/// <summary>
/// Writes three volume descriptors speciffic to the ISO 9660 Joliet:
/// 1. Primary volume descriptor;
/// 2. Suplementary volume descriptor;
/// 3. Volume descriptor set terminator.
/// </summary>
/// <param name="writer">A binary writer to write the data.</param>
/// <param name="volumeName">A normal string representing the desired name of the volume.
/// (the maximum standard length for this string is 16 for Joliet, so if the name is larger
/// than 16 characters, it is truncated.)</param>
/// <param name="root">The root IsoDirectory, representing the root directory for the volume.</param>
/// <param name="volumeSpaceSize">The ISO total space size IN SECTORS.
/// (For example, if the ISO space size is 1,427,456 bytes, then the volumeSpaceSize will be 697)</param>
/// <param name="pathTableSize1">The first path table size (for the primary volume) IN BYTES.</param>
/// <param name="pathTableSize2">The second path table size (for the suplementary volume) IN BYTES.</param>
/// <param name="typeLPathTable1">The location (sector) of the first LITTLE ENDIAN path table.</param>
/// <param name="typeMPathTable1">The location (sector) of the first BIG ENDIAN path table.</param>
/// <param name="typeLPathTable2">The location (sector) of the second LITTLE ENDIAN path table.</param>
/// <param name="typeMPathTable2">The location (sector) of the second BIG ENDIAN path table.</param>
private void WriteVolumeDescriptors(BinaryWriter writer,
string volumeName,
IsoDirectory root,
UInt32 volumeSpaceSize,
UInt32 pathTableSize1, UInt32 pathTableSize2,
UInt32 typeLPathTable1, UInt32 typeMPathTable1,
UInt32 typeLPathTable2, UInt32 typeMPathTable2)
{
// Throughout this program I have respected the convention of refering to the root as ".";
// However, one should not confuse the root with the current directory, also known as "." (along with the parent directory, "..").
// Primary Volume Descriptor:
// Create a Directory Record of the root and the volume descriptor.
DirectoryRecordWrapper rootRecord = new DirectoryRecordWrapper(root.Extent1, root.Size1, root.Date, root.IsDirectory, ".");
VolumeDescriptorWrapper volumeDescriptor = new VolumeDescriptorWrapper(volumeName, volumeSpaceSize, pathTableSize1, typeLPathTable1, typeMPathTable1, rootRecord, DateTime.Now, DateTime.Now, 8);
volumeDescriptor.VolumeDescriptorType = VolumeType.Primary;
volumeDescriptor.Write(writer);
// Suplementary volume descriptor:
rootRecord = new DirectoryRecordWrapper(root.Extent2, root.Size2, root.Date, root.IsDirectory, ".");
volumeDescriptor = new VolumeDescriptorWrapper(volumeName, volumeSpaceSize, pathTableSize2, typeLPathTable2, typeMPathTable2, rootRecord, DateTime.Now, DateTime.Now, 8);
volumeDescriptor.VolumeDescriptorType = VolumeType.Suplementary;
volumeDescriptor.Write(writer);
// Volume descriptor set terminator:
volumeDescriptor.VolumeDescriptorType = VolumeType.SetTerminator;
volumeDescriptor.Write(writer);
}
public void Write(BinaryWriter writer, VolumeType type)
{
DirectoryRecordWrapper record;
UInt32 extent = (type == VolumeType.Primary) ? Extent1 : Extent2;
UInt32 size = (type == VolumeType.Primary) ? Size1 : Size2;
UInt32 parentExtent = (type == VolumeType.Primary) ? Parent.Extent1 : Parent.Extent2;
UInt32 parentSize = (type == VolumeType.Primary) ? Parent.Size1 : Parent.Size2;
// First write the current directory and the parent. ("." and "..")
record = new DirectoryRecordWrapper(extent, size, Date, IsDirectory, ".");
record.Write(writer);
record = new DirectoryRecordWrapper(parentExtent, parentSize, Parent.Date, Parent.IsDirectory, "..");
record.Write(writer);
// Everything else is written after the first two sectors (current dir and parent).
