internal CompoundDocument(Stream stream, FileHeader header) { this.FileStorage = stream; this.Reader = new BinaryReader(this.FileStorage); if (stream.CanWrite) { this.Writer = new BinaryWriter(this.FileStorage, Encoding.Unicode); } this.Header = header; this.SectorSize = (int)Math.Pow(2, Header.SectorSizeInPot); this.ShortSectorSize = (int)Math.Pow(2, Header.ShortSectorSizeInPot); this.TotalSectors = stream.Length == 0 ? 0 : (int)(stream.Length - 512) / this.SectorSize; this.MasterSectorAllocation = new MasterSectorAllocation(this); this.SectorAllocation = new SectorAllocation(this); this.ShortSectorAllocation = new ShortSectorAllocation(this); }