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

Go to download
Show more of this group Show more artifacts with this name
Show all versions of sabre Show documentation
The newest version!
/*
 * 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;
import com.github.stephenc.javaisotools.udflib.tools.OSTAUnicode;

public class PrimaryVolumeDescriptor extends VolumeDescriptorSequenceItem {

    public long PrimaryVolumeDescriptorNumber;                    // Uint32
    public byte VolumeIdentifier[];                                // dstring[32]
    public int VolumeSequenceNumber;                            // Uint16
    public int MaximumVolumeSequenceNumber;                    // Uint16
    public int InterchangeLevel;                                // Uint16
    public int MaximumInterchangeLevel;                        // Uint16
    public long CharacterSetList;                                // Uint32
    public long MaximumCharacterSetList;                        // Uint32
    public byte VolumeSetIdentifier[];                            // dstring[128]
    public CharSpec DescriptorCharacterSet;                            // struct charspec
    public CharSpec ExplanatoryCharacterSet;                        // struct charspec
    public Extend_ad VolumeAbstract;                                    // struct extent_ad
    public Extend_ad VolumeCopyrightNotice;                            // struct extent_ad
    public EntityID ApplicationIdentifier;                            // struct EntityID
    public Timestamp RecordingDateandTime;                            // struct timestamp
    public EntityID ImplementationIdentifier;                        // struct EntityID
    public byte ImplementationUse[];                            // byte[64]
    public long PredecessorVolumeDescriptorSequenceLocation;    // Uint32
    public int Flags;                                            // Uint16
    public byte Reserved[];                                        // byte[22]

    public PrimaryVolumeDescriptor() {
        DescriptorTag = new Tag();
        DescriptorTag.TagIdentifier = 1;

        VolumeIdentifier = new byte[32];
        VolumeSetIdentifier = new byte[128];

        DescriptorCharacterSet = new CharSpec();
        ExplanatoryCharacterSet = new CharSpec();

        VolumeAbstract = new Extend_ad();
        VolumeCopyrightNotice = new Extend_ad();

        ApplicationIdentifier = new EntityID();

        RecordingDateandTime = new Timestamp();

        ImplementationIdentifier = new EntityID();

        ImplementationUse = new byte[64];

        Reserved = new byte[22];
    }

    public void setVolumeIdentifier(String volumeIdentifier)
            throws Exception {
        if (volumeIdentifier.length() > 30) {
            throw new Exception("error: volume identifier length > 30 characters");
        }

        VolumeIdentifier = new byte[32];

        try {
            byte volumeIdentifierBytes[] = volumeIdentifier.getBytes("UTF-16");

            int compId = OSTAUnicode.getBestCompressionId(volumeIdentifierBytes);

            byte tmpIdentifier[] = OSTAUnicode.CompressUnicodeByte(volumeIdentifierBytes, compId);

            int length = (tmpIdentifier.length < 31) ? tmpIdentifier.length : 31;

            System.arraycopy(tmpIdentifier, 0, VolumeIdentifier, 0, length);

            VolumeIdentifier[VolumeIdentifier.length - 1] = (byte) length;
        }
        catch (Exception ex) { /* never happens */ }
    }

    public void setVolumeSetIdentifier(String volumeSetIdentifier)
            throws Exception {
        if (volumeSetIdentifier.length() > 126) {
            throw new Exception("error: volume set identifier length > 126 characters");
        }

        VolumeSetIdentifier = new byte[128];

        try {
            byte volumeSetIdentifierBytes[] = volumeSetIdentifier.getBytes("UTF-16");

            int compId = OSTAUnicode.getBestCompressionId(volumeSetIdentifierBytes);

            byte[] tmpIdentifier = OSTAUnicode.CompressUnicodeByte(volumeSetIdentifierBytes, compId);

            int length = (tmpIdentifier.length < 127) ? tmpIdentifier.length : 127;

            System.arraycopy(tmpIdentifier, 0, VolumeSetIdentifier, 0, length);

            VolumeSetIdentifier[VolumeSetIdentifier.length - 1] = (byte) length;
        }
        catch (Exception ex) { /* never happens */ }
    }

    public void read(RandomAccessFile myRandomAccessFile)
            throws IOException {
        DescriptorTag = new Tag();
        DescriptorTag.read(myRandomAccessFile);

        VolumeDescriptorSequenceNumber = BinaryTools.readUInt32AsLong(myRandomAccessFile);
        PrimaryVolumeDescriptorNumber = BinaryTools.readUInt32AsLong(myRandomAccessFile);

