Application: gvSIG desktop

package org.gvsig.expressionevaluator.impl.function.string;

import org.apache.commons.lang3.Range;

import org.apache.commons.lang3.StringUtils;

import org.gvsig.expressionevaluator.Interpreter;

import org.gvsig.expressionevaluator.spi.AbstractFunction;

public class RpadFunction extends AbstractFunction {

    public RpadFunction() {

        super("String", "RPAD", Range.between(2,3));

    }

    @Override

    public boolean allowConstantFolding() {

        return true;

    }

    @Override

    public Object call(Interpreter interpreter, Object[] args) throws Exception {

        String str = getStr(args,0);

        int len = getInt(args, 1);

        String padstr = " ";

        if( args.length == 3 ) {

            padstr = getStr(args,2);

        }

        String r = StringUtils.rightPad(str, len, padstr);

        return r;

    }

}