return make_error_code(errc::success);
}
+error_code create_symlink(const Twine &to, const Twine &from) {
+ // Get arguments.
+ SmallString<128> from_storage;
+ SmallString<128> to_storage;
+ StringRef f = from.toNullTerminatedStringRef(from_storage);
+ StringRef t = to.toNullTerminatedStringRef(to_storage);
+
+ if (::symlink(t.begin(), f.begin()) == -1)
+ return error_code(errno, system_category());
+
+ return make_error_code(errc::success);
+}
+
error_code exists(const Twine &path, bool &result) {
SmallString<128> path_storage;
StringRef p = path.toNullTerminatedStringRef(path_storage);
using namespace llvm;
namespace {
+ typedef BOOLEAN (WINAPI *PtrCreateSymbolicLinkW)(\r
+ /*__in*/ LPCWSTR lpSymlinkFileName,\r
+ /*__in*/ LPCWSTR lpTargetFileName,\r
+ /*__in*/ DWORD dwFlags);\r
+\r
+ PtrCreateSymbolicLinkW create_symbolic_link_api = PtrCreateSymbolicLinkW(\r
+ ::GetProcAddress(::GetModuleHandleA("kernel32.dll"),
+ "CreateSymbolicLinkW"));
+
error_code UTF8ToUTF16(const StringRef &utf8,
SmallVectorImpl<wchar_t> &utf16) {
int len = ::MultiByteToWideChar(CP_UTF8, MB_ERR_INVALID_CHARS,
return make_error_code(errc::success);
}
+error_code create_symlink(const Twine &to, const Twine &from) {
+ // Only do it if the function is available at runtime.
+ if (!create_symbolic_link_api)
+ return make_error_code(errc::function_not_supported);
+
+ // Get arguments.
+ SmallString<128> from_storage;
+ SmallString<128> to_storage;
+ StringRef f = from.toStringRef(from_storage);
+ StringRef t = to.toStringRef(to_storage);
+
+ // Convert to utf-16.
+ SmallVector<wchar_t, 128> wide_from;
+ SmallVector<wchar_t, 128> wide_to;
+ if (error_code ec = UTF8ToUTF16(f, wide_from)) return ec;
+ if (error_code ec = UTF8ToUTF16(t, wide_to)) return ec;
+
+ if (!create_symbolic_link_api(wide_from.begin(), wide_to.begin(), NULL))
+ return make_error_code(windows_error(::GetLastError()));
+
+ return make_error_code(errc::success);
+}
+
error_code exists(const Twine &path, bool &result) {
SmallString<128> path_storage;
SmallVector<wchar_t, 128> path_utf16;