/// <summary>
/// Retrieves the <c>IMenuItem</c> associated with the specified keyword.
///
/// If no single item matches perfectly, the search will broaden to all items starting with the keyword.
///
/// In case sensitive mode, missing match which could be solved by different casing will re reported if
/// <c>complain</c> is specified.
///
/// If <c>useDefault</c> is set and a default item is present, it will be returned and no complaint
/// will be generated.
/// </summary>
///
/// <param name="cmd">
/// In: The command, possibly with arguments, from which the keyword is extracted which uniquely
/// identifies the searched menu item.
/// Out: The keyword uniquely identifying a menu item, or null if no such menu item was found.
/// </param>
/// <param name="args">
/// Out: The arguments which were supplied in addition to a keyword.
/// </param>
/// <param name="complain">
/// If true, clarifications about missing or superfluous matches will be written to stdout.
/// </param>
/// <param name="useDefault">
/// The single closest matching menu item, or the default item if no better fit was found, or null in
/// case of 0 or multiple matches.
/// </param>
/// <param name="includeDisabled">
/// Disabled menu items are included iff this is set.
/// </param>
public CMenuItem GetMenuItem(
ref string cmd,
out string args,
bool complain,
bool useDefault,
bool includeDisabled)
{
if (cmd == null)
{
throw new ArgumentNullException("cmd");
}
/*
* Is there a fitting child menu?
*/
var original = cmd;
args = cmd;
cmd = MenuUtil.SplitFirstWord(ref args);
var its = GetCommands(cmd, StringComparison, includeDisabled);
if (its.Length == 1)
{
return(its[0]);
}
if (its.Length > 1)
{
if (complain)
{
var s = cmd == ""
? "Command incomplete."
: "Command <" + cmd + "> not unique.";
OnWriteLine(
s + " Candidates: " +
string.Join(", ", its.Select(it => it.Selector)));
}
return(null);
}
/*
* Is there a fallback?
*/
var def = this[null];
if (def != null)
{
cmd = null;
args = original;
return(def);
}
/*
* We found nothing. Display this failure?
*/
if (complain)
{
OnWriteLine("Unknown command: " + cmd);
if (StringComparison.IsCaseSensitive())
{
var suggestions = GetCommands(cmd, StringComparison.InvariantCultureIgnoreCase, includeDisabled);
if (suggestions.Length > 0)
{
if (suggestions.Length == 1)
{
OnWriteLine("Did you mean \"" + suggestions[0].Selector + "\"?");
}
else if (suggestions.Length <= 5)
{
var sugs = string.Join(", ", suggestions
.Take(suggestions.Length - 1)
.Select(sug => "\"" + sug.Selector + "\""));
var s = "Did you mean " + sugs + " or \"" + suggestions.Last().Selector + "\"?";
OnWriteLine(s);
}
}
}
}
return(null);
}
/// <summary>
/// Retrieves the IMenuItem associated with the specified keyword.
///
/// If no single item matches perfectly, the search will broaden to all items starting with the keyword.
///
/// In case sensitive mode, missing match which could be solved by different casing will re reported if complain is specified.
///
/// If <c>useDefault</c> is set and a default item is present, it will be returned and no complaint will be generated.
/// </summary>
/// <param name="cmd">
/// In: The command, possibly with arguments, from which the keyword is extracted which uniquely identifies the searched menu item.
/// Out: The keyword uniquely identifying a menu item, or null if no such menu item was found.
/// </param>
/// <param name="args">
/// Out: The arguments which were supplied in addition to a keyword.
/// </param>
/// <param name="complain">
/// If true, clarifications about missing or superfluous matches will be written to stdout.
/// </param>
/// <param name="useDefault">
/// The single closest matching menu item, or the default item if no better fit was found, or null in case of 0 or multiple matches.
/// </param>
/// <returns></returns>
public CommandMenuItem GetMenuItem(ref string cmd, out string args, bool complain, bool useDefault, bool useCache)
{
if (cmd == null)
{
throw new ArgumentNullException("cmd");
}
// Is there a fitting child menu?
string original = cmd;
args = cmd;
cmd = StringHelper.SplitFirstWord(ref args);
string[] selectors;
CommandMenuItem[] its = GetCommands(cmd, out selectors, StringComparison, useCache);
if (its.Length == 1)
{
return(its[0]);
}
if (its.Length > 1)
{
if (complain)
{
IO.SetForeColor(ConsoleColor.Red);
string s = cmd == ""
? Lang.Get("Command_Incomplete")
: Lang.Get("Command_Not_Unique", cmd);
IO.WriteLine(s + " Candidates: " + string.Join(", ", selectors));
}
return(null);
}
// Is there a fallback?
CommandMenuItem def = this[null];
if (def != null)
{
cmd = null;
args = original;
return(def);
}
// We found nothing. Display this failure?
if (complain)
{
IO.SetForeColor(ConsoleColor.Red);
IO.WriteLine(Lang.Get("Unknown_Command", cmd));
if (StringComparison.IsCaseSensitive())
{
/* CommandMenuItem[] suggestions =*/
GetCommands(cmd, out selectors, StringComparison.InvariantCultureIgnoreCase, useCache);
if (selectors != null && selectors.Length > 0)
{
if (selectors.Length == 1)
{
IO.WriteLine("Did you mean \"" + selectors[0] + "\"?");
}
else if (selectors.Length <= 5)
{
IO.Write("Did you mean ");
IO.Write(string.Join(", ", selectors.Take(selectors.Length - 1).Select(sug => "\"" + sug + "\"")));
IO.Write(" or \"" + selectors.Last() + "\"?");
IO.WriteLine("");
}
}
}
}
return(null);
}
