/*
 * Copyright (C) 2009 eXo Platform SAS.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */
package org.exoplatform.services.jcr.impl.dataflow.serialization;

import org.exoplatform.services.jcr.dataflow.serialization.ObjectWriter;
import org.exoplatform.services.jcr.dataflow.serialization.SerializationConstants;
import org.exoplatform.services.jcr.impl.Constants;

import java.io.BufferedOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

/**
 * Created by The eXo Platform SAS. <br>
 * Date: 13.02.2009
 * 
 * @author <a href="mailto:alex.reshetnyak@exoplatform.com.ua">Alex Reshetnyak</a>
 * @version $Id: JCRObjectOutputImpl.java 111 2008-11-11 11:11:11Z rainf0x $
 */
public class ObjectWriterImpl implements ObjectWriter
{

   /**
    * The output stream.
    */
   private final OutputStream out;

   /**
    * JCR ObjectOutputImpl constructor.
    * 
    * @param out
    *          the OutputStream.
    */
   public ObjectWriterImpl(OutputStream out)
   {
      this.out = new BufferedOutputStream(out, SerializationConstants.INTERNAL_BUFFER_SIZE);
   }

   /**
    * {@inheritDoc}
    */
   public void close() throws IOException
   {
      flush();
      out.close();
   }

   /**
    * {@inheritDoc}
    */
   public void flush() throws IOException
   {
      out.flush();
   }

   /**
    * {@inheritDoc}
    */
   public void write(byte[] b) throws IOException
   {
      out.write(b);
   }

   /**
    * {@inheritDoc}
    */
   public void write(byte[] b, int off, int len) throws IOException
   {
      out.write(b, off, len);
   }

   /**
    * {@inheritDoc}
    */
   public void writeBoolean(boolean v) throws IOException
   {
      out.write(v ? 1 : 0);
   }

   /**
    * {@inheritDoc}
    */
   public void writeByte(byte b) throws IOException
   {
      out.write(b);
   }

   /**
    * {@inheritDoc}
    */
   public void writeInt(int v) throws IOException
   {
      out.write((v >>> 24) & 0xFF);
      out.write((v >>> 16) & 0xFF);
      out.write((v >>> 8) & 0xFF);
      out.write((v >>> 0) & 0xFF);
   }

   /**
    * {@inheritDoc}
    */
   public void writeLong(long v) throws IOException
   {

      byte[] writeBuffer = new byte[8];
      writeBuffer[0] = (byte)(v >>> 56);
      writeBuffer[1] = (byte)(v >>> 48);
      writeBuffer[2] = (byte)(v >>> 40);
      writeBuffer[3] = (byte)(v >>> 32);
      writeBuffer[4] = (byte)(v >>> 24);
      writeBuffer[5] = (byte)(v >>> 16);
      writeBuffer[6] = (byte)(v >>> 8);
      writeBuffer[7] = (byte)(v >>> 0);
      out.write(writeBuffer, 0, 8);
   }

   /**
    * {@inheritDoc}
    */
   public void writeString(String str) throws IOException
   {
      byte[] bytes = str.getBytes(Constants.DEFAULT_ENCODING);
      writeInt(bytes.length);
      write(bytes);
   }

   /**
    * {@inheritDoc}
    */
   public synchronized void writeStream(InputStream stream) throws IOException
   {
      throw new UnsupportedOperationException("Method is not supported");
   }
}
