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) {
try {
Write (bag, child, childWriter);
} catch (Exception) {
Console.Error.WriteLine ("Error writing node {0}, val type is {1}", child.Name, child.Value.GetType ());
throw;
}
}
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;
}
}
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)) {
string s = System.Text.ASCIIEncoding.ASCII.GetString (buffer);
throw new ContentException (String.Format ("Failed to find content code for '{0}'. Data length is {1}; content is {2}",
ContentCodeBag.GetStringFormat (num), length, s));
}
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;
}
}