using llvm::sys::windows::UTF8ToUTF16;
using llvm::sys::windows::UTF16ToUTF8;
-
-static std::error_code windows_error(DWORD E) {
- return mapWindowsError(E);
-}
+using llvm::sys::path::widenPath;
static bool is_separator(const wchar_t value) {
switch (value) {
namespace llvm {
namespace sys {
+namespace path {
+
+// Convert a UTF-8 path to UTF-16. Also, if the absolute equivalent of the
+// path is longer than CreateDirectory can tolerate, make it absolute and
+// prefixed by '\\?\'.
+std::error_code widenPath(const Twine &Path8,
+ SmallVectorImpl<wchar_t> &Path16) {
+ const size_t MaxDirLen = MAX_PATH - 12; // Must leave room for 8.3 filename.
+
+ // Several operations would convert Path8 to SmallString; more efficient to
+ // do it once up front.
+ SmallString<128> Path8Str;
+ Path8.toVector(Path8Str);
+
+ // If we made this path absolute, how much longer would it get?
+ size_t CurPathLen;
+ if (llvm::sys::path::is_absolute(Twine(Path8Str)))
+ CurPathLen = 0; // No contribution from current_path needed.
+ else {
+ CurPathLen = ::GetCurrentDirectoryW(0, NULL);
+ if (CurPathLen == 0)
+ return mapWindowsError(::GetLastError());
+ }
+
+ // Would the absolute path be longer than our limit?
+ if ((Path8Str.size() + CurPathLen) >= MaxDirLen &&
+ !Path8Str.startswith("\\\\?\\")) {
+ SmallString<2*MAX_PATH> FullPath("\\\\?\\");
+ if (CurPathLen) {
+ SmallString<80> CurPath;
+ if (std::error_code EC = llvm::sys::fs::current_path(CurPath))
+ return EC;
+ FullPath.append(CurPath);
+ }
+ // Traverse the requested path, canonicalizing . and .. as we go (because
+ // the \\?\ prefix is documented to treat them as real components).
+ // The iterators don't report separators and append() always attaches
+ // preferred_separator so we don't need to call native() on the result.
+ for (llvm::sys::path::const_iterator I = llvm::sys::path::begin(Path8Str),
+ E = llvm::sys::path::end(Path8Str);
+ I != E; ++I) {
+ if (I->size() == 1 && *I == ".")
+ continue;
+ if (I->size() == 2 && *I == "..")
+ llvm::sys::path::remove_filename(FullPath);
+ else
+ llvm::sys::path::append(FullPath, *I);
+ }
+ return UTF8ToUTF16(FullPath, Path16);
+ }
+
+ // Just use the caller's original path.
+ return UTF8ToUTF16(Path8Str, Path16);
+}
+} // end namespace path
+
namespace fs {
std::string getMainExecutable(const char *argv0, void *MainExecAddr) {
// A zero return value indicates a failure other than insufficient space.
if (len == 0)
- return windows_error(::GetLastError());
+ return mapWindowsError(::GetLastError());
// If there's insufficient space, the len returned is larger than the len
// given.
return UTF16ToUTF8(cur_path.begin(), cur_path.size(), result);
}
-std::error_code create_directory(const Twine &path, bool IgnoreExisting) {
- SmallString<128> path_storage;
+std::error_code create_directory(const Twine &path, bool IgnoreExisting,
+ perms Perms) {
SmallVector<wchar_t, 128> path_utf16;
- if (std::error_code ec =
- UTF8ToUTF16(path.toStringRef(path_storage), path_utf16))
+ if (std::error_code ec = widenPath(path, path_utf16))
return ec;
if (!::CreateDirectoryW(path_utf16.begin(), NULL)) {
DWORD LastError = ::GetLastError();
if (LastError != ERROR_ALREADY_EXISTS || !IgnoreExisting)
- return windows_error(LastError);
+ return mapWindowsError(LastError);
}
return std::error_code();
// We can't use symbolic links for windows.
