refactor(editor): shared plan geometry and formatting helpers

editor/editorFormat.hpp

@@ -0,0 +1,26 @@
+/*
+This Source Code Form is subject to the
+terms of the Mozilla Public License, v.
+2.0. If a copy of the MPL was not
+distributed with this file, You can
+obtain one at
+http://mozilla.org/MPL/2.0/.
+*/
+
+#pragma once
+
+#include <cstdio>
+#include <string>
+
+// printf-style formatting into a string, for the messages and the data lines of the editor
+template <typename... Args>
+std::string format(char const *Format, Args... Arguments)
+{
+	auto const length{std::snprintf(nullptr, 0, Format, Arguments...)};
+	if (length <= 0)
+		return {};
+	std::string text(static_cast<std::size_t>(length) + 1, '\0');
+	std::snprintf(text.data(), text.size(), Format, Arguments...);
+	text.resize(static_cast<std::size_t>(length));
+	return text;
+}