basic_file.h

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00001 // Wrapper of C-language FILE struct -*- C++ -*-
00002 
00003 // Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005
00004 // Free Software Foundation, Inc.
00005 //
00006 // This file is part of the GNU ISO C++ Library.  This library is free
00007 // software; you can redistribute it and/or modify it under the
00008 // terms of the GNU General Public License as published by the
00009 // Free Software Foundation; either version 2, or (at your option)
00010 // any later version.
00011 
00012 // This library is distributed in the hope that it will be useful,
00013 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00014 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00015 // GNU General Public License for more details.
00016 
00017 // You should have received a copy of the GNU General Public License along
00018 // with this library; see the file COPYING.  If not, write to the Free
00019 // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
00020 // USA.
00021 
00022 // As a special exception, you may use this file as part of a free software
00023 // library without restriction.  Specifically, if other files instantiate
00024 // templates or use macros or inline functions from this file, or you compile
00025 // this file and link it with other files to produce an executable, this
00026 // file does not by itself cause the resulting executable to be covered by
00027 // the GNU General Public License.  This exception does not however
00028 // invalidate any other reasons why the executable file might be covered by
00029 // the GNU General Public License.
00030 
00031 //
00032 // ISO C++ 14882: 27.8  File-based streams
00033 //
00034 
00035 /** @file basic_file.h
00036  *  This is an internal header file, included by other library headers.
00037  *  You should not attempt to use it directly.
00038  */
00039 
00040 #ifndef _BASIC_FILE_STDIO_H
00041 #define _BASIC_FILE_STDIO_H 1
00042 
00043 #pragma GCC system_header
00044 
00045 #include <bits/c++config.h>
00046 #include <ios>
00047 
00048 _GLIBCXX_BEGIN_NAMESPACE(std)
00049 
00050   // Generic declaration.
00051   template<typename _CharT>
00052     class __basic_file; 
00053 
00054   // Specialization.
00055   template<>
00056     class __basic_file<char>
00057     {
00058       // Underlying data source/sink.
00059       __c_file*     _M_cfile;
00060 
00061       // True iff we opened _M_cfile, and thus must close it ourselves.
00062       bool      _M_cfile_created;
00063 
00064     public:
00065       __basic_file(__c_lock* __lock = 0);
00066 
00067       __basic_file* 
00068       open(const char* __name, ios_base::openmode __mode, int __prot = 0664);
00069 
00070       __basic_file*
00071       sys_open(__c_file* __file, ios_base::openmode);
00072 
00073       __basic_file*
00074       sys_open(int __fd, ios_base::openmode __mode);
00075 
00076       __basic_file* 
00077       close(); 
00078 
00079       bool 
00080       is_open() const;
00081 
00082       int 
00083       fd();
00084 
00085       __c_file*
00086       file();
00087 
00088       ~__basic_file();
00089 
00090       streamsize 
00091       xsputn(const char* __s, streamsize __n);
00092 
00093       streamsize 
00094       xsputn_2(const char* __s1, streamsize __n1,
00095            const char* __s2, streamsize __n2);
00096 
00097       streamsize 
00098       xsgetn(char* __s, streamsize __n);
00099 
00100       streamoff
00101       seekoff(streamoff __off, ios_base::seekdir __way);
00102 
00103       int 
00104       sync();
00105 
00106       streamsize
00107       showmanyc();
00108     };
00109 
00110 _GLIBCXX_END_NAMESPACE
00111 
00112 #endif  

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