basic_ios

  • 项目

basic_ios

bad·basic_ios·char_type·clear·copyfmt·eof·exceptions·fail·good ·imbue·init·int_type·narrow·off_type·operator!·operator void *·pos_type ·rdbuf·rdstate·setstate·tie·widen 

template <class E, class T = char_traits<E> >
    class basic_ios : public ios_base {
public:
    typedef E char_type;
    typedef T::int_type int_type;
    typedef T::pos_type pos_type;
    typedef T::off_type off_type;
    explicit basic_ios(basic_streambuf<E, T>* sb);
    virtual ~basic_ios();
    operator void *() const;
    bool operator!() const;
    iostate rdstate() const;
    void clear(iostate state = goodbit);
    void setstate(iostate state);
    bool good() const;
    bool eof() const;
    bool fail() const;
    bool bad() const;
    iostate exceptions() const;
    iostate exceptions(iostate except);
    basic_ios& copyfmt(const basic_ios& rhs);
    E fill() const;
    E fill(E ch);
    basic_ostream<E, T> *tie() const;
    basic_ostream<E, T> *tie(basic_ostream<E, T> *str);
    basic_streambuf<E, T> *rdbuf() const;
    basic_streambuf<E, T> *rdbuf(basic_streambuf<E, T> *sb);
    basic_ios& copyfmt(const basic_ios& rhs);
    locale imbue(const locale& loc);
    E widen(char ch);
    char narrow(E ch, char dflt);
protected:
    basic_ios();
    void init(basic_streambuf<E, T>* sb);
    };

The template class describes the storage and member functions common to both input streams (of template class basic_istream) and output streams (of template class basic_ostream) that depend on the template parameters. (The class ios_base describes what is common and not dependent on template parameters. An object of class basic_ios<E, T> helps control a stream with elements of type E, whose character traits are determined by the class T.

An object of class basic_ios<E, T> stores: