de.ilias.services.lucene.index.file.PDFBoxPDFHandler.java Source code

Introduction

Here is the source code for de.ilias.services.lucene.index.file.PDFBoxPDFHandler.java

Source

/*
    +-----------------------------------------------------------------------------+
    | ILIAS open source                                                           |
    +-----------------------------------------------------------------------------+
    | Copyright (c) 1998-2001 ILIAS open source, University of Cologne            |
    |                                                                             |
    | This program 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 2              |
    | of the License, or (at your option) any later version.                      |
    |                                                                             |
    | 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 General Public License for more details.                                |
    |                                                                             |
    | You should have received a copy of the GNU General Public License           |
    | along with this program; if not, write to the Free Software                 |
    | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA. |
    +-----------------------------------------------------------------------------+
*/

package de.ilias.services.lucene.index.file;

import java.io.IOException;
import java.io.InputStream;
import java.io.StringWriter;
import java.util.logging.Level;

import org.apache.log4j.Logger;
import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.util.PDFTextStripper;

/**
 * 
 *
 * @author Stefan Meyer <smeyer.ilias@gmx.de>
 * @version $Id$
 */
public class PDFBoxPDFHandler implements FileHandler {

    protected Logger logger = Logger.getLogger(PDFBoxPDFHandler.class);

    /**
     * @throws IOException 
     * @see de.ilias.services.lucene.index.file.FileHandler#getContent(java.io.InputStream)
     */
    public String getContent(InputStream is) throws FileHandlerException {

        PDDocument pddo = null;
        PDFTextStripper stripper = null;
        String str = new String("");

        try {

            pddo = PDDocument.load(is);

            if (pddo.isEncrypted()) {
                logger.warn("PDF Document is encrypted. Trying empty password...");
                return "";
            }
            stripper = new PDFTextStripper();
            str = stripper.getText(pddo);
        } catch (NumberFormatException e) {
            logger.warn("Invalid PDF version number given. Aborting");
        } catch (IOException e) {
            logger.warn(e.getMessage());
            throw new FileHandlerException(e);
        } catch (Exception e) {
            logger.error(e.getMessage());
            throw new FileHandlerException(e);
        } finally {
            try {
                if (pddo != null)
                    pddo.close();
            } catch (IOException e) {
                ;
            }
        }
        return str;
    }

    /**
     * @see de.ilias.services.lucene.index.file.FileHandler#transformStream(java.io.InputStream)
     */
    public InputStream transformStream(InputStream is) {
        // TODO Auto-generated method stub
        return null;
    }

}