001    /*
002     * Copyright (C) 2003-2009 eXo Platform SAS.
003     *
004     * This is free software; you can redistribute it and/or modify it
005     * under the terms of the GNU Lesser General Public License as
006     * published by the Free Software Foundation; either version 2.1 of
007     * the License, or (at your option) any later version.
008     *
009     * This software is distributed in the hope that it will be useful,
010     * but WITHOUT ANY WARRANTY; without even the implied warranty of
011     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
012     * Lesser General Public License for more details.
013     *
014     * You should have received a copy of the GNU Lesser General Public
015     * License along with this software; if not, write to the Free
016     * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
017     * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
018     */
019    package org.crsh.util;
020    
021    import java.io.Closeable;
022    import java.io.IOException;
023    import java.net.Socket;
024    
025    /**
026     * @author <a href="mailto:julien.viet@exoplatform.com">Julien Viet</a>
027     * @version $Revision$
028     */
029    public class Safe {
030    
031      public static void close(Socket socket) {
032        if (socket != null) {
033          try {
034            socket.close();
035          }
036          catch (IOException ignore) {
037          }
038        }
039      }
040    
041      public static void close(Closeable closeable) {
042        if (closeable != null) {
043          try {
044            closeable.close();
045          }
046          catch (IOException ignore) {
047          }
048        }
049      }
050    
051      public static <T extends Throwable> void rethrow(Class<T> throwableClass, Throwable cause) throws T {
052        T throwable;
053    
054        //
055        try {
056          throwable = throwableClass.newInstance();
057        }
058        catch (Exception e) {
059          throw new AssertionError(e);
060        }
061    
062        //
063        throwable.initCause(cause);
064    
065        //
066        throw throwable;
067      }
068    }