197403Sobrien// String based streams -*- C++ -*- 297403Sobrien 3169691Skan// Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006 4132720Skan// Free Software Foundation, Inc. 597403Sobrien// 697403Sobrien// This file is part of the GNU ISO C++ Library. This library is free 797403Sobrien// software; you can redistribute it and/or modify it under the 897403Sobrien// terms of the GNU General Public License as published by the 997403Sobrien// Free Software Foundation; either version 2, or (at your option) 1097403Sobrien// any later version. 1197403Sobrien 1297403Sobrien// This library is distributed in the hope that it will be useful, 1397403Sobrien// but WITHOUT ANY WARRANTY; without even the implied warranty of 1497403Sobrien// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 1597403Sobrien// GNU General Public License for more details. 1697403Sobrien 1797403Sobrien// You should have received a copy of the GNU General Public License along 1897403Sobrien// with this library; see the file COPYING. If not, write to the Free 19169691Skan// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 2097403Sobrien// USA. 2197403Sobrien 2297403Sobrien// As a special exception, you may use this file as part of a free software 2397403Sobrien// library without restriction. Specifically, if other files instantiate 2497403Sobrien// templates or use macros or inline functions from this file, or you compile 2597403Sobrien// this file and link it with other files to produce an executable, this 2697403Sobrien// file does not by itself cause the resulting executable to be covered by 2797403Sobrien// the GNU General Public License. This exception does not however 2897403Sobrien// invalidate any other reasons why the executable file might be covered by 2997403Sobrien// the GNU General Public License. 3097403Sobrien 31169691Skan/** @file sstream 32169691Skan * This is a Standard C++ Library header. 33169691Skan */ 34169691Skan 3597403Sobrien// 3697403Sobrien// ISO C++ 14882: 27.7 String-based streams 3797403Sobrien// 3897403Sobrien 39132720Skan#ifndef _GLIBCXX_SSTREAM 40132720Skan#define _GLIBCXX_SSTREAM 1 4197403Sobrien 4297403Sobrien#pragma GCC system_header 4397403Sobrien 4497403Sobrien#include <istream> 4597403Sobrien#include <ostream> 4697403Sobrien 47169691Skan_GLIBCXX_BEGIN_NAMESPACE(std) 48169691Skan 49117397Skan // [27.7.1] template class basic_stringbuf 50117397Skan /** 51117397Skan * @brief The actual work of input and output (for std::string). 52117397Skan * 53117397Skan * This class associates either or both of its input and output sequences 54117397Skan * with a sequence of characters, which can be initialized from, or made 55117397Skan * available as, a @c std::basic_string. (Paraphrased from [27.7.1]/1.) 56117397Skan * 57117397Skan * For this class, open modes (of type @c ios_base::openmode) have 58117397Skan * @c in set if the input sequence can be read, and @c out set if the 59117397Skan * output sequence can be written. 60117397Skan */ 6197403Sobrien template<typename _CharT, typename _Traits, typename _Alloc> 6297403Sobrien class basic_stringbuf : public basic_streambuf<_CharT, _Traits> 6397403Sobrien { 6497403Sobrien public: 6597403Sobrien // Types: 6697403Sobrien typedef _CharT char_type; 6797403Sobrien typedef _Traits traits_type; 68132720Skan // _GLIBCXX_RESOLVE_LIB_DEFECTS 69132720Skan // 251. basic_stringbuf missing allocator_type 7097403Sobrien typedef _Alloc allocator_type; 7197403Sobrien typedef typename traits_type::int_type int_type; 7297403Sobrien typedef typename traits_type::pos_type pos_type; 7397403Sobrien typedef typename traits_type::off_type off_type; 7497403Sobrien 7597403Sobrien typedef basic_streambuf<char_type, traits_type> __streambuf_type; 7697403Sobrien typedef basic_string<char_type, _Traits, _Alloc> __string_type; 7797403Sobrien typedef typename __string_type::size_type __size_type; 7897403Sobrien 7997403Sobrien protected: 80132720Skan /** 81132720Skan * @if maint 82132720Skan * Place to stash in || out || in | out settings for current stringbuf. 