content: /**
   * This file is part of Aion-Lightning <aion-lightning.org>.
   *
   *  Aion-Lightning is free software: you can redistribute it and/or modify
   *  it under the terms of the GNU General Public License as published by
   *  the Free Software Foundation, either version 3 of the License, or
   *  (at your option) any later version.
   *
   *  Aion-Lightning is distributed in the hope that it will be useful,
   *  but WITHOUT ANY WARRANTY; without even the implied warranty of
   *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   *  GNU General Public License for more details. *
   *  You should have received a copy of the GNU General Public License
   *  along with Aion-Lightning.
   *  If not, see <http://www.gnu.org/licenses/>.
   */
  
  package com.aionemu.commons.utils.i18n;
  
  import java.io.IOException;
  import java.io.InputStream;
  import java.io.InputStreamReader;
  import java.net.URL;
  import java.net.URLConnection;
  import java.security.AccessController;
  import java.security.PrivilegedActionException;
  import java.security.PrivilegedExceptionAction;
  import java.util.Locale;
  import java.util.PropertyResourceBundle;
  import java.util.ResourceBundle;
  
  /**
   * This class allows us to read ResourceBundles with custom encodings, so we
   * don't have write \\uxxxx symbols and use utilities like native2ascii to
   * convert files.
   * <p/>
   * <br>
   * Usage: For instance we want to load resource bundle "test" from current
   * deirectory and use english locale. If locale not found, we will use default
   * file (and ignore default locale).
   * 
   * <pre>
   * URLClassLoader loader = new URLClassLoader(new URL[] { new File(&quot;.&quot;).toURI().toURL() });
   * 
   * ResourceBundle rb = ResourceBundle.getBundle(&quot;test&quot;, Locale.ENGLISH, loader, new ResourceBundleControl(&quot;UTF-8&quot;));
   * 
   * // English locale not found, use default
   * if (!rb.getLocale().equals(Locale.ENGLISH)) {
   * 	rb = ResourceBundle.getBundle(&quot;test&quot;, Locale.ROOT, loader, new ResourceBundleControl(&quot;UTF-8&quot;));
   * }
   * 
   * System.out.println(rb.getString(&quot;test&quot;));
   * </pre>
   * 
   * @author SoulKeeper
   */
  public class ResourceBundleControl extends ResourceBundle.Control {
  
  	/**
  	 * Encoding which will be used to read resource bundle, by defaults it's
  	 * 8859_1
  	 */
  	private String encoding = "UTF-8";
  
  	/**
  	 * Just empty default constructor
  	 */
  	public ResourceBundleControl() {
  	}
  
  	/**
  	 * This constructor allows to set encoding that will be used while reading
  	 * resource bundle
  	 * 
  	 * @param encoding
  	 *            encoding to use
  	 */
  	public ResourceBundleControl(String encoding) {
  		this.encoding = encoding;
  	}
  
  	/**
  	 * This code is just copy-paste with usage {@link java.io.Reader} instead of
  	 * {@link java.io.InputStream} to read properties.<br>
  	 * <br>
  	 * {@inheritDoc}
  	 */
  	@Override
  	public ResourceBundle newBundle(String baseName, Locale locale, String format, ClassLoader loader, boolean reload)
  			throws IllegalAccessException, InstantiationException, IOException {
  		String bundleName = toBundleName(baseName, locale);
  		ResourceBundle bundle = null;
  		if (format.equals("java.class")) {
  			try {
  				@SuppressWarnings({ "unchecked" })
  				Class<? extends ResourceBundle> bundleClass = (Class<? extends ResourceBundle>) loader
  						.loadClass(bundleName);
  
  				// If the class isn't a ResourceBundle subclass, throw a
  				// ClassCastException.
  				if (ResourceBundle.class.isAssignableFrom(bundleClass)) {
  					bundle = bundleClass.newInstance();
  				} else {
  					throw new ClassCastException(bundleClass.getName() + " cannot be cast to ResourceBundle");
  				}
  			} catch (ClassNotFoundException ignored) {
  			}
  		} else if (format.equals("java.properties")) {
  			final String resourceName = toResourceName(bundleName, "properties");
  			final ClassLoader classLoader = loader;
  			final boolean reloadFlag = reload;
  			InputStreamReader isr = null;
  			InputStream stream;
  			try {
  				stream = AccessController.doPrivileged(new PrivilegedExceptionAction<InputStream>() {
  
  					@Override
  					public InputStream run() throws IOException {
  						InputStream is = null;
  						if (reloadFlag) {
  							URL url = classLoader.getResource(resourceName);
  							if (url != null) {
  								URLConnection connection = url.openConnection();
  								if (connection != null) {
  									// Disable caches to get fresh data for
  									// reloading.
  									connection.setUseCaches(false);
  									is = connection.getInputStream();
  								}
  							}
  						} else {
  							is = classLoader.getResourceAsStream(resourceName);
  						}
  						return is;
  					}
  				});
  				if (stream != null) {
  					isr = new InputStreamReader(stream, encoding);
  				}
  			} catch (PrivilegedActionException e) {
  				throw (IOException) e.getException();
  			}
  			if (isr != null) {
  				try {
  					bundle = new PropertyResourceBundle(isr);
  				} finally {
  					isr.close();
  				}
  			}
  		} else {
  			throw new IllegalArgumentException("unknown format: " + format);
  		}
  		return bundle;
  	}
  
  	/**
  	 * Returns encoding that will be used to read .properties resource bundles
  	 * 
  	 * @return encoding
  	 */
  	public String getEncoding() {
  		return encoding;
  	}
  
  	/**
  	 * Sets the encoding that will be used to read properties resource bundles
  	 * 
  	 * @param encoding
  	 *            encoding that will be used for properties
  	 */
  	public void setEncoding(String encoding) {
  		this.encoding = encoding;
  	}
  }
  