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#include <catch2/catch.hpp>
#include <vcpkg/base/files.h>
#include <vcpkg/base/strings.h>
#include <iostream>
#include <random>
#include <vector>
#include <vcpkg-test/util.h>
using vcpkg::Test::AllowSymlinks;
using vcpkg::Test::base_temporary_directory;
using vcpkg::Test::can_create_symlinks;
#define CHECK_EC_ON_FILE(file, ec) \
do \
{ \
if (ec) \
{ \
FAIL(file << ": " << ec.message()); \
} \
} while (0)
namespace
{
using uid_t = std::uniform_int_distribution<std::uint64_t>;
using urbg_t = std::mt19937_64;
urbg_t get_urbg(std::uint64_t index)
{
// smallest prime > 2**63 - 1
return urbg_t{index + 9223372036854775837ULL};
}
std::string get_random_filename(urbg_t& urbg) { return vcpkg::Strings::b32_encode(uid_t{}(urbg)); }
struct MaxDepth
{
std::uint64_t i;
explicit MaxDepth(std::uint64_t i) : i(i) { }
operator uint64_t() const { return i; }
};
struct Width
{
std::uint64_t i;
explicit Width(std::uint64_t i) : i(i) { }
operator uint64_t() const { return i; }
};
struct CurrentDepth
{
std::uint64_t i;
explicit CurrentDepth(std::uint64_t i) : i(i) { }
operator uint64_t() const { return i; }
CurrentDepth incremented() const { return CurrentDepth{i + 1}; }
};
void create_directory_tree(urbg_t& urbg,
vcpkg::Files::Filesystem& fs,
const fs::path& base,
MaxDepth max_depth,
AllowSymlinks allow_symlinks = AllowSymlinks::Yes,
Width width = Width{5},
CurrentDepth current_depth = CurrentDepth{0})
{
// we want ~70% of our "files" to be directories, and then a third
// each of the remaining ~30% to be regular files, directory symlinks,
// and regular symlinks
constexpr std::uint64_t directory_min_tag = 0;
constexpr std::uint64_t directory_max_tag = 6;
constexpr std::uint64_t regular_file_tag = 7;
constexpr std::uint64_t regular_symlink_tag = 8;
constexpr std::uint64_t directory_symlink_tag = 9;
allow_symlinks = AllowSymlinks{allow_symlinks && can_create_symlinks()};
// if we're at the max depth, we only want to build non-directories
std::uint64_t file_type;
if (current_depth >= max_depth)
{
file_type = uid_t{regular_file_tag, directory_symlink_tag}(urbg);
}
else if (current_depth < 2)
{
file_type = directory_min_tag;
}
else
{
file_type = uid_t{directory_min_tag, regular_symlink_tag}(urbg);
}
if (!allow_symlinks && file_type > regular_file_tag)
{
file_type = regular_file_tag;
}
std::error_code ec;
if (file_type <= directory_max_tag)
{
fs.create_directory(base, ec);
if (ec)
{
CHECK_EC_ON_FILE(base, ec);
}
for (std::uint64_t i = 0; i < width; ++i)
{
create_directory_tree(urbg,
fs,
base / get_random_filename(urbg),
max_depth,
allow_symlinks,
width,
current_depth.incremented());
}
}
else if (file_type == regular_file_tag)
{
// regular file
fs.write_contents(base, "", ec);
}
else if (file_type == regular_symlink_tag)
{
// regular symlink
auto base_link = base;
base_link.replace_filename(fs::u8string(base.filename()) + "-orig");
fs.write_contents(base_link, "", ec);
CHECK_EC_ON_FILE(base_link, ec);
