1 // Wrapper of C-language FILE struct -*- C++ -*-
2
3 // Copyright (C) 2000-2019 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 #if _GLIBCXX_HAVE__WFOPEN && _GLIBCXX_USE_WCHAR_T
88 __basic_file*
89 open(const wchar_t* __name, ios_base::openmode __mode);
90 #endif
91
92 __basic_file*
93 sys_open(__c_file* __file, ios_base::openmode);
94
95 __basic_file*
96 sys_open(int __fd, ios_base::openmode __mode) throw ();
97
98 __basic_file*
99 close();
100
101 _GLIBCXX_PURE bool
102 is_open() const throw ();
103
104 _GLIBCXX_PURE int
105 fd() throw ();
106
107 _GLIBCXX_PURE __c_file*
108 file() throw ();
109
110 ~__basic_file();
111
112 streamsize
113 xsputn(const char* __s, streamsize __n);
114
115 streamsize
116 xsputn_2(const char* __s1, streamsize __n1,
117 const char* __s2, streamsize __n2);
118
119 streamsize
120 xsgetn(char* __s, streamsize __n);
121
122 streamoff
123 seekoff(streamoff __off, ios_base::seekdir __way) throw ();
124
125 int
126 sync();
127
128 streamsize
129 showmanyc();
130 };
131
132 _GLIBCXX_END_NAMESPACE_VERSION
133 } // namespace
134
135 #endif
136