static string GetConsoleLine(ref NEXT_CMD cmd, string init = "",
bool enhancedMode = true)
{
//string line = init;
StringBuilder sb = new StringBuilder(init);
int delta = init.Length - 1;
string prompt = GetPrompt();
Console.Write(prompt);
Console.Write(init);
if (!enhancedMode)
{
return(Console.ReadLine());
}
while (true)
{
ConsoleKeyInfo key = Console.ReadKey(true);
if (key.Key == ConsoleKey.UpArrow)
{
cmd = NEXT_CMD.PREV;
ClearLine(prompt, sb.ToString());
return(sb.ToString());
}
if (key.Key == ConsoleKey.DownArrow)
{
cmd = NEXT_CMD.NEXT;
ClearLine(prompt, sb.ToString());
return(sb.ToString());
}
if (key.Key == ConsoleKey.RightArrow)
{
delta = Math.Max(-1, Math.Min(++delta, sb.Length - 1));
SetCursor(prompt, sb.ToString(), delta + 1);
continue;
}
if (key.Key == ConsoleKey.LeftArrow)
{
delta = Math.Max(-1, Math.Min(--delta, sb.Length - 1));
SetCursor(prompt, sb.ToString(), delta + 1);
continue;
}
if (key.Key == ConsoleKey.Tab)
{
cmd = NEXT_CMD.TAB;
ClearLine(prompt, sb.ToString());
return(sb.ToString());
}
if (key.Key == ConsoleKey.Backspace || key.Key == ConsoleKey.Delete)
{
if (sb.Length > 0)
{
delta = key.Key == ConsoleKey.Backspace ?
Math.Max(-1, Math.Min(--delta, sb.Length - 2)) : delta;
if (delta < sb.Length - 1)
{
sb.Remove(delta + 1, 1);
}
SetCursor(prompt, sb.ToString(), Math.Max(0, delta + 1));
}
continue;
}
if (key.Key == ConsoleKey.Enter)
{
Console.WriteLine();
return(sb.ToString());
}
if (key.KeyChar == Constants.EMPTY)
{
continue;
}
++delta;
Console.Write(key.KeyChar);
if (delta < sb.Length)
{
delta = Math.Max(0, Math.Min(delta, sb.Length - 1));
sb.Insert(delta, key.KeyChar.ToString());
}
else
{
sb.Append(key.KeyChar);
}
SetCursor(prompt, sb.ToString(), delta + 1);
}
}
private static void RunLoop()
{
List <string> commands = new List <string>();
StringBuilder sb = new StringBuilder();
int cmdPtr = 0;
int tabFileIndex = 0;
bool arrowMode = false;
string start = "", baseCmd = "", startsWith = "", init = "", script;
string previous = "";
while (true)
{
sb.Clear();
NEXT_CMD nextCmd = NEXT_CMD.NONE;
script = previous + GetConsoleLine(ref nextCmd, init).Trim();
if (script.EndsWith(Constants.CONTINUE_LINE.ToString()))
{
previous = script.Remove(script.Length - 1);
init = "";
continue;
}
if (nextCmd == NEXT_CMD.PREV || nextCmd == NEXT_CMD.NEXT)
{
if (arrowMode || nextCmd == NEXT_CMD.NEXT)
{
cmdPtr += (int)nextCmd;
}
cmdPtr = cmdPtr < 0 || commands.Count == 0 ?
cmdPtr + commands.Count :
cmdPtr % commands.Count;
init = commands.Count == 0 ? script : commands[cmdPtr];
arrowMode = true;
continue;
}
else if (nextCmd == NEXT_CMD.TAB)
{
init = CompleteTab(script, init, ref tabFileIndex,
ref start, ref baseCmd, ref startsWith);
continue;
}
init = "";
previous = "";
tabFileIndex = 0;
arrowMode = false;
if (string.IsNullOrWhiteSpace(script))
{
continue;
}
if (commands.Count == 0 || !commands[commands.Count - 1].Equals(script))
{
commands.Add(script);
}
if (!script.EndsWith(Constants.END_STATEMENT.ToString()))
{
script += Constants.END_STATEMENT;
}
ProcessScript(script);
cmdPtr = commands.Count - 1;
}
}
