locale.java

J2ME Game Programming的隋书源代码

import java.io.InputStream;
import java.io.IOException;
import java.util.Hashtable;

public class Locale
{
   private final static Locale instance = new Locale();
   private static Hashtable map;

   public Locale()
   {
      //#ifdef debug
      System.out.println("Loading resources from locale.txt");
      //#endif

      map = new Hashtable();

      // load up the resource strings
      InputStream is = null;

      try
      {
         is = this.getClass().getResourceAsStream("locale.txt");

         boolean done = false;
         byte buffer[] = new byte[1];

         StringBuffer line = new StringBuffer();

         // read a line and add the entries
         while (!done)
         {
            int bytesRead = is.read(buffer);
            if (bytesRead != -1)
            {
               if (buffer[0] == '\n')
               {
                  String s = line.toString().trim();

                  // we ignore lines starting with #,  or if they dont have a
                  // = in them, or if the length is smaller than the min of
                  // 3 chars (ie. 'a=b')

                  if (!s.startsWith("#") && s.length() > 2 &&
                       s.indexOf('=') != -1)
                  {
                     String key = s.substring(0, s.indexOf('=')).trim().toLowerCase();
                     String value = s.substring(s.indexOf('=')+1).trim();

                     map.put(key, value);

                     //#ifdef debug
                     System.out.println("Loading setting: " + key + "='" + value + "'");
                     //#endif
                  }
                  line.setLength(0);
               }
               else
                  line.append((char)buffer[0]);
            } else
               done = true;

         }

      }
      catch(IOException io)
      {
         System.out.println("Error loading resources: " + io);
      }

      finally
      {
         try
         {
            is.close();
         }
         catch(IOException io) { }
      }
   }

   public static String getString(String key)
   {
      String s = (String)map.get(key.toLowerCase());
      if (s != null) return s;
      //#ifdef debug
      System.out.println("Attempt to get an unknown defined resource string: " + key);
      //#endif
      return key;
   }

}