Add support for Telegram Sticker (.tgs) files (#1762)

QuickLook.Plugin/QuickLook.Plugin.ImageViewer/Webview/Tgs/TgsDetector.cs

@@ -0,0 +1,42 @@
+// 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 QuickLook.Plugin.ImageViewer.Webview.Lottie;
+
+namespace QuickLook.Plugin.ImageViewer.Webview.Tgs;
+
+internal static class TgsDetector
+{
+    public static bool IsValidFile(string path)
+    {
+        try
+        {
+            // Extract JSON content from gzipped TGS file
+            var jsonString = TgsExtractor.GetJsonContent(path);
+            return IsVaildContent(jsonString);
+        }
+        catch
+        {
+            // If any exception occurs, assume it's not a valid TGS file
+        }
+
+        return false;
+    }
+
+    public static bool IsVaildContent(string jsonString)
+        => LottieDetector.IsVaildContent(jsonString);
+}