public string ReadMyLine(Action <string> printStr, Func <string, string> tabcallback)
{
var buf = "";
while (true)
{
var k = Console.ReadKey(true);
switch (k.Key)
{
case ConsoleKey.Tab:
if (buf.Length == Console.BufferWidth - 1)
{
break;
}
var ret = tabcallback(buf);
if (ret == null)
{
break;
}
if (!ret.Equals(buf))
{
ExtendedConsole.ClearCurrentConsoleLine();
buf = ret;
printStr(buf);
}
break;
case ConsoleKey.Enter:
return(buf);
case ConsoleKey.Escape:
buf = string.Empty;
ExtendedConsole.ClearCurrentConsoleLine();
Console.SetCursorPosition(0, Console.CursorTop);
break;
case ConsoleKey.Backspace:
if (buf.Length == 0)
{
break;
}
buf = buf.Substring(0, buf.Length - 1);
Console.CursorLeft--;
Console.Write(' ');
Console.CursorLeft--;
printStr(buf);
break;
case ConsoleKey.UpArrow:
if (CommandHistoryIndex == CommandHistory.Count)
{
break;
}
ExtendedConsole.ClearCurrentConsoleLine();
Console.CursorLeft = 0;
buf = CommandHistory[CommandHistory.Count - ++CommandHistoryIndex];
printStr(buf);
break;
case ConsoleKey.DownArrow:
if (CommandHistoryIndex == 0)
{
break;
}
ExtendedConsole.ClearCurrentConsoleLine();
Console.CursorLeft = 0;
buf = --CommandHistoryIndex == 0 ? "" : CommandHistory[CommandHistory.Count - CommandHistoryIndex];
printStr(buf);
break;
default:
if (buf.Length == Console.BufferWidth - 1)
{
break;
}
if (char.IsLetterOrDigit(k.KeyChar) ||
char.IsPunctuation(k.KeyChar) ||
char.IsWhiteSpace(k.KeyChar) ||
char.IsSymbol(k.KeyChar))
{
buf += k.KeyChar;
printStr(buf);
}
break;
}
}
}