libstdc++
basic_file.h
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1 // Wrapper of C-language FILE struct -*- C++ -*-
2 
3 // Copyright (C) 2000-2014 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 <ios>
42 
43 namespace std _GLIBCXX_VISIBILITY(default)
44 {
45 _GLIBCXX_BEGIN_NAMESPACE_VERSION
46 
47  // Generic declaration.
48  template<typename _CharT>
49  class __basic_file;
50 
51  // Specialization.
52  template<>
53  class __basic_file<char>
54  {
55  // Underlying data source/sink.
56  __c_file* _M_cfile;
57 
58  // True iff we opened _M_cfile, and thus must close it ourselves.
59  bool _M_cfile_created;
60 
61  public:
62  __basic_file(__c_lock* __lock = 0) throw ();
63 
64  __basic_file*
65  open(const char* __name, ios_base::openmode __mode, int __prot = 0664);
66 
67  __basic_file*
68  sys_open(__c_file* __file, ios_base::openmode);
69 
70  __basic_file*
71  sys_open(int __fd, ios_base::openmode __mode) throw ();
72 
73  __basic_file*
74  close();
75 
76  _GLIBCXX_PURE bool
77  is_open() const throw ();
78 
79  _GLIBCXX_PURE int
80  fd() throw ();
81 
82  _GLIBCXX_PURE __c_file*
83  file() throw ();
84 
85  ~__basic_file();
86 
87  streamsize
88  xsputn(const char* __s, streamsize __n);
89 
90  streamsize
91  xsputn_2(const char* __s1, streamsize __n1,
92  const char* __s2, streamsize __n2);
93 
94  streamsize
95  xsgetn(char* __s, streamsize __n);
96 
97  streamoff
98  seekoff(streamoff __off, ios_base::seekdir __way) throw ();
99 
100  int
101  sync();
102 
103  streamsize
104  showmanyc();
105  };
106 
107 _GLIBCXX_END_NAMESPACE_VERSION
108 } // namespace
109 
110 #endif
long long streamoff
Type used by fpos, char_traits, and char_traits.
Definition: postypes.h:94
ptrdiff_t streamsize
Integral type for I/O operation counts and buffer sizes.
Definition: postypes.h:98
ISO C++ entities toplevel namespace is std.