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// Copyright (C) 2004, 2005 Free Software Foundation

//

// 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.

// 27.6.1.2.3 character extractors

#include <istream>

#include <sstream>

#include <testsuite_hooks.h>

void test01()

{

  bool test __attribute__((unused)) = true;

  std::wstring str_01;

  const std::wstring str_02(L"coltrane playing 'softly as a morning sunrise'");

  const std::wstring str_03(L"coltrane");

  std::wstringbuf isbuf_01(std::ios_base::in);

  std::wstringbuf isbuf_02(str_02, std::ios_base::in);

  std::wistream is_01(NULL);

  std::wistream is_02(&isbuf_02);

  std::ios_base::iostate state1, state2, statefail;

  statefail = std::ios_base::failbit;

  // template<_CharT, _Traits>

  //  basic_istream& operator>>(istream&, _CharT*)

  const int n = 20;

  wchar_t array1[n];

  array1[0] = L'\0';

  typedef std::wios::traits_type ctraits_type;

  ctraits_type::int_type i1, i2;

  state1 = is_01.rdstate();

  i1 = ctraits_type::length(array1);

  is_01 >> array1;   // should snake 0 characters, not alter stream state

  i2 = ctraits_type::length(array1);

  state2 = is_01.rdstate();

  VERIFY( i1 == i2 );

  VERIFY( state1 != state2 );

  VERIFY( static_cast<bool>(state2 & statefail) );

  state1 = is_02.rdstate();

  is_02 >> array1;   // should snake L"coltrane"

  state2 = is_02.rdstate();

  VERIFY( state1 == state2 );

  VERIFY( !static_cast<bool>(state2 & statefail) );

  VERIFY( array1[str_03.size() - 1] == L'e' );

  array1[str_03.size()] = L'\0';

  VERIFY( !str_03.compare(0, str_03.size(), array1) );

  std::wistream::int_type int1 = is_02.peek(); // should be L' '

  VERIFY( int1 == L' ' );

  state1 = is_02.rdstate();

  is_02 >> array1;   // should snake L"playing" as sentry "eats" ws

  state2 = is_02.rdstate();

  int1 = is_02.peek(); // should be L' '

  VERIFY( int1 == L' ' );

  VERIFY( state1 == state2 );

  VERIFY( !static_cast<bool>(state2 & statefail) );

}

int main()

{

  test01();

  return 0;

}