trunk/apache-rat-core/src/main/java/org/apache/rat/walker/FileNameComparator.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one   *
 * or more contributor license agreements.  See the NOTICE file *
 * distributed with this work for additional information        *
 * regarding copyright ownership.  The ASF licenses this file   *
 * to you under the Apache License, Version 2.0 (the            *
 * "License"); you may not use this file except in compliance   *
 * with the License.  You may obtain a copy of the License at   *
 *                                                              *
 *   http://www.apache.org/licenses/LICENSE-2.0                 *
 *                                                              *
 * Unless required by applicable law or agreed to in writing,   *
 * software distributed under the License is distributed on an  *
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY       *
 * KIND, either express or implied.  See the License for the    *
 * specific language governing permissions and limitations      *
 * under the License.                                           *
 */ 
package org.apache.rat.walker;

import java.io.File;
import java.util.Comparator;

class FileNameComparator implements Comparator<File> {

    public int compare(File firstFile, File secondFile) {
        int result = 0;
        if (firstFile == null) {
            if (secondFile != null) {
                result = 1;
            }
        } else {
            if (secondFile == null) {
                result = -1;
            } else {
                final String firstName = firstFile.getName();
                final String secondName = secondFile.getName();
                result = firstName.compareTo(secondName);
            }
        }
        return result;
    }

}