Formspec: add hypertext element

src/util/string.cpp

@@ -947,3 +947,28 @@ std::wstring translate_string(const std::wstring &s) {
 	translate_all(s, i, res);
 	return res;
 }
+
+/**
+ * Create a std::string from a irr::core:stringw.
+ */
+std::string strwtostr(const irr::core::stringw &str)
+{
+	std::string text = core::stringc(str.c_str()).c_str();
+	return text;
+}
+
+/**
+ * Create a irr::core:stringw from a std::string.
+ */
+irr::core::stringw strtostrw(const std::string &str)
+{
+	size_t size = str.size();
+	// s.size() doesn't include NULL terminator
+	wchar_t *text = new wchar_t[size + sizeof(wchar_t)];
+	const char *data = &str[0];
+
+	mbsrtowcs(text, &data, size, NULL);
+
+	text[size] = L'\0';
+	return text;
+}