public static void YankNthArg(ConsoleKeyInfo?key = null, object arg = null)
{
var yankLastArgState = new YankLastArgState
{
argument = (arg is int) ? (int)arg : 1,
historyIndex = _singleton._currentHistoryIndex - 1,
};
_singleton.YankArgImpl(yankLastArgState);
}
void YankArgImpl(YankLastArgState yankLastArgState)
{
if (yankLastArgState.historyIndex < 0 || yankLastArgState.historyIndex >= _history.Count)
{
Ding();
return;
}
Token[] tokens;
ParseError[] errors;
var buffer = _history[yankLastArgState.historyIndex];
Parser.ParseInput(buffer._line, out tokens, out errors);
int arg = (yankLastArgState.argument < 0)
? tokens.Length + yankLastArgState.argument - 1
: yankLastArgState.argument;
if (arg < 0 || arg >= tokens.Length)
{
Ding();
return;
}
var argText = tokens[arg].Text;
if (yankLastArgState.startPoint < 0)
{
yankLastArgState.startPoint = _current;
Insert(argText);
}
else
{
Replace(yankLastArgState.startPoint, _current - yankLastArgState.startPoint, argText);
}
}
void YankArgImpl(YankLastArgState yankLastArgState)
{
if (yankLastArgState.historyIndex < 0 || yankLastArgState.historyIndex >= _history.Count)
{
Ding();
return;
}
Token[] tokens;
ParseError[] errors;
var buffer = _history[yankLastArgState.historyIndex];
Parser.ParseInput(buffer._line, out tokens, out errors);
int arg = (yankLastArgState.argument < 0)
? tokens.Length + yankLastArgState.argument - 1
: yankLastArgState.argument;
if (arg < 0 || arg >= tokens.Length)
{
Ding();
return;
}
var argText = tokens[arg].Text;
if (yankLastArgState.startPoint < 0)
{
yankLastArgState.startPoint = _current;
Insert(argText);
}
else
{
Replace(yankLastArgState.startPoint, _current - yankLastArgState.startPoint, argText);
}
}
/// <summary>
/// Yank the first argument (after the command) from the previous history line.
/// With an argument, yank the nth argument (starting from 0), if the argument
/// is negative, start from the last argument.
/// </summary>
public static void YankNthArg(ConsoleKeyInfo? key = null, object arg = null)
{
var yankLastArgState = new YankLastArgState
{
argument = (arg is int) ? (int)arg : 1,
historyIndex = _singleton._currentHistoryIndex - 1,
};
_singleton.YankArgImpl(yankLastArgState);
}
