1 // filebuf with encoding state type -*- C++ -*- 2 3 // Copyright (C) 2002, 2003, 2004, 2007, 2009 Free Software Foundation, Inc. 4 // 5 // This file is part of the GNU ISO C++ Library. This library is free 6 // software; you can redistribute it and/or modify it under the 7 // terms of the GNU General Public License as published by the 8 // Free Software Foundation; either version 3, or (at your option) 9 // any later version. 10 11 // This library is distributed in the hope that it will be useful, 12 // but WITHOUT ANY WARRANTY; without even the implied warranty of 13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 // GNU General Public License for more details. 15 16 // Under Section 7 of GPL version 3, you are granted additional 17 // permissions described in the GCC Runtime Library Exception, version 18 // 3.1, as published by the Free Software Foundation. 19 20 // You should have received a copy of the GNU General Public License and 21 // a copy of the GCC Runtime Library Exception along with this program; 22 // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see 23 // <http://www.gnu.org/licenses/>. 24 25 /** @file ext/enc_filebuf.h 26 * This file is a GNU extension to the Standard C++ Library. 27 */ 28 29 #ifndef _EXT_ENC_FILEBUF_H 30 #define _EXT_ENC_FILEBUF_H 1 31 32 #include <fstream> 33 #include <locale> 34 #include <ext/codecvt_specializations.h> 35 36 _GLIBCXX_BEGIN_NAMESPACE(__gnu_cxx) 37 38 /// class enc_filebuf. 39 template<typename _CharT> 40 class enc_filebuf 41 : public std::basic_filebuf<_CharT, encoding_char_traits<_CharT> > 42 { 43 public: 44 typedef encoding_char_traits<_CharT> traits_type; 45 typedef typename traits_type::state_type state_type; 46 typedef typename traits_type::pos_type pos_type; 47 48 enc_filebuf(state_type& __state) 49 : std::basic_filebuf<_CharT, encoding_char_traits<_CharT> >() 50 { this->_M_state_beg = __state; } 51 52 private: 53 // concept requirements: 54 // Set state type to something useful. 55 // Something more than copyconstructible is needed here, so 56 // require default and copy constructible + assignment operator. 57 __glibcxx_class_requires(state_type, _SGIAssignableConcept) 58 }; 59 60 _GLIBCXX_END_NAMESPACE 61 62 #endif 63
