Localize error messages in mainmenu (#11495)

[minetest.git] / src / gettext.h

diff --git a/src/gettext.h b/src/gettext.h
index 5a3654be45e2a406f34f9949903ff6f9f7dfe700..67fd9244fc1e63f8084a032c4007830a011e6430 100644 (file)
--- a/src/gettext.h
+++ b/src/gettext.h
@@ -21,6 +21,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 
 #include "config.h" // for USE_GETTEXT
 #include <string>
+#include "porting.h"
 
 #if USE_GETTEXT
        #include <libintl.h>
@@ -77,3 +78,31 @@ inline std::wstring fwgettext(const char *src, Args&&... args)
        delete[] str;
        return std::wstring(buf);
 }
+
+/**
+ * Returns translated string with format args applied
+ *
+ * @tparam Args Template parameter for format args
+ * @param format Translation source string
+ * @param args Variable format args
+ * @return translated string.
+ */
+template <typename ...Args>
+inline std::string fmtgettext(const char *format, Args&&... args)
+{
+       std::string buf;
+       std::size_t buf_size = 256;
+       buf.resize(buf_size);
+
+       format = gettext(format);
+
+       int len = porting::mt_snprintf(&buf[0], buf_size, format, std::forward<Args>(args)...);
+       if (len <= 0) throw std::runtime_error("gettext format error: " + std::string(format));
+       if ((size_t)len >= buf.size()) {
+               buf.resize(len+1); // extra null byte
+               porting::mt_snprintf(&buf[0], buf.size(), format, std::forward<Args>(args)...);
+       }
+       buf.resize(len); // remove null bytes
+
+       return buf;
+}