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// Stream buffer classes -*- C++ -*-

// Copyright (C) 2004, 2005, 2006, 2009 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

// <http://www.gnu.org/licenses/>.

//

// 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