| /* |
| * 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; |
| } |