Add QString version of GetRelativePathToClementineBin.

Avoid converting paths to and from URLs when calling this function.

src/core/utilities.cpp

@@ -726,8 +726,13 @@ bool UrlOnSameDriveAsClementine(const QUrl& url) {
 }
 
 QUrl GetRelativePathToClementineBin(const QUrl& url) {
+  QString relPath = GetRelativePathToClementineBin(url.toLocalFile());
+  return QUrl::fromLocalFile(relPath);
+}
+
+QString GetRelativePathToClementineBin(const QString& abspath) {
   QDir appPath(QCoreApplication::applicationDirPath());
-  return QUrl::fromLocalFile(appPath.relativeFilePath(url.toLocalFile()));
+  return appPath.relativeFilePath(abspath);
 }
 
 QString PathWithoutFilenameExtension(const QString& filename) {

src/core/utilities.h

@@ -118,6 +118,8 @@ bool UrlOnSameDriveAsClementine(const QUrl& url);
 // Get relative path to clementine binary
 QUrl GetRelativePathToClementineBin(const QUrl& url);
 
+QString GetRelativePathToClementineBin(const QString& abspath);
+
 // Get the path without the filename extension
 QString PathWithoutFilenameExtension(const QString& filename);
 QString FiddleFileExtension(const QString& filename,

src/library/librarybackend.cpp

@@ -218,8 +218,7 @@ void LibraryBackend::AddDirectory(const QString& path) {
 
   if (Application::kIsPortable && Utilities::UrlOnSameDriveAsClementine(
                                       QUrl::fromLocalFile(canonical_path))) {
-    db_path = Utilities::GetRelativePathToClementineBin(
-                  QUrl::fromLocalFile(db_path)).toLocalFile();
+    db_path = Utilities::GetRelativePathToClementineBin(db_path);
     qLog(Debug) << "db_path" << db_path;
   }
 

src/library/librarydirectorymodel.cpp

@@ -41,8 +41,8 @@ void LibraryDirectoryModel::DirectoryDiscovered(const Directory& dir) {
   QStandardItem* item;
   if (Application::kIsPortable &&
       Utilities::UrlOnSameDriveAsClementine(QUrl::fromLocalFile(dir.path))) {
-    item = new QStandardItem(Utilities::GetRelativePathToClementineBin(
-                                 QUrl::fromLocalFile(dir.path)).toLocalFile());
+    item =
+        new QStandardItem(Utilities::GetRelativePathToClementineBin(dir.path));
   } else {
     item = new QStandardItem(dir.path);
   }