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// 1999-10-11 bkoz

// Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,

// 2007, 2009, 2010

// 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 <cstring>

#include <testsuite_hooks.h>

class testbuf : public std::streambuf

{

public:

  // Typedefs:

  typedef std::streambuf::traits_type traits_type;

  typedef std::streambuf::char_type char_type;

  testbuf(): std::streambuf()

  { }

  bool

  check_pointers()

  {

    bool test __attribute__((unused)) = true;

    VERIFY( !this->eback() );

    VERIFY( !this->gptr() );

    VERIFY( !this->egptr() );

    VERIFY( !this->pbase() );

    VERIFY( !this->pptr() );

    VERIFY( !this->epptr() );

    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(char* beg, char* cur, char *end)

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

  void

  pub_setp(char* beg, char* 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 test01()

{

  typedef testbuf::traits_type traits_type;

  typedef testbuf::int_type int_type;

  bool test __attribute__((unused)) = true;

  testbuf buf01;

  // sputn/xsputn

  char lit02[] = "isotope 217: the unstable molecule on thrill jockey";

  const int i02 = std::strlen(lit02);

  char carray[i02 + 1];

  std::memset(carray, 0, i02 + 1);

  buf01.pub_setp(carray, (carray + i02));

  buf01.sputn(lit02, 0);

  VERIFY( carray[0] == 0 );

  VERIFY( lit02[0] == 'i' );

  buf01.sputn(lit02, 1);

  VERIFY( lit02[0] == carray[0] );

  VERIFY( lit02[1] == 's' );

  VERIFY( carray[1] == 0 );

  buf01.sputn(lit02 + 1, 10);

  VERIFY( std::memcmp(lit02, carray, 10) == 0 );

  buf01.sputn(lit02 + 11, 20);

  VERIFY( std::memcmp(lit02, carray, 30) == 0 );

}

int main()

{

  test01();

  return 0;

}