1 // Wrapper of C-language FILE struct -*- C++ -*- 2 3 // Copyright (C) 2000-2018 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 // 26 // ISO C++ 14882: 27.8 File-based streams 27 // 28 29 /** @file bits/basic_file.h 30 * This is an internal header file, included by other library headers. 31 * Do not attempt to use it directly. @headername{ios} 32 */ 33 34 #ifndef _GLIBCXX_BASIC_FILE_STDIO_H 35 #define _GLIBCXX_BASIC_FILE_STDIO_H 1 36 37 #pragma GCC system_header 38 39 #include <bits/c++config.h> 40 #include <bits/c++io.h> // for __c_lock and __c_file 41 #include <bits/move.h> // for swap 42 #include <ios> 43 44 namespace std _GLIBCXX_VISIBILITY(default) 45 { 46 _GLIBCXX_BEGIN_NAMESPACE_VERSION 47 48 // Generic declaration. 49 template<typename _CharT> 50 class __basic_file; 51 52 // Specialization. 53 template<> 54 class __basic_file<char> 55 { 56 // Underlying data source/sink. 57 __c_file* _M_cfile; 58 59 // True iff we opened _M_cfile, and thus must close it ourselves. 60 bool _M_cfile_created; 61 62 public: 63 __basic_file(__c_lock* __lock = 0) throw (); 64 65 #if __cplusplus >= 201103L 66 __basic_file(__basic_file&& __rv, __c_lock* = 0) noexcept 67 : _M_cfile(__rv._M_cfile), _M_cfile_created(__rv._M_cfile_created) 68 { 69 __rv._M_cfile = nullptr; 70 __rv._M_cfile_created = false; 71 } 72 73 __basic_file& operator=(const __basic_file&) = delete; 74 __basic_file& operator=(__basic_file&&) = delete; 75 76 void 77 swap(__basic_file& __f) noexcept 78 { 79 std::swap(_M_cfile, __f._M_cfile); 80 std::swap(_M_cfile_created, __f._M_cfile_created); 81 } 82 #endif 83 84 __basic_file* 85 open(const char* __name, ios_base::openmode __mode, int __prot = 0664); 86 87 __basic_file* 88 sys_open(__c_file* __file, ios_base::openmode); 89 90 __basic_file* 91 sys_open(int __fd, ios_base::openmode __mode) throw (); 92 93 __basic_file* 94 close(); 95 96 _GLIBCXX_PURE bool 97 is_open() const throw (); 98 99 _GLIBCXX_PURE int 100 fd() throw (); 101 102 _GLIBCXX_PURE __c_file* 103 file() throw (); 104 105 ~__basic_file(); 106 107 streamsize 108 xsputn(const char* __s, streamsize __n); 109 110 streamsize 111 xsputn_2(const char* __s1, streamsize __n1, 112 const char* __s2, streamsize __n2); 113 114 streamsize 115 xsgetn(char* __s, streamsize __n); 116 117 streamoff 118 seekoff(streamoff __off, ios_base::seekdir __way) throw (); 119 120 int 121 sync(); 122 123 streamsize 124 showmanyc(); 125 }; 126 127 _GLIBCXX_END_NAMESPACE_VERSION 128 } // namespace 129 130 #endif 131