Implemented a basic translation system

include/Translation.hpp

@@ -0,0 +1,36 @@
+#pragma once
+
+#include <string>
+#include <unordered_map>
+
+namespace gsr {
+    class Translation {
+    public:
+        static Translation& instance();
+        void init(const char* translations_directory, const char* initial_language = nullptr);
+        bool load_language(const char* lang);
+        const char* translate(const char* key);
+
+        template<typename... Args>
+        std::string format(const char* key, Args&&... args) {
+            const char* fmt = translate(key);
+
+            // result buffer
+            char buffer[4096];
+            snprintf(buffer, sizeof(buffer), fmt, std::forward<Args>(args)...);
+            return std::string(buffer);
+        }
+
+    private:
+        std::string get_system_language();
+        std::string trim(const std::string& str);
+
+    private:
+        std::string translations_directory;
+        std::string current_language = "en";
+        std::unordered_map<std::string, std::string> translations;
+    };
+}
+
+#define TR(s) gsr::Translation::instance().translate(s)
+#define TRF(s, ...) gsr::Translation::instance().format(s, __VA_ARGS__)