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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(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(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(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 | } |