/* tools */
-int Ctdl_IsUtf8SequenceStart(char Char);
-int Ctdl_GetUtf8SequenceLength(char Char);
-int Ctdl_Utf8StrLen(char *str);
-char *Ctdl_Utf8StrCut(char *str, int maxlen);
-
int safestrncpy(char *dest, const char *src, size_t n);
int num_tokens (const char *source, char tok);