HexToIntegerConverter.java

/**
 * Copyright (c) 2010-2016 by the respective copyright holders.
 *
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 */
package org.openhab.binding.zwave.internal;

import com.thoughtworks.xstream.converters.Converter;
import com.thoughtworks.xstream.converters.MarshallingContext;
import com.thoughtworks.xstream.converters.UnmarshallingContext;
import com.thoughtworks.xstream.io.HierarchicalStreamReader;
import com.thoughtworks.xstream.io.HierarchicalStreamWriter;

/**
 * Implements a Hex value to integer converter and vice versa.
 *
 * @author Jan-Willem Spuij
 * @since 1.4.0
 */
public class HexToIntegerConverter implements Converter {

    /**
     * {@inheritDoc}
     */
    @SuppressWarnings("rawtypes")
    @Override
    public boolean canConvert(Class type) {
        return type.equals(Integer.class) || type.equals(int.class);
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public void marshal(Object source, HierarchicalStreamWriter writer, MarshallingContext context) {
        int number = (Integer) source;
        writer.setValue("0x" + Integer.toHexString(number));
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public Object unmarshal(HierarchicalStreamReader reader, UnmarshallingContext context) {
        String value = reader.getValue();
        long lVal;
        if (value.startsWith("0x")) {
            lVal = Long.decode(value);
        } else {
            lVal = Long.parseLong(value, 16);
        }

        return (int) lVal;
    }
}