/* 
 *  Copyright (C) 2000 - 2010 TagServlet Ltd
 *
 *  This file is part of Open BlueDragon (OpenBD) CFML Server Engine.
 *  
 *  OpenBD is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  Free Software Foundation,version 3.
 *  
 *  OpenBD is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *  
 *  You should have received a copy of the GNU General Public License
 *  along with OpenBD.  If not, see http://www.gnu.org/licenses/
 *  
 *  Additional permission under GNU GPL version 3 section 7
 *  
 *  If you modify this Program, or any covered work, by linking or combining 
 *  it with any of the JARS listed in the README.txt (or a modified version of 
 *  (that library), containing parts covered by the terms of that JAR, the 
 *  licensors of this Program grant you additional permission to convey the 
 *  resulting work. 
 *  README.txt @ http://www.openbluedragon.org/license/README.txt
 *  
 *  http://www.openbluedragon.org/
 */

package com.naryx.tagfusion.expression.function.string;

import com.nary.util.stringtokenizer;
import com.naryx.tagfusion.cfm.engine.cfArgStructData;
import com.naryx.tagfusion.cfm.engine.cfData;
import com.naryx.tagfusion.cfm.engine.cfSession;
import com.naryx.tagfusion.cfm.engine.cfStringData;
import com.naryx.tagfusion.cfm.engine.cfmRunTimeException;
import com.naryx.tagfusion.expression.function.functionBase;
 	
public class replaceList extends functionBase {
  
  private static final long serialVersionUID = 1L;
	
  public replaceList(){
     min = max = 3;
     setNamedParams( new String[]{ "string","listsub","listnew"} );
  }
  
	public String[] getParamInfo(){
		return new String[]{
			"string",
			"list of sub-strings",
			"list of new substring",
		};
	}
	
	public java.util.Map getInfo(){
		return makeInfo(
				"string", 
				"Peforms a series of search'n'replace on a single string using the comma-separated lists passed in", 
				ReturnType.STRING );
	}
  
	public cfData execute(cfSession _session, cfArgStructData argStruct ) throws cfmRunTimeException {
		
 		String string = getNamedStringParam(argStruct, "string", "");
  	String list1 = getNamedStringParam(argStruct, "listsub", "");
  	String list2 = getNamedStringParam(argStruct, "listnew", "");
  	
  	String delimiter = ",";
  	
		stringtokenizer st1 = new stringtokenizer( list1, delimiter );
		stringtokenizer st2 = new stringtokenizer( list2, delimiter ); 
  	
  	while( st1.hasMoreTokens() )
  		string = com.nary.util.string.replaceString( string, st1.nextToken(), st2.nextToken() );
  
   	return new cfStringData( string );
  }
}