public IEnumerable <AssetFile> BuildAssetsFileInstance(Stream stream)
        {
            List <AssetFile> result = new List <AssetFile>();

            classPackage = new ClassDatabasePackage();
            Console.WriteLine("Reading class-data...");
            using (var reader = new AssetsFileReader(new FileStream("classdata.tpk", FileMode.Open, FileAccess.Read, FileShare.Read))) {
                classPackage.Read(reader);
            }

            var file = new AssetBundleFile();

            activeBundleFile = file;
            Console.WriteLine("Reading bundleFileStream...");
            file.Read(new AssetsFileReader(stream), true);
            file.reader.Position = 0;
            Stream memoryStream = new MemoryStream();

            Console.WriteLine("Unpacking bundleFile...");
            file.Unpack(file.reader, new AssetsFileWriter(memoryStream));
            memoryStream.Position = 0;
            file.Close();
            file = new AssetBundleFile();
            file.Read(new AssetsFileReader(memoryStream));

            Console.WriteLine("file.bundleInf6.dirInf.Length: " + file.bundleInf6.dirInf.Length);

            for (int i = 0; i < file.bundleInf6.dirInf.Length; i++)
            {
                try {
                    if (file.IsAssetsFile(file.reader, file.bundleInf6.dirInf[i]))
                    {
                        byte[] assetData  = BundleHelper.LoadAssetDataFromBundle(file, i);
                        var    mainStream = new MemoryStream(assetData);
                        activeStreams.Add(mainStream);

                        string            mainName     = file.bundleInf6.dirInf[i].name;
                        var               fileInstance = new AssetsFileInstance(mainStream, mainName, "");
                        ClassDatabaseFile classDBFile  = LoadClassDatabaseFromPackage(fileInstance.file.typeTree.unityVersion);
                        if (classDBFile == null)
                        {
                            Console.WriteLine("classDatabaseFile was null? Okay, that's probably bad. Continuing anyway...");
                        }

                        result.Add(new AssetFile(fileInstance, classDBFile));
                    }
                } catch (Exception e) {
                    Console.WriteLine("caught exception while reading AssetsFile: " + e);
                    //guess it's not an assetsFile then?
                }
            }

            Console.WriteLine("found " + result.Count + " AssetFiles");

            return(result);
        }
 public ClassDatabasePackage LoadClassPackage(Stream stream)
 {
     classPackage = new ClassDatabasePackage();
     classPackage.Read(new AssetsFileReader(stream));
     return(classPackage);
 }