/*
* TV-Browser
* Copyright (C) 04-2003 Martin Oberhauser (darras@users.sourceforge.net)
*
* 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.
*
* CVS information:
* $RCSfile$
* $Source$
* $Date: 2010-01-20 23:18:48 +0100 (Wed, 20 Jan 2010) $
* $Author: bananeweizen $
* $Revision: 6380 $
*/
package primarydatamanager.mirrorupdater.data;
import java.io.BufferedInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.text.NumberFormat;
import java.util.logging.Logger;
import primarydatamanager.mirrorupdater.UpdateException;
import util.io.IOUtilities;
/**
*
*
* @author Til Schneider, www.murfman.de
*/
public class FileDataSource implements DataSource {
private static final Logger mLog
= Logger.getLogger(FileDataSource.class.getName());
private File mDir;
private int mBytesRead;
private int mFilesChecked;
/**
* @param dir
*/
public FileDataSource(File dir) {
mDir = dir;
}
public boolean fileExists(String fileName) throws UpdateException {
mFilesChecked++;
File file = new File(mDir, fileName);
return file.exists();
}
public byte[] loadFile(String fileName) throws UpdateException {
File file = new File(mDir, fileName);
BufferedInputStream in = null;
try {
in = new BufferedInputStream(new FileInputStream(file), 0x4000);
ByteArrayOutputStream out = new ByteArrayOutputStream((int) file.length());
IOUtilities.pipeStreams(in, out);
out.close();
byte[] data = out.toByteArray();
mBytesRead += data.length;
return data;
}
catch (IOException exc) {
throw new UpdateException("Loading file failed: " + fileName, exc);
}
finally {
if (in != null) {
try { in.close(); } catch (IOException exc) {}
}
}
}
public void close() throws UpdateException {
mLog.info("In total there were "
+ NumberFormat.getInstance().format(mFilesChecked) + " files checked and "
+ NumberFormat.getInstance().format(mBytesRead) + " bytes read.");
}
}