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
   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 2, 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 // You should have received a copy of the GNU General Public License along
  18 // with this library; see the file COPYING.  If not, write to the Free
  19 // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
  20 // USA.
  21
  22 // As a special exception, you may use this file as part of a free software
  23 // library without restriction.  Specifically, if other files instantiate
  24 // templates or use macros or inline functions from this file, or you compile
  25 // this file and link it with other files to produce an executable, this
  26 // file does not by itself cause the resulting executable to be covered by
  27 // the GNU General Public License.  This exception does not however
  28 // invalidate any other reasons why the executable file might be covered by
  29 // the GNU General Public License.
  30
  31 //
  32 // ISO C++ 14882: 27.8  File-based streams
  33 //
  34
  35 /** @file basic_file.h
  36  *  This is an internal header file, included by other library headers.
  37  *  You should not attempt to use it directly.
  38  */
  39
  40 #ifndef _BASIC_FILE_STDIO_H
  41 #define _BASIC_FILE_STDIO_H 1
  42
  43 #pragma GCC system_header
  44
  45 #include <bits/c++config.h>
  46 #include <ios>
  47
  48 _GLIBCXX_BEGIN_NAMESPACE(std)
  49
  50   // Generic declaration.
  51   template<typename _CharT>
  52     class __basic_file;
  53
  54   // Specialization.
  55   template<>
  56     class __basic_file<char>
  57     {
  58       // Underlying data source/sink.
  59       __c_file*         _M_cfile;
  60
  61       // True iff we opened _M_cfile, and thus must close it ourselves.
  62       bool              _M_cfile_created;
  63
  64     public:
  65       __basic_file(__c_lock* __lock = 0);
  66
  67       __basic_file*
  68       open(const char* __name, ios_base::openmode __mode, int __prot = 0664);
  69
  70       __basic_file*
  71       sys_open(__c_file* __file, ios_base::openmode);
  72
  73       __basic_file*
  74       sys_open(int __fd, ios_base::openmode __mode);
  75
  76       __basic_file*
  77       close();
  78
  79       bool
  80       is_open() const;
  81
  82       int
  83       fd();
  84
  85       __c_file*
  86       file();
  87
  88       ~__basic_file();
  89
  90       streamsize
  91       xsputn(const char* __s, streamsize __n);
  92
  93       streamsize
  94       xsputn_2(const char* __s1, streamsize __n1,
  95                const char* __s2, streamsize __n2);
  96
  97       streamsize
  98       xsgetn(char* __s, streamsize __n);
  99
 100       streamoff
 101       seekoff(streamoff __off, ios_base::seekdir __way);
 102
 103       int
 104       sync();
 105
 106       streamsize
 107       showmanyc();
 108     };
 109
 110 _GLIBCXX_END_NAMESPACE
 111
 112 #endif