std::error_code create_link(const Twine &to, const Twine &from) {
- // 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 (std::error_code ec = UTF8ToUTF16(f, wide_from))
+ if (std::error_code ec = widenPath(from, wide_from))
return ec;
- if (std::error_code ec = UTF8ToUTF16(t, wide_to))
+ if (std::error_code ec = widenPath(to, wide_to))
return ec;
if (!::CreateHardLinkW(wide_from.begin(), wide_to.begin(), NULL))
- return windows_error(::GetLastError());
+ return mapWindowsError(::GetLastError());
return std::error_code();
}
std::error_code remove(const Twine &path, bool IgnoreNonExisting) {
- SmallString<128> path_storage;
SmallVector<wchar_t, 128> path_utf16;
file_status ST;
return std::error_code();
}
- if (std::error_code ec =
- UTF8ToUTF16(path.toStringRef(path_storage), path_utf16))
+ if (std::error_code ec = widenPath(path, path_utf16))
return ec;
if (ST.type() == file_type::directory_file) {
if (!::RemoveDirectoryW(c_str(path_utf16))) {
- std::error_code EC = windows_error(::GetLastError());
+ std::error_code EC = mapWindowsError(::GetLastError());
if (EC != errc::no_such_file_or_directory || !IgnoreNonExisting)
return EC;
}
return std::error_code();
}
if (!::DeleteFileW(c_str(path_utf16))) {
- std::error_code EC = windows_error(::GetLastError());
+ std::error_code EC = mapWindowsError(::GetLastError());
if (EC != errc::no_such_file_or_directory || !IgnoreNonExisting)
return EC;
}
}
std::error_code rename(const Twine &from, const Twine &to) {
- // 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 (std::error_code ec = UTF8ToUTF16(f, wide_from))
+ if (std::error_code ec = widenPath(from, wide_from))
return ec;
- if (std::error_code ec = UTF8ToUTF16(t, wide_to))
+ if (std::error_code ec = widenPath(to, wide_to))
return ec;
std::error_code ec = std::error_code();
+
+ // Retry while we see ERROR_ACCESS_DENIED.
+ // System scanners (eg. indexer) might open the source file when it is written
+ // and closed.
+
for (int i = 0; i < 2000; i++) {
+ // Try ReplaceFile first, as it is able to associate a new data stream with
+ // the destination even if the destination file is currently open.
+ if (::ReplaceFileW(wide_to.begin(), wide_from.begin(), NULL, 0, NULL, NULL))
+ return std::error_code();
+
+ // We get ERROR_FILE_NOT_FOUND if the destination file is missing.
+ // MoveFileEx can handle this case.
+ DWORD ReplaceError = ::GetLastError();
+ ec = mapWindowsError(ReplaceError);
+ if (ReplaceError != ERROR_ACCESS_DENIED &&
+ ReplaceError != ERROR_FILE_NOT_FOUND &&
+ ReplaceError != ERROR_SHARING_VIOLATION)
+ break;
+
if (::MoveFileExW(wide_from.begin(), wide_to.begin(),
MOVEFILE_COPY_ALLOWED | MOVEFILE_REPLACE_EXISTING))
return std::error_code();
- DWORD LastError = ::GetLastError();
- if (LastError != ERROR_ACCESS_DENIED)
- break;
- // Retry MoveFile() at ACCESS_DENIED.
- // System scanners (eg. indexer) might open the source file when
- // It is written and closed.
+
+ DWORD MoveError = ::GetLastError();
+ ec = mapWindowsError(MoveError);
+ if (MoveError != ERROR_ACCESS_DENIED) break;
+
::Sleep(1);
}
return ec;
}
-std::error_code resize_file(const Twine &path, uint64_t size) {
- SmallString<128> path_storage;
- SmallVector<wchar_t, 128> path_utf16;
-
- if (std::error_code ec =
- UTF8ToUTF16(path.toStringRef(path_storage), path_utf16))
- return ec;
-
- int fd = ::_wopen(path_utf16.begin(), O_BINARY | _O_RDWR, S_IWRITE);
- if (fd == -1)
- return std::error_code(errno, std::generic_category());
+std::error_code resize_file(int FD, uint64_t Size) {
#ifdef HAVE__CHSIZE_S
- errno_t error = ::_chsize_s(fd, size);
+ errno_t error = ::_chsize_s(FD, Size);
#else
- errno_t error = ::_chsize(fd, size);
+ errno_t error = ::_chsize(FD, Size);
#endif
- ::close(fd);
return std::error_code(error, std::generic_category());
}
-std::error_code exists(const Twine &path, bool &result) {
- SmallString<128> path_storage;
- SmallVector<wchar_t, 128> path_utf16;
+std::error_code access(const Twine &Path, AccessMode Mode) {
+ SmallVector<wchar_t, 128> PathUtf16;
- if (std::error_code ec =
- UTF8ToUTF16(path.toStringRef(path_storage), path_utf16))
- return ec;
+ if (std::error_code EC = widenPath(Path, PathUtf16))
+ return EC;
- DWORD attributes = ::GetFileAttributesW(path_utf16.begin());
+ DWORD Attributes = ::GetFileAttributesW(PathUtf16.begin());
- if (attributes == INVALID_FILE_ATTRIBUTES) {
+ if (Attributes == INVALID_FILE_ATTRIBUTES) {
// See if the file didn't actually exist.
DWORD LastError = ::GetLastError();
if (LastError != ERROR_FILE_NOT_FOUND &&
LastError != ERROR_PATH_NOT_FOUND)
- return windows_error(LastError);
- result = false;
- } else
- result = true;
- return std::error_code();
-}
+ return mapWindowsError(LastError);
+ return errc::no_such_file_or_directory;
+ }
-bool can_write(const Twine &Path) {
- // FIXME: take security attributes into account.
