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/*
* Distributed under the Boost Software License, Version 1.0.(See accompanying
* file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt.)
*
* See http://www.boost.org/libs/iostreams for documentation.
* File: libs/iostreams/test/stream_offset_64bit_test.cpp
* Date: Sun Dec 23 21:11:23 MST 2007
* Copyright: 2007-2008 CodeRage, LLC
* Author: Jonathan Turkanis
* Contact: turkanis at coderage dot com
*
* Tests the functions defined in the header "boost/iostreams/positioning.hpp"
* with large (64-bit) file offsets.
*/
#include <cstdio> // fpos_t
#include <iostream>
#include <sstream>
#include <boost/config.hpp> // BOOST_MSVC
#include <boost/iostreams/detail/ios.hpp>
#include <boost/iostreams/positioning.hpp>
#include <boost/test/test_tools.hpp>
#include <boost/test/unit_test.hpp>
using namespace std;
using namespace boost;
using namespace boost::iostreams;
using boost::unit_test::test_suite;
#ifdef BOOST_MSVC
# pragma warning(disable:4127)
#endif
void stream_offset_64bit_test()
{
stream_offset large_file = (stream_offset) 100 *
(stream_offset) 1024 *
(stream_offset) 1024 *
(stream_offset) 1024;
stream_offset first = -large_file - (-large_file) % 10000000;
stream_offset last = large_file - large_file % 10000000;
for (stream_offset off = first; off < last; off += 10000000)
{
if (off != position_to_offset(offset_to_position(off))) {
cout << "****************************************\n"
<< "* sizeof(fpos_t) = " << sizeof(fpos_t) << "\n"
<< "* sizeof(streamoff) = " << sizeof(streamoff) << "\n"
<< "* sizeof(stream_offset) = "
<< sizeof(stream_offset) << "\n"
<< "****************************************\n";
stringstream s;
s << "off != position_to_offset(offset_to_position(off)) "
"failed for (off >> 32) == 0x"
<< hex
<< static_cast<unsigned int>(off >> 32)
<< " and (off & 0xFFFFFFFF) == 0x"
<< static_cast<unsigned int>(off & 0xFFFFFFFF)
<< std::endl;
BOOST_REQUIRE_MESSAGE(0, s.str().c_str());
}
}
}
void stream_offset_64bit_test2()
{
boost::int64_t val = boost::int64_t(1) << 31;
std::streampos pos = boost::iostreams::offset_to_position(val);
pos -= 2;
BOOST_CHECK_EQUAL(val - 2, boost::iostreams::position_to_offset(pos));
val = -val;
pos = boost::iostreams::offset_to_position(val);
pos += 2;
BOOST_CHECK_EQUAL(val + 2, boost::iostreams::position_to_offset(pos));
}
test_suite* init_unit_test_suite(int, char* [])
{
test_suite* test = BOOST_TEST_SUITE("stream_offset 64-bit test");
test->add(BOOST_TEST_CASE(&stream_offset_64bit_test));
test->add(BOOST_TEST_CASE(&stream_offset_64bit_test2));
return test;
}
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