script: support running macros

BetterGenshinImpact/Core/Script/Utils/ScriptUtils.cs

@@ -0,0 +1,26 @@
+using System;
+using System.IO;
+
+namespace BetterGenshinImpact.Core.Script.Utils;
+
+public class ScriptUtils
+{
+    /// <summary>
+    /// Normalize and validate a path.
+    /// </summary>
+    public static string NormalizePath(string root, string path)
+    {
+        // convert to full path relative to root
+        path = path.Replace('\\', '/');
+        var fullPath = Path.GetFullPath(Path.Combine(root, path));
+
+        // if root is locked, make sure didn't attempt to exit it
+        if (!fullPath.StartsWith(root))
+        {
+            throw new ArgumentException($"Path '{path}' is not allowed, because its outside the caged root folder!");
+        }
+
+        // return full path
+        return fullPath;
+    }
+}