        VolumeIdentifier = new byte[32];
        myRandomAccessFile.read(VolumeIdentifier);

        VolumeSequenceNumber = BinaryTools.readUInt16AsInt(myRandomAccessFile);
        MaximumVolumeSequenceNumber = BinaryTools.readUInt16AsInt(myRandomAccessFile);
        InterchangeLevel = BinaryTools.readUInt16AsInt(myRandomAccessFile);
        MaximumInterchangeLevel = BinaryTools.readUInt16AsInt(myRandomAccessFile);
        CharacterSetList = BinaryTools.readUInt32AsLong(myRandomAccessFile);
        MaximumCharacterSetList = BinaryTools.readUInt32AsLong(myRandomAccessFile);

        VolumeSetIdentifier = new byte[128];
        myRandomAccessFile.read(VolumeSetIdentifier);

        DescriptorCharacterSet = new CharSpec();
        DescriptorCharacterSet.read(myRandomAccessFile);

        ExplanatoryCharacterSet = new CharSpec();
        ExplanatoryCharacterSet.read(myRandomAccessFile);

        VolumeAbstract = new Extend_ad();
        VolumeAbstract.read(myRandomAccessFile);

        VolumeCopyrightNotice = new Extend_ad();
        VolumeCopyrightNotice.read(myRandomAccessFile);

        ApplicationIdentifier = new EntityID();
        ApplicationIdentifier.read(myRandomAccessFile);

        RecordingDateandTime = new Timestamp();
        RecordingDateandTime.read(myRandomAccessFile);

        ImplementationIdentifier = new EntityID();
        ImplementationIdentifier.read(myRandomAccessFile);

        ImplementationUse = new byte[64];
        myRandomAccessFile.read(ImplementationUse);

        PredecessorVolumeDescriptorSequenceLocation = BinaryTools.readUInt32AsLong(myRandomAccessFile);

        Flags = BinaryTools.readUInt16AsInt(myRandomAccessFile);

        Reserved = new byte[22];
        myRandomAccessFile.read(Reserved);
    }

    public byte[] getBytesWithoutDescriptorTag() {
        byte DescriptorCharacterSetBytes[] = DescriptorCharacterSet.getBytes();
        byte ExplanatoryCharacterSetBytes[] = ExplanatoryCharacterSet.getBytes();
        byte VolumeAbstractBytes[] = VolumeAbstract.getBytes();
        byte VolumeCopyrightNoticeBytes[] = VolumeCopyrightNotice.getBytes();
        byte ApplicationIdentifierBytes[] = ApplicationIdentifier.getBytes();
        byte RecordingDateandTimeBytes[] = RecordingDateandTime.getBytes();
        byte ImplementationIdentifierBytes[] = ImplementationIdentifier.getBytes();

        byte rawBytes[] = new byte[276
                + DescriptorCharacterSetBytes.length
                + ExplanatoryCharacterSetBytes.length
                + VolumeAbstractBytes.length
                + VolumeCopyrightNoticeBytes.length
                + ApplicationIdentifierBytes.length
                + RecordingDateandTimeBytes.length
                + ImplementationIdentifierBytes.length];

        int pos = 0;

        pos = BinaryTools.getUInt32BytesFromLong(VolumeDescriptorSequenceNumber, rawBytes, pos);
        pos = BinaryTools.getUInt32BytesFromLong(PrimaryVolumeDescriptorNumber, rawBytes, pos);

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

        pos = BinaryTools.getUInt16BytesFromInt(VolumeSequenceNumber, rawBytes, pos);
        pos = BinaryTools.getUInt16BytesFromInt(MaximumVolumeSequenceNumber, rawBytes, pos);
        pos = BinaryTools.getUInt16BytesFromInt(InterchangeLevel, rawBytes, pos);
        pos = BinaryTools.getUInt16BytesFromInt(MaximumInterchangeLevel, rawBytes, pos);
        pos = BinaryTools.getUInt32BytesFromLong(CharacterSetList, rawBytes, pos);
        pos = BinaryTools.getUInt32BytesFromLong(MaximumCharacterSetList, rawBytes, pos);

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

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

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

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

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

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

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

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

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

        pos = BinaryTools.getUInt32BytesFromLong(PredecessorVolumeDescriptorSequenceLocation, rawBytes, pos);
        pos = BinaryTools.getUInt16BytesFromInt(Flags, rawBytes, pos);

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

        return rawBytes;
    }

}