feat: leaveOpen flag for bundle reading

Author: Misaka-L

AssetTools.NET/Extra/AssetsManager/AssetsManager.Bundle.cs

@@ -14,14 +14,14 @@ public partial class AssetsManager
         /// <param name="path">The path to set on the <see cref="AssetsFileInstance"/>.</param>
         /// <param name="unpackIfPacked">Unpack the bundle if it's compressed?</param>
         /// <returns>The loaded <see cref="BundleFileInstance"/>.</returns>
-        public BundleFileInstance LoadBundleFile(Stream stream, string path, bool unpackIfPacked = true)
+        public BundleFileInstance LoadBundleFile(Stream stream, string path, bool unpackIfPacked = true, bool leaveOpen = false)
         {
             BundleFileInstance bunInst;
             string lookupKey = GetFileLookupKey(path);
             if (BundleLookup.TryGetValue(lookupKey, out bunInst))
                 return bunInst;
 
-            bunInst = new BundleFileInstance(stream, path, unpackIfPacked);
+            bunInst = new BundleFileInstance(stream, path, unpackIfPacked, leaveOpen);
             lock (BundleLookup)
             {
                 lock (Bundles)

AssetTools.NET/Extra/AssetsManager/BundleFileInstance.cs

@@ -20,12 +20,12 @@ public class BundleFileInstance
         public Stream BundleStream => file.Reader.BaseStream;
         public Stream DataStream => file.DataReader.BaseStream;
 
-        public BundleFileInstance(Stream stream, string filePath, bool unpackIfPacked = true)
+        public BundleFileInstance(Stream stream, string filePath, bool unpackIfPacked = true, bool leaveOpen = false)
         {
             path = Path.GetFullPath(filePath);
             name = Path.GetFileName(path);
             file = new AssetBundleFile();
-            file.Read(new AssetsFileReader(stream));
+            file.Read(new AssetsFileReader(stream, leaveOpen));
             if (file.Header != null && file.DataIsCompressed && unpackIfPacked)
             {
                 file = BundleHelper.UnpackBundle(file);