int position = 2 * IsoAlgorithm.DefaultDirectoryRecordLength;
foreach (IsoFolderElement child in Children)
{
UInt32 childExtent = (type == VolumeType.Primary) ? child.Extent1 : child.Extent2;
UInt32 childSize = (type == VolumeType.Primary) ? child.Size1 : child.Size2;
string childName = (type == VolumeType.Primary) ? child.ShortName : child.LongName;
record = new DirectoryRecordWrapper(childExtent, childSize, child.Date, child.IsDirectory, childName)
{
VolumeDescriptorType = type
};
if (record.Length + position > IsoAlgorithm.SectorSize)
{
writer.Write(new byte[IsoAlgorithm.SectorSize - position]);
position = 0;
}
position += record.Write(writer);
}
writer.Write(new byte[IsoAlgorithm.SectorSize - position]);
}
public void WriteDemoImage(BinaryWriter writer)
{
int currentSector;
for (currentSector = 0; currentSector < 16; currentSector++)
{
IsoAlgorithm.WriteEmptySector(writer);
}
DirectoryRecordWrapper rootDir = new DirectoryRecordWrapper(19, IsoAlgorithm.SectorSize, DateTime.Now, true, ".");
VolumeDescriptorWrapper volumeDescriptor = new VolumeDescriptorWrapper("EPURASU", 28, 26, 21, 22, rootDir, DateTime.Now, DateTime.Now.Subtract(TimeSpan.FromDays(2)), 8);
//rootDir.SetDirectoryRecord( 19, ISO9660.SectorSize, DateTime.Now, true, "." );
// [ Sect 16 ] Primary volume descriptor
volumeDescriptor.VolumeDescriptorType = VolumeType.Primary;
// volumeDescriptor.SetVolumeDescriptor( "EPURASU", 28, 26, 21, 22, rootDir, DateTime.Now, DateTime.Now.Subtract( TimeSpan.FromDays( 2 ) ), 8 );
volumeDescriptor.Write(writer);
// [ Sect 17 ] Suplementary volume descriptor (in care scriem cu unicode)
rootDir.SetDirectoryRecord(23, IsoAlgorithm.SectorSize, DateTime.Now, true, ".");
volumeDescriptor.VolumeDescriptorType = VolumeType.Suplementary;
volumeDescriptor.SetVolumeDescriptor("Epurasu", 28, 38, 25, 26, rootDir, DateTime.Now, DateTime.Now.Subtract(TimeSpan.FromDays(2)), 8);
volumeDescriptor.Write(writer);
// [ Sect 18 ] Volume descriptor set termnator
volumeDescriptor.VolumeDescriptorType = VolumeType.SetTerminator;
volumeDescriptor.Write(writer);
// [ Sect 19 ] Continutul directorului radacina:
// Directorul curent: "."
rootDir.SetDirectoryRecord(19, IsoAlgorithm.SectorSize, DateTime.Now, true, ".");
rootDir.Write(writer);
// Directorul parinte: "..". Fiind vorba de radacina, directorul parinte e o referinta la directorul curent.
