1 | /* |
---|---|
2 | * Distributed under the Boost Software License, Version 1.0.(See accompanying |
3 | * file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt.) |
4 | * |
5 | * See http://www.boost.org/libs/iostreams for documentation. |
6 | |
7 | * File: libs/iostreams/test/stream_offset_64bit_test.cpp |
8 | * Date: Sun Dec 23 21:11:23 MST 2007 |
9 | * Copyright: 2007-2008 CodeRage, LLC |
10 | * Author: Jonathan Turkanis |
11 | * Contact: turkanis at coderage dot com |
12 | * |
13 | * Tests the functions defined in the header "boost/iostreams/positioning.hpp" |
14 | * with large (64-bit) file offsets. |
15 | */ |
16 | |
17 | #include <cstdio> // fpos_t |
18 | #include <iostream> |
19 | #include <sstream> |
20 | #include <boost/config.hpp> // BOOST_MSVC |
21 | #include <boost/iostreams/detail/ios.hpp> |
22 | #include <boost/iostreams/positioning.hpp> |
23 | #include <boost/test/test_tools.hpp> |
24 | #include <boost/test/unit_test.hpp> |
25 | |
26 | using namespace std; |
27 | using namespace boost; |
28 | using namespace boost::iostreams; |
29 | using boost::unit_test::test_suite; |
30 | |
31 | #ifdef BOOST_MSVC |
32 | # pragma warning(disable:4127) |
33 | #endif |
34 | |
35 | void stream_offset_64bit_test() |
36 | { |
37 | stream_offset large_file = (stream_offset) 100 * |
38 | (stream_offset) 1024 * |
39 | (stream_offset) 1024 * |
40 | (stream_offset) 1024; |
41 | stream_offset first = -large_file - (-large_file) % 10000000; |
42 | stream_offset last = large_file - large_file % 10000000; |
43 | |
44 | for (stream_offset off = first; off < last; off += 10000000) |
45 | { |
46 | if (off != position_to_offset(pos: offset_to_position(off))) { |
47 | cout << "****************************************\n" |
48 | << "* sizeof(fpos_t) = "<< sizeof(fpos_t) << "\n" |
49 | << "* sizeof(streamoff) = "<< sizeof(streamoff) << "\n" |
50 | << "* sizeof(stream_offset) = " |
51 | << sizeof(stream_offset) << "\n" |
52 | << "****************************************\n"; |
53 | stringstream s; |
54 | s << "off != position_to_offset(offset_to_position(off)) " |
55 | "failed for (off >> 32) == 0x" |
56 | << hex |
57 | << static_cast<unsigned int>(off >> 32) |
58 | << " and (off & 0xFFFFFFFF) == 0x" |
59 | << static_cast<unsigned int>(off & 0xFFFFFFFF) |
60 | << std::endl; |
61 | BOOST_REQUIRE_MESSAGE(0, s.str().c_str()); |
62 | } |
63 | } |
64 | } |
65 | |
66 | void stream_offset_64bit_test2() |
67 | { |
68 | boost::int64_t val = boost::int64_t(1) << 31; |
69 | std::streampos pos = boost::iostreams::offset_to_position(off: val); |
70 | pos -= 2; |
71 | BOOST_CHECK_EQUAL(val - 2, boost::iostreams::position_to_offset(pos)); |
72 | |
73 | val = -val; |
74 | pos = boost::iostreams::offset_to_position(off: val); |
75 | pos += 2; |
76 | BOOST_CHECK_EQUAL(val + 2, boost::iostreams::position_to_offset(pos)); |
77 | } |
78 | |
79 | test_suite* init_unit_test_suite(int, char* []) |
80 | { |
81 | test_suite* test = BOOST_TEST_SUITE("stream_offset 64-bit test"); |
82 | test->add(BOOST_TEST_CASE(&stream_offset_64bit_test)); |
83 | test->add(BOOST_TEST_CASE(&stream_offset_64bit_test2)); |
84 | return test; |
85 | } |
86 |