Fix some UTF8 issues with project settings

Fixes https://gitlab.com/kicad/code/kicad/-/issues/4808

common/settings/json_settings.cpp

@@ -153,7 +153,8 @@ bool JSON_SETTINGS::LoadFromFile( const std::string& aDirectory )
     }
     else
     {
-        path.Assign( aDirectory, m_filename, getFileExt() );
+        wxString dir( aDirectory.c_str(), wxConvUTF8 );
+        path.Assign( dir, m_filename, getFileExt() );
     }
 
     if( !path.Exists() )
@@ -182,7 +183,7 @@ bool JSON_SETTINGS::LoadFromFile( const std::string& aDirectory )
     {
         try
         {
-            std::ifstream in( path.GetFullPath().ToStdString() );
+            std::ifstream in( path.GetFullPath().ToUTF8() );
             in >> *this;
 
             // If parse succeeds, check if schema migration is required
@@ -294,7 +295,8 @@ bool JSON_SETTINGS::SaveToFile( const std::string& aDirectory, bool aForce )
     }
     else
     {
-        path.Assign( aDirectory, m_filename, getFileExt() );
+        wxString dir( aDirectory.c_str(), wxConvUTF8 );
+        path.Assign( dir, m_filename, getFileExt() );
     }
 
     if( !m_createIfMissing && !path.FileExists() )
@@ -338,7 +340,7 @@ bool JSON_SETTINGS::SaveToFile( const std::string& aDirectory, bool aForce )
 
     try
     {
-        std::ofstream file( path.GetFullPath().ToStdString() );
+        std::ofstream file( path.GetFullPath().ToUTF8() );
         file << std::setw( 2 ) << *this << std::endl;
     }
     catch( const std::exception& e )
@@ -551,4 +553,4 @@ void to_json( nlohmann::json& aJson, const wxString& aString )
 void from_json( const nlohmann::json& aJson, wxString& aString )
 {
     aString = wxString( aJson.get<std::string>().c_str(), wxConvUTF8 );
-}
+}

common/settings/settings_manager.cpp

@@ -706,7 +706,7 @@ bool SETTINGS_MANAGER::LoadProject( const wxString& aFullPath, bool aSetActive )
 
     m_projects[fullPath].reset( project.release() );
 
-    std::string fn( path.GetName() );
+    std::string fn( path.GetName().ToUTF8() );
 
     PROJECT_LOCAL_SETTINGS* settings = static_cast<PROJECT_LOCAL_SETTINGS*>(
             RegisterSettings( new PROJECT_LOCAL_SETTINGS( fn ) ) );
@@ -783,7 +783,9 @@ bool SETTINGS_MANAGER::loadProjectFile( PROJECT& aProject )
     aProject.setProjectFile( file );
     file->SetProject( &aProject );
 
-    return file->LoadFromFile( std::string( fullFn.GetPath().ToUTF8() ) );
+    std::string path( fullFn.GetPath().ToUTF8() );
+
+    return file->LoadFromFile( path );
 }
 
 

include/project/project_local_settings.h

@@ -62,6 +62,11 @@ protected:
         return ProjectLocalSettingsFileExtension;
     }
 
+    wxString getLegacyFileExt() const override
+    {
+        return wxT( "NO_SUCH_FILE_EXTENSION" );
+    }
+
 private:
 
     /// A link to the owning project

kicad/treeprojectfiles.cpp

@@ -94,6 +94,9 @@ int TREEPROJECTFILES::OnCompareItems( const wxTreeItemId& item1, const wxTreeIte
     TREEPROJECT_ITEM* myitem1 = (TREEPROJECT_ITEM*) GetItemData( item1 );
     TREEPROJECT_ITEM* myitem2 = (TREEPROJECT_ITEM*) GetItemData( item2 );
 
+    if( !myitem1 || !myitem2 )
+        return 0;
+
     if( myitem1->GetType() == TREE_DIRECTORY && myitem2->GetType() != TREE_DIRECTORY )
         return -1;