/*
* 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.document.impl;
import org.apache.poi.hpsf.MarkUnsupportedException;
import org.apache.poi.hpsf.NoPropertySetStreamException;
import org.apache.poi.hpsf.PropertySet;
import org.apache.poi.hpsf.PropertySetFactory;
import org.apache.poi.hpsf.SummaryInformation;
import org.apache.poi.poifs.eventfilesystem.POIFSReader;
import org.apache.poi.poifs.eventfilesystem.POIFSReaderEvent;
import org.apache.poi.poifs.eventfilesystem.POIFSReaderListener;
import org.exoplatform.services.document.DCMetaData;
import org.exoplatform.services.document.DocumentReadException;
import java.io.IOException;
import java.io.InputStream;
import java.io.UnsupportedEncodingException;
import java.util.Properties;
/**
* Created by The eXo Platform SAS .
*
* @author Gennady Azarenkov
* @version $Id: $
*/
public class POIPropertiesReader
{
private final Properties props = new Properties();
public Properties getProperties()
{
return props;
}
public Properties readDCProperties(InputStream is) throws IOException, DocumentReadException
{
if (is == null)
{
throw new NullPointerException("InputStream is null.");
}
@SuppressWarnings("serial")
class POIRuntimeException extends RuntimeException
{
private Throwable ex;
public POIRuntimeException(Throwable ex)
{
this.ex = ex;
}
public Throwable getException()
{
return ex;
}
}
POIFSReaderListener readerListener = new POIFSReaderListener()
{
public void processPOIFSReaderEvent(final POIFSReaderEvent event)
{
PropertySet ps;
try
{
ps = PropertySetFactory.create(event.getStream());
if (ps instanceof SummaryInformation)
{
SummaryInformation si = (SummaryInformation)ps;
if (si.getLastAuthor() != null && si.getLastAuthor().length() > 0)
props.put(DCMetaData.CONTRIBUTOR, si.getLastAuthor());
if (si.getComments() != null && si.getComments().length() > 0)
props.put(DCMetaData.DESCRIPTION, si.getComments());
if (si.getCreateDateTime() != null)
props.put(DCMetaData.DATE, si.getCreateDateTime());
if (si.getAuthor() != null && si.getAuthor().length() > 0)
props.put(DCMetaData.CREATOR, si.getAuthor());
if (si.getKeywords() != null && si.getKeywords().length() > 0)
props.put(DCMetaData.SUBJECT, si.getKeywords());
if (si.getLastSaveDateTime() != null)
props.put(DCMetaData.DATE, si.getLastSaveDateTime());
// if(docInfo.getProducer() != null)
// props.put(DCMetaData.PUBLISHER, docInfo.getProducer());
if (si.getSubject() != null && si.getSubject().length() > 0)
props.put(DCMetaData.SUBJECT, si.getSubject());
if (si.getTitle() != null && si.getTitle().length() > 0)
props.put(DCMetaData.TITLE, si.getTitle());
}
}
catch (NoPropertySetStreamException e)
{
throw new POIRuntimeException(new DocumentReadException(e.getMessage(), e));
}
catch (MarkUnsupportedException e)
{
throw new POIRuntimeException(new DocumentReadException(e.getMessage(), e));
}
catch (UnsupportedEncodingException e)
{
throw new POIRuntimeException(new DocumentReadException(e.getMessage(), e));
}
catch (IOException e)
{
throw new POIRuntimeException(e);
}
}
};
try
{
POIFSReader poiFSReader = new POIFSReader();
poiFSReader.registerListener(readerListener, SummaryInformation.DEFAULT_STREAM_NAME);
poiFSReader.read(is);
}
catch (POIRuntimeException e)
{
Throwable ex = e.getException();
if (ex instanceof IOException)
{
throw (IOException)ex;
}
else
{
throw (DocumentReadException)ex;
}
}
finally
{
if (is != null)
{
try
{
is.close();
}
catch (IOException e)
{
}
}
}
return props;
}
}