83132720Skan * @endif 84132720Skan */ 85132720Skan ios_base::openmode _M_mode; 86132720Skan 8797403Sobrien // Data Members: 8897403Sobrien __string_type _M_string; 8997403Sobrien 9097403Sobrien public: 9197403Sobrien // Constructors: 92117397Skan /** 93117397Skan * @brief Starts with an empty string buffer. 94117397Skan * @param mode Whether the buffer can read, or write, or both. 95117397Skan * 96117397Skan * The default constructor initializes the parent class using its 97117397Skan * own default ctor. 98117397Skan */ 9997403Sobrien explicit 10097403Sobrien basic_stringbuf(ios_base::openmode __mode = ios_base::in | ios_base::out) 101146897Skan : __streambuf_type(), _M_mode(__mode), _M_string() 102146897Skan { } 10397403Sobrien 104117397Skan /** 105117397Skan * @brief Starts with an existing string buffer. 106117397Skan * @param str A string to copy as a starting buffer. 107117397Skan * @param mode Whether the buffer can read, or write, or both. 108117397Skan * 109117397Skan * This constructor initializes the parent class using its 110117397Skan * own default ctor. 111117397Skan */ 11297403Sobrien explicit 11397403Sobrien basic_stringbuf(const __string_type& __str, 11497403Sobrien ios_base::openmode __mode = ios_base::in | ios_base::out) 115132720Skan : __streambuf_type(), _M_mode(), _M_string(__str.data(), __str.size()) 11697403Sobrien { _M_stringbuf_init(__mode); } 11797403Sobrien 11897403Sobrien // Get and set: 119117397Skan /** 120117397Skan * @brief Copying out the string buffer. 121117397Skan * @return A copy of one of the underlying sequences. 122117397Skan * 123117397Skan * "If the buffer is only created in input mode, the underlying 124117397Skan * character sequence is equal to the input sequence; otherwise, it 125117397Skan * is equal to the output sequence." [27.7.1.2]/1 126117397Skan */ 12797403Sobrien __string_type 12897403Sobrien str() const 12997403Sobrien { 130169691Skan __string_type __ret; 131146897Skan if (this->pptr()) 13297403Sobrien { 133132720Skan // The current egptr() may not be the actual string end. 134132720Skan if (this->pptr() > this->egptr()) 135169691Skan __ret = __string_type(this->pbase(), this->pptr()); 136132720Skan else 137169691Skan __ret = __string_type(this->pbase(), this->egptr()); 13897403Sobrien } 13997403Sobrien else 140169691Skan __ret = _M_string; 141169691Skan return __ret; 14297403Sobrien } 14397403Sobrien 144117397Skan /** 145117397Skan * @brief Setting a new buffer. 146117397Skan * @param s The string to use as a new sequence. 147117397Skan * 148117397Skan * Deallocates any previous stored sequence, then copies @a s to 149117397Skan * use as a new one. 150117397Skan */ 15197403Sobrien void 15297403Sobrien str(const __string_type& __s) 15397403Sobrien { 154107606Sobrien // Cannot use _M_string = __s, since v3 strings are COW. 155107606Sobrien _M_string.assign(__s.data(), __s.size()); 156169691Skan _M_stringbuf_init(_M_mode); 15797403Sobrien } 15897403Sobrien 15997403Sobrien protected: 160146897Skan // Common initialization code goes here. 16197403Sobrien