119 lines
3.4 KiB
C++
119 lines
3.4 KiB
C++
// Stream buffer classes -*- C++ -*-
|
|
|
|
// Copyright (C) 2004, 2005, 2006 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, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
|
|
// 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.
|
|
|
|
//
|
|
// ISO C++ 14882: 27.5 Stream buffers
|
|
//
|
|
|
|
#include <streambuf>
|
|
|
|
_GLIBCXX_BEGIN_NAMESPACE(std)
|
|
|
|
template<>
|
|
streamsize
|
|
__copy_streambufs_eof(basic_streambuf<char>* __sbin,
|
|
basic_streambuf<char>* __sbout, bool& __ineof)
|
|
{
|
|
typedef basic_streambuf<char>::traits_type traits_type;
|
|
streamsize __ret = 0;
|
|
__ineof = true;
|
|
traits_type::int_type __c = __sbin->sgetc();
|
|
while (!traits_type::eq_int_type(__c, traits_type::eof()))
|
|
{
|
|
const streamsize __n = __sbin->egptr() - __sbin->gptr();
|
|
if (__n > 1)
|
|
{
|
|
const streamsize __wrote = __sbout->sputn(__sbin->gptr(), __n);
|
|
__sbin->gbump(__wrote);
|
|
__ret += __wrote;
|
|
if (__wrote < __n)
|
|
{
|
|
__ineof = false;
|
|
break;
|
|
}
|
|
__c = __sbin->underflow();
|
|
}
|
|
else
|
|
{
|
|
__c = __sbout->sputc(traits_type::to_char_type(__c));
|
|
if (traits_type::eq_int_type(__c, traits_type::eof()))
|
|
{
|
|
__ineof = false;
|
|
break;
|
|
}
|
|
++__ret;
|
|
__c = __sbin->snextc();
|
|
}
|
|
}
|
|
return __ret;
|
|
}
|
|
|
|
#ifdef _GLIBCXX_USE_WCHAR_T
|
|
template<>
|
|
streamsize
|
|
__copy_streambufs_eof(basic_streambuf<wchar_t>* __sbin,
|
|
basic_streambuf<wchar_t>* __sbout, bool& __ineof)
|
|
{
|
|
typedef basic_streambuf<wchar_t>::traits_type traits_type;
|
|
streamsize __ret = 0;
|
|
__ineof = true;
|
|
traits_type::int_type __c = __sbin->sgetc();
|
|
while (!traits_type::eq_int_type(__c, traits_type::eof()))
|
|
{
|
|
const streamsize __n = __sbin->egptr() - __sbin->gptr();
|
|
if (__n > 1)
|
|
{
|
|
const streamsize __wrote = __sbout->sputn(__sbin->gptr(), __n);
|
|
__sbin->gbump(__wrote);
|
|
__ret += __wrote;
|
|
if (__wrote < __n)
|
|
{
|
|
__ineof = false;
|
|
break;
|
|
}
|
|
__c = __sbin->underflow();
|
|
}
|
|
else
|
|
{
|
|
__c = __sbout->sputc(traits_type::to_char_type(__c));
|
|
if (traits_type::eq_int_type(__c, traits_type::eof()))
|
|
{
|
|
__ineof = false;
|
|
break;
|
|
}
|
|
++__ret;
|
|
__c = __sbin->snextc();
|
|
}
|
|
}
|
|
return __ret;
|
|
}
|
|
#endif
|
|
|
|
_GLIBCXX_END_NAMESPACE
|