Method LoadProject

libraries/lib-project-file-io/ProjectFileIO.cpp:2036–2132

}

auto ProjectFileIO::LoadProject(const FilePath &fileName, bool ignoreAutosave)
   -> std::optional<TentativeConnection>
{
   auto now = std::chrono::high_resolution_clock::now();

   std::optional<TentativeConnection> result{ *this };

   bool success = false;

   // Open the project file
   if (!OpenConnection(fileName))
      return {};

   int64_t rowId = -1;

   bool useAutosave =
      !ignoreAutosave &&
      GetValue("SELECT ROWID FROM main.autosave WHERE id = 1;", rowId, true);

   int64_t rowsCount = 0;
   // If we didn't have an autosave doc, load the project doc instead
   if (
      !useAutosave &&
      (!GetValue("SELECT COUNT(1) FROM main.project;", rowsCount, true) || rowsCount == 0))
   {
      // Missing both the autosave and project docs. This can happen if the
      // system were to crash before the first autosave into a temporary file.
      // This should be a recoverable scenario.
      mRecovered = true;
      mModified = true;

      return result;
   }

   if (!useAutosave && !GetValue("SELECT ROWID FROM main.project WHERE id = 1;", rowId, false))
      return {};
   else
   {
      // Load 'er up
      BufferedProjectBlobStream stream(
         DB(), "main", useAutosave ? "autosave" : "project", rowId);

      success = ProjectSerializer::Decode(stream, this);

      if (!success)
      {
         SetError(
            XO("Unable to parse project information.")
         );
         return {};
      }

      // Check for orphans blocks...sets mRecovered if any were deleted

      auto blockids = WaveTrackFactory::Get( mProject )
         .GetSampleBlockFactory()
            ->GetActiveBlockIDs();
      if (blockids.size() > 0)