int ul_dbuff_strcpy(ul_dbuff_t *buf, const char *str);
int ul_dbuff_strcat(ul_dbuff_t *buf, const char *str);
int ul_dbuff_append_byte(ul_dbuff_t *buf, unsigned char b);
+int ul_dbuff_export(ul_dbuff_t *srcdb, void *dest, int maxlen);
void ul_dbuff_cut_pos(ul_dbuff_t *fromdb, ul_dbuff_t *todb, int n);
void ul_dbuff_cut_delimited(ul_dbuff_t *fromdb, ul_dbuff_t *todb, char delimiter, char quote);