void 16297403Sobrien _M_stringbuf_init(ios_base::openmode __mode) 16397403Sobrien { 164169691Skan _M_mode = __mode; 165132720Skan __size_type __len = 0; 166169691Skan if (_M_mode & (ios_base::ate | ios_base::app)) 167132720Skan __len = _M_string.size(); 168132720Skan _M_sync(const_cast<char_type*>(_M_string.data()), 0, __len); 16997403Sobrien } 17097403Sobrien 171169691Skan virtual streamsize 172169691Skan showmanyc() 173169691Skan { 174169691Skan streamsize __ret = -1; 175169691Skan if (_M_mode & ios_base::in) 176169691Skan { 177169691Skan _M_update_egptr(); 178169691Skan __ret = this->egptr() - this->gptr(); 179169691Skan } 180169691Skan return __ret; 181169691Skan } 182169691Skan 18397403Sobrien virtual int_type 184132720Skan underflow(); 18597403Sobrien 18697403Sobrien virtual int_type 18797403Sobrien pbackfail(int_type __c = traits_type::eof()); 18897403Sobrien 18997403Sobrien virtual int_type 19097403Sobrien overflow(int_type __c = traits_type::eof()); 19197403Sobrien 192117397Skan /** 193117397Skan * @brief Manipulates the buffer. 194117397Skan * @param s Pointer to a buffer area. 195117397Skan * @param n Size of @a s. 196117397Skan * @return @c this 197117397Skan * 198117397Skan * If no buffer has already been created, and both @a s and @a n are 199117397Skan * non-zero, then @c s is used as a buffer; see 200117397Skan * http://gcc.gnu.org/onlinedocs/libstdc++/27_io/howto.html#2 201117397Skan * for more. 202117397Skan */ 20397403Sobrien virtual __streambuf_type* 20497403Sobrien setbuf(char_type* __s, streamsize __n) 20597403Sobrien { 206132720Skan if (__s && __n >= 0) 20797403Sobrien { 208132720Skan // This is implementation-defined behavior, and assumes 209132720Skan // that an external char_type array of length __n exists 210132720Skan // and has been pre-allocated. If this is not the case, 211132720Skan // things will quickly blow up. 212132720Skan 213132720Skan // Step 1: Destroy the current internal array. 214169691Skan _M_string.clear(); 215132720Skan 216132720Skan // Step 2: Use the external array. 217169691Skan _M_sync(__s, __n, 0); 21897403Sobrien } 21997403Sobrien return this; 22097403Sobrien } 22197403Sobrien 22297403Sobrien virtual pos_type 22397403Sobrien seekoff(off_type __off, ios_base::seekdir __way, 22497403Sobrien ios_base::openmode __mode = ios_base::in | ios_base::out); 22597403Sobrien 22697403Sobrien virtual pos_type 22797403Sobrien seekpos(pos_type __sp, 22897403Sobrien ios_base::openmode __mode = ios_base::in | ios_base::out); 22997403Sobrien 23097403Sobrien // Internal function for correctly updating the internal buffer 231169691Skan // for a particular _M_string, due to initialization or re-sizing 232169691Skan // of an existing _M_string. 233132720Skan void 234169691Skan _M_sync(char_type* __base, __size_type __i, __size_type __o); 23597403Sobrien 236132720Skan // Internal function for correctly updating egptr() to the actual 237132720Skan // string end. 238132720Skan void 239132720Skan _M_update_egptr() 240132720Skan { 241169691Skan const bool __testin = _M_mode & ios_base::in; 242146897Skan if (this->pptr() && this->pptr() > this->egptr()) 243241957Sdim { 244241957Sdim if (__testin) 245241957Sdim this->setg(this->eback(), this->gptr(), this->pptr()); 246241957Sdim else 247241957Sdim this->setg(this->pptr(), this->pptr(), this->pptr()); 248241957Sdim } 249132720Skan } 25097403Sobrien }; 25197403Sobrien 25297403Sobrien 253117397Skan // [27.7.2] Template class basic_istringstream 254117397Skan /** 255117397Skan * @brief Controlling input for std::string. 