/*
* $Id$
*
* 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.iso9660;
import java.io.IOException;
import java.util.Iterator;
import org.jnode.fs.FSDirectory;
import org.jnode.fs.FSEntry;
import org.jnode.fs.FileSystem;
import org.jnode.fs.ReadOnlyFileSystemException;
import org.jnode.util.LittleEndian;
/**
* @author Chira
* @author Ewout Prangsma (epr@users.sourceforge.net)
*/
public final class ISO9660Directory implements FSDirectory {
private final ISO9660Entry entry;
/**
* @param entry
*/
public ISO9660Directory(ISO9660Entry entry) {
this.entry = entry;
}
/**
* @see org.jnode.fs.FSDirectory#iterator()
*/
public Iterator<FSEntry> iterator() throws IOException {
return new Iterator<FSEntry>() {
int offset = 0;
final EntryRecord parent = ISO9660Directory.this.entry.getCDFSentry();
final byte[] buffer = parent.getExtentData();
public boolean hasNext() {
return ((offset < buffer.length) && LittleEndian.getUInt8(buffer, offset) > 0);
}
public FSEntry next() {
final ISO9660Volume volume = parent.getVolume();
final EntryRecord fEntry =
new EntryRecord(volume, buffer, offset + 1, parent.getEncoding());
offset += fEntry.getLengthOfDirectoryEntry();
return new ISO9660Entry((ISO9660FileSystem) entry.getFileSystem(), fEntry);
}
/**
* @see java.util.Iterator#remove()
*/
public void remove() {
throw new UnsupportedOperationException();
}
};
}
/**
* @see org.jnode.fs.FSDirectory#getEntry(java.lang.String)
*/
public FSEntry getEntry(String name) throws IOException {
for (Iterator<FSEntry> it = this.iterator(); it.hasNext(); ) {
ISO9660Entry entry = (ISO9660Entry) it.next();
if (entry.getName().equalsIgnoreCase(name))
return entry;
}
return null;
}
@Override
public FSEntry getEntryById(String id) throws IOException {
return getEntry(id);
}
/**
* @see org.jnode.fs.FSDirectory#addFile(java.lang.String)
*/
public FSEntry addFile(String name) throws IOException {
throw new ReadOnlyFileSystemException();
}
/**
* @see org.jnode.fs.FSDirectory#addDirectory(java.lang.String)
*/
public FSEntry addDirectory(String name) throws IOException {
throw new ReadOnlyFileSystemException();
}
/**
* @see org.jnode.fs.FSDirectory#remove(java.lang.String)
*/
public void remove(String name) throws IOException {
throw new ReadOnlyFileSystemException();
}
/**
* @see org.jnode.fs.FSObject#isValid()
*/
public final boolean isValid() {
return true;
}
/**
* @see org.jnode.fs.FSObject#getFileSystem()
*/
public final FileSystem<?> getFileSystem() {
return entry.getFileSystem();
}
/**
* Save all dirty (unsaved) data to the device
*
* @throws IOException
*/
public void flush() throws IOException {
// TODO implement
}
}