void convert_line (std::string t, RawSubtitle& p);
void maybe_content (RawSubtitle& p);
void read (boost::function<boost::optional<std::string> ()> get_line);
void convert_line (std::string t, RawSubtitle& p);
void maybe_content (RawSubtitle& p);
void read (boost::function<boost::optional<std::string> ()> get_line);