rootDir.SetDirectoryRecord(19, IsoAlgorithm.SectorSize, DateTime.Now, true, "..");
rootDir.Write(writer);
// Director copil: "Director"
DirectoryRecordWrapper childDir = new DirectoryRecordWrapper(20, IsoAlgorithm.SectorSize, DateTime.Now, true, "DIRECTOR");
//childDir.SetDirectoryRecord( 20, ISO9660.SectorSize, DateTime.Now, true, "DIRECTOR" );
int bytesWritten = childDir.Write(writer);
writer.Write(new byte[2048 - 34 - 34 - bytesWritten]);
// [ Sect 20 ] Continutul directorului "Director"
childDir.SetDirectoryRecord(20, IsoAlgorithm.SectorSize, DateTime.Now, true, ".");
childDir.Write(writer);
childDir.SetDirectoryRecord(19, IsoAlgorithm.SectorSize, DateTime.Now, true, "..");
childDir.Write(writer);
childDir.SetDirectoryRecord(27, 45, DateTime.Now, false, "NUMELEFI.TXT");
bytesWritten = childDir.Write(writer);
writer.Write(new byte[2048 - 34 - 34 - bytesWritten]);
// [ Sect 21 ] Pathtable pt little endian
// Root:
PathTableRecordWrapper record = new PathTableRecordWrapper();
record.Endian = Endian.LittleEndian;
record.SetPathTableRecord(19, 1, ".");
bytesWritten = record.Write(writer);
// "Director":
record.SetPathTableRecord(20, 1, "DIRECTOR");
bytesWritten += record.Write(writer);
writer.Write(new byte[2048 - bytesWritten]);
// [ Sect 22 ] Pathtable pt big endian
// Root:
record = new PathTableRecordWrapper();
record.Endian = Endian.BigEndian;
record.SetPathTableRecord(19, 1, ".");
record.Write(writer);
// "Director":
record.SetPathTableRecord(20, 1, "DIRECTOR");
record.Write(writer);
writer.Write(new byte[2048 - bytesWritten]);
// [ Sect 23 ] Continutul directorului radacina:
rootDir.VolumeDescriptorType = VolumeType.Suplementary;
// Directorul curent: "."
rootDir.SetDirectoryRecord(23, IsoAlgorithm.SectorSize, DateTime.Now, true, ".");
rootDir.Write(writer);
// Directorul parinte: "..". Fiind vorba de radacina, directorul parinte e o referinta la directorul curent.
rootDir.SetDirectoryRecord(23, IsoAlgorithm.SectorSize, DateTime.Now, true, "..");
rootDir.Write(writer);
// Director copil: "Director"
childDir = new DirectoryRecordWrapper(24, IsoAlgorithm.SectorSize, DateTime.Now, true, "Directorul");
//childDir.SetDirectoryRecord( 24, ISO9660.SectorSize, DateTime.Now, true, "Directorul" );
childDir.VolumeDescriptorType = VolumeType.Suplementary;
bytesWritten = childDir.Write(writer);
writer.Write(new byte[2048 - 34 - 34 - bytesWritten]);
// [ Sect 24 ] Continutul directorului "Director"
childDir.SetDirectoryRecord(24, IsoAlgorithm.SectorSize, DateTime.Now, true, ".");
childDir.Write(writer);
childDir.SetDirectoryRecord(23, IsoAlgorithm.SectorSize, DateTime.Now, true, "..");
childDir.Write(writer);
childDir.SetDirectoryRecord(27, 45, DateTime.Now, false, "numeleFisierului.txt");
bytesWritten = childDir.Write(writer);
writer.Write(new byte[2048 - 34 - 34 - bytesWritten]);
// [ Sect 25 ] Pathtable pt little endian
// Root:
record = new PathTableRecordWrapper();
record.Endian = Endian.LittleEndian;
record.VolumeDescriptorType = VolumeType.Suplementary;
record.SetPathTableRecord(23, 1, ".");
bytesWritten = record.Write(writer);
// "Director":
record.SetPathTableRecord(24, 1, "Directorul");
bytesWritten += record.Write(writer);
writer.Write(new byte[2048 - bytesWritten]);
// [ Sect 26 ] Pathtable pt big endian
// Root:
record = new PathTableRecordWrapper();
record.Endian = Endian.BigEndian;
record.VolumeDescriptorType = VolumeType.Suplementary;
record.SetPathTableRecord(23, 1, ".");
record.Write(writer);
// "Director":
record.SetPathTableRecord(24, 1, "Directorul");
record.Write(writer);
writer.Write(new byte[2048 - bytesWritten]);
// [ Sect 27 ] Continutul fisierului (45 B):
writer.Write(IsoAlgorithm.StringToByteArray("Catelus cu parul cretz fura ratza din cotetz."));
writer.Write(new byte[2048 - 45]);
}
