mirror of
git://gcc.gnu.org/git/gcc.git
synced 2024-12-22 23:09:54 +08:00
5cdd50a591
2002-04-30 Benjamin Kosnik <bkoz@redhat.com> * include/ext/stdio_filebuf.h: New file. * include/ext/enc_filebuf.h: New file. * config/io/basic_file_stdio.h (__basic_file::sys_open): Add fd ctor. * config/io/basic_file_stdio.cc: Same. * include/bits/fstream.tcc (filebuf::_M_allocate_internal_buffer): Remove _M_unbuf hacks. (filebuf::_M_destroy_internal_buffer): Same. (filebuf::filebuf(cfile, openmode, int_type): Remove definition. (filebuf::fd): Remove. * include/std/std_fstream.h (filebuf::_M_unbuf): Remove. (filebuf::filebuf(__c_file*, openmode, int_type)): Remove. (filebuf::fd): Remove. * src/ios.cc (ios_base::_S_ios_create): Change to use specialized filebufs. (ios_base::_S_ios_destroy): Same. * src/misc-inst.cc (file_filebuf<char>): Add instantiation. * include/Makefile.am (ext_headers): Add ext_filebuf.h, stdio_filebuf.h. * include/Makefile.in: Regenerate. From-SVN: r52961
114 lines
3.4 KiB
C++
114 lines
3.4 KiB
C++
// 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
|