Remove empty folders on torrent soft deletion

Code clean up

src/misc.cpp

@@ -557,19 +557,6 @@ bool misc::isPreviewable(QString extension){
   return false;
 }
 
-bool misc::removeEmptyTree(QString path) {
-  QDir dir(path);
-  foreach(const QString &child, dir.entryList(QDir::AllDirs)) {
-    if(child == "." || child == "..") continue;
-    return removeEmptyTree(dir.absoluteFilePath(child));
-  }
-  const QString dir_name = dir.dirName();
-  if(dir.cdUp()) {
-    return dir.rmdir(dir_name);
-  }
-  return false;
-}
-
 QString misc::bcLinkToMagnet(QString bc_link) {
   QByteArray raw_bc = bc_link.toUtf8();
   raw_bc = raw_bc.mid(8); // skip bc://bt/
@@ -759,3 +746,9 @@ bool misc::isValidTorrentFile(const QString &torrent_path) {
   }
   return true;
 }
+
+QString misc::branchPath(QString file_path)
+{
+  file_path.replace("\\", "/");
+  return file_path.left(file_path.lastIndexOf('/'));
+}

src/misc.h

@@ -179,7 +179,7 @@ public:
   // value must be given in bytes
   static QString friendlyUnit(double val);
   static bool isPreviewable(QString extension);
-  static bool removeEmptyTree(QString path);
+  static QString branchPath(QString file_path);
   static QString magnetUriToName(QString magnet_uri);
   static QString magnetUriToHash(QString magnet_uri);
   static QString bcLinkToMagnet(QString bc_link);

src/properties/propertieswidget.cpp

@@ -640,7 +640,8 @@ void PropertiesWidget::renameSelectedFile() {
       // Remove old folder
       const QDir old_folder(h.save_path()+"/"+old_path);
       int timeout = 10;
-      while(!misc::removeEmptyTree(old_folder.absolutePath()) && timeout > 0) {
+      while(!QDir().rmpath(old_folder.absolutePath()) && timeout > 0) {
+        // XXX: We should not sleep here (freezes the UI for 1 second)
         SleeperThread::msleep(100);
         --timeout;
       }

src/qtlibtorrent/qbtsession.cpp

@@ -281,7 +281,7 @@ void QBtSession::configureSession() {
   int i = 0;
   foreach (const QString &dir, scan_dirs) {
     qDebug() << "Adding scan dir" << dir << downloadInDirList.at(i);
-    ScanFoldersModel::PathStatus ret = m_scanFolders->addPath(dir, downloadInDirList.at(i));
+    m_scanFolders->addPath(dir, downloadInDirList.at(i));
     ++i;
   }
   // * Export Dir
@@ -672,6 +672,9 @@ void QBtSession::deleteTorrent(QString hash, bool delete_local_files) {
     foreach(const QString &uneeded_file, uneeded_files) {
       qDebug("Removing uneeded file: %s", qPrintable(uneeded_file));
       misc::safeRemove(uneeded_file);
+      const QString parent_folder = misc::branchPath(uneeded_file);
+      qDebug("Attempt to remove parent folder (if empty): %s", qPrintable(parent_folder));
+      QDir().rmpath(parent_folder);
     }
   }
   // Remove it from torrent backup directory
@@ -2037,14 +2040,14 @@ void QBtSession::readAlerts() {
 #endif
       if(!hash.isEmpty()) {
         if(savePathsToRemove.contains(hash)) {
-          misc::removeEmptyTree(savePathsToRemove.take(hash));
+          QDir().rmpath(savePathsToRemove.take(hash));
         }
       } else {
         // XXX: Fallback
         QStringList hashes_deleted;
         foreach(const QString& key, savePathsToRemove.keys()) {
           // Attempt to delete
-          misc::removeEmptyTree(savePathsToRemove[key]);
+          QDir().rmpath(savePathsToRemove[key]);
           if(!QDir(savePathsToRemove[key]).exists()) {
             hashes_deleted << key;
           }
@@ -2065,7 +2068,7 @@ void QBtSession::readAlerts() {
         QDir old_save_dir(old_save_path);
         if(old_save_dir != QDir(defaultSavePath) && old_save_dir != QDir(defaultTempPath)) {
           qDebug("Attempting to remove %s", qPrintable(old_save_path));
-          misc::removeEmptyTree(old_save_path);
+          QDir().rmpath(old_save_path);
         }
         if(defaultTempPath.isEmpty() || !new_save_path.startsWith(defaultTempPath)) {
           qDebug("Storage has been moved, updating save path to %s", qPrintable(new_save_path));