/// <summary>
/// Handle UP arrow key to get the previous command executed
/// </summary>
void HandleUpArrow()
{
if (!cmdhistory.PreviousAvailable())
{
return;
}
cmdhistory.Update(buffer.ToString());
string value = cmdhistory.Previous();
if (value != null)
{
// If max window size is reached, start writing on the next line
if (buffer.Length > (Console.WindowWidth - prompt.Length))
{
// Calculate the number of lines based on the buffer length and window size
int line = ((buffer.Length + prompt.Length) / Console.BufferWidth);
if (cursorPtr > (Console.BufferWidth - prompt.Length))
{
ClearConsoleLine();
if (Console.CursorTop - line >= 0)
{
Console.SetCursorPosition(prompt.Length, Console.CursorTop - line);
}
ClearConsoleLine();
}
else
{
if (Console.CursorTop + 1 <= Console.BufferHeight)
{
Console.SetCursorPosition(Console.CursorLeft, Console.CursorTop + 1);
}
ClearConsoleLine();
if (Console.CursorTop - 1 >= 0)
{
Console.SetCursorPosition(0, Console.CursorTop - 1);
}
if (Console.CursorTop - line >= 0)
{
Console.SetCursorPosition(prompt.Length, Console.CursorTop - line);
}
}
}
else
{
ClearConsoleLine();
}
SetText(value);
}
}
/// <summary>
/// Get next available value from command history
/// </summary>
/// <returns></returns>
internal static string GetNext()
{
if (!historySerial.NextAvailable())
{
historySerial.CursorToEnd();
return(null);
}
string next = historySerial.Next();
AddToBuffer(next);
historySerial.Update(Encoding.UTF8.GetString(_userCommandInput.ToArray(), 0, _userCommandInput.Count));
return(next);
}