Generates a .dot GraphViz

entt_organizer_graph_to_dot.cpp

// Generates a .dot GraphViz
// license is CC0 (this means public domain in most countries)

std::ostream& operator<<(std::ostream& out, const std::vector<entt::organizer::vertex>& nodes) {
	out << "digraph EnTT_organizer {\n";


	for (size_t i = 0; i < nodes.size(); i++) {
		out << "n" << i << "[label=\"" << (nodes[i].name() == nullptr ? "NoName" : nodes[i].name()) << "\"];\n";
	}

	for (size_t i = 0; i < nodes.size(); i++) {
		for (const size_t child : nodes[i].children()) {
			out << "n" << child << " -> " << "n" << i << ";\n";
		}
	}

	out << "}";
	return out;
}

std::ostream& operator<<(std::ostream& out, /*const*/ entt::organizer& org) {
	const auto nodes = org.graph();
	out << nodes;
	return out;
}