1 files changed, 46 insertions, 0 deletions
diff --git a/src/SMAPI.Toolkit/Utilities/FileUtilities.cs b/src/SMAPI.Toolkit/Utilities/FileUtilities.cs
new file mode 100644
index 00000000..7856fdb1
--- /dev/null
+++ b/src/SMAPI.Toolkit/Utilities/FileUtilities.cs
@@ -0,0 +1,46 @@
+using System.IO;
+using System.Threading;
+
+namespace StardewModdingAPI.Toolkit.Utilities
+{
+    /// <summary>Provides utilities for dealing with files.</summary>
+    public static class FileUtilities
+    {
+        /*********
+        ** Public methods
+        *********/
+        /// <summary>Delete a file or folder regardless of file permissions, and block until deletion completes.</summary>
+        /// <param name="entry">The file or folder to reset.</param>
+        public static void ForceDelete(FileSystemInfo entry)
+        {
+            // ignore if already deleted
+            entry.Refresh();
+            if (!entry.Exists)
+                return;
+
+            // delete children
+            if (entry is DirectoryInfo folder)
+            {
+                foreach (FileSystemInfo child in folder.GetFileSystemInfos())
+                    FileUtilities.ForceDelete(child);
+            }
+
+            // reset permissions & delete
+            entry.Attributes = FileAttributes.Normal;
+            entry.Delete();
+
+            // wait for deletion to finish
+            for (int i = 0; i < 10; i++)
+            {
+                entry.Refresh();
+                if (entry.Exists)
+                    Thread.Sleep(500);
+            }
+
+            // throw exception if deletion didn't happen before timeout
+            entry.Refresh();
+            if (entry.Exists)
+                throw new IOException($"Timed out trying to delete {entry.FullName}");
+        }
+    }
+}