modified algo filling treeview to speed

mainwindow.h

@@ -31,6 +31,7 @@
 #include <QShortcut>
 #include <QCloseEvent>
 #include <unistd.h>
+#include <magic.h>
 
 QT_BEGIN_NAMESPACE
 namespace Ui { class MainWindow; }
@@ -52,7 +53,6 @@ class Downloading
         std::string path;
         std::string defaultSavePath;
         std::string savePath;
-        QString dirPath;
         int pid = 0;
 };
 
@@ -78,13 +78,13 @@ class MainWindow : public QMainWindow
         ~MainWindow();
         QProgressDialog *progress;
         void displayTree();
-        void populateTree();
+        void populateTree(QTreeWidgetItem * parent);
         void populateList();
         void listServices();
         bool validateServer(std::string server);
         bool isIpAddress(std::string server);
-        QTreeWidgetItem * addTreeRoot(QString name, QString description);
-        QTreeWidgetItem * addTreeChild(QTreeWidgetItem *parent, QString name, QString size);
+        QTreeWidgetItem * addTreeRoot(QString name, QString description, bool isDir);
+        QTreeWidgetItem * addTreeChild(QTreeWidgetItem *parent, QString name, QString size, bool isDir);
         void scanDir(std::string server, int portN, QTreeWidgetItem *parent = NULL, std::string path = "" );
         void startDownloading();
         void loadSettings();
@@ -99,6 +99,13 @@ class MainWindow : public QMainWindow
         QDialog Configuration;
         Ui::Configuration config;
         std::vector <QString> serversList;
+        map<char, int> bwUnixIndex {
+            {'B', 0},
+            {'K', 1},
+            {'M', 2},
+            {'G', 3},
+            {'P', 4}
+        };
 
     private slots: