tree and document plug-ins

src/ifcgeom/mapping_plugin.cpp

@@ -0,0 +1,57 @@
+/********************************************************************************
+ *                                                                              *
+ * This file is part of IfcOpenShell.                                           *
+ *                                                                              *
+ * IfcOpenShell is free software: you can redistribute it and/or modify         *
+ * it under the terms of the Lesser GNU General Public License as published by  *
+ * the Free Software Foundation, either version 3.0 of the License, or          *
+ * (at your option) any later version.                                          *
+ *                                                                              *
+ * IfcOpenShell 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                 *
+ * Lesser GNU General Public License for more details.                          *
+ *                                                                              *
+ * You should have received a copy of the Lesser GNU General Public License     *
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.         *
+ *                                                                              *
+ ********************************************************************************/
+
+#include "mapping_plugin.h"
+
+#include <boost/algorithm/string/case_conv.hpp>
+
+namespace {
+	constexpr const char* mapping_plugin_prefix = "geometry.mapping.";
+}
+
+const char* ifcopenshell::geometry::impl::mapping_plugin_registration_symbol() {
+	return "ifcopenshell_register_mapping_plugin_v1";
+}
+
+ifcopenshell::plugin::metadata ifcopenshell::geometry::impl::mapping_plugin_metadata(const std::string& schema_name) {
+	plugin::metadata metadata;
+	metadata.kind_ = plugin::kind::mapping;
+	metadata.id = mapping_plugin_prefix + boost::to_lower_copy(schema_name);
+	metadata.schema = boost::to_upper_copy(schema_name);
+	return metadata;
+}
+
+std::filesystem::path ifcopenshell::geometry::impl::mapping_plugin_directory() {
+	return plugin::module_directory(reinterpret_cast<const void*>(&ifcopenshell::geometry::impl::load_mapping_plugins));
+}
+
+void ifcopenshell::geometry::impl::load_mapping_plugins(mapping_registry& registry) {
+	plugin::manager manager;
+	manager.add_search_path(mapping_plugin_directory());
+
+	for (const auto& path : manager.discover(mapping_plugin_prefix)) {
+		auto module = manager.load(path);
+		if (module.meta().kind_ != plugin::kind::mapping) {
+			continue;
+		}
+
+		auto register_plugin = module.get_alias<register_mapping_plugin_fn>(mapping_plugin_registration_symbol());
+		register_plugin(registry, module);
+	}
+}