protected override void ReadContent(ByteReader reader) { var info = reader.ReadString(HEADER_INFO.Length); var ver = reader.ReadByte(); if (info != HEADER_INFO) { throw LiteException.InvalidDatabase(); } if (ver != FILE_VERSION) { throw LiteException.InvalidDatabaseVersion(ver); } ChangeID = reader.ReadUInt16(); FreeEmptyPageID = reader.ReadUInt32(); LastPageID = reader.ReadUInt32(); UserVersion = reader.ReadUInt16(); Password = reader.ReadBytes(Password.Length); Salt = reader.ReadBytes(Salt.Length); // read page collections references (position on end of page) var cols = reader.ReadByte(); for (var i = 0; i < cols; i++) { CollectionPages.Add(reader.ReadString(), reader.ReadUInt32()); } // use last page byte position for recovery mode only because i forgot to reserve area before collection names! // TODO: fix this in next change data structure reader.Position = PAGE_SIZE - 1; Recovery = reader.ReadBoolean(); }
/// <summary> /// Read a page with correct instance page object. Checks for pageType /// </summary> public static BasePage ReadPage(byte[] buffer) { var reader = new ByteReader(buffer); var pageID = reader.ReadUInt32(); var pageType = (PageType)reader.ReadByte(); if (pageID == 0 && (byte)pageType > 5) { throw LiteException.InvalidDatabase(); } var page = CreateInstance(pageID, pageType); page.ReadHeader(reader); page.ReadContent(reader); page.DiskData = buffer; return(page); }