-extern char *g_data_dir;
-extern char *g_score_file;
-extern mode_t g_score_mode;
-
-char *load_file(char *filename);
-int is_dir(char *dirname);
-int is_file(char *filename);
-int find_data_dir(void);
-int find_score_file(void);
-int find_files(void);