1// Copyright (C) 2004, 2005 Free Software Foundation
2//
3// This file is part of the GNU ISO C++ Library.  This library is free
4// software; you can redistribute it and/or modify it under the
5// terms of the GNU General Public License as published by the
6// Free Software Foundation; either version 2, or (at your option)
7// any later version.
8
9// This library is distributed in the hope that it will be useful,
10// but WITHOUT ANY WARRANTY; without even the implied warranty of
11// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12// GNU General Public License for more details.
13
14// You should have received a copy of the GNU General Public License along
15// with this library; see the file COPYING.  If not, write to the Free
16// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
17// USA.
18
19// 27.6.1.2.3 character extractors
20
21#include <istream>
22#include <sstream>
23#include <testsuite_hooks.h>
24
25void test01()
26{
27  bool test __attribute__((unused)) = true;
28  std::wstring str_01;
29  const std::wstring str_02(L"coltrane playing 'softly as a morning sunrise'");
30  const std::wstring str_03(L"coltrane");
31
32  std::wstringbuf isbuf_01(std::ios_base::in);
33  std::wstringbuf isbuf_02(str_02, std::ios_base::in);
34  std::wistream is_01(NULL);
35  std::wistream is_02(&isbuf_02);
36
37  std::ios_base::iostate state1, state2, statefail;
38  statefail = std::ios_base::failbit;
39
40  // template<_CharT, _Traits>
41  //  basic_istream& operator>>(istream&, _CharT*)
42  const int n = 20;
43  wchar_t array1[n];
44  array1[0] = L'\0';
45  typedef std::wios::traits_type ctraits_type;
46  ctraits_type::int_type i1, i2;
47
48  state1 = is_01.rdstate();
49  i1 = ctraits_type::length(array1);
50  is_01 >> array1;   // should snake 0 characters, not alter stream state
51  i2 = ctraits_type::length(array1);
52  state2 = is_01.rdstate();
53  VERIFY( i1 == i2 );
54  VERIFY( state1 != state2 );
55  VERIFY( static_cast<bool>(state2 & statefail) );
56
57  state1 = is_02.rdstate();
58  is_02 >> array1;   // should snake L"coltrane"
59  state2 = is_02.rdstate();
60  VERIFY( state1 == state2 );
61  VERIFY( !static_cast<bool>(state2 & statefail) );
62  VERIFY( array1[str_03.size() - 1] == L'e' );
63  array1[str_03.size()] = L'\0';
64  VERIFY( !str_03.compare(0, str_03.size(), array1) );
65  std::wistream::int_type int1 = is_02.peek(); // should be L' '
66  VERIFY( int1 == L' ' );
67
68  state1 = is_02.rdstate();
69  is_02 >> array1;   // should snake L"playing" as sentry "eats" ws
70  state2 = is_02.rdstate();
71  int1 = is_02.peek(); // should be L' '
72  VERIFY( int1 == L' ' );
73  VERIFY( state1 == state2 );
74  VERIFY( !static_cast<bool>(state2 & statefail) );
75}
76
77int main()
78{
79  test01();
80  return 0;
81}
82