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fix some of the awful mix of macros

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This commit is contained in:
Nicole Mazzuca 2019-07-22 11:16:07 -07:00
parent 0d8bba52e4
commit 2c20a9d981
1 changed files with 43 additions and 24 deletions
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67
toolsrc/src/vcpkg-test/util.cpp
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@ -5,6 +5,9 @@
#include <vcpkg/base/files.h>
#include <vcpkg/statusparagraph.h>
// used to get the implementation specific compiler flags (i.e., __cpp_lib_filesystem)
#include <ciso646>
#include <iostream>
#include <memory>
@ -12,16 +15,24 @@
#include <windows.h>
#endif
#if defined(_MSC_VER) && _MSC_VER >= 1914
#define FILESYSTEM_SYMLINK_STD 0
#define FILESYSTEM_SYMLINK_UNIX 1
#define FILESYSTEM_SYMLINK_NONE 2
#define USE_STD_FILESYSTEM
#if defined(__cpp_lib_filesystem)
#define FILESYSTEM_SYMLINK FILESYSTEM_SYMLINK_STD
#include <filesystem> // required for filesystem::create_{directory_}symlink
#elif !defined(_MSC_VER)
#define FILESYSTEM_SYMLINK FILESYSTEM_SYMLINK_UNIX
#include <unistd.h>
#else
#define FILESYSTEM_SYMLINK FILESYSTEM_SYMLINK_NONE
#endif
namespace vcpkg::Test
@ -63,15 +74,14 @@ namespace vcpkg::Test
return m_ret.value_or_exit(VCPKG_LINE_INFO);
}
// I am so sorry for this awful mix of macros
static bool system_allows_symlinks() {
static bool system_allows_symlinks()
{
#if defined(_WIN32)
#if !defined(USE_STD_FILESYSTEM)
return false;
#else
if (!__cpp_lib_filesystem)
{
return false;
}
HKEY key;
bool allow_symlinks = true;
@ -87,17 +97,18 @@ namespace vcpkg::Test
if (status == ERROR_SUCCESS) RegCloseKey(key);
return allow_symlinks;
#endif
#else
return true;
#endif
}
static fs::path internal_temporary_directory() {
static fs::path internal_temporary_directory()
{
#if defined(_WIN32)
wchar_t* tmp = static_cast<wchar_t*>(std::calloc(32'767, 2));
if (!GetEnvironmentVariableW(L"TEMP", tmp, 32'767)) {
if (!GetEnvironmentVariableW(L"TEMP", tmp, 32'767))
{
std::cerr << "No temporary directory found.\n";
std::abort();
}
@ -114,9 +125,14 @@ namespace vcpkg::Test
const bool SYMLINKS_ALLOWED = system_allows_symlinks();
const fs::path TEMPORARY_DIRECTORY = internal_temporary_directory();
void create_symlink(const fs::path& target, const fs::path& file, std::error_code& ec) {
#if defined(_MSC_VER)
#if defined(USE_STD_FILESYSTEM)
#if FILESYSTEM_SYMLINK == FILSYSTEM_SYMLINK_NONE
constexpr inline char no_filesystem_message[] =
"<filesystem> doesn't exist; on windows, we don't attempt to use the win32 calls to create symlinks";
#endif
void create_symlink(const fs::path& target, const fs::path& file, std::error_code& ec)
{
#if FILESYSTEM_SYMLINK == FILESYSTEM_SYMLINK_STD
if (SYMLINKS_ALLOWED)
{
std::filesystem::path targetp = target.native();
@ -125,20 +141,22 @@ namespace vcpkg::Test
std::filesystem::create_symlink(targetp, filep);
}
else
#endif
{
vcpkg::Checks::exit_with_message(VCPKG_LINE_INFO, "Symlinks are not allowed on this system");
}
#else
if(symlink(target.c_str(), file.c_str()) != 0) {
#elif FILESYSTEM_SYMLINK == FILESYSTEM_SYMLINK_UNIX
if (symlink(target.c_str(), file.c_str()) != 0)
{
ec.assign(errno, std::system_category());
}
#else
vcpkg::Checks::exit_with_message(VCPKG_LINE_INFO, no_filesystem_message);
#endif
}
void create_directory_symlink(const fs::path& target, const fs::path& file, std::error_code& ec) {
#if defined(_MSC_VER)
#if defined(USE_STD_FILESYSTEM)
void create_directory_symlink(const fs::path& target, const fs::path& file, std::error_code& ec)
{
#if FILESYSTEM_SYMLINK == FILESYSTEM_SYMLINK_STD
if (SYMLINKS_ALLOWED)
{
std::filesystem::path targetp = target.native();
@ -147,12 +165,13 @@ namespace vcpkg::Test
std::filesystem::create_symlink(targetp, filep);
}
else
#endif
{
vcpkg::Checks::exit_with_message(VCPKG_LINE_INFO, "Symlinks are not allowed on this system");
}
#else
#elif FILESYSTEM_SYMLINK == FILESYSTEM_SYMLINK_UNIX
::vcpkg::Test::create_symlink(target, file, ec);
#else
vcpkg::Checks::exit_with_message(VCPKG_LINE_INFO, no_filesystem_message);
#endif
}
}