wide string refactor

src/helper_funcs.h

@@ -9,8 +9,22 @@ void safe_exit(int code);
 std::string bool_to_string(bool bool_in);
 std::string SoRAuthFile(bool save, std::string data);
 void get_input_and_login();
+
+// Original functions
 void print_in_middle(WINDOW *win, int starty, int startx, int width,
                      char *string, chtype color);
 std::string rm_tr_le_whitespace(const std::string &s);
 
+// Wide character support functions
+void wprint_in_middle(WINDOW *win, int starty, int startx, int width,
+                      wchar_t *string, chtype color);
+std::wstring wrm_tr_le_whitespace(const std::wstring &s);
+
+// Conversion utilities
+char *wchar_to_char(wchar_t *src);
+wchar_t *char_to_wchar(char *src);
+
+std::wstring string_to_wstring(const std::string &str);
+std::string wstring_to_string(const std::wstring &wstr);
+
 #endif