SourceComparator.java

/*******************************************************************************
 * Copyright (c) 2007, 2009 Red Hat, Inc.
 * 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
 *
 * Contributors:
 *    Red Hat - initial API and implementation
 *******************************************************************************/

package org.eclipse.linuxtools.internal.rpm.ui.editor.parser;

import java.io.Serializable;
import java.util.Comparator;

public class SourceComparator implements Comparator<SpecfileSource>,
        Serializable {
    private static final long serialVersionUID = 1L;

    @Override
    public int compare(SpecfileSource source0, SpecfileSource source1) {
        if (source0 == null) {
            return -1;
        }
        if (source1 == null) {
            return 1;
        }
        if (source0.getNumber() < source1.getNumber()) {
            return -1;
        } else if (source0.getNumber() == source1.getNumber()) {
            return 0;
        } else {
            return 1;
        }
    }
}