Add: os.rename

src/Lua/Standard/OpenLibExtensions.cs

@@ -91,6 +91,7 @@ public static class OpenLibExtensions
         ExitFunction.Instance,
         GetEnvFunction.Instance,
         OperatingSystem.RemoveFunction.Instance,
+        RenameFunction.Instance,
         SetLocaleFunction.Instance,
         TimeFunction.Instance,
     ];

src/Lua/Standard/OperatingSystem/RenameFunction.cs

@@ -0,0 +1,26 @@
+namespace Lua.Standard.OperatingSystem;
+
+public sealed class RenameFunction : LuaFunction
+{
+    public override string Name => "rename";
+    public static readonly RenameFunction Instance = new();
+
+    protected override ValueTask<int> InvokeAsyncCore(LuaFunctionExecutionContext context, Memory<LuaValue> buffer, CancellationToken cancellationToken)
+    {
+        var oldName = context.GetArgument<string>(0);
+        var newName = context.GetArgument<string>(1);
+        try
+        {
+            File.Move(oldName, newName);
+            buffer.Span[0] = true;
+            return new(1);
+        }
+        catch(IOException ex)
+        {
+            buffer.Span[0] = LuaValue.Nil;
+            buffer.Span[1] = ex.Message;
+            buffer.Span[2] = ex.HResult;
+            return new(3);
+        }
+    }
+}