/// <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 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] ); }