public HfsPlusFileSystemImpl(Stream s) : base(new DiscFileSystemOptions()) { s.Position = 1024; byte[] headerBuf = Utilities.ReadFully(s, 512); VolumeHeader hdr = new VolumeHeader(); hdr.ReadFrom(headerBuf, 0); Context = new HfsPlus.Context(); Context.VolumeStream = s; Context.VolumeHeader = hdr; FileBuffer catalogBuffer = new FileBuffer(Context, hdr.CatalogFile); Context.Catalog = new BTree <CatalogKey>(catalogBuffer); // Establish Root directory byte[] rootThreadData = Context.Catalog.Find(new CatalogKey(CatalogNodeId.RootFolderId, string.Empty)); CatalogThread rootThread = new CatalogThread(); rootThread.ReadFrom(rootThreadData, 0); byte[] rootDirEntryData = Context.Catalog.Find(new CatalogKey(rootThread.ParentId, rootThread.Name)); DirEntry rootDirEntry = new DirEntry(rootThread.Name, rootDirEntryData); RootDirectory = (Directory)GetFile(rootDirEntry); }
internal static bool Detect(Stream stream) { if (stream.Length < 1536) { return(false); } stream.Position = 1024; byte[] headerBuf = Utilities.ReadFully(stream, 512); VolumeHeader hdr = new VolumeHeader(); hdr.ReadFrom(headerBuf, 0); return(hdr.IsValid); }