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// 2003-05-03  Petur Runolfsson  <peturr02@ru.is>

// Copyright (C) 2003 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.

// 27.8.1.4 Overridden virtual functions

#include <fstream>

#include <locale>

#include <string>

#include <testsuite_hooks.h>

// Check that basic_filebuf::underflow() handles

// codecvt::always_noconv() == false and codecvt::in() == noconv.

class NoconvCvt : public std::codecvt<char, char, std::mbstate_t>

{

protected:

  virtual bool

  do_always_noconv() const throw()

  { return false; }

  virtual result

  do_in(state_type&, const char* from, const char*, const char*& from_next,

        char* to, char*, char*& to_next)

  {

    from_next = from;

    to_next = to;

    return noconv;

  }

};

void test01()

{

  using namespace std;

  bool test __attribute__((unused)) = true;

  const char* name = "filebuf_virtuals-1.txt";

  string str;

  filebuf fb;

  filebuf::int_type c1;

  if (fb.open(name, ios_base::in))

    {

      while ((c1 = fb.sbumpc()) != EOF)

        str.push_back(filebuf::traits_type::to_char_type(c1));

      fb.close();

    }

  locale loc(locale::classic(), new NoconvCvt);

  fb.pubimbue(loc);

  if (fb.open(name, ios_base::in))

    {

      for (string::iterator i = str.begin(); i != str.end(); ++i)

        {

          c1 = fb.sbumpc();

          VERIFY( c1 != filebuf::traits_type::eof() );

          VERIFY( c1 == filebuf::traits_type::to_int_type(*i) );

        }

      VERIFY( fb.sgetc() == filebuf::traits_type::eof() );

      fb.close();

    }

}

int main()

{

  test01();

  return 0;

}