public static Tuple <TerminalVt100Statement, Vt100OutputText> Factory(
InputByteArray InputArray)
{
TerminalVt100Statement stmt = null;
Vt100OutputText otStmt = null;
var escapeCmd = InputArray.PeekNextByte().ToTelnetCommand();
Vt100Command?cmd = null;
if ((escapeCmd != null) && (escapeCmd.Value == TelnetCommand.ESCAPE) &&
(InputArray.RemainingLength > 1))
{
InputArray.AdvanceIndex(1);
var rv = InputArray.GetBytesUntilCode(new byte[] { 0x1b });
var buf = rv.Item1;
int rx = 0;
var stmtText = buf.ToAscii();
stmt = Factory_FromStmtText(stmtText);
// process any output text that follows the stmt text.
{
int lx = stmt.StmtText.Length;
if (stmtText.Length > lx)
{
stmtText = stmtText.Substring(lx);
otStmt = new Vt100OutputText(stmtText);
}
}
}
return(new Tuple <TerminalVt100Statement, Vt100OutputText>(stmt, otStmt));
}
private static TerminalVt100Statement Factory_FromStmtText(string StmtText)
{
Vt100Command? cmd = null;
TerminalVt100Statement stmt = null;
string text1 = "";
string text2 = "";
string text3 = "";
string text4 = "";
string text20 = "";
int rx = 0;
if (StmtText.Length >= 1)
{
text1 = StmtText.Substring(0, 1);
}
if (StmtText.Length >= 2)
{
text2 = StmtText.Substring(0, 2);
}
if (StmtText.Length >= 3)
{
text3 = StmtText.Substring(0, 3);
}
if (StmtText.Length >= 4)
{
text4 = StmtText.Substring(0, 4);
}
int lx = IntExt.Min(StmtText.Length, 20);
text20 = StmtText.Substring(0, lx);
if (text4 == "[?3l")
{
cmd = Vt100Command.SetCol80;
stmt = new TerminalVt100Statement(StmtText.Substring(0, 4), cmd);
}
else if (text4 == "[?7h")
{
cmd = Vt100Command.SetAutoWrap;
stmt = new TerminalVt100Statement(StmtText.Substring(0, 4), cmd);
}
else if (text3 == "[0m")
{
stmt = new TerminalVt100Statement(text3, Vt100Command.CharAttrOff);
}
else if (text3 == "[1m")
{
stmt = new TerminalVt100Statement(text3, Vt100Command.BoldModeOn);
}
else if (text3 == "[4m")
{
stmt = new TerminalVt100Statement(text3, Vt100Command.UnderlineModeOn);
}
else if (text3 == "[2J")
{
stmt = new TerminalVt100Statement(text3, Vt100Command.ClearScreen);
}
else if ((text1 == "[") && (StmtText.Length >= 5) &&
((rx = StmtText.MatchRegExp(REGEXPCURSORPOSITION)) > 0))
{
stmt = new Vt100PosCursor(StmtText.Substring(0, rx));
}
else
{
stmt = new TerminalVt100Statement(StmtText, null);
}
return(stmt);
}