com.github.stephenc.javaisotools.udflib.structures.LogicalVolumeHeaderDescriptor Maven / Gradle / Ivy

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/*
 * Copyright (c) 2010. Stephen Connolly.
 * Copyright (c) 2006. Björn Stickler .
 *
 * 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 com.github.stephenc.javaisotools.udflib.structures;

import java.io.IOException;
import java.io.RandomAccessFile;

import com.github.stephenc.javaisotools.udflib.tools.BinaryTools;

public class LogicalVolumeHeaderDescriptor {

    public long UniqueID;        // Uint64 !
    public byte Reserved[];        // byte[24]

    public LogicalVolumeHeaderDescriptor() {
        Reserved = new byte[24];
    }

    public void read(RandomAccessFile myRandomAccessFile)
            throws IOException {
        UniqueID = BinaryTools.readUInt64AsLong(myRandomAccessFile);

        Reserved = new byte[24];
        myRandomAccessFile.read(Reserved);
    }

    public void write(RandomAccessFile myRandomAccessFile)
            throws IOException {
        byte[] rawBytes = getBytes();
        myRandomAccessFile.write(rawBytes);
    }

    public byte[] getBytes() {
        byte[] rawBytes = new byte[8 + Reserved.length];

        int pos = 0;

        pos = BinaryTools.getUInt64BytesFromLong(UniqueID, rawBytes, pos);

        System.arraycopy(Reserved, 0, rawBytes, pos, Reserved.length);
        pos += Reserved.length;

        return rawBytes;
    }
}