; 027import lucee.runtime.exp.ExpressionException; 028import lucee.runtime.exp.FunctionException; 029import lucee.runtime.exp.PageException; 030import lucee.runtime.functions.BIF; 031import lucee.runtime.op.Caster; 032 033public final class GetToken extends BIF { 034 035 private static final long serialVersionUID = 4114410822911429954L; 036 037 public static String call(PageContext pc , String str, double index) throws ExpressionException { 038 return call(pc,str,index,null); 039 } 040 public static String call(PageContext pc , String str, double index, String delimiters) throws ExpressionException { 041 if(delimiters==null) delimiters="\r\n\t "; 042 043 if(index<1) 044 throw new FunctionException(pc,"getToken",2,"index","index must be a positive number now ("+((int)index)+")"); 045 046 StringTokenizer tokens=new StringTokenizer(str,delimiters); 047 int count=0; 048 while(tokens.hasMoreTokens()) { 049 if(++count==index)return tokens.nextToken(); 050 tokens.nextToken(); 051 } 052 return ""; 053 } 054 055 @Override 056 public Object invoke(PageContext pc, Object[] args) throws PageException { 057 if(args.length==2) 058 return call(pc, Caster.toString(args[0]), Caster.toDoubleValue(args[1])); 059 if(args.length==3) 060 return call(pc, Caster.toString(args[0]), Caster.toDoubleValue(args[1]), Caster.toString(args[2])); 061 062 throw new FunctionException(pc, "GetToken", 2, 3, args.length); 063 } 064}