/**
* @return Q3DemoMessage return a next message buffer or null if EOD is reached
* @throws Exception in case stream is corrupted
*/
public Q3DemoMessage nextMessage()
{
byte[] headerBuffer = binaryReader.ReadBytes(8);
if (headerBuffer.Length != 8)
{
return(null);
}
//if (BitConverter.IsLittleEndian) {
// Array.Reverse(headerBuffer);
//}
int sequence = BitConverter.ToInt32(headerBuffer, 0);
int msgLength = BitConverter.ToInt32(headerBuffer, 4);
if (sequence == -1 && msgLength == -1)
{
// a normal case, end of message-sequence
return(null);
}
if (msgLength < 0 || msgLength > Constants.Q3_MESSAGE_MAX_SIZE)
{
throw new ErrorWrongLength();
}
var msg = new Q3DemoMessage(sequence, msgLength);
msg.data = binaryReader.ReadBytes(msgLength);
this.readMessages++;
return(msg);
}
private Q3DemoConfigParser doParse(Q3DemoConfigParser msgParser)
{
Q3MessageStream messageStream = new Q3MessageStream(this.file_name);
try
{
Q3DemoMessage msg = null;
while ((msg = messageStream.nextMessage()) != null)
{
if (!msgParser.parse(msg))
{
break;
}
}
}
catch (Exception r) {
Q3Utils.PrintDebug(msgParser.clc.errors, r.Message);
}
messageStream.close();
return(msgParser);
}
public bool parse(Q3DemoMessage message)
{
clc.serverMessageSequence = message.sequence;
Q3HuffmanReader reader = new Q3HuffmanReader(message.data);
reader.readLong();
while (!reader.isEOD())
{
var b = reader.readByte();
switch (b)
{
case Q3_SVC.BAD:
case Q3_SVC.NOP:
return(true);
case Q3_SVC.EOF:
return(true);
case Q3_SVC.SERVERCOMMAND:
this.parseServerCommand(reader);
break;
case Q3_SVC.GAMESTATE:
this.parseGameState(reader);
break;
case Q3_SVC.SNAPSHOT:
this.parseSnapshot(reader);
// snapshots couldn't be mixed with game-state command in a single message
break;
default:
// unknown command / corrupted stream
return(true);
}
}
return(true);
}
