/// <summary>Initializes a new instance of the <see cref="Connection"/> class.</summary>
/// <param name="socket">The socket upon which this connection is to be based.</param>
/// <param name="connectionHost">The system hosting this connection.</param>
public Connection(Socket socket, ISubSystem connectionHost)
{
Buffer = new StringBuilder();
OutputBuffer = new OutputBuffer();
Data = new byte[1];
TerminalOptions = new TerminalOptions();
this.socket = socket;
var remoteEndPoint = (IPEndPoint)this.socket.RemoteEndPoint;
CurrentIPAddress = remoteEndPoint.Address;
ID = Guid.NewGuid().ToString();
TelnetCodeHandler = new TelnetCodeHandler(this);
this.connectionHost = connectionHost;
}
// TODO: Optimize more
public static string Parse(char[] buffer, int bufferPos, TerminalOptions terminalOptions)
{
var result = "";
var token = "";
var charFromNewline = 0;
var isToken = false;
for (var i = 0; i < bufferPos; i++)
{
// OutputBuffer / OutputParser should be the only place writing ANSI NewLine character sequences, to help guarantee correct Telnet protocol handling.
// (Telnet protocol says new lines sent should be CR LF regardless of what OS the server is running on and what OS the client is running on.)
Debug.Assert(buffer[i] != '\r' && buffer[i] != '\n', "Output should not include explicit newline characters. Use <%nl%> or OutputBuffer WriteLine functions instead.");
if (isToken && buffer[i] == '>')
{
if (buffer[i - 1] == '%')
{
isToken = false;
token = token.Trim('%');
if (token == "nl")
{
charFromNewline = 0;
token = "";
result += AnsiSequences.NewLine;
continue;
}
if (terminalOptions.UseANSI)
{
result += AnsiHandler.ConvertCode(token);
}
token = "";
continue;
}
}
if (!isToken && buffer[i] == '<')
{
if (buffer[i + 1] == '%')
{
if (i == 0 || buffer[i - 1] != '\\')
{
isToken = true;
continue;
}
result = result.Remove(result.Length - 1);
}
}
if (!isToken)
{
result += buffer[i];
charFromNewline++;
if (charFromNewline <= terminalOptions.Width || terminalOptions.UseWordWrap == false)
{
continue;
}
var lastSpaceIndex = result.LastIndexOf(' ');
if (lastSpaceIndex > 0)
{
result = result.Remove(lastSpaceIndex, 1);
charFromNewline = result.Length - lastSpaceIndex;
result = result.Insert(lastSpaceIndex, AnsiSequences.NewLine);
}
else
{
result += AnsiSequences.NewLine;
charFromNewline = 0;
}
}
else
{
token += buffer[i];
}
}
return(result);
}
public string Parse(TerminalOptions terminalOptions)
{
return(OutputParser.Parse(buffer, bufferPos, terminalOptions));
}
//TODO: Optimize more
public static string Parse(char[] buffer, int bufferPos, TerminalOptions terminalOptions)
{
var result = "";
var token = "";
var charFromNewline = 0;
var isToken = false;
for (var i = 0; i < bufferPos; i++)
{
if (isToken && buffer[i] == '>')
{
if (buffer[i - 1] == '%')
{
isToken = false;
token = token.Trim('%');
if (token == "nl")
{
charFromNewline = 0;
token = "";
result += AnsiSequences.NewLine;
continue;
}
if (terminalOptions.UseANSI)
{
result += AnsiHandler.ConvertCode(token);
}
token = "";
continue;
}
}
if (!isToken && buffer[i] == '<')
{
if (buffer[i + 1] == '%')
{
if (i == 0 || buffer[i - 1] != '\\')
{
isToken = true;
continue;
}
result = result.Remove(result.Length - 1);
}
}
if (!isToken)
{
result += buffer[i];
charFromNewline++;
if (charFromNewline <= terminalOptions.Width || terminalOptions.UseWordWrap == false)
{
continue;
}
var lastSpaceIndex = result.LastIndexOf(' ');
if (lastSpaceIndex > 0)
{
result = result.Remove(lastSpaceIndex, 1);
charFromNewline = result.Length - lastSpaceIndex;
result = result.Insert(lastSpaceIndex, AnsiSequences.NewLine);
}
else
{
result += AnsiSequences.NewLine;
charFromNewline = 0;
}
}
else
{
token += buffer[i];
}
}
return(result);
}