HostInterface: Create user directories on startup

src/core/host_interface.cpp

@@ -53,6 +53,7 @@ static std::string GetRelativePath(const std::string& path, const char* new_file
 HostInterface::HostInterface()
 {
   SetUserDirectory();
+  CreateUserDirectorySubdirectories();
   m_game_list = std::make_unique<GameList>();
   m_game_list->SetCacheFilename(GetGameListCacheFileName());
   m_game_list->SetDatabaseFilename(GetGameListDatabaseFileName());
@@ -464,6 +465,16 @@ void HostInterface::SetUserDirectory()
   }
 }
 
+void HostInterface::CreateUserDirectorySubdirectories()
+{
+  bool result = true;
+
+  result &= FileSystem::CreateDirectory(GetUserDirectoryRelativePath("cache").c_str(), false);
+
+  if (!result)
+    ReportError("Failed to create one or more user directories. This may cause issues at runtime.");
+}
+
 std::string HostInterface::GetUserDirectoryRelativePath(const char* format, ...) const
 {
   std::va_list ap;

src/core/host_interface.h

@@ -90,6 +90,9 @@ protected:
 
   void SetUserDirectory();
 
+  /// Ensures all subdirectories of the user directory are created.
+  void CreateUserDirectorySubdirectories();
+
   /// Returns the path of the settings file.
   std::string GetSettingsFileName() const;