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// File descriptor layer for filebuf -*- C++ -*-
// Copyright (C) 2002 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 2, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING. If not, write to the Free
// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
// USA.
// As a special exception, you may use this file as part of a free software
// library without restriction. Specifically, if other files instantiate
// templates or use macros or inline functions from this file, or you compile
// this file and link it with other files to produce an executable, this
// file does not by itself cause the resulting executable to be covered by
// the GNU General Public License. This exception does not however
// invalidate any other reasons why the executable file might be covered by
// the GNU General Public License.
#include <fstream>
namespace __gnu_cxx
{
template<typename _CharT, typename _Traits = std::char_traits<_CharT> >
class stdio_filebuf : public std::basic_filebuf<_CharT, _Traits>
{
public:
// Types:
typedef _CharT char_type;
typedef _Traits traits_type;
typedef typename traits_type::int_type int_type;
typedef typename traits_type::pos_type pos_type;
typedef typename traits_type::off_type off_type;
protected:
// Stack-based buffer for unbuffered input.
char_type _M_unbuf[4];
public:
stdio_filebuf(int __fd, std::ios_base::openmode __mode, bool __del,
int_type __size);
stdio_filebuf(std::__c_file* __f, std::ios_base::openmode __mode,
int_type __size = static_cast<int_type>(BUFSIZ));
virtual
~stdio_filebuf();
int
fd()
{ return _M_file.fd(); }
};
template<typename _CharT, typename _Traits>
stdio_filebuf<_CharT, _Traits>::~stdio_filebuf()
{ }
template<typename _CharT, typename _Traits>
stdio_filebuf<_CharT, _Traits>::
stdio_filebuf(int __fd, std::ios_base::openmode __mode, bool __del,
int_type __size)
{
_M_file.sys_open(__fd, __mode, __del);
if (this->is_open())
{
_M_mode = __mode;
_M_buf_size_opt = __size;
if (__size > 0 && __size < 4)
{
_M_buf = _M_unbuf;
_M_buf_size = __size;
}
else
_M_allocate_internal_buffer();
_M_set_indeterminate();
}
}
template<typename _CharT, typename _Traits>
stdio_filebuf<_CharT, _Traits>::
stdio_filebuf(std::__c_file* __f, std::ios_base::openmode __mode,
int_type __size)
{
_M_file.sys_open(__f, __mode);
if (this->is_open())
{
_M_mode = __mode;
_M_buf_size_opt = __size;
if (__size > 0 && __size < 4)
{
_M_buf = _M_unbuf;
_M_buf_size = __size;
}
else
_M_allocate_internal_buffer();
_M_set_indeterminate();
}
}
} // namespace __gnu_cxx
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