# basic_file.h

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    00001 // Wrapper of C-language FILE struct -*- C++ -*-
    00002
    00003 // Copyright (C) 2000, 2001, 2002 Free Software Foundation, Inc.
    00004 //
    00005 // This file is part of the GNU ISO C++ Library.  This library is free
    00006 // software; you can redistribute it and/or modify it under the
    00007 // terms of the GNU General Public License as published by the
    00008 // Free Software Foundation; either version 2, or (at your option)
    00009 // any later version.
    00010
    00011 // This library is distributed in the hope that it will be useful,
    00012 // but WITHOUT ANY WARRANTY; without even the implied warranty of
    00013 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    00014 // GNU General Public License for more details.
    00015
    00016 // You should have received a copy of the GNU General Public License along
    00017 // with this library; see the file COPYING.  If not, write to the Free
    00018 // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
    00019 // USA.
    00020
    00021 // As a special exception, you may use this file as part of a free software
    00022 // library without restriction.  Specifically, if other files instantiate
    00023 // templates or use macros or inline functions from this file, or you compile
    00024 // this file and link it with other files to produce an executable, this
    00025 // file does not by itself cause the resulting executable to be covered by
    00026 // the GNU General Public License.  This exception does not however
    00027 // invalidate any other reasons why the executable file might be covered by
    00028 // the GNU General Public License.
    00029
    00030 //
    00031 // ISO C++ 14882: 27.8  File-based streams
    00032 //
    00033
    00039 #ifndef _CPP_BASIC_FILE
    00040 #define _CPP_BASIC_FILE 1
    00041
    00042 #pragma GCC system_header
    00043
    00044 #include <bits/c++config.h>
    00045 #include <ios>
    00046
    00047 namespace std
    00048 {
    00049   // Generic declaration.
    00050   template<typename _CharT>
    00051     class __basic_file;
    00052
    00053   // Specialization.
    00054   template<>
    00055     class __basic_file<char>
    00056     {
    00057       // Underlying data source/sink.
    00058       __c_file*     _M_cfile;
    00059       // True iff we opened _M_cfile, and thus must close it ourselves.
    00060       bool      _M_cfile_created;
    00061
    00062     public:
    00063       __basic_file(__c_lock* __lock = 0);
    00064
    00065       void
    00066       _M_open_mode(ios_base::openmode __mode, int& __p_mode, int& __rw_mode,
    00067            char* __c_mode);
    00068
    00069       __basic_file*
    00070       open(const char* __name, ios_base::openmode __mode, int __prot = 0664);
    00071
    00072       __basic_file*
    00073       sys_open(__c_file* __file, ios_base::openmode);
    00074
    00075       __basic_file*
    00076       sys_open(int __fd, ios_base::openmode __mode, bool __del);
    00077
    00078       int
    00079       sys_getc();
    00080
    00081       int
    00082       sys_ungetc(int);
    00083
    00084       __basic_file*
    00085       close();
    00086
    00087       bool
    00088       is_open() const;
    00089
    00090       int
    00091       fd();
    00092
    00093       ~__basic_file();
    00094
    00095       streamsize
    00096       xsputn(const char* __s, streamsize __n);
    00097
    00098       streamsize
    00099       xsgetn(char* __s, streamsize __n);
    00100
    00101       streamoff
    00102       seekoff(streamoff __off, ios_base::seekdir __way,
    00103           ios_base::openmode __mode = ios_base::in | ios_base::out);
    00104
    00105       streamoff
    00106       seekpos(streamoff __pos,
    00107           ios_base::openmode __mode = ios_base::in | ios_base::out);
    00108
    00109       int
    00110       sync();
    00111     };
    00112 }  // namespace std
    00113
    00114 #endif  // _CPP_BASIC_FILE