256117397Skan * 257117397Skan * This class supports reading from objects of type std::basic_string, 258117397Skan * using the inherited functions from std::basic_istream. To control 259117397Skan * the associated sequence, an instance of std::basic_stringbuf is used, 260117397Skan * which this page refers to as @c sb. 261117397Skan */ 26297403Sobrien template<typename _CharT, typename _Traits, typename _Alloc> 26397403Sobrien class basic_istringstream : public basic_istream<_CharT, _Traits> 26497403Sobrien { 26597403Sobrien public: 26697403Sobrien // Types: 26797403Sobrien typedef _CharT char_type; 26897403Sobrien typedef _Traits traits_type; 269132720Skan // _GLIBCXX_RESOLVE_LIB_DEFECTS 270132720Skan // 251. basic_stringbuf missing allocator_type 27197403Sobrien typedef _Alloc allocator_type; 27297403Sobrien typedef typename traits_type::int_type int_type; 27397403Sobrien typedef typename traits_type::pos_type pos_type; 27497403Sobrien typedef typename traits_type::off_type off_type; 27597403Sobrien 27697403Sobrien // Non-standard types: 27797403Sobrien typedef basic_string<_CharT, _Traits, _Alloc> __string_type; 27897403Sobrien typedef basic_stringbuf<_CharT, _Traits, _Alloc> __stringbuf_type; 27997403Sobrien typedef basic_istream<char_type, traits_type> __istream_type; 28097403Sobrien 28197403Sobrien private: 28297403Sobrien __stringbuf_type _M_stringbuf; 28397403Sobrien 28497403Sobrien public: 28597403Sobrien // Constructors: 286117397Skan /** 287117397Skan * @brief Default constructor starts with an empty string buffer. 288117397Skan * @param mode Whether the buffer can read, or write, or both. 289117397Skan * 290117397Skan * @c ios_base::in is automatically included in @a mode. 291117397Skan * 292117397Skan * Initializes @c sb using @c mode|in, and passes @c &sb to the base 293117397Skan * class initializer. Does not allocate any buffer. 294117397Skan * 295117397Skan * @if maint 296117397Skan * That's a lie. We initialize the base class with NULL, because the 297117397Skan * string class does its own memory management. 298117397Skan * @endif 299117397Skan */ 30097403Sobrien explicit 30197403Sobrien basic_istringstream(ios_base::openmode __mode = ios_base::in) 302132720Skan : __istream_type(), _M_stringbuf(__mode | ios_base::in) 30397403Sobrien { this->init(&_M_stringbuf); } 30497403Sobrien 305117397Skan /** 306117397Skan * @brief Starts with an existing string buffer. 307117397Skan * @param str A string to copy as a starting buffer. 308117397Skan * @param mode Whether the buffer can read, or write, or both. 309117397Skan * 310117397Skan * @c ios_base::in is automatically included in @a mode. 311117397Skan * 312117397Skan * Initializes @c sb using @a str and @c mode|in, and passes @c &sb 313117397Skan * to the base class initializer. 314117397Skan * 315117397Skan * @if maint 316117397Skan * That's a lie. We initialize the base class with NULL, because the 317117397Skan * string class does its own memory management. 318117397Skan * @endif 319117397Skan */ 32097403Sobrien explicit 32197403Sobrien basic_istringstream(const __string_type& __str, 32297403Sobrien ios_base::openmode __mode = ios_base::in) 323132720Skan : __istream_type(), _M_stringbuf(__str, __mode | ios_base::in) 32497403Sobrien { this->init(&_M_stringbuf); } 32597403Sobrien 326117397Skan /** 327117397Skan * @brief The destructor does nothing. 328117397Skan * 329117397Skan * The buffer is deallocated by the stringbuf object, not the 330117397Skan * formatting stream. 331117397Skan */ 33297403Sobrien ~basic_istringstream() 33397403Sobrien { } 33497403Sobrien 33597403Sobrien // Members: 336117397Skan /** 337117397Skan * @brief Accessing the underlying buffer. 338117397Skan * @return The current basic_stringbuf buffer. 339117397Skan * 340117397Skan * This hides both signatures of std::basic_ios::rdbuf(). 341117397Skan */ 34297403Sobrien __stringbuf_type* 34397403Sobrien rdbuf() const 34497403Sobrien { return const_cast<__stringbuf_type*>(&_M_stringbuf); } 34597403Sobrien 346117397Skan /** 347117397Skan * @brief Copying out the string buffer. 348117397Skan * @return @c rdbuf()->str() 349117397Skan */ 35097403Sobrien __string_type 35197403Sobrien str() const 35297403Sobrien { return _M_stringbuf.str(); } 35397403Sobrien 354117397Skan /** 355117397Skan * @brief Setting a new buffer. 356117397Skan * @param s The string to use as a new sequence. 357117397Skan * 358117397Skan * Calls @c rdbuf()->str(s). 359117397Skan */ 36097403Sobrien void 36197403Sobrien str(const __string_type& __s) 36297403Sobrien { _M_stringbuf.str(__s); } 36397403Sobrien }; 36497403Sobrien 36597403Sobrien 366117397Skan // [27.7.3] Template class basic_ostringstream 367117397Skan /** 368117397Skan * @brief Controlling output for std::string. 369117397Skan * 370117397Skan * This class supports writing to objects of type std::basic_string, 371117397Skan * using the inherited functions from std::basic_ostream. To control 372117397Skan * the associated sequence, an instance of std::basic_stringbuf is used, 373117397Skan * which this page refers to as @c sb. 374117397Skan */ 37597403Sobrien template <typename _CharT, typename _Traits, typename _Alloc> 37697403Sobrien class basic_ostringstream : public basic_ostream<_CharT, _Traits> 37797403Sobrien { 37897403Sobrien public: 37997403Sobrien // Types: 38097403Sobrien typedef _CharT char_type; 38197403Sobrien typedef _Traits traits_type; 382132720Skan // _GLIBCXX_RESOLVE_LIB_DEFECTS 383132720Skan // 251. basic_stringbuf missing allocator_type 38497403Sobrien typedef _Alloc allocator_type; 38597403Sobrien typedef typename traits_type::int_type int_type; 38697403Sobrien typedef typename traits_type::pos_type pos_type; 38797403Sobrien typedef typename traits_type::off_type off_type; 38897403Sobrien 38997403Sobrien // Non-standard types: 39097403Sobrien typedef basic_string<_CharT, _Traits, _Alloc> __string_type; 39197403Sobrien typedef basic_stringbuf<_CharT, _Traits, _Alloc> __stringbuf_type; 39297403Sobrien typedef basic_ostream<char_type, traits_type> __ostream_type; 39397403Sobrien 39497403Sobrien private: 39597403Sobrien __stringbuf_type _M_stringbuf; 39697403Sobrien 39797403Sobrien public: 398117397Skan // Constructors/destructor: 399117397Skan /** 400117397Skan * @brief Default constructor starts with an empty string buffer. 401117397Skan * @param mode Whether the buffer can read, or write, or both. 402117397Skan * 403117397Skan * @c ios_base::out is automatically included in @a mode. 404117397Skan * 405117397Skan * Initializes @c sb using @c mode|out, and passes @c &sb to the base 406117397Skan * class initializer. Does not allocate any buffer. 407117397Skan * 408117397Skan * @if maint 409117397Skan * That's a lie. We initialize the base class with NULL, because the 410117397Skan * string class does its own memory management. 411117397Skan * @endif 412117397Skan */ 41397403Sobrien explicit 41497403Sobrien basic_ostringstream(ios_base::openmode __mode = ios_base::out) 415132720Skan : __ostream_type(), _M_stringbuf(__mode | ios_base::out) 41697403Sobrien { this->init(&_M_stringbuf); } 41797403Sobrien 418117397Skan /** 419117397Skan * @brief Starts with an existing string buffer. 