com.github.stephenc.javaisotools.iso9660.volumedescriptors.PrimaryVolumeDescriptor Maven / Gradle / Ivy

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/*
 * Copyright (c) 2010. Stephen Connolly.
 * Copyright (C) 2007. Jens Hatlak 
 *
 * 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.iso9660.volumedescriptors;

import java.util.HashMap;

import com.github.stephenc.javaisotools.iso9660.impl.ISO9660Constants;
import com.github.stephenc.javaisotools.sabre.Fixup;
import com.github.stephenc.javaisotools.sabre.StreamHandler;
import com.github.stephenc.javaisotools.sabre.impl.ThreeByteDataReference;
import com.github.stephenc.javaisotools.iso9660.LayoutHelper;
import com.github.stephenc.javaisotools.sabre.HandlerException;
import com.github.stephenc.javaisotools.sabre.impl.ByteDataReference;

public class PrimaryVolumeDescriptor extends StandardVolumeDescriptor {

    public PrimaryVolumeDescriptor(StreamHandler streamHandler, LayoutHelper helper) {
        super(streamHandler, ISO9660Constants.PVD_TYPE, helper);
    }

    public HashMap doPVD() throws HandlerException {
        HashMap memory = doStandardVD();

        // Set Volume Flags to 0 (Unused Field)
        Fixup volumeFlags = (Fixup) memory.get("volumeFlagsFixup");
        volumeFlags.data(new ByteDataReference(0));
        volumeFlags.close();
        memory.remove("volumeFlagsFixup");

        // Set Escape Sequences to all 0 (Unused Field)
        Fixup escapeSequences = (Fixup) memory.get("escapeSequencesFixup");
        escapeSequences.data(new ThreeByteDataReference(0));
        escapeSequences.close();
        memory.remove("escapeSequencesFixup");

        return memory;
    }
}