ADDED: A new IPC API based on protobuf and nng

Details, documentation, and language bindings are works in
progress and will be evolving over the course of KiCad 9
development.

common/api/api_handler_common.cpp

@@ -0,0 +1,52 @@
+/*
+ * This program source code file is part of KiCad, a free EDA CAD application.
+ *
+ * Copyright (C) 2023 Jon Evans <[email protected]>
+ * Copyright (C) 2023 KiCad Developers, see AUTHORS.txt for contributors.
+ *
+ * This program is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation, either version 3 of the License, or (at your
+ * option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <tuple>
+
+#include <api/api_handler_common.h>
+#include <build_version.h>
+#include <pgm_base.h>
+#include <wx/string.h>
+
+using namespace kiapi::common::commands;
+using namespace kiapi::common::types;
+using google::protobuf::Empty;
+
+
+API_HANDLER_COMMON::API_HANDLER_COMMON() :
+        API_HANDLER()
+{
+    registerHandler<GetVersion, GetVersionResponse>( &API_HANDLER_COMMON::handleGetVersion );
+}
+
+
+HANDLER_RESULT<GetVersionResponse> API_HANDLER_COMMON::handleGetVersion( GetVersion& aMsg )
+{
+    GetVersionResponse reply;
+
+    reply.mutable_version()->set_full_version( GetBuildVersion().ToStdString() );
+
+    std::tuple<int, int, int> version = GetMajorMinorPatchTuple();
+    reply.mutable_version()->set_major( std::get<0>( version ) );
+    reply.mutable_version()->set_minor( std::get<1>( version ) );
+    reply.mutable_version()->set_patch( std::get<2>( version ) );
+
+    return reply;
+}