A really retarded design pattern to copy items from streaming assets to local storage...

2026-07-27 22:11:39 +00:00 · 2022-01-27 23:18:30 +08:00
parent fda9f4be60
commit 13a6024644
3 changed files with 104 additions and 13 deletions
@@ -1,13 +0,0 @@
-using System.Collections;
-using System.Collections.Generic;
-using UnityEngine;
-
-public class AndroidCopyStreamingAssetsToPersistentDataPath : MonoBehaviour
-{
-
-    [RuntimeInitializeOnLoadMethod(RuntimeInitializeLoadType.AfterSceneLoad)]
-    public void init()
-    {
-
-    }
-}
@@ -0,0 +1,104 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using OpenMetaverse.ImportExport.Collada14;
+using UnityEngine;
+using UnityEngine.Serialization;
+
+// on every boot, as soon as possible,
+// copy any missing/changed items in streaming assets to the data path in user-accessible-space
+namespace Disk
+{
+    public class CopyStreamingAssetsToPersistentDataPath : MonoBehaviour
+    {
+        [FormerlySerializedAs("doneCopy")] public bool copyIsDone = false;
+
+        private void Awake()
+        {
+            BetterStreamingAssets.Initialize(); //fuck, this is easy to forget.
+        
+            CheckOmvDataFolderAndUpdateItIfNecessary();
+            copyIsDone = true;
+        }
+
+        private void CheckOmvDataFolderAndUpdateItIfNecessary()
+        {
+            List<string> updatedFiles = ScanAndCopy_StreamingAssetsFolder(
+                DirectoryHelpers.GetInternalCacheDir()
+            );
+        
+            if (updatedFiles.Count > 0)
+            {
+                var printString = String.Join(Environment.NewLine, updatedFiles);
+                Debug.Log("there were some updates to staticAssets in : " 
+                          + Environment.NewLine 
+                          + printString);
+            }
+            else
+            {
+                Debug.Log("staticAssets are already latest version in : " 
+                          + DirectoryHelpers.GetInternalCacheDir());
+            }
+        
+        }
+
+        // scan all files in streamingAssets folder, and copy any changed/missing files into userDataRoot.
+        // return true if some file was updated.
+        private List<string> ScanAndCopy_StreamingAssetsFolder(string appRootPath)
+        {
+            List<String> updatedFiles = new List<string>();
+            // bool someFileWasUpdated = false;
+
+            //everything in StreamingAssets\
+            Debug.Assert( BetterStreamingAssets.DirectoryExists("\\") );
+            string[] paths = BetterStreamingAssets.GetFiles("\\", "*", SearchOption.AllDirectories);
+
+            foreach (var sourcePath in paths)
+            {
+                string relativePath = "";
+            
+                //find the equivalent path in appRootPath 
+                string root = Directory.GetDirectoryRoot(sourcePath); // this is \StreamingAssets\, which we wish to remove.
+                if (root != null/*todo: check for failed get root.*/)
+                {
+                    relativePath = sourcePath.Substring(root.Length - 1); // gotta remove that \
+                }
+                
+                string targetPath = Path.Combine(appRootPath, relativePath);
+                if (!File.Exists(targetPath))
+                {
+                    updatedFiles.Add(targetPath);
+                    DirectoryHelpers.WriteToFile(
+                        BetterStreamingAssets.ReadAllBytes(sourcePath),
+                        targetPath);
+                }
+
+                using (Stream fs1 = File.OpenRead(targetPath))
+                using (Stream fs2 = BetterStreamingAssets.OpenRead(sourcePath))
+                {
+                    if (FilesStreamsAreSame(fs1, fs2))
+                    {
+                        //do nothing
+                    }
+                    else
+                    {
+                        updatedFiles.Add(targetPath);
+                        DirectoryHelpers.WriteToFile(
+                            BetterStreamingAssets.ReadAllBytes(sourcePath),
+                            targetPath);
+                    }
+                }
+
+            }
+
+            return updatedFiles;
+        }
+
+        // true if same data in both files.
+        // false if either source or dest file is missing
+        private bool FilesStreamsAreSame(Stream fs1, Stream fs2)
+        {
+            return FileHelpers.FileStreamsAreEqual(fs1, fs2);
+        }
+    }
+}