#include typedef struct { gchar* environmental; gchar* default_value; } XDG_Var; gchar* get_xdg_var (XDG_Var xdg); gchar* find_xdg_file (int xdg_type, const char* filename); gboolean file_exists(const char* filename); char * str_replace (const char* search, const char* replace, const char* string);