/*
 * The contents of this file are subject to the terms of the Common Development and
 * Distribution License (the License). You may not use this file except in compliance with the
 * License.
 *
 * You can obtain a copy of the License at legal/CDDLv1.0.txt. See the License for the
 * specific language governing permission and limitations under the License.
 *
 * When distributing Covered Software, include this CDDL Header Notice in each file and include
 * the License file at legal/CDDLv1.0.txt. If applicable, add the following below the CDDL
 * Header, with the fields enclosed by brackets [] replaced by your own identifying
 * information: "Portions Copyright [year] [name of copyright owner]".
 *
 * Copyright 2008 Sun Microsystems, Inc.
 * Portions Copyright 2015-2016 ForgeRock AS.
 */

package org.opends.guitools.controlpanel.util;

import java.util.Comparator;

/**
 * Class used to compare Strings without taking into account the case.
 * It can be used to sort Strings in TreeSets for instance.
 */
public class LowerCaseComparator implements Comparator<String>
{
  @Override
  public int compare(String s1, String s2)
  {
    if (s1 != null && s2 != null)
    {
      return s1.toLowerCase().compareTo(s2.toLowerCase());
    }
    else if (s2 != null)
    {
      return -1;
    }
    else if (s1 != null)
    {
      return 1;
    }
    else
    {
      return 0;
    }
  }
}