420117397Skan * @param str A string to copy as a starting buffer. 421117397Skan * @param mode Whether the buffer can read, or write, or both. 422117397Skan * 423117397Skan * @c ios_base::out is automatically included in @a mode. 424117397Skan * 425117397Skan * Initializes @c sb using @a str and @c mode|out, and passes @c &sb 426117397Skan * to the base class initializer. 427117397Skan * 428117397Skan * @if maint 429117397Skan * That's a lie. We initialize the base class with NULL, because the 430117397Skan * string class does its own memory management. 431117397Skan * @endif 432117397Skan */ 43397403Sobrien explicit 43497403Sobrien basic_ostringstream(const __string_type& __str, 43597403Sobrien ios_base::openmode __mode = ios_base::out) 436132720Skan : __ostream_type(), _M_stringbuf(__str, __mode | ios_base::out) 43797403Sobrien { this->init(&_M_stringbuf); } 43897403Sobrien 439117397Skan /** 440117397Skan * @brief The destructor does nothing. 441117397Skan * 442117397Skan * The buffer is deallocated by the stringbuf object, not the 443117397Skan * formatting stream. 444117397Skan */ 44597403Sobrien ~basic_ostringstream() 44697403Sobrien { } 44797403Sobrien 44897403Sobrien // Members: 449117397Skan /** 450117397Skan * @brief Accessing the underlying buffer. 451117397Skan * @return The current basic_stringbuf buffer. 452117397Skan * 453117397Skan * This hides both signatures of std::basic_ios::rdbuf(). 454117397Skan */ 45597403Sobrien __stringbuf_type* 45697403Sobrien rdbuf() const 45797403Sobrien { return const_cast<__stringbuf_type*>(&_M_stringbuf); } 45897403Sobrien 459117397Skan /** 460117397Skan * @brief Copying out the string buffer. 461117397Skan * @return @c rdbuf()->str() 462117397Skan */ 46397403Sobrien __string_type 46497403Sobrien str() const 46597403Sobrien { return _M_stringbuf.str(); } 46697403Sobrien 467117397Skan /** 468117397Skan * @brief Setting a new buffer. 469117397Skan * @param s The string to use as a new sequence. 470117397Skan * 471117397Skan * Calls @c rdbuf()->str(s). 472117397Skan */ 47397403Sobrien void 47497403Sobrien str(const __string_type& __s) 47597403Sobrien { _M_stringbuf.str(__s); } 47697403Sobrien }; 47797403Sobrien 47897403Sobrien 479117397Skan // [27.7.4] Template class basic_stringstream 480117397Skan /** 481117397Skan * @brief Controlling input and output for std::string. 482117397Skan * 483117397Skan * This class supports reading from and writing to objects of type 484117397Skan * std::basic_string, using the inherited functions from 485117397Skan * std::basic_iostream. To control the associated sequence, an instance 486117397Skan * of std::basic_stringbuf is used, which this page refers to as @c sb. 487117397Skan */ 48897403Sobrien template <typename _CharT, typename _Traits, typename _Alloc> 48997403Sobrien class basic_stringstream : public basic_iostream<_CharT, _Traits> 49097403Sobrien { 49197403Sobrien public: 49297403Sobrien // Types: 49397403Sobrien typedef _CharT char_type; 49497403Sobrien typedef _Traits traits_type; 495132720Skan // _GLIBCXX_RESOLVE_LIB_DEFECTS 496132720Skan // 251. basic_stringbuf missing allocator_type 49797403Sobrien typedef _Alloc allocator_type; 49897403Sobrien typedef typename traits_type::int_type int_type; 49997403Sobrien typedef typename traits_type::pos_type pos_type; 50097403Sobrien typedef typename traits_type::off_type off_type; 50197403Sobrien 50297403Sobrien // Non-standard Types: 50397403Sobrien typedef basic_string<_CharT, _Traits, _Alloc> __string_type; 50497403Sobrien typedef basic_stringbuf<_CharT, _Traits, _Alloc> __stringbuf_type; 50597403Sobrien typedef basic_iostream<char_type, traits_type> __iostream_type; 50697403Sobrien 50797403Sobrien private: 50897403Sobrien __stringbuf_type _M_stringbuf; 50997403Sobrien 51097403Sobrien public: 51197403Sobrien // Constructors/destructors 512117397Skan /** 513117397Skan * @brief Default constructor starts with an empty string buffer. 