vcpkg::Test::create_symlink(base_link, base, ec);
}
else // file_type == directory_symlink_tag
{
// directory symlink
auto parent = base;
parent.remove_filename();
vcpkg::Test::create_directory_symlink(parent, base, ec);
}
CHECK_EC_ON_FILE(base, ec);
REQUIRE(fs::exists(fs.symlink_status(base, ec)));
CHECK_EC_ON_FILE(base, ec);
}
vcpkg::Files::Filesystem& setup()
{
auto& fs = vcpkg::Files::get_real_filesystem();
std::error_code ec;
fs.create_directory(base_temporary_directory(), ec);
CHECK_EC_ON_FILE(base_temporary_directory(), ec);
return fs;
}
}
TEST_CASE ("fs::combine works correctly", "[filesystem][files]")
{
using namespace fs;
using namespace vcpkg::Files;
CHECK(combine(u8path("/a/b"), u8path("c/d")) == u8path("/a/b/c/d"));
CHECK(combine(u8path("a/b"), u8path("c/d")) == u8path("a/b/c/d"));
CHECK(combine(u8path("/a/b"), u8path("/c/d")) == u8path("/c/d"));
#if defined(_WIN32)
CHECK(combine(u8path("C:/a/b"), u8path("c/d")) == u8path("C:/a/b/c/d"));
CHECK(combine(u8path("C:a/b"), u8path("c/d")) == u8path("C:a/b/c/d"));
CHECK(combine(u8path("C:a/b"), u8path("/c/d")) == u8path("C:/c/d"));
CHECK(combine(u8path("C:/a/b"), u8path("/c/d")) == u8path("C:/c/d"));
CHECK(combine(u8path("C:/a/b"), u8path("D:/c/d")) == u8path("D:/c/d"));
CHECK(combine(u8path("C:/a/b"), u8path("D:c/d")) == u8path("D:c/d"));
CHECK(combine(u8path("C:/a/b"), u8path("C:c/d")) == u8path("C:/a/b/c/d"));
#endif
}
TEST_CASE ("remove all", "[files]")
{
auto urbg = get_urbg(0);
auto& fs = setup();
fs::path temp_dir = base_temporary_directory() / get_random_filename(urbg);
INFO("temp dir is: " << temp_dir);
create_directory_tree(urbg, fs, temp_dir, MaxDepth{5});
std::error_code ec;
fs::path fp;
fs.remove_all(temp_dir, ec, fp);
CHECK_EC_ON_FILE(fp, ec);
REQUIRE_FALSE(fs.exists(temp_dir, ec));
CHECK_EC_ON_FILE(temp_dir, ec);
}
#if defined(_WIN32)
TEST_CASE ("win32_fix_path_case", "[files]")
{
using vcpkg::Files::win32_fix_path_case;
// This test assumes that the Windows directory is C:\Windows
CHECK(win32_fix_path_case(L"") == L"");
CHECK(win32_fix_path_case(L"C:") == L"C:");
CHECK(win32_fix_path_case(L"c:") == L"C:");
CHECK(win32_fix_path_case(L"C:/") == L"C:\\");
CHECK(win32_fix_path_case(L"C:\\") == L"C:\\");
CHECK(win32_fix_path_case(L"c:\\") == L"C:\\");
CHECK(win32_fix_path_case(L"C:\\WiNdOws") == L"C:\\Windows");
CHECK(win32_fix_path_case(L"c:\\WiNdOws\\") == L"C:\\Windows\\");
CHECK(win32_fix_path_case(L"C://///////WiNdOws") == L"C:\\Windows");
CHECK(win32_fix_path_case(L"c:\\/\\/WiNdOws\\/") == L"C:\\Windows\\");
auto& fs = vcpkg::Files::get_real_filesystem();
auto original_cwd = fs.current_path(VCPKG_LINE_INFO);
fs.current_path(L"C:\\", VCPKG_LINE_INFO);
CHECK(win32_fix_path_case(L"\\") == L"\\");
CHECK(win32_fix_path_case(L"\\/\\WiNdOws") == L"\\Windows");
CHECK(win32_fix_path_case(L"\\WiNdOws") == L"\\Windows");
CHECK(win32_fix_path_case(L"\\WiNdOws") == L"\\Windows");
CHECK(win32_fix_path_case(L"c:WiNdOws") == L"C:Windows");
CHECK(win32_fix_path_case(L"c:WiNdOws/system32") == L"C:Windows\\System32");
