Application: gvSIG desktop

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

import org.apache.commons.lang3.Range;

import org.gvsig.expressionevaluator.Interpreter;

import org.gvsig.expressionevaluator.spi.AbstractFunction;

public class RTrimFunction extends AbstractFunction {

    public RTrimFunction() {

        super("String", "RTRIM", Range.is(1));

    }

    @Override

    public boolean allowConstantFolding() {

        return true;

    }

    @Override

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

        String str = getStr(args,0);

        return rtrim(str);

    }

    public static String rtrim(String s) {

        int i = s.length() - 1;

        while( i >= 0 && Character.isWhitespace(s.charAt(i)) ) {

            i--;

        }

        return s.substring(0, i + 1);

    }

}