public DatDatabase(string filePath, bool keepOpen = false)
{
if (!File.Exists(filePath))
{
throw new FileNotFoundException(filePath);
}
FilePath = filePath;
uint btree = 0;
stream = new FileStream(filePath, FileMode.Open, FileAccess.Read);
using (var reader = new BinaryReader(stream, System.Text.Encoding.Default, true)) {
if (DatManager.DatVersion == DatVersionType.ACTOD)
{
stream.Seek(DAT_HEADER_OFFSET_TOD, SeekOrigin.Begin);
Header.Unpack(reader);
if (Header.Success)
{
btree = Header.BTree;
Blocksize = Header.BlockSize;
}
}
else if (DatManager.DatVersion == DatVersionType.ACDM)
{
reader.BaseStream.Seek(DAT_HEADER_OFFSET_ACDM, SeekOrigin.Begin);
Header_ACDM.Unpack(reader);
if (Header_ACDM.Success)
{
btree = Header_ACDM.BTree;
Blocksize = Header_ACDM.BlockSize;
}
}
}
if (Blocksize > 0)
{
RootDirectory = new DatDirectory(btree, Blocksize);
RootDirectory.Read(stream);
RootDirectory.AddFilesToList(AllFiles);
}
if (!keepOpen)
{
stream.Close();
stream.Dispose();
stream = null;
}
}
public void Read(FileStream stream)
{
var headerReader = new DatReader(stream, rootSectorOffset, DatDirectoryHeader.ObjectSize, blockSize);
using (var memoryStream = new MemoryStream(headerReader.Buffer))
using (var reader = new BinaryReader(memoryStream))
DatDirectoryHeader.Unpack(reader);
// directory is allowed to have files + 1 subdirectories
if (DatDirectoryHeader.Branches[0] != 0)
{
for (int i = 0; i < DatDirectoryHeader.EntryCount + 1; i++)
{
var directory = new DatDirectory(DatDirectoryHeader.Branches[i], blockSize);
directory.Read(stream);
Directories.Add(directory);
}
}
}