/// <summary>
/// Start a new digit argument to pass to other functions
/// </summary>
public static void DigitArgument(ConsoleKeyInfo?key = null, object arg = null)
{
if (!key.HasValue || char.IsControl(key.Value.KeyChar))
{
Ding();
return;
}
#region VI special case
if (_singleton._options.EditMode == EditMode.Vi && key.Value.KeyChar == '0')
{
BeginningOfLine();
return;
}
#endregion VI special case
bool sawDigit = false;
_singleton._statusLinePrompt = "digit-argument: ";
var argBuffer = _singleton._statusBuffer;
argBuffer.Append(key.Value.KeyChar);
if (key.Value.KeyChar == '-')
{
argBuffer.Append('1');
}
else
{
sawDigit = true;
}
_singleton.Render(); // Render prompt
while (true)
{
var nextKey = ReadKey();
KeyHandler handler;
if (_singleton._dispatchTable.TryGetValue(nextKey, out handler))
{
if (handler.Action == DigitArgument)
{
if (nextKey.KeyChar == '-')
{
if (argBuffer[0] == '-')
{
argBuffer.Remove(0, 1);
}
else
{
argBuffer.Insert(0, '-');
}
_singleton.Render(); // Render prompt
continue;
}
if (nextKey.KeyChar >= '0' && nextKey.KeyChar <= '9')
{
if (!sawDigit && argBuffer.Length > 0)
{
// Buffer is either '-1' or '1' from one or more Alt+- keys
// but no digits yet. Remove the '1'.
argBuffer.Length -= 1;
}
sawDigit = true;
argBuffer.Append(nextKey.KeyChar);
_singleton.Render(); // Render prompt
continue;
}
}
else if (handler.Action == Abort ||
handler.Action == CancelLine ||
handler.Action == CopyOrCancelLine)
{
break;
}
}
int intArg;
if (int.TryParse(argBuffer.ToString(), out intArg))
{
_singleton.ProcessOneKey(nextKey, _singleton._dispatchTable, ignoreIfNoAction: false, arg: intArg);
}
else
{
Ding();
}
break;
}
// Remove our status line
argBuffer.Clear();
_singleton.ClearStatusMessage(render: true);
}