/*
* $Id$
*
* Copyright (C) 2003-2014 JNode.org
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
package org.jnode.fs.smbfs;
import java.io.IOException;
import java.nio.ByteBuffer;
import jcifs.smb.SmbFile;
import jcifs.smb.SmbRandomAccessFile;
import org.jnode.fs.FSFile;
/**
* @author Levente S\u00e1ntha
*/
public class SMBFSFile extends SMBFSEntry implements FSFile {
private static final int BUFFER_SIZE = 4 * 1024;
protected SMBFSFile(SMBFSDirectory parent, SmbFile smbFile) {
super(parent, smbFile);
}
/**
* @see org.jnode.fs.FSFile#flush()
*/
public void flush() throws IOException {
}
/**
* @see org.jnode.fs.FSFile#getLength()
*/
public long getLength() {
try {
return smbFile.length();
} catch (IOException e) {
throw new RuntimeException(e);
}
}
/**
* @see org.jnode.fs.FSFile#read(long, java.nio.ByteBuffer)
*/
public void read(long fileOffset, ByteBuffer dest) throws IOException {
if (fileOffset > smbFile.length())
return;
byte[] buf = new byte[BUFFER_SIZE];
SmbRandomAccessFile raf = new SmbRandomAccessFile(smbFile, "r");
raf.seek(fileOffset);
int bc;
int rem = dest.remaining();
while ((bc = raf.read(buf)) > 0 && rem > 0) {
dest.put(buf, 0, Math.min(bc, dest.remaining()));
rem = dest.remaining();
}
raf.close();
}
/**
* @see org.jnode.fs.FSFile#setLength(long)
*/
public void setLength(long length) throws IOException {
SmbRandomAccessFile raf = new SmbRandomAccessFile(smbFile, "rw");
raf.setLength(length);
raf.close();
}
/**
* @see org.jnode.fs.FSFile#write(long, java.nio.ByteBuffer)
*/
public void write(long fileOffset, ByteBuffer src) throws IOException {
SmbRandomAccessFile raf = new SmbRandomAccessFile(smbFile, "rw");
if (fileOffset > raf.length())
raf.setLength(fileOffset);
raf.seek(fileOffset);
byte[] buf = new byte[BUFFER_SIZE];
while (src.remaining() > 0) {
int bc = Math.min(BUFFER_SIZE, src.remaining());
src.get(buf, 0, bc);
raf.write(buf, 0, bc);
}
raf.close();
}
@Override
public String getId() {
return getName();
}
}