标准库头文件 <streambuf>
来自cppreference.com
此头文件是输入/输出库的一部分。
类 | |
抽象原生设备 (类模板) | |
typedef | |
streambuf
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basic_streambuf<char> |
wstreambuf
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basic_streambuf<wchar_t> |
概要
namespace std { template <class charT, class traits = char_traits<charT> > class basic_streambuf; typedef basic_streambuf<char> streambuf; typedef basic_streambuf<wchar_t> wstreambuf; }
类 std::basic_streambuf
template <class charT, class traits = char_traits<charT> > class basic_streambuf { public: // 类型: typedef charT char_type; typedef typename traits::int_type int_type; typedef typename traits::pos_type pos_type; typedef typename traits::off_type off_type; typedef traits traits_type; virtual ~basic_streambuf(); // 本地环境: locale pubimbue(const locale& loc); locale getloc() const; // 缓冲区与寻位: basic_streambuf<char_type,traits>* 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: 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: 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); // 缓冲区管理及寻位: virtual basic_streambuf<char_type,traits>* 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()); };