1// 2005-07-22  Paolo Carlini  <pcarlini@suse.de>
2
3// Copyright (C) 2005 Free Software Foundation
4//
5// This file is part of the GNU ISO C++ Library.  This library is free
6// software; you can redistribute it and/or modify it under the
7// terms of the GNU General Public License as published by the
8// Free Software Foundation; either version 2, or (at your option)
9// any later version.
10
11// This library is distributed in the hope that it will be useful,
12// but WITHOUT ANY WARRANTY; without even the implied warranty of
13// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14// GNU General Public License for more details.
15
16// You should have received a copy of the GNU General Public License along
17// with this library; see the file COPYING.  If not, write to the Free
18// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
19// USA.
20
21// 27.6.1.2.3 basic_istream::operator>>
22
23#include <istream>
24#include <string>
25#include <fstream>
26#include <testsuite_hooks.h>
27
28using namespace std;
29
30wstring prepare(wstring::size_type len, unsigned nchunks)
31{
32  wstring ret;
33  for (unsigned i = 0; i < nchunks; ++i)
34    {
35      for (wstring::size_type j = 0; j < len; ++j)
36	ret.push_back(L'a' + rand() % 26);
37      len *= 2;
38      ret.push_back(L' ');
39    }
40  return ret;
41}
42
43void check(wistream& stream, const wstring& str, unsigned nchunks)
44{
45  bool test __attribute__((unused)) = true;
46
47  wchar_t* chunk = new wchar_t[str.size()];
48  wmemset(chunk, L'X', str.size());
49
50  wstring::size_type index = 0, index_new = 0;
51  unsigned n = 0;
52
53  while (stream >> chunk)
54    {
55      index_new = str.find(' ', index);
56      VERIFY( !str.compare(index, index_new - index, chunk) );
57      index = index_new + 1;
58      ++n;
59      wmemset(chunk, L'X', str.size());
60    }
61  VERIFY( stream.eof() );
62  VERIFY( n == nchunks );
63
64  delete[] chunk;
65}
66
67// istream& operator>>(istream&, charT*)
68void test01()
69{
70  const char filename[] = "inserters_extractors-4.txt";
71
72  const unsigned nchunks = 10;
73  const wstring data = prepare(666, nchunks);
74
75  wofstream ofstrm;
76  ofstrm.open(filename);
77  ofstrm.write(data.data(), data.size());
78  ofstrm.close();
79
80  wifstream ifstrm;
81  ifstrm.open(filename);
82  check(ifstrm, data, nchunks);
83  ifstrm.close();
84}
85
86int main()
87{
88  test01();
89  return 0;
90}
91