标准库头文件 <strstream>
此头文件是输入/输出库的一部分。
类 | |
(C++98 中弃用) |
实现原生字符数组设备 (类) |
(C++98 中弃用) |
实现字符数组输入操作 (类) |
(C++98 中弃用) |
实现字符数组输出操作 (类) |
(C++98 中弃用) |
实现字符数组输入/输出操作 (类) |
概要
namespace std { class strstreambuf; class istrstream; class ostrstream; class strstream; }
类 std::strstreambuf
namespace std { class strstreambuf : public basic_streambuf<char> { public: strstreambuf() : strstreambuf(0) {} explicit strstreambuf(streamsize alsize_arg); strstreambuf(void* (*palloc_arg)(size_t), void (*pfree_arg)(void*)); strstreambuf(char* gnext_arg, streamsize n, char* pbeg_arg = nullptr); strstreambuf(const char* gnext_arg, streamsize n); strstreambuf(signed char* gnext_arg, streamsize n, signed char* pbeg_arg = nullptr); strstreambuf(const signed char* gnext_arg, streamsize n); strstreambuf(unsigned char* gnext_arg, streamsize n, unsigned char* pbeg_arg = nullptr); strstreambuf(const unsigned char* gnext_arg, streamsize n); virtual ~strstreambuf(); void freeze(bool freezefl = true); char* str(); int pcount(); protected: int_type overflow (int_type c = EOF) override; int_type pbackfail(int_type c = EOF) override; int_type underflow() override; pos_type seekoff(off_type off, ios_base::seekdir way, ios_base::openmode which = ios_base::in | ios_base::out) override; pos_type seekpos(pos_type sp, ios_base::openmode which = ios_base::in | ios_base::out) override; streambuf* setbuf(char* s, streamsize n) override; private: using strstate = /*位掩码类型*/; // 仅用于阐释 static const strstate allocated; // 仅用于阐释 static const strstate constant; // 仅用于阐释 static const strstate dynamic; // 仅用于阐释 static const strstate frozen; // 仅用于阐释 strstate strmode; // 仅用于阐释 streamsize alsize; // 仅用于阐释 void* (*palloc)(size_t); // 仅用于阐释 void (*pfree)(void*); // 仅用于阐释 }; }
类 std::istrstream
namespace std { class istrstream : public basic_istream<char> { public: explicit istrstream(const char* s); explicit istrstream(char* s); istrstream(const char* s, streamsize n); istrstream(char* s, streamsize n); virtual ~istrstream(); strstreambuf* rdbuf() const; char* str(); private: strstreambuf sb; // 仅用于阐释 }; }
类 std::ostrstream
namespace std { class ostrstream : public basic_ostream<char> { public: ostrstream(); ostrstream(char* s, int n, ios_base::openmode mode = ios_base::out); virtual ~ostrstream(); strstreambuf* rdbuf() const; void freeze(bool freezefl = true); char* str(); int pcount() const; private: strstreambuf sb; // 仅用于阐释 }; }
类 std::strstream
namespace std { class strstream : public basic_iostream<char> { public: // 类型 using char_type = char; using int_type = char_traits<char>::int_type; using pos_type = char_traits<char>::pos_type; using off_type = char_traits<char>::off_type; // 构造函数/析构函数 strstream(); strstream(char* s, int n, ios_base::openmode mode = ios_base::in | ios_base::out); virtual ~strstream(); // 成员 strstreambuf* rdbuf() const; void freeze(bool freezefl = true); int pcount() const; char* str(); private: strstreambuf sb; // 仅用于阐释 }; }