Method SaveCurves

libraries/lib-builtin-effects/EqualizationCurves.cpp:282–319

Save curves to external file

// Save curves to external file
//
void EQCurveWriter::SaveCurves(const wxString &fileName)
{
   wxFileName fn;
   if( fileName.empty() )
   {
      // Construct default curve filename
      //
      // LLL:  Wouldn't you know that as of WX 2.6.2, there is a conflict
      //       between wxStandardPaths and wxConfig under Linux.  The latter
      //       creates a normal file as "$HOME/.audacity", while the former
      //       expects the ".audacity" portion to be a directory.
      fn = wxFileName( FileNames::DataDir(), wxT("EQCurves.xml") );

      // If the directory doesn't exist...
      if( !fn.DirExists() )
      {
         // Attempt to create it
         if( !fn.Mkdir( fn.GetPath(), 511, wxPATH_MKDIR_FULL ) )
         {
            // MkDir() will emit message
            return;
         }
      }
   }
   else
      fn = fileName;

   GuardedCall( [&] {
      // Create/Open the file
      const wxString fullPath{ fn.GetFullPath() };
      XMLFileWriter eqFile{ fullPath, XO("Error Saving Equalization Curves") };

      // Write the curves
      WriteXML( eqFile );

      eqFile.Commit();
   } );
}

//
// Process XML tags and handle the ones we recognize