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, 2006, 2007, 2009
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 3, 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 // Under Section 7 of GPL version 3, you are granted additional
00018 // permissions described in the GCC Runtime Library Exception, version
00019 // 3.1, as published by the Free Software Foundation.
00020 
00021 // You should have received a copy of the GNU General Public License and
00022 // a copy of the GCC Runtime Library Exception along with this program;
00023 // see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
00024 // <http://www.gnu.org/licenses/>.
00025 
00026 //
00027 // ISO C++ 14882: 27.8  File-based streams
00028 //
00029 
00030 /** @file basic_file.h
00031  *  This is an internal header file, included by other library headers.
00032  *  You should not attempt to use it directly.
00033  */
00034 
00035 #ifndef _GLIBCXX_BASIC_FILE_STDIO_H
00036 #define _GLIBCXX_BASIC_FILE_STDIO_H 1
00037 
00038 #pragma GCC system_header
00039 
00040 #include <bits/c++config.h>
00041 #include <bits/c++io.h>  // for __c_lock and __c_file
00042 #include <ios>
00043 
00044 _GLIBCXX_BEGIN_NAMESPACE(std)
00045 
00046   // Generic declaration.
00047   template<typename _CharT>
00048     class __basic_file; 
00049 
00050   // Specialization.
00051   template<>
00052     class __basic_file<char>
00053     {
00054       // Underlying data source/sink.
00055       __c_file*     _M_cfile;
00056 
00057       // True iff we opened _M_cfile, and thus must close it ourselves.
00058       bool      _M_cfile_created;
00059 
00060     public:
00061       __basic_file(__c_lock* __lock = 0);
00062 
00063       __basic_file* 
00064       open(const char* __name, ios_base::openmode __mode, int __prot = 0664);
00065 
00066       __basic_file*
00067       sys_open(__c_file* __file, ios_base::openmode);
00068 
00069       __basic_file*
00070       sys_open(int __fd, ios_base::openmode __mode);
00071 
00072       __basic_file* 
00073       close(); 
00074 
00075       bool 
00076       is_open() const;
00077 
00078       int 
00079       fd();
00080 
00081       __c_file*
00082       file();
00083 
00084       ~__basic_file();
00085 
00086       streamsize 
00087       xsputn(const char* __s, streamsize __n);
00088 
00089       streamsize 
00090       xsputn_2(const char* __s1, streamsize __n1,
00091            const char* __s2, streamsize __n2);
00092 
00093       streamsize 
00094       xsgetn(char* __s, streamsize __n);
00095 
00096       streamoff
00097       seekoff(streamoff __off, ios_base::seekdir __way);
00098 
00099       int 
00100       sync();
00101 
00102       streamsize
00103       showmanyc();
00104     };
00105 
00106 _GLIBCXX_END_NAMESPACE
00107 
00108 #endif  

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