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# l4(qF
e ? // File based streams -*- C++ -*-
// Copyright (C) 1997-2021 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 3, 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.
// Under Section 7 of GPL version 3, you are granted additional
// permissions described in the GCC Runtime Library Exception, version
// 3.1, as published by the Free Software Foundation.
// You should have received a copy of the GNU General Public License and
// a copy of the GCC Runtime Library Exception along with this program;
// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
// .
/** @file bits/fstream.tcc
* This is an internal header file, included by other library headers.
* Do not attempt to use it directly. @headername{fstream}
*/
//
// ISO C++ 14882: 27.8 File-based streams
//
#ifndef _FSTREAM_TCC
#define _FSTREAM_TCC 1
#pragma GCC system_header
#include
#include // for swap
#include
namespace std _GLIBCXX_VISIBILITY(default)
{
_GLIBCXX_BEGIN_NAMESPACE_VERSION
template
void
basic_filebuf<_CharT, _Traits>::
_M_allocate_internal_buffer()
{
// Allocate internal buffer only if one doesn't already exist
// (either allocated or provided by the user via setbuf).
if (!_M_buf_allocated && !_M_buf)
{
_M_buf = new char_type[_M_buf_size];
_M_buf_allocated = true;
}
}
template
void
basic_filebuf<_CharT, _Traits>::
_M_destroy_internal_buffer() throw()
{
if (_M_buf_allocated)
{
delete [] _M_buf;
_M_buf = 0;
_M_buf_allocated = false;
}
delete [] _M_ext_buf;
_M_ext_buf = 0;
_M_ext_buf_size = 0;
_M_ext_next = 0;
_M_ext_end = 0;
}
template
basic_filebuf<_CharT, _Traits>::
basic_filebuf() : __streambuf_type(), _M_lock(), _M_file(&_M_lock),
_M_mode(ios_base::openmode(0)), _M_state_beg(), _M_state_cur(),
_M_state_last(), _M_buf(0), _M_buf_size(_GLIBCXX_BUFSIZ),
_M_buf_allocated(false), _M_reading(false), _M_writing(false), _M_pback(),
_M_pback_cur_save(0), _M_pback_end_save(0), _M_pback_init(false),
_M_codecvt(0), _M_ext_buf(0), _M_ext_buf_size(0), _M_ext_next(0),
_M_ext_end(0)
{
if (has_facet<__codecvt_type>(this->_M_buf_locale))
_M_codecvt = &use_facet<__codecvt_type>(this->_M_buf_locale);
}
#if __cplusplus >= 201103L
template
basic_filebuf<_CharT, _Traits>::
basic_filebuf(basic_filebuf&& __rhs)
: __streambuf_type(__rhs),
_M_lock(), _M_file(std::move(__rhs._M_file), &_M_lock),
_M_mode(std::__exchange(__rhs._M_mode, ios_base::openmode(0))),
_M_state_beg(std::move(__rhs._M_state_beg)),
_M_state_cur(std::move(__rhs._M_state_cur)),
_M_state_last(std::move(__rhs._M_state_last)),
_M_buf(std::__exchange(__rhs._M_buf, nullptr)),
_M_buf_size(std::__exchange(__rhs._M_buf_size, 1)),
_M_buf_allocated(std::__exchange(__rhs._M_buf_allocated, false)),
_M_reading(std::__exchange(__rhs._M_reading, false)),
_M_writing(std::__exchange(__rhs._M_writing, false)),
_M_pback(__rhs._M_pback),
_M_pback_cur_save(std::__exchange(__rhs._M_pback_cur_save, nullptr)),
_M_pback_end_save(std::__exchange(__rhs._M_pback_end_save, nullpt