Improve folder removal behavior

src/misc.cpp

@@ -799,3 +799,13 @@ QString misc::fileName(QString file_path)
     return file_path;
   return file_path.mid(slash_index+1);
 }
+
+bool misc::removeEmptyFolder(const QString &dirpath)
+{
+  QDir savedir(dirpath);
+  const QString dirname = savedir.dirName();
+  if(savedir.exists() && savedir.cdUp()) {
+    return savedir.rmdir(dirname);
+  }
+  return false;
+}

src/misc.h

@@ -123,6 +123,8 @@ public:
     return MyFile.remove();
   }
 
+  static bool removeEmptyFolder(const QString &dirpath);
+
   static quint64 computePathSize(QString path);
 
   static QString truncateRootFolder(boost::intrusive_ptr<libtorrent::torrent_info> t);

src/qtlibtorrent/qbtsession.cpp

@@ -2176,22 +2176,21 @@ void QBtSession::readAlerts() {
 #endif
       if(!hash.isEmpty()) {
         if(savePathsToRemove.contains(hash)) {
-          QDir().rmpath(savePathsToRemove.take(hash));
+          const QString dirpath = savePathsToRemove.take(hash);
+          qDebug() << "Removing save path: " << dirpath << "...";
+          bool ok = misc::removeEmptyFolder(dirpath);
+          Q_UNUSED(ok);
+          qDebug() << "Folder was removed: " << ok;
         }
       } else {
-        // XXX: Fallback
-        QStringList hashes_deleted;
+        // Fallback
+        qDebug() << "hash is empty, use fallback to remove save path";
         foreach(const QString& key, savePathsToRemove.keys()) {
           // Attempt to delete
-          QDir().rmpath(savePathsToRemove[key]);
-          if(!QDir(savePathsToRemove[key]).exists()) {
-            hashes_deleted << key;
+          if(misc::removeEmptyFolder(savePathsToRemove[key])) {
+            savePathsToRemove.remove(key);
           }
         }
-        // Clean up
-        foreach(const QString& key, hashes_deleted) {
-          savePathsToRemove.remove(key);
-        }
       }
     }
     else if (storage_moved_alert* p = dynamic_cast<storage_moved_alert*>(a.get())) {