/*
* Copyright (C) 2000 - 2008 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.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 charat extends functionBase {
private static final long serialVersionUID = 1L;
public charat(){
min = max = 2;
setNamedParams( new String[]{ "string", "position" } );
}
public String[] getParamInfo(){
return new String[]{
"String",
"position"
};
}
public java.util.Map getInfo(){
return makeInfo(
"string",
"Returns the ascii character, as a string, of the position indicated",
ReturnType.NUMERIC );
}
public cfData execute(cfSession _session, cfArgStructData argStruct ) throws cfmRunTimeException {
String value = getNamedStringParam( argStruct, "string" , "");
int space = getInt( _session, getNamedParam( argStruct, "position" ));
if ( space < 1 || space > value.length() )
throwException( _session, "the count value is out of range" );
return new cfStringData( value.charAt(space-1)+"" );
}
}