Add Lottie Files animation preview support

QuickLook.Plugin/QuickLook.Plugin.ImageViewer/Webview/Lottie/LottieDetector.cs

@@ -0,0 +1,51 @@
+// Copyright © 2017-2025 QL-Win Contributors
+//
+// This file is part of QuickLook program.
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+using System.Collections.Generic;
+using System.IO;
+
+namespace QuickLook.Plugin.ImageViewer.Webview.Lottie;
+
+internal static class LottieDetector
+{
+    public static bool IsVaild(string path)
+    {
+        try
+        {
+            var jsonString = File.ReadAllText(path);
+
+            // No exception will be thrown here
+            var jsonLottie = LottieParser.Parse<Dictionary<string, object>>(jsonString);
+
+            if (jsonLottie != null
+             && jsonLottie.ContainsKey("v")
+             && jsonLottie.ContainsKey("fr")
+             && jsonLottie.ContainsKey("ip")
+             && jsonLottie.ContainsKey("op")
+             && jsonLottie.ContainsKey("layers"))
+            {
+                return true;
+            }
+        }
+        catch
+        {
+            // If any exception occurs, assume it's not a valid Lottie file
+        }
+
+        return false;
+    }
+}