вокруг этой функции взять нужное. а filename на url :)
static ExcludeList *excludes = NULL;
static bool isExcluded(fs::FS &_fs, const char *filename)
static void loadExcludeList(fs::FS &_fs, const char *filename)
static bool addExclude(const char *item)
typedef struct ExcludeListS {
char *item;
ExcludeListS *next;
} ExcludeList;