draw help

ModpackUpdater/Options.cs

@@ -6,17 +6,20 @@ namespace ModpackUpdater;
 internal class Options
 {
     private readonly List<string> additionals = [];
+    private readonly OptionSet options;
 
     public IReadOnlyList<string> Additionals => additionals;
+    public bool Help { get; private set; }
     public bool Silent { get; private set; }
     public bool NoUi { get; private set; }
     public UpdateCheckOptionsAdv UpdateOptions { get; } = new();
 
     public Options(string[] args)
     {
-        var options = new OptionSet
+        options = new OptionSet
         {
             { "silent", "Do not output anything.", s => Silent = s != null },
+            { "h|help", "Writes the help text as output.", h => Help = h != null },
             { "n|noui", "Install without user interface.", n => NoUi = n != null },
             { "p|profile=", "Sets the minecraft profile folder.", p => UpdateOptions.ProfileFolder = p },
             { "c|config=", "Sets the minecraft profile folder.", c => UpdateOptions.ModpackConfig = c },
@@ -29,4 +32,9 @@ internal class Options
 
         additionals.AddRange(options.Parse(args));
     }
+
+    public void DrawHelp()
+    {
+        options.WriteOptionDescriptions(Console.Out);
+    }
 }

ModpackUpdater/Program.cs

@@ -30,7 +30,12 @@ public static class Program
     {
         var options = new Options(args);
         if (options.NoUi)
-            InstallWithoutGui(options.UpdateOptions, options.Silent);
+        {
+            if (options.Help)
+                options.DrawHelp();
+            else
+                InstallWithoutGui(options.UpdateOptions, options.Silent);
+        }
         else
         {
             ShowWindow(GetConsoleWindow(), 0);