fs.current_path(original_cwd, VCPKG_LINE_INFO);
fs.create_directories("SuB/Dir/Ectory", VCPKG_LINE_INFO);
CHECK(win32_fix_path_case(L"sub") == L"SuB");
CHECK(win32_fix_path_case(L"SUB") == L"SuB");
CHECK(win32_fix_path_case(L"sub/") == L"SuB\\");
CHECK(win32_fix_path_case(L"sub/dir") == L"SuB\\Dir");
CHECK(win32_fix_path_case(L"sub/dir/") == L"SuB\\Dir\\");
CHECK(win32_fix_path_case(L"sub/dir/ectory") == L"SuB\\Dir\\Ectory");
CHECK(win32_fix_path_case(L"sub/dir/ectory/") == L"SuB\\Dir\\Ectory\\");
fs.remove_all("SuB", VCPKG_LINE_INFO);
CHECK(win32_fix_path_case(L"//nonexistent_server\\nonexistent_share\\") ==
L"\\\\nonexistent_server\\nonexistent_share\\");
CHECK(win32_fix_path_case(L"\\\\nonexistent_server\\nonexistent_share\\") ==
L"\\\\nonexistent_server\\nonexistent_share\\");
CHECK(win32_fix_path_case(L"\\\\nonexistent_server\\nonexistent_share") ==
L"\\\\nonexistent_server\\nonexistent_share");
CHECK(win32_fix_path_case(L"///three_slashes_not_a_server\\subdir\\") == L"\\three_slashes_not_a_server\\subdir\\");
CHECK(win32_fix_path_case(L"\\??\\c:\\WiNdOws") == L"\\??\\c:\\WiNdOws");
CHECK(win32_fix_path_case(L"\\\\?\\c:\\WiNdOws") == L"\\\\?\\c:\\WiNdOws");
CHECK(win32_fix_path_case(L"\\\\.\\c:\\WiNdOws") == L"\\\\.\\c:\\WiNdOws");
CHECK(win32_fix_path_case(L"c:\\/\\/Nonexistent\\/path/here") == L"C:\\Nonexistent\\path\\here");
}
#endif // _WIN32
#if defined(CATCH_CONFIG_ENABLE_BENCHMARKING)
TEST_CASE ("remove all -- benchmarks", "[files][!benchmark]")
{
auto urbg = get_urbg(1);
auto& fs = setup();
struct
{
urbg_t& urbg;
vcpkg::Files::Filesystem& fs;
void operator()(Catch::Benchmark::Chronometer& meter, MaxDepth max_depth, AllowSymlinks allow_symlinks) const
{
std::vector<fs::path> temp_dirs;
temp_dirs.resize(meter.runs());
std::generate(begin(temp_dirs), end(temp_dirs), [&] {
fs::path temp_dir = base_temporary_directory() / get_random_filename(urbg);
create_directory_tree(urbg, fs, temp_dir, max_depth, allow_symlinks);
return temp_dir;
});
meter.measure([&](int run) {
std::error_code ec;
fs::path fp;
const auto& temp_dir = temp_dirs[run];
fs.remove_all(temp_dir, ec, fp);
CHECK_EC_ON_FILE(fp, ec);
});
for (const auto& dir : temp_dirs)
{
std::error_code ec;
REQUIRE_FALSE(fs.exists(dir, ec));
CHECK_EC_ON_FILE(dir, ec);
}
}
} do_benchmark = {urbg, fs};
BENCHMARK_ADVANCED("small directory, no symlinks")(Catch::Benchmark::Chronometer meter)
{
do_benchmark(meter, MaxDepth{2}, AllowSymlinks::No);
};
BENCHMARK_ADVANCED("large directory, no symlinks")(Catch::Benchmark::Chronometer meter)
{
do_benchmark(meter, MaxDepth{5}, AllowSymlinks::No);
};
if (can_create_symlinks())
{
BENCHMARK_ADVANCED("small directory, symlinks")(Catch::Benchmark::Chronometer meter)
{
do_benchmark(meter, MaxDepth{2}, AllowSymlinks::Yes);
};
BENCHMARK_ADVANCED("large directory, symlinks")(Catch::Benchmark::Chronometer meter)
{
do_benchmark(meter, MaxDepth{5}, AllowSymlinks::Yes);
};
}
}
#endif
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