/*
    * Copyright (c) 2002-2004
    * All rights reserved.
    */
   
   package com.atlassian.core.util;
   
   import java.util.Comparator;
   import java.util.Locale;
  
  // Locale comparator - compares on locale display name
  public class LocaleComparator implements Comparator<Locale>
  {
      public int compare(Locale l1, Locale l2)
      {
          if (l1 == null && l2 == null)
              return 0;
          else if (l2 == null) // any value is less than null
              return -1;
          else if (l1 == null) // null is greater than any value
              return 1;
  
          String displayName1 = l1.getDisplayName();
          String displayName2 = l2.getDisplayName();
  
          if (displayName1 == null)
          {
              return -1;
          }
          else if (displayName2 == null)
          {
              return 1;
          }
          else
          {
              return displayName1.toLowerCase().compareTo(displayName2.toLowerCase()); //do case insensitive sorting
          }
      }
  }