static Packager()
 {
     s_Instance = new Packager();
 }
        static string[] GetGUIDS(Package package, string localRootPath)
        {
            var includeProjectSettings = package.IsCompleteProjects && !s_SkipProjectSettings;
            var str1  = "Assets" + (localRootPath ?? string.Empty);
            var chars = new[] { (char)47 };
            var path1 = str1.Trim(chars);

            string[] guidArray       = null;
            object[] assetsItemArray = null;

            if (AssetStoreTools.GetAssembly().GetType("UnityEditor.AssetServer") != null)
            {
                assetsItemArray = AssetServer.BuildExportPackageAssetListAssetsItems(AssetServer.CollectAllChildren(AssetDatabase.AssetPathToGUID(path1), new string[0]), true);
            }
            else
            {
                guidArray = Packager.BuildExportPackageAssetListGuids(Packager.CollectAllChildren(AssetDatabase.AssetPathToGUID(path1), new string[0]), true);
            }
            var list = new List <string>();
            var str2 = path1.ToLower();

            if (assetsItemArray != null)
            {
                foreach (var assetsItem in assetsItemArray)
                {
                    var assetGuid = assetsItem.GetFieldValue <string>("guid");
                    var str3      = AssetDatabase.GUIDToAssetPath(assetGuid).ToLower();
                    if (str3.StartsWith("assets/plugins") || str3.Contains("standard assets") || str3.StartsWith(str2))
                    {
                        list.Add(assetGuid);
                    }
                }
            }
            else
            {
                foreach (var guid in guidArray)
                {
                    var str3 = AssetDatabase.GUIDToAssetPath(guid).ToLower();
                    if (str3.StartsWith("assets/plugins") || str3.Contains("standard assets") || str3.StartsWith(str2))
                    {
                        list.Add(guid);
                    }
                }
            }
            if (includeProjectSettings)
            {
                foreach (var path2 in Directory.GetFiles("ProjectSettings"))
                {
                    var str3 = AssetDatabase.AssetPathToGUID(path2);
                    if (str3.Length > 0)
                    {
                        list.Add(str3);
                    }
                }
            }
            var array = new string[list.Count];

            list.CopyTo(array);

            if (s_GuidListPostprocessCallback != null)
            {
                array = s_GuidListPostprocessCallback(array);
            }

            return(array);
        }