int
cos_read_utf8 (unsigned char *str, size_t len, size_t start, size_t* endp);
int
cos_read_char (unsigned char *str, size_t len, size_t start, size_t* endp);
int
cos_read_utf8 (unsigned char *str, size_t len, size_t start, size_t* endp);
int
cos_read_char (unsigned char *str, size_t len, size_t start, size_t* endp);