/home/ntakagi/work/STLport-5.1.5/stlport/stl/_sstream.h Go to the documentation of this file. /* * Copyright (c) 1999 * Silicon Graphics Computer Systems, Inc. * * Copyright (c) 1999 * Boris Fomitchev * * This material is provided "as is", with absolutely no warranty expressed * or implied. Any use is at your own risk. * * Permission to use or copy this software for any purpose is hereby granted * without fee, provided the above notices are retained on all copies. * Permission to modify the code and to distribute modified code is granted, * provided the above notices are retained, and a notice that the code was * modified is included with the above copyright notice. * */ // This header defines classes basic_stringbuf, basic_istringstream, // basic_ostringstream, and basic_stringstream. These classes // represent streamsbufs and streams whose sources or destinations are // C++ strings. #ifndef _STLP_INTERNAL_SSTREAM #define _STLP_INTERNAL_SSTREAM #ifndef _STLP_INTERNAL_STREAMBUF # include <stl/_streambuf.h> #endif #ifndef _STLP_INTERNAL_ISTREAM # include <stl/_istream.h> // Includes <ostream>, <ios>, <iosfwd> #endif #ifndef _STLP_INTERNAL_STRING_H # include <stl/_string.h> #endif _STLP_BEGIN_NAMESPACE //---------------------------------------------------------------------- // This version of basic_stringbuf relies on the internal details of // basic_string. It relies on the fact that, in this implementation, // basic_string's iterators are pointers. It also assumes (as allowed // by the standard) that _CharT is a POD type. // We have a very small buffer for the put area, just so that we don't // have to use append() for every sputc. Conceptually, the buffer // immediately follows the end of the underlying string. We use this // buffer when appending to write-only streambufs, but we don't use it // for read-write streambufs. template <class _CharT, class _Traits, class _Alloc> class basic_stringbuf : public basic_streambuf<_CharT, _Traits> { public: // Typedefs. 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; typedef basic_streambuf<_CharT, _Traits> _Base; typedef basic_stringbuf<_CharT, _Traits, _Alloc> _Self; typedef basic_string<_CharT, _Traits, _Alloc> _String; public: // Constructors, destructor. explicit basic_stringbuf(ios_base::openmode __mode = ios_base::in | ios_base::out); explicit basic_stringbuf(const _String& __s, ios_base::openmode __mode = ios_base::in | ios_base::out); virtual ~basic_stringbuf(); public: // Get or set the string. _String str() const { _M_append_buffer(); return _M_str; } void str(const _String& __s); protected: // Overridden virtual member functions. virtual int_type underflow(); virtual int_type uflow(); virtual int_type pbackfail(int_type __c); virtual int_type overflow(int_type __c); int_type pbackfail() {return pbackfail(_Traits::eof());} int_type overflow() {return overflow(_Traits::eof());} virtual streamsize xsputn(const char_type* __s, streamsize __n); virtual streamsize _M_xsputnc(char_type __c, streamsize __n); virtual _Base* setbuf(_CharT* __buf, streamsize __n); virtual pos_type seekoff(off_type __off, ios_base::seekdir __dir, ios_base::openmode __mode = ios_base::in | ios_base::out); virtual pos_type seekpos(pos_type __pos, ios_base::openmode __mode = ios_base::in | ios_base::out); private: // Helper functions. // Append the internal buffer to the string if necessary. void _M_append_buffer() const; void _M_set_ptrs(); private: ios_base::openmode _M_mode; mutable basic_string<_CharT, _Traits, _Alloc> _M_str; enum _JustName { _S_BufSiz = 8 }; _CharT _M_Buf[ 8 /* _S_BufSiz */]; }; #if defined (_STLP_USE_TEMPLATE_EXPORT) _STLP_EXPORT_TEMPLATE_CLASS basic_stringbuf<char, char_traits<char>, allocator<char> >; # if !defined (_STLP_NO_WCHAR_T) _STLP_EXPORT_TEMPLATE_CLASS basic_stringbuf<wchar_t, char_traits<wchar_t>, allocator<wchar_t> >; # endif #endif /* _STLP_USE_TEMPLATE_EXPORT */ //---------------------------------------------------------------------- // Class basic_istringstream, an input stream that uses a stringbuf. template <class _CharT, class _Traits, class _Alloc> class basic_istringstream : public basic_istream<_CharT, _Traits> { public: // Typedefs typedef typename _Traits::char_type 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; typedef basic_ios<_CharT, _Traits> _Basic_ios; typedef basic_istream<_CharT, _Traits> _Base; typedef basic_string<_CharT, _Traits, _Alloc> _String; typedef basic_stringbuf<_CharT, _Traits, _Alloc> _Buf; public: // Constructors, destructor. basic_istringstream(ios_base::openmode __mode = ios_base::in); basic_istringstream(const _String& __str, ios_base::openmode __mode = ios_base::in); ~basic_istringstream(); public: // Member functions basic_stringbuf<_CharT, _Traits, _Alloc>* rdbuf() const { return __CONST_CAST(_Buf*,&_M_buf); } _String str() const { return _M_buf.str(); } void str(const _String& __s) { _M_buf.str(__s); } private: basic_stringbuf<_CharT, _Traits, _Alloc> _M_buf; #if defined (_STLP_MSVC) && (_STLP_MSVC >= 1300 && _STLP_MSVC <= 1310) typedef basic_istringstream<_CharT, _Traits> _Self; //explicitely defined as private to avoid warnings: basic_istringstream(_Self const&); _Self& operator = (_Self const&); #endif }; //---------------------------------------------------------------------- // Class basic_ostringstream, an output stream that uses a stringbuf. template <class _CharT, class _Traits, class _Alloc> class basic_ostringstream : public basic_ostream<_CharT, _Traits> { public: // Typedefs typedef typename _Traits::char_type 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; typedef basic_ios<_CharT, _Traits> _Basic_ios; typedef basic_ostream<_CharT, _Traits> _Base; typedef basic_string<_CharT, _Traits, _Alloc> _String; typedef basic_stringbuf<_CharT, _Traits, _Alloc> _Buf; public: // Constructors, destructor. basic_ostringstream(ios_base::openmode __mode = ios_base::out); basic_ostringstream(const _String& __str, ios_base::openmode __mode = ios_base::out); ~basic_ostringstream(); public: // Member functions. basic_stringbuf<_CharT, _Traits, _Alloc>* rdbuf() const { return __CONST_CAST(_Buf*,&_M_buf); } _String str() const { return _M_buf.str(); } void str(const _String& __s) { _M_buf.str(__s); } // dwa 02/07/00 - BUG STOMPER DAVE private: basic_stringbuf<_CharT, _Traits, _Alloc> _M_buf; #if defined (_STLP_MSVC) && (_STLP_MSVC >= 1300 && _STLP_MSVC <= 1310) typedef basic_ostringstream<_CharT, _Traits> _Self; //explicitely defined as private to avoid warnings: basic_ostringstream(_Self const&); _Self& operator = (_Self const&); #endif }; //---------------------------------------------------------------------- // Class basic_stringstream, a bidirectional stream that uses a stringbuf. template <class _CharT, class _Traits, class _Alloc> class basic_stringstream : public basic_iostream<_CharT, _Traits> { public: // Typedefs typedef typename _Traits::char_type 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; typedef basic_ios<_CharT, _Traits> _Basic_ios; typedef basic_iostream<_CharT, _Traits> _Base; typedef basic_string<_CharT, _Traits, _Alloc> _String; typedef basic_stringbuf<_CharT, _Traits, _Alloc> _Buf; typedef ios_base::openmode openmode; public: // Constructors, destructor. basic_stringstream(openmode __mod = ios_base::in | ios_base::out); basic_stringstream(const _String& __str, openmode __mod = ios_base::in | ios_base::out); ~basic_stringstream(); public: // Member functions. basic_stringbuf<_CharT, _Traits, _Alloc>* rdbuf() const { return __CONST_CAST(_Buf*,&_M_buf); } _String str() const { return _M_buf.str(); } void str(const _String& __s) { _M_buf.str(__s); } private: basic_stringbuf<_CharT, _Traits, _Alloc> _M_buf; #if defined (_STLP_MSVC) && (_STLP_MSVC >= 1300 && _STLP_MSVC <= 1310) typedef basic_stringstream<_CharT, _Traits> _Self; //explicitely defined as private to avoid warnings: basic_stringstream(_Self const&); _Self& operator = (_Self const&); #endif }; #if defined (_STLP_USE_TEMPLATE_EXPORT) _STLP_EXPORT_TEMPLATE_CLASS basic_istringstream<char, char_traits<char>, allocator<char> >; _STLP_EXPORT_TEMPLATE_CLASS basic_ostringstream<char, char_traits<char>, allocator<char> >; _STLP_EXPORT_TEMPLATE_CLASS basic_stringstream<char, char_traits<char>, allocator<char> >; # if !defined (_STLP_NO_WCHAR_T) _STLP_EXPORT_TEMPLATE_CLASS basic_istringstream<wchar_t, char_traits<wchar_t>, allocator<wchar_t> >; _STLP_EXPORT_TEMPLATE_CLASS basic_ostringstream<wchar_t, char_traits<wchar_t>, allocator<wchar_t> >; _STLP_EXPORT_TEMPLATE_CLASS basic_stringstream<wchar_t, char_traits<wchar_t>, allocator<wchar_t> >; # endif #endif /* _STLP_USE_TEMPLATE_EXPORT */ _STLP_END_NAMESPACE #if defined (_STLP_EXPOSE_STREAM_IMPLEMENTATION) && !defined (_STLP_LINK_TIME_INSTANTIATION) # include <stl/_sstream.c> #endif #endif /* _STLP_INTERNAL_SSTREAM */ // Local Variables: // mode:C++ // End:

• ソフトウェア開発
• ホームページ制作
• Doxygen Source Document
• Tcl Source Document