Be able to do a dry-run scan

src/libtomahawk/filemetadata/MusicScanner.cpp

@@ -137,6 +137,7 @@ MusicScanner::MusicScanner( MusicScanner::ScanMode scanMode, const QStringList&
     , m_scanMode( scanMode )
     , m_paths( paths )
     , m_showProgress( true )
+    , m_updateIndex( true )
     , m_cmdQueue( 0 )
     , m_batchsize( bs )
     , m_dirListerThreadController( 0 )
@@ -173,6 +174,20 @@ MusicScanner::showingProgress()
 }
 
 
+void
+MusicScanner::updateIndex( bool _updateIndex )
+{
+    m_updateIndex = _updateIndex;
+}
+
+
+bool
+MusicScanner::updatingIndex()
+{
+    return m_updateIndex;
+}
+
+
 void
 MusicScanner::startScan()
 {
@@ -264,8 +279,11 @@ MusicScanner::postOps()
 
     if ( m_filesToDelete.length() || m_scannedfiles.length() )
     {
-        SourceList::instance()->getLocal()->updateIndexWhenSynced();
+        if ( m_updateIndex )
-        commitBatch( m_scannedfiles, m_filesToDelete );
+        {
+            SourceList::instance()->getLocal()->updateIndexWhenSynced();
+            commitBatch( m_scannedfiles, m_filesToDelete );
+        }
         m_scannedfiles.clear();
         m_filesToDelete.clear();
     }

src/libtomahawk/filemetadata/MusicScanner.h

@@ -110,6 +110,12 @@ public:
     void showProgress( bool _showProgress );
     bool showingProgress();
 
+    /**
+     * Specify if the search index should be updated or if we only want a dry run.
+     */
+    void updateIndex( bool _updateIndex );
+    bool updatingIndex();
+
 signals:
     //void fileScanned( QVariantMap );
     void finished();
@@ -137,6 +143,7 @@ private:
     unsigned int m_scanned;
     unsigned int m_skipped;
     bool m_showProgress;
+    bool m_updateIndex;
 
     QList<QString> m_skippedFiles;
     QMap<QString, QMap< unsigned int, unsigned int > > m_filemtimes;