public static ContentNode Parse(ContentCodeBag bag, byte[] buffer, string root, ref int offset) { ContentNode node = new ContentNode(); int num = IPAddress.NetworkToHostOrder(BitConverter.ToInt32(buffer, offset)); ContentCode code = bag.Lookup(num); if (code.Equals(ContentCode.Zero)) { // probably a buggy server. fallback to our internal code bag code = ContentCodeBag.Default.Lookup(num); } int length = IPAddress.NetworkToHostOrder(BitConverter.ToInt32(buffer, offset + 4)); if (code.Equals(ContentCode.Zero)) { throw new ContentException(String.Format("Failed to find content code for '{0}'. Data length is {1}", ContentCodeBag.GetStringFormat(num), length)); } node.Name = code.Name; switch (code.Type) { case ContentType.Char: node.Value = (byte)buffer[offset + 8]; break; case ContentType.Short: node.Value = IPAddress.NetworkToHostOrder(BitConverter.ToInt16(buffer, offset + 8)); break; case ContentType.SignedLong: case ContentType.Long: node.Value = IPAddress.NetworkToHostOrder(BitConverter.ToInt32(buffer, offset + 8)); break; case ContentType.LongLong: node.Value = IPAddress.NetworkToHostOrder(BitConverter.ToInt64(buffer, offset + 8)); break; case ContentType.String: node.Value = Encoding.UTF8.GetString(buffer, offset + 8, length); break; case ContentType.Date: node.Value = Utility.ToDateTime(IPAddress.NetworkToHostOrder(BitConverter.ToInt32(buffer, offset + 8))); break; case ContentType.Version: int major = IPAddress.NetworkToHostOrder(BitConverter.ToInt16(buffer, offset + 8)); int minor = (int)buffer[offset + 10]; int micro = (int)buffer[offset + 11]; node.Value = new Version(major, minor, micro); break; case ContentType.Container: node.Value = ParseChildren(bag, buffer, offset + 8, length); break; default: throw new ContentException(String.Format("Unknown content type '{0}' for '{1}'", code.Type, code.Name)); } offset += length + 8; if (root != null) { ContentNode rootNode = node.GetChild(root); if (rootNode == null) { throw new ContentException(String.Format("Could not find root node '{0}'", root)); } return(rootNode); } else { return(node); } }
private static void Write(ContentCodeBag bag, ContentNode node, BinaryWriter writer) { ContentCode code = bag.Lookup(node.Name); if (code.Equals(ContentCode.Zero)) { throw new ContentException("Failed to get content code for: " + node.Name); } writer.Write(IPAddress.HostToNetworkOrder(code.Number)); switch (code.Type) { case ContentType.Char: writer.Write(IPAddress.HostToNetworkOrder(1)); writer.Write((byte)node.Value); break; case ContentType.Short: writer.Write(IPAddress.HostToNetworkOrder(2)); writer.Write(IPAddress.HostToNetworkOrder((short)node.Value)); break; case ContentType.SignedLong: case ContentType.Long: writer.Write(IPAddress.HostToNetworkOrder(4)); writer.Write(IPAddress.HostToNetworkOrder((int)node.Value)); break; case ContentType.LongLong: writer.Write(IPAddress.HostToNetworkOrder(8)); writer.Write(IPAddress.HostToNetworkOrder((long)node.Value)); break; case ContentType.String: byte[] data = Encoding.UTF8.GetBytes((string)node.Value); writer.Write(IPAddress.HostToNetworkOrder(data.Length)); writer.Write(data); break; case ContentType.Date: writer.Write(IPAddress.HostToNetworkOrder(4)); writer.Write(IPAddress.HostToNetworkOrder(Utility.FromDateTime((DateTime)node.Value))); break; case ContentType.Version: Version version = (Version)node.Value; writer.Write(IPAddress.HostToNetworkOrder(4)); writer.Write((short)IPAddress.HostToNetworkOrder((short)version.Major)); writer.Write((byte)version.Minor); writer.Write((byte)version.Build); break; case ContentType.Container: MemoryStream childStream = new MemoryStream(); BinaryWriter childWriter = new BinaryWriter(childStream); foreach (ContentNode child in (ContentNode[])node.Value) { Write(bag, child, childWriter); } childWriter.Flush(); byte[] bytes = childStream.GetBuffer(); int len = (int)childStream.Length; writer.Write(IPAddress.HostToNetworkOrder(len)); writer.Write(bytes, 0, len); childWriter.Close(); break; default: Console.Error.WriteLine("Cannot write node of type: " + code.Type); break; } }