temp fix

UnityAsset.NET/BundleFile/BundleFile.cs

@@ -42,18 +42,30 @@ public sealed class BundleFile
 
     private ArchiveFlags mask { get; set; }
 
-    public BundleFile(string path, bool original = false, string? key = null)
-        : this(new FileStream(path, FileMode.Open, FileAccess.Read), original, key)
+    public BundleFile(string path, string? key = null)
+        : this(new FileStream(path, FileMode.Open, FileAccess.Read), key)
     {
     }
 
-    public BundleFile(Stream input, bool original = false, string? key = null)
+    public BundleFile(Stream input, string? key = null)
     {
         using AssetReader reader = new AssetReader(input);
 
         UnityCNKey = key;
 
         Header = new Header(reader);
+        ReadBundleWithHeader(reader, Header, key);
+    }
+
+    public BundleFile(AssetReader reader,Header header, string? key = null)
+    {
+        UnityCNKey = key;
+        Header = header;
+        ReadBundleWithHeader(reader, header, key);
+    }
+
+    private void ReadBundleWithHeader(AssetReader reader, Header header, string? key = null)
+    {
         var version = ParseVersion();
 
         if (version[0] < 2020 || //2020 and earlier

UnityAsset.NET/IO/AssetReader.cs

@@ -31,6 +31,13 @@ public AssetReader(Stream stream, bool isBigEndian = true) : base(stream)
         StartPosition = stream.Position;
     }
 
+    public AssetReader(string filePath, bool isBigEndian = true) : base(new FileStream(filePath, FileMode.Open, FileAccess.Read))
+    {
+        buffer = new byte[8];
+        BigEndian = isBigEndian;
+        StartPosition = 0;
+    }
+
     public void AlignStream(int alignment)
     {
         var pos = Position;