/*
* This program is free software; you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
* Foundation.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
* or from the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* This program 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.
*
* Copyright (c) 2006 - 2013 Pentaho Corporation and Contributors.  All rights reserved.
*/

package org.pentaho.reporting.libraries.fonts.encoding;

import org.pentaho.reporting.libraries.resourceloader.Resource;
import org.pentaho.reporting.libraries.resourceloader.ResourceCreationException;
import org.pentaho.reporting.libraries.resourceloader.ResourceData;
import org.pentaho.reporting.libraries.resourceloader.ResourceFactory;
import org.pentaho.reporting.libraries.resourceloader.ResourceKey;
import org.pentaho.reporting.libraries.resourceloader.ResourceLoadingException;
import org.pentaho.reporting.libraries.resourceloader.ResourceManager;
import org.pentaho.reporting.libraries.resourceloader.SimpleResource;

import java.io.IOException;
import java.io.InputStream;
import java.io.ObjectInputStream;

/**
 * Creation-Date: 29.04.2006, 14:32:15
 *
 * @author Thomas Morgner
 */
public class EncodingFactory implements ResourceFactory {
  public EncodingFactory() {
  }

  public Resource create( final ResourceManager manager,
                          final ResourceData data,
                          final ResourceKey context )
    throws ResourceCreationException, ResourceLoadingException {
    try {
      final InputStream in = data.getResourceAsStream( manager );
      final ObjectInputStream oin = new ObjectInputStream( in );
      try {
        final Object ob = oin.readObject();
        // yes, that will be more generic in the future ...
        if ( ob instanceof External8BitEncodingData == false ) {
          throw new ResourceCreationException( "This is no 8Bit Encoding data" );
        }
        final External8BitEncodingData encData = (External8BitEncodingData) ob;
        final External8BitEncodingCore encCore =
          new External8BitEncodingCore( encData );
        return new SimpleResource( data.getKey(), encCore, getFactoryType(), data.getVersion( manager ) );
      } finally {
        oin.close();
      }
    } catch ( IOException e ) {
      throw new ResourceLoadingException( "Failed to load resource", e );
    } catch ( ClassNotFoundException e ) {
      throw new ResourceCreationException
        ( "Missing class definition: Failed to create encoding." );
    }
  }

  public Class getFactoryType() {
    return Encoding.class;
  }

  public void initializeDefaults() {
    // do nothing -- yet ..
  }
}