/*
* regain/Thumbnailer - A file search engine providing plenty of formats (Plugin)
* Copyright (C) 2011 Come_IN Computerclubs (University of Siegen)
*
* This library 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 library 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 library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Contact: Come_IN-Team <come_in-team@listserv.uni-siegen.de>
*/
package de.uni_siegen.wineme.come_in.thumbnailer.thumbnailers;
import java.io.BufferedInputStream;
import java.io.File;
import java.io.IOException;
import java.util.zip.ZipEntry;
import java.util.zip.ZipException;
import java.util.zip.ZipFile;
import de.uni_siegen.wineme.come_in.thumbnailer.ThumbnailerException;
import de.uni_siegen.wineme.come_in.thumbnailer.util.IOUtil;
import de.uni_siegen.wineme.come_in.thumbnailer.util.ResizeImage;
/**
* This class extracts Thumbnails from OpenOffice-Files.
*
* Depends:
* <li> <i>NOT</i> on OpenOffice, as the Thumbnail is already inside the file. (184x256px regardless of page orientation)
* (So if the thumbnail generation is not correct, it's OpenOffice's fault, not our's :-)
*
*/
public class OpenOfficeThumbnailer extends AbstractThumbnailer {
@Override
public void generateThumbnail(File input, File output) throws IOException, ThumbnailerException {
BufferedInputStream in = null;
ZipFile zipFile = null;
try {
zipFile = new ZipFile(input);
} catch (ZipException e) {
throw new ThumbnailerException("This is not a zipped file. Is this really an OpenOffice-File?", e);
}
try {
ZipEntry entry = zipFile.getEntry("Thumbnails/thumbnail.png");
if (entry == null)
throw new ThumbnailerException("Zip file does not contain 'Thumbnails/thumbnail.png' . Is this really an OpenOffice-File?");
in = new BufferedInputStream(zipFile.getInputStream(entry));
ResizeImage resizer = new ResizeImage(thumbWidth, thumbHeight);
resizer.setInputImage(in);
resizer.writeOutput(output);
in.close();
}
finally {
IOUtil.quietlyClose(in);
IOUtil.quietlyClose(zipFile);
}
}
/**
* Get a List of accepted File Types.
* All OpenOffice Formats are accepted.
*
* @return MIME-Types
*/
public String[] getAcceptedMIMETypes()
{
return new String[] {
"application/vnd.sun.xml.writer",
"application/vnd.sun.xml.writer.template",
"application/vnd.sun.xml.writer.global",
"application/vnd.sun.xml.calc",
"application/vnd.sun.xml.calc.template",
"application/vnd.stardivision.calc",
"application/vnd.sun.xml.impress",
"application/vnd.sun.xml.impress.template ",
"application/vnd.stardivision.impress sdd",
"application/vnd.sun.xml.draw",
"application/vnd.sun.xml.draw.template",
"application/vnd.stardivision.draw",
"application/vnd.sun.xml.math",
"application/vnd.stardivision.math",
"application/vnd.oasis.opendocument.text",
"application/vnd.oasis.opendocument.text-template",
"application/vnd.oasis.opendocument.text-web",
"application/vnd.oasis.opendocument.text-master",
"application/vnd.oasis.opendocument.graphics",
"application/vnd.oasis.opendocument.graphics-template",
"application/vnd.oasis.opendocument.presentation",
"application/vnd.oasis.opendocument.presentation-template",
"application/vnd.oasis.opendocument.spreadsheet",
"application/vnd.oasis.opendocument.spreadsheet-template",
"application/vnd.oasis.opendocument.chart",
"application/vnd.oasis.opendocument.formula",
"application/vnd.oasis.opendocument.database",
"application/vnd.oasis.opendocument.image",
"application/zip" /* Could be an OpenOffice file! */
};
}
}