/**
*
* Copyright (c) 2014, the Railo Company Ltd. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
**/
/**
* Implements the CFML Function right
*/
package lucee.runtime.functions.string;
import lucee.runtime.PageContext;
import lucee.runtime.exp.ExpressionException;
import lucee.runtime.exp.FunctionException;
import lucee.runtime.exp.PageException;
import lucee.runtime.ext.function.BIF;
import lucee.runtime.op.Caster;
public final class Right extends BIF {
private static final long serialVersionUID = 2270997683293984478L;
public static String call(PageContext pc, String str, double number) throws ExpressionException {
int len = (int)number;
if (len == 0) throw new ExpressionException("parameter 2 of the function right can not be 0");
int l=str.length();
if (Math.abs(len) >= l) return str;
if (len < 0) len = l + len;
return str.substring(l-len,l);
}
@Override
public Object invoke(PageContext pc, Object[] args) throws PageException {
if(args.length==2)
return call(pc, Caster.toString(args[0]), Caster.toDoubleValue(args[1]));
throw new FunctionException(pc, "Right", 2, 2, args.length);
}
}