From 8386743454bb8f409f422891ccab5749dd1dcdd8 Mon Sep 17 00:00:00 2001
From: Selina Lin <dev@lin.tf>
Date: Wed, 25 Oct 2023 21:48:00 +0200
Subject: [PATCH] Add check if `currentName` has an occurrence in `thisPath`

---
 .../java/com/amaze/filemanager/filesystem/HybridFile.java   | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/app/src/main/java/com/amaze/filemanager/filesystem/HybridFile.java b/app/src/main/java/com/amaze/filemanager/filesystem/HybridFile.java
index 649143bc6f..e351f42312 100644
--- a/app/src/main/java/com/amaze/filemanager/filesystem/HybridFile.java
+++ b/app/src/main/java/com/amaze/filemanager/filesystem/HybridFile.java
@@ -555,7 +555,11 @@ public String getParent(Context context) {
         if (thisPath.isEmpty() || pathSegments.isEmpty()) return null;
 
         String currentName = pathSegments.get(pathSegments.size() - 1);
-        String parent = thisPath.substring(0, thisPath.lastIndexOf(currentName));
+        int currentNameStartIndex = thisPath.lastIndexOf(currentName);
+        if (currentNameStartIndex < 0) {
+          return null;
+        }
+        String parent = thisPath.substring(0, currentNameStartIndex);
         if (ArraysKt.any(ANDROID_DATA_DIRS, dir -> parent.endsWith(dir + "/"))) {
           return FileProperties.unmapPathForApi30OrAbove(parent);
         } else {