public static void Execute(ProgramExecutionOptions options)
{
if (ProgramUtil.ShowHelpIfNeeded(options))
{
return;
}
bool everythingOk = true;
int count = 0;
ClearMode mode = ClearMode.Top;
if (options.ParsedArguments.Count == 0)
{
count = DataHolder.TerminalData.AllEntries.Count;
}
else if (CommandLineUtil.ValidateArguments(options.ParsedArguments, Validations))
{
Pair <string, string> modeArg;
Pair <string, string> countArg;
bool modePresent =
CommandLineUtil.TryGetArgumentByName(options.ParsedArguments, ModeArgName, out modeArg);
bool countPresent =
CommandLineUtil.TryGetArgumentByName(options.ParsedArguments, CountArgName, out countArg);
if (modePresent && !countPresent)
{
var msg = "You need to supply the number of line to clear when using the mode argument.";
msg = TextUtil.Error(msg);
TerminalUtil.ShowText(msg);
everythingOk = false;
}
if (countPresent && !modePresent)
{
var msg =
"You need to supply the mode argument when removing a specific quantity of lines.";
msg = TextUtil.Error(msg);
TerminalUtil.ShowText(msg);
everythingOk = false;
}
if (everythingOk)
{
if (!MiscUtil.TryParseEnum(modeArg.Value, out mode))
{
var msg = string.Format("'{0}' is not a valid clear mode. It must be either 'top' or 'down'.",
modeArg.Value);
msg = TextUtil.Error(msg);
TerminalUtil.ShowText(msg);
everythingOk = false;
}
else if (!int.TryParse(countArg.Value, out count))
{
var msg = string.Format("'{0}' is not a valid number of lines!", countArg.Value);
msg = TextUtil.Error(msg);
TerminalUtil.ShowText(msg);
everythingOk = false;
}
}
}
else
{
everythingOk = false;
var modeResult = ModeValidation.ValidationResult;
var countResult = CountValidation.ValidationResult;
if (MathUtil.ContainsFlag((int)modeResult, (int)ArgValidationResult.EmptyValue))
{
var msg = "The 'mode' argument must be either 'top' or 'down'.";
msg = TextUtil.Error(msg);
TerminalUtil.ShowText(msg);
}
else if (MathUtil.ContainsFlag((int)modeResult, (int)ArgValidationResult.Duplicated))
{
var msg = "Please supply only one 'mode' argument.";
msg = TextUtil.Error(msg);
TerminalUtil.ShowText(msg);
}
}
if (everythingOk)
{
if (mode == ClearMode.Bottom)
{
TerminalUtil.RemoveTextEntries(count, TerminalEntryRemoveType.NewerEntries);
}
else
{
TerminalUtil.RemoveTextEntries(count, TerminalEntryRemoveType.OlderEntries);
}
}
}
