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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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