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// Copyright (C) 2004 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.

// 27.6.1.3 unformatted input functions

#include <cwchar> // for wcslen

#include <istream>

#include <testsuite_hooks.h>

class Inbuf : public std::wstreambuf

{

  static const wchar_t buf[];

  const wchar_t* current;

  int size;

public:

  Inbuf()

  {

    current = buf;

    size = std::wcslen(buf);

  }

  int_type underflow()

  {

    if (current < buf + size)

      return traits_type::to_int_type(*current);

    return traits_type::eof();

  }

  int_type uflow()

  {

    if (current < buf + size)

      return traits_type::to_int_type(*current++);

    return traits_type::eof();

  }

};

const wchar_t Inbuf::buf[] = L"1234567890abcdefghij";

void test01()

{

  using namespace std;

  bool test __attribute__((unused)) = true;

  typedef char_traits<wchar_t>   traits_type;

  Inbuf inbuf1;

  wistream is(&inbuf1);

  wchar_t buffer[10];

  traits_type::assign(buffer, sizeof(buffer) / sizeof(wchar_t), L'X');

  is.getline(buffer, sizeof(buffer) / sizeof(wchar_t), L'0');

  VERIFY( is.rdstate() == ios_base::goodbit );

  VERIFY( !traits_type::compare(buffer, L"123456789\0",

                                sizeof(buffer) / sizeof(wchar_t)) );

  VERIFY( is.gcount() == 10 );

  is.clear();

  traits_type::assign(buffer, sizeof(buffer) / sizeof(wchar_t), L'X');

  is.getline(buffer, sizeof(buffer) / sizeof(wchar_t));

  VERIFY( is.rdstate() == ios_base::failbit );

  VERIFY( !traits_type::compare(buffer, L"abcdefghi\0",

                                sizeof(buffer) / sizeof(wchar_t)) );

  VERIFY( is.gcount() == 9 );

  is.clear();

  traits_type::assign(buffer, sizeof(buffer) / sizeof(wchar_t), L'X');

  is.getline(buffer, sizeof(buffer) / sizeof(wchar_t));

  VERIFY( is.rdstate() == ios_base::eofbit );

  VERIFY( !traits_type::compare(buffer, L"j\0XXXXXXXX",

                                sizeof(buffer) / sizeof(wchar_t)) );

  VERIFY( is.gcount() == 1 );

  is.clear();

  traits_type::assign(buffer, sizeof(buffer) / sizeof(wchar_t), L'X');

  is.getline(buffer, sizeof(buffer) / sizeof(wchar_t));

  VERIFY( is.rdstate() == (ios_base::eofbit | ios_base::failbit) );

  VERIFY( !traits_type::compare(buffer, L"\0XXXXXXXXX",

                                sizeof(buffer) / sizeof(wchar_t)) );

  VERIFY( is.gcount() == 0 );

}

int main()

{

  test01();

  return 0;

}