标准库头文件 <streambuf>
此头文件是输入/输出库的一部分。
类 | |
抽象原生设备 (类模板) | |
streambuf
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std::basic_streambuf<char> (typedef) |
wstreambuf
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std::basic_streambuf<wchar_t> (typedef) |
概要
namespace std { template<class CharT, class Traits = char_traits<CharT>> class basic_streambuf; using streambuf = basic_streambuf<char>; using wstreambuf = basic_streambuf<wchar_t>; }
类模板 std::basic_streambuf
namespace std { template<class CharT, class Traits = char_traits<CharT>> class basic_streambuf { public: using char_type = CharT; using int_type = typename Traits::int_type; using pos_type = typename Traits::pos_type; using off_type = typename Traits::off_type; using traits_type = Traits; virtual ~basic_streambuf(); // 本地环境 locale pubimbue(const locale& loc); locale getloc() const; // buffer and positioning basic_streambuf* pubsetbuf(char_type* s, streamsize n); pos_type pubseekoff(off_type off, ios_base::seekdir way, ios_base::openmode which = ios_base::in | ios_base::out); pos_type pubseekpos(pos_type sp, ios_base::openmode which = ios_base::in | ios_base::out); int pubsync(); // 获取与放置区 // 获取区 streamsize in_avail(); int_type snextc(); int_type sbumpc(); int_type sgetc(); streamsize sgetn(char_type* s, streamsize n); // 回放 int_type sputbackc(char_type c); int_type sungetc(); // 放置区 int_type sputc(char_type c); streamsize sputn(const char_type* s, streamsize n); protected: basic_streambuf(); basic_streambuf(const basic_streambuf& rhs); basic_streambuf& operator=(const basic_streambuf& rhs); void swap(basic_streambuf& rhs); // 获取区访问 char_type* eback() const; char_type* gptr() const; char_type* egptr() const; void gbump(int n); void setg(char_type* gbeg, char_type* gnext, char_type* gend); // 放置区访问 char_type* pbase() const; char_type* pptr() const; char_type* epptr() const; void pbump(int n); void setp(char_type* pbeg, char_type* pend); // 虚函数 // 本地环境 virtual void imbue(const locale& loc); // buffer management and positioning virtual basic_streambuf* setbuf(char_type* s, streamsize n); virtual pos_type seekoff(off_type off, ios_base::seekdir way, ios_base::openmode which = ios_base::in | ios_base::out); virtual pos_type seekpos(pos_type sp, ios_base::openmode which = ios_base::in | ios_base::out); virtual int sync(); // 获取区 virtual streamsize showmanyc(); virtual streamsize xsgetn(char_type* s, streamsize n); virtual int_type underflow(); virtual int_type uflow(); // 回放 virtual int_type pbackfail(int_type c = Traits::eof()); // 放置区 virtual streamsize xsputn(const char_type* s, streamsize n); virtual int_type overflow(int_type c = Traits::eof()); }; }