514117397Skan * @param mode Whether the buffer can read, or write, or both. 515117397Skan * 516117397Skan * Initializes @c sb using @c mode, and passes @c &sb to the base 517117397Skan * class initializer. Does not allocate any buffer. 518117397Skan * 519117397Skan * @if maint 520117397Skan * That's a lie. We initialize the base class with NULL, because the 521117397Skan * string class does its own memory management. 522117397Skan * @endif 523117397Skan */ 52497403Sobrien explicit 52597403Sobrien basic_stringstream(ios_base::openmode __m = ios_base::out | ios_base::in) 526132720Skan : __iostream_type(), _M_stringbuf(__m) 52797403Sobrien { this->init(&_M_stringbuf); } 52897403Sobrien 529117397Skan /** 530117397Skan * @brief Starts with an existing string buffer. 531117397Skan * @param str A string to copy as a starting buffer. 532117397Skan * @param mode Whether the buffer can read, or write, or both. 533117397Skan * 534117397Skan * Initializes @c sb using @a str and @c mode, and passes @c &sb 535117397Skan * to the base class initializer. 536117397Skan * 537117397Skan * @if maint 538117397Skan * That's a lie. We initialize the base class with NULL, because the 539117397Skan * string class does its own memory management. 540117397Skan * @endif 541117397Skan */ 54297403Sobrien explicit 54397403Sobrien basic_stringstream(const __string_type& __str, 54497403Sobrien ios_base::openmode __m = ios_base::out | ios_base::in) 545132720Skan : __iostream_type(), _M_stringbuf(__str, __m) 54697403Sobrien { this->init(&_M_stringbuf); } 54797403Sobrien 548117397Skan /** 549117397Skan * @brief The destructor does nothing. 550117397Skan * 551117397Skan * The buffer is deallocated by the stringbuf object, not the 552117397Skan * formatting stream. 553117397Skan */ 55497403Sobrien ~basic_stringstream() 55597403Sobrien { } 55697403Sobrien 55797403Sobrien // Members: 558117397Skan /** 559117397Skan * @brief Accessing the underlying buffer. 560117397Skan * @return The current basic_stringbuf buffer. 561117397Skan * 562117397Skan * This hides both signatures of std::basic_ios::rdbuf(). 563117397Skan */ 56497403Sobrien __stringbuf_type* 56597403Sobrien rdbuf() const 56697403Sobrien { return const_cast<__stringbuf_type*>(&_M_stringbuf); } 56797403Sobrien 568117397Skan /** 569117397Skan * @brief Copying out the string buffer. 570117397Skan * @return @c rdbuf()->str() 571117397Skan */ 57297403Sobrien __string_type 57397403Sobrien str() const 57497403Sobrien { return _M_stringbuf.str(); } 57597403Sobrien 576117397Skan /** 577117397Skan * @brief Setting a new buffer. 578117397Skan * @param s The string to use as a new sequence. 579117397Skan * 580117397Skan * Calls @c rdbuf()->str(s). 581117397Skan */ 58297403Sobrien void 58397403Sobrien str(const __string_type& __s) 58497403Sobrien { _M_stringbuf.str(__s); } 58597403Sobrien }; 58697403Sobrien 587169691Skan_GLIBCXX_END_NAMESPACE 588169691Skan 589132720Skan#ifndef _GLIBCXX_EXPORT_TEMPLATE 59097403Sobrien# include <bits/sstream.tcc> 59197403Sobrien#endif 59297403Sobrien 593132720Skan#endif /* _GLIBCXX_SSTREAM */ 594