1// Copyright (C) 2004, 2005, 2006, 2007, 2009 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 3, 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 COPYING3.  If not see
16// <http://www.gnu.org/licenses/>.
17
18// 21.3.7.9 inserters and extractors
19
20// { dg-require-fileio "" }
21
22#include <istream>
23#include <string>
24#include <fstream>
25#include <cstdlib>
26#include <testsuite_hooks.h>
27
28using namespace std;
29
30string prepare(string::size_type len, unsigned nchunks)
31{
32  string ret;
33  for (unsigned i = 0; i < nchunks; ++i)
34    {
35      for (string::size_type j = 0; j < len; ++j)
36	ret.push_back('a' + rand() % 26);
37      len *= 2;
38      ret.push_back(' ');
39    }
40  return ret;
41}
42
43void check(istream& stream, const string& str, unsigned nchunks)
44{
45  bool test __attribute__((unused)) = true;
46
47  string chunk;
48  string::size_type index = 0, index_new = 0;
49  unsigned n = 0;
50
51  while (stream >> chunk)
52    {
53      index_new = str.find(' ', index);
54      VERIFY( !str.compare(index, index_new - index, chunk) );
55      index = index_new + 1;
56      ++n;
57    }
58  VERIFY( stream.eof() );
59  VERIFY( n == nchunks );
60}
61
62// istream& operator>>(istream&, string&)
63void test01()
64{
65  const char filename[] = "inserters_extractors-3.txt";
66
67  const unsigned nchunks = 10;
68  const string data = prepare(666, nchunks);
69
70  ofstream ofstrm;
71  ofstrm.open(filename);
72  ofstrm.write(data.data(), data.size());
73  ofstrm.close();
74
75  ifstream ifstrm;
76  ifstrm.open(filename);
77  check(ifstrm, data, nchunks);
78  ifstrm.close();
79}
80
81int main()
82{
83  test01();
84  return 0;
85}
86