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// Copyright (C) 2017-2018 Free Software Foundation, Inc.
//
// 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 3, 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 COPYING3. If not see
// <http://www.gnu.org/licenses/>.
// { dg-require-fileio "" }
#include <iterator>
#include <fstream>
#include <algorithm>
#include <testsuite_hooks.h>
void test01()
{
using namespace std;
typedef istreambuf_iterator<char> in_iterator_type;
unsigned found = 0;
{
ifstream fbuf("istream_unformatted-1.txt");
in_iterator_type beg(fbuf);
in_iterator_type end;
for (;;)
{
beg = find(beg, end, '1');
if (beg == end)
break;
++found;
VERIFY( *beg == '1' );
advance(beg, 9);
VERIFY( *beg == '0' );
}
}
{
ifstream fbuf("istream_unformatted-1.txt");
in_iterator_type beg(fbuf);
in_iterator_type end;
beg = find(beg, end, '1');
VERIFY( beg != end );
VERIFY( *beg == '1' );
advance(beg, 9);
VERIFY( *beg == '0' );
unsigned line_length = 10;
while (*++beg != '1')
++line_length;
// Try to jump directly to the end through advance.
advance(beg, (found - 2) * line_length + 9);
VERIFY( *beg == '0' );
VERIFY( find(beg, end, '1') == end );
}
}
int main()
{
test01();
return 0;
}
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