Cleanup code

Also remove redundant code, it is already handled correctly in subsequent function calls.

src/base/bittorrent/session.cpp

@@ -2090,12 +2090,9 @@ TorrentStatusReport Session::torrentStatusReport() const
     return m_torrentStatusReport;
 }
 
-// source - .torrent file path/url or magnet uri
-bool Session::addTorrent(QString source, const AddTorrentParams &params)
+bool Session::addTorrent(const QString &source, const AddTorrentParams &params)
 {
-    MagnetUri magnetUri(source);
-    if (magnetUri.isValid())
-        return addTorrent_impl(CreateTorrentParams(params), magnetUri);
+    // `source`: .torrent file path/url or magnet uri
 
     if (Utils::Misc::isUrl(source)) {
         LogMsg(tr("Downloading '%1', please wait...", "e.g: Downloading 'xxx.torrent', please wait...").arg(source));
@@ -2110,6 +2107,10 @@ bool Session::addTorrent(QString source, const AddTorrentParams &params)
         return true;
     }
 
+    const MagnetUri magnetUri {source};
+    if (magnetUri.isValid())
+        return addTorrent_impl(CreateTorrentParams(params), magnetUri);
+
     TorrentFileGuard guard(source);
     if (addTorrent_impl(CreateTorrentParams(params)
                         , MagnetUri(), TorrentInfo::loadFromFile(source))) {

src/base/bittorrent/session.h

@@ -469,7 +469,7 @@ namespace BitTorrent
         void banIP(const QString &ip);
 
         bool isKnownTorrent(const InfoHash &hash) const;
-        bool addTorrent(QString source, const AddTorrentParams &params = AddTorrentParams());
+        bool addTorrent(const QString &source, const AddTorrentParams &params = AddTorrentParams());
         bool addTorrent(const TorrentInfo &torrentInfo, const AddTorrentParams &params = AddTorrentParams());
         bool deleteTorrent(const QString &hash, bool deleteLocalFiles = false);
         bool loadMetadata(const MagnetUri &magnetUri);

src/gui/addnewtorrentdialog.cpp

@@ -227,7 +227,7 @@ void AddNewTorrentDialog::saveState()
     settings()->storeValue(KEY_EXPANDED, m_ui->toolButtonAdvanced->isChecked());
 }
 
-void AddNewTorrentDialog::show(QString source, const BitTorrent::AddTorrentParams &inParams, QWidget *parent)
+void AddNewTorrentDialog::show(const QString &source, const BitTorrent::AddTorrentParams &inParams, QWidget *parent)
 {
     AddNewTorrentDialog *dlg = new AddNewTorrentDialog(inParams, parent);
 
@@ -240,27 +240,27 @@ void AddNewTorrentDialog::show(QString source, const BitTorrent::AddTorrentParam
                 , dlg, &AddNewTorrentDialog::handleDownloadFinished);
         connect(handler, &Net::DownloadHandler::downloadFailed, dlg, &AddNewTorrentDialog::handleDownloadFailed);
         connect(handler, &Net::DownloadHandler::redirectedToMagnet, dlg, &AddNewTorrentDialog::handleRedirectedToMagnet);
+        return;
     }
-    else {
-        bool ok = false;
-        BitTorrent::MagnetUri magnetUri(source);
-        if (magnetUri.isValid())
-            ok = dlg->loadMagnet(magnetUri);
-        else
-            ok = dlg->loadTorrent(source);
-
-        if (ok)
+
+    const BitTorrent::MagnetUri magnetUri(source);
+    const bool isLoaded = magnetUri.isValid()
+        ? dlg->loadMagnet(magnetUri)
+        : dlg->loadTorrent(source);
+
+    if (isLoaded) {
 #ifdef Q_OS_MAC
-            dlg->exec();
+        dlg->exec();
 #else
-            dlg->open();
+        dlg->open();
 #endif
-        else
-            delete dlg;
+    }
+    else {
+        delete dlg;
     }
 }
 
-void AddNewTorrentDialog::show(QString source, QWidget *parent)
+void AddNewTorrentDialog::show(const QString &source, QWidget *parent)
 {
     show(source, BitTorrent::AddTorrentParams(), parent);
 }

src/gui/addnewtorrentdialog.h

@@ -68,8 +68,8 @@ public:
     static int savePathHistoryLength();
     static void setSavePathHistoryLength(int value);
 
-    static void show(QString source, const BitTorrent::AddTorrentParams &inParams, QWidget *parent);
-    static void show(QString source, QWidget *parent);
+    static void show(const QString &source, const BitTorrent::AddTorrentParams &inParams, QWidget *parent);
+    static void show(const QString &source, QWidget *parent);
 
 private slots:
     void showAdvancedSettings(bool show);

src/gui/mainwindow.cpp

@@ -38,7 +38,6 @@
 #include <QMimeData>
 #include <QProcess>
 #include <QPushButton>
-#include <QRegularExpression>
 #include <QScrollBar>
 #include <QShortcut>
 #include <QSplitter>
@@ -1628,11 +1627,7 @@ void MainWindow::showNotificationBaloon(QString title, QString msg) const
 void MainWindow::downloadFromURLList(const QStringList &urlList)
 {
     const bool useTorrentAdditionDialog = AddNewTorrentDialog::isEnabled();
-    for (QString url : urlList) {
-        if (((url.size() == 40) && !url.contains(QRegularExpression("[^0-9A-Fa-f]")))
-            || ((url.size() == 32) && !url.contains(QRegularExpression("[^2-7A-Za-z]"))))
-            url = "magnet:?xt=urn:btih:" + url;
-
+    for (const QString &url : urlList) {
         if (useTorrentAdditionDialog)
             AddNewTorrentDialog::show(url, this);
         else