libstdc++-v3/config/io/basic_file_stdio.h

   1 // Wrapper of C-language FILE struct -*- C++ -*-
   2
   3 // Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2009, 2010
   4 // Free Software Foundation, Inc.
   5 //
   6 // This file is part of the GNU ISO C++ Library.  This library is free
   7 // software; you can redistribute it and/or modify it under the
   8 // terms of the GNU General Public License as published by the
   9 // Free Software Foundation; either version 3, or (at your option)
  10 // any later version.
  11
  12 // This library is distributed in the hope that it will be useful,
  13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 // GNU General Public License for more details.
  16
  17 // Under Section 7 of GPL version 3, you are granted additional
  18 // permissions described in the GCC Runtime Library Exception, version
  19 // 3.1, as published by the Free Software Foundation.
  20
  21 // You should have received a copy of the GNU General Public License and
  22 // a copy of the GCC Runtime Library Exception along with this program;
  23 // see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  24 // <http://www.gnu.org/licenses/>.
  25
  26 //
  27 // ISO C++ 14882: 27.8  File-based streams
  28 //
  29
  30 /** @file bits/basic_file.h
  31  *  This is an internal header file, included by other library headers.
  32  *  Do not attempt to use it directly. @headername{ios}
  33  */
  34
  35 #ifndef _GLIBCXX_BASIC_FILE_STDIO_H
  36 #define _GLIBCXX_BASIC_FILE_STDIO_H 1
  37
  38 #pragma GCC system_header
  39
  40 #include <bits/c++config.h>
  41 #include <bits/c++io.h>  // for __c_lock and __c_file
  42 #include <ios>
  43
  44 _GLIBCXX_BEGIN_NAMESPACE(std)
  45
  46   // Generic declaration.
  47   template<typename _CharT>
  48     class __basic_file;
  49
  50   // Specialization.
  51   template<>
  52     class __basic_file<char>
  53     {
  54       // Underlying data source/sink.
  55       __c_file*         _M_cfile;
  56
  57       // True iff we opened _M_cfile, and thus must close it ourselves.
  58       bool              _M_cfile_created;
  59
  60     public:
  61       __basic_file(__c_lock* __lock = 0) throw ();
  62
  63       __basic_file*
  64       open(const char* __name, ios_base::openmode __mode, int __prot = 0664);
  65
  66       __basic_file*
  67       sys_open(__c_file* __file, ios_base::openmode);
  68
  69       __basic_file*
  70       sys_open(int __fd, ios_base::openmode __mode) throw ();
  71
  72       __basic_file*
  73       close();
  74
  75       _GLIBCXX_PURE bool
  76       is_open() const throw ();
  77
  78       _GLIBCXX_PURE int
  79       fd() throw ();
  80
  81       _GLIBCXX_PURE __c_file*
  82       file() throw ();
  83
  84       ~__basic_file();
  85
  86       streamsize
  87       xsputn(const char* __s, streamsize __n);
  88
  89       streamsize
  90       xsputn_2(const char* __s1, streamsize __n1,
  91                const char* __s2, streamsize __n2);
  92
  93       streamsize
  94       xsgetn(char* __s, streamsize __n);
  95
  96       streamoff
  97       seekoff(streamoff __off, ios_base::seekdir __way) throw ();
  98
  99       int
 100       sync();
 101
 102       streamsize
 103       showmanyc();
 104     };
 105
 106 _GLIBCXX_END_NAMESPACE
 107
 108 #endif