replace v6 with experimental v7 code

src/MpvNet/InputConf.cs

@@ -0,0 +1,74 @@
+
+using MpvNet.Help;
+
+namespace MpvNet;
+
+public class InputConf
+{
+    string? _content;
+    bool? _hasMenu;
+
+    public InputConf(string path) { Path = path; }
+
+    public string Path { get; }
+
+    public string Content
+    {
+        get => _content ??= FileHelp.ReadTextFile(Path);
+        set => _content = value;
+    }
+        
+    public bool HasMenu => _hasMenu ??= Content.Contains("#menu:");
+
+    public List<Binding> GetMenuBindings()
+    {
+        var confbindings = InputHelp.Parse(Content);
+
+        if (HasMenu)
+            return confbindings;
+
+        var defaultBindings = InputHelp.GetDefaults();
+
+        foreach (Binding defaultBinding in defaultBindings)
+            foreach (Binding confBinding in confbindings)
+                if (defaultBinding.Input == confBinding.Input &&
+                    defaultBinding.Command != confBinding.Command)
+                {
+                    defaultBinding.Input = "";
+                }
+
+        foreach (Binding defaultBinding in defaultBindings)
+            foreach (Binding confBinding in confbindings)
+                if (defaultBinding.Command == confBinding.Command)
+                    defaultBinding.Input = confBinding.Input;
+
+        return defaultBindings;
+    }
+
+    public string GetContent()
+    {
+        if (HasMenu)
+            return Content;
+        else
+        {
+            var defaults = InputHelp.GetDefaults();
+            var removed = new List<Binding>();
+            var conf = InputHelp.Parse(Content);
+
+            foreach (Binding defaultBinding in defaults)
+                foreach (Binding confBinding in conf)
+                    if (defaultBinding.Command == confBinding.Command &&
+                        defaultBinding.Comment == confBinding.Comment)
+                    {
+                        defaultBinding.Input = confBinding.Input;
+                        removed.Add(confBinding);
+                    }
+
+            foreach (Binding binding in removed)
+                conf.Remove(binding);
+
+            defaults.AddRange(conf);
+            return InputHelp.ConvertToString(defaults);
+        }
+    }
+}