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// 1999-10-11 bkoz

// Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 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.

// You should have received a copy of the GNU General Public License along

// with this library; see the file COPYING3.  If not see

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

// 27.5.2 template class basic_streambuf

#include <streambuf>

#include <cwchar>

#include <testsuite_hooks.h>

class testbuf : public std::wstreambuf

{

public:

  // Typedefs:

  typedef std::wstreambuf::traits_type traits_type;

  typedef std::wstreambuf::char_type char_type;

  testbuf(): std::wstreambuf()

  { }

  bool

  check_pointers()

  {

    bool test __attribute__((unused)) = true;

    VERIFY( this->eback() == NULL );

    VERIFY( this->gptr() == NULL );

    VERIFY( this->egptr() == NULL );

    VERIFY( this->pbase() == NULL );

    VERIFY( this->pptr() == NULL );

    VERIFY( this->epptr() == NULL );

    return test;

  }

  int_type

  pub_uflow()

  { return (this->uflow()); }

  int_type

  pub_overflow(int_type __c = traits_type::eof())

  { return (this->overflow(__c)); }

  int_type

  pub_pbackfail(int_type __c)

  { return (this->pbackfail(__c)); }

  void

  pub_setg(wchar_t* beg, wchar_t* cur, wchar_t* end)

  { this->setg(beg, cur, end); }

  void

  pub_setp(wchar_t* beg, wchar_t* end)

  { this->setp(beg, end); }

protected:

  int_type

  underflow()

  {

    int_type __retval = traits_type::eof();

    if (this->gptr() < this->egptr())

      __retval = traits_type::not_eof(0);

    return __retval;

  }

};

void test02()

{

  typedef testbuf::traits_type traits_type;

  typedef testbuf::int_type int_type;

  bool test __attribute__((unused)) = true;

  wchar_t lit01[] = L"chicago underground trio/possible cube on delmark";

  size_t i01 = traits_type::length(lit01);

  testbuf buf01;

  // 27.5.2.1 basic_streambuf ctors

  // default ctor initializes 

  // - all pointer members to null pointers

  // - locale to current global locale

  VERIFY( buf01.check_pointers() );

  VERIFY( buf01.getloc() == std::locale() );

  // 27.5.2.2.5 Put area

  wchar_t carray01[i01];

  std::wmemset(carray01, 0, i01);

  buf01.pub_setg(lit01, lit01, lit01 + i01);

  buf01.sgetn(carray01, 0);

  VERIFY( carray01[0] == 0 );

  buf01.sgetn(carray01, 1);

  VERIFY( carray01[0] == L'c' );

  buf01.sgetn(carray01 + 1, i01 - 1);

  VERIFY( carray01[0] == L'c' );

  VERIFY( carray01[1] == L'h' );

  VERIFY( carray01[i01 - 1] == L'k' );

}

int main()

{

  test02();

  return 0;

}