- SmallString<128> PathStorage;
- SmallVector<wchar_t, 128> PathUtf16;
+ if (Mode == AccessMode::Write && (Attributes & FILE_ATTRIBUTE_READONLY))
+ return errc::permission_denied;
- if (UTF8ToUTF16(Path.toStringRef(PathStorage), PathUtf16))
- return false;
-
- DWORD Attr = ::GetFileAttributesW(PathUtf16.begin());
- return (Attr != INVALID_FILE_ATTRIBUTES) && !(Attr & FILE_ATTRIBUTE_READONLY);
+ return std::error_code();
}
bool can_execute(const Twine &Path) {
- SmallString<128> PathStorage;
- SmallVector<wchar_t, 128> PathUtf16;
-
- if (UTF8ToUTF16(Path.toStringRef(PathStorage), PathUtf16))
- return false;
-
- DWORD Attr = ::GetFileAttributesW(PathUtf16.begin());
- return Attr != INVALID_FILE_ATTRIBUTES;
+ return !access(Path, AccessMode::Execute) ||
+ !access(Path + ".exe", AccessMode::Execute);
}
bool equivalent(file_status A, file_status B) {
static bool isReservedName(StringRef path) {
// This list of reserved names comes from MSDN, at:
// http://msdn.microsoft.com/en-us/library/aa365247%28v=vs.85%29.aspx
- static const char *sReservedNames[] = { "nul", "con", "prn", "aux",
- "com1", "com2", "com3", "com4", "com5", "com6",
- "com7", "com8", "com9", "lpt1", "lpt2", "lpt3",
- "lpt4", "lpt5", "lpt6", "lpt7", "lpt8", "lpt9" };
+ static const char *const sReservedNames[] = { "nul", "con", "prn", "aux",
+ "com1", "com2", "com3", "com4",
+ "com5", "com6", "com7", "com8",
+ "com9", "lpt1", "lpt2", "lpt3",
+ "lpt4", "lpt5", "lpt6", "lpt7",
+ "lpt8", "lpt9" };
// First, check to see if this is a device namespace, which always
// starts with \\.\, since device namespaces are not legal file paths.
case FILE_TYPE_UNKNOWN: {
DWORD Err = ::GetLastError();
if (Err != NO_ERROR)
- return windows_error(Err);
+ return mapWindowsError(Err);
Result = file_status(file_type::type_unknown);
return std::error_code();
}
Result = file_status(file_type::type_unknown);
else
Result = file_status(file_type::status_error);
- return windows_error(LastError);
+ return mapWindowsError(LastError);
}
std::error_code status(const Twine &path, file_status &result) {
return std::error_code();
}
- if (std::error_code ec = UTF8ToUTF16(path8, path_utf16))
+ if (std::error_code ec = widenPath(path8, path_utf16))
return ec;
DWORD attr = ::GetFileAttributesW(path_utf16.begin());
FT.dwHighDateTime = UI.HighPart;
HANDLE FileHandle = reinterpret_cast<HANDLE>(_get_osfhandle(FD));
if (!SetFileTime(FileHandle, NULL, &FT, &FT))
- return windows_error(::GetLastError());
+ return mapWindowsError(::GetLastError());
return std::error_code();
}
-std::error_code mapped_file_region::init(int FD, bool CloseFD, uint64_t Offset) {
- FileDescriptor = FD;
+std::error_code mapped_file_region::init(int FD, uint64_t Offset,
+ mapmode Mode) {
// Make sure that the requested size fits within SIZE_T.
- if (Size > std::numeric_limits<SIZE_T>::max()) {
- if (FileDescriptor) {
- if (CloseFD)
- _close(FileDescriptor);
- } else
- ::CloseHandle(FileHandle);
+ if (Size > std::numeric_limits<SIZE_T>::max())
return make_error_code(errc::invalid_argument);
- }
+
+ HANDLE FileHandle = reinterpret_cast<HANDLE>(_get_osfhandle(FD));
+ if (FileHandle == INVALID_HANDLE_VALUE)
+ return make_error_code(errc::bad_file_descriptor);
DWORD flprotect;
switch (Mode) {
case priv: flprotect = PAGE_WRITECOPY; break;
}
- FileMappingHandle =
+ HANDLE FileMappingHandle =
::CreateFileMappingW(FileHandle, 0, flprotect,
(Offset + Size) >> 32,
(Offset + Size) & 0xffffffff,
0);
if (FileMappingHandle == NULL) {
- std::error_code ec = windows_error(GetLastError());
- if (FileDescriptor) {
- if (CloseFD)
- _close(FileDescriptor);
- } else
- ::CloseHandle(FileHandle);
+ std::error_code ec = mapWindowsError(GetLastError());
return