public Data.Node Store(Storage storage, Data.Node data)
{
if (data is Data.Branch)
{
Kean.Collection.IList<Data.Node> nodes = new Kean.Collection.List<Data.Node>();
foreach (Data.Node child in (data as Data.Branch).Nodes)
if (child is Data.Collection)
foreach (Data.Node c in (child as Data.Collection).Nodes)
nodes.Add(c);
else
nodes.Add(child);
(data as Data.Branch).Nodes.Clear();
foreach (Data.Node node in nodes)
(data as Data.Branch).Nodes.Add(this.Store(storage, node));
}
return data;
}
void Filter()
{
byte? result = this.backend.Read();
if (result.HasValue)
switch ((Command)result.Value)
{
case Command.SE: // End of subnegotiation parameters
break;
case Command.NOP: // No operation
break;
case Command.DM: // Data mark
break;
case Command.BRK: // Break
break;
case Command.IP: // Suspend
break;
case Command.AO: // Abort output
break;
case Command.AYT: // Are you there
break;
case Command.EC: // Erase character
break;
case Command.EL: // Erase line
break;
case Command.GA: // Go ahead
break;
case Command.SB: // Subnegotiation
this.backend.Read(); // option
this.backend.Read(); // supplied (0) / required (1)
Collection.List<byte> value = new Kean.Collection.List<byte>();
byte? v;
while ((v = this.backend.Read()).HasValue && (Command)v.Value != Command.IAC)
value.Add(v.Value);
this.backend.Read(); // SE
break;
case Command.WILL: // Will
{
byte? option = this.backend.Read(); // option
if (option.HasValue)
switch ((Option)option.Value)
{
case Option.WindowSize:
case Option.TerminalType:
default:
this.backend.Write(new byte[] { (byte)Command.IAC, (byte)Command.WONT, option.Value });
break;
case Option.TerminalSpeed:
this.backend.Write(new byte[] {
(byte)Command.IAC,
(byte)Command.SB,
option.Value,
1,
(byte)Command.IAC,
(byte)Command.SE
});
break;
case Option.SuppressGoAhead:
this.backend.Write(new byte[] { (byte)Command.IAC, (byte)Command.DO, option.Value });
break;
}
}
break;
case Command.WONT: // Wont
this.backend.Read(); // option
break;
case Command.DO: // Do
{
byte? option = this.backend.Read(); // option
if (option.HasValue)
switch ((Option)option.Value)
{
case Option.WindowSize:
case Option.TerminalSpeed:
case Option.TerminalType:
default:
this.backend.Write(new byte[] { (byte)Command.IAC, (byte)Command.WONT, option.Value });
break;
case Option.Echo:
case Option.SuppressGoAhead:
if (!this.echo.HasValue || !this.echo.Value)
this.backend.Write(new byte[] { (byte)Command.IAC, (byte)Command.WILL, option.Value });
this.echo = true;
break;
}
}
break;
case Command.DONT: // Dont
{
byte? option = this.backend.Read(); // option
if (option.HasValue)
switch ((Option)option.Value)
{
case Option.Echo:
case Option.SuppressGoAhead:
if (!this.echo.HasValue || this.echo.Value)
this.backend.Write(new byte[] { (byte)Command.IAC, (byte)Command.WONT, option.Value });
this.echo = false;
break;
}
}
break;
case Command.IAC: // Interpret as command
this.Filter();
break;
}
}