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
_GLIBCXX_VISIBILITY(default)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