1// Copyright (C) 2004 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// 21.3.7.9 inserters and extractors
20
21#include <istream>
22#include <string>
23#include <fstream>
24#include <testsuite_hooks.h>
25
26using namespace std;
27
28wstring prepare(wstring::size_type len, unsigned nchunks)
29{
30  wstring ret;
31  for (unsigned i = 0; i < nchunks; ++i)
32    {
33      for (wstring::size_type j = 0; j < len; ++j)
34	ret.push_back(L'a' + rand() % 26);
35      len *= 2;
36      ret.push_back(L' ');
37    }
38  return ret;
39}
40
41void check(wistream& stream, const wstring& str, unsigned nchunks)
42{
43  bool test __attribute__((unused)) = true;
44
45  wstring chunk;
46  wstring::size_type index = 0, index_new = 0;
47  unsigned n = 0;
48
49  while (stream >> chunk)
50    {
51      index_new = str.find(L' ', index);
52      VERIFY( !str.compare(index, index_new - index, chunk) );
53      index = index_new + 1;
54      ++n;
55    }
56  VERIFY( stream.eof() );
57  VERIFY( n == nchunks );
58}
59
60// istream& operator>>(istream&, string&)
61void test01()
62{
63  const char filename[] = "inserters_extractors-3.txt";
64
65  const unsigned nchunks = 10;
66  const wstring data = prepare(666, nchunks);
67
68  wofstream ofstrm;
69  ofstrm.open(filename);
70  ofstrm.write(data.data(), data.size());
71  ofstrm.close();
72
73  wifstream ifstrm;
74  ifstrm.open(filename);
75  check(ifstrm, data, nchunks);
76  ifstrm.close();
77}
78
79int main()
80{
81  test01();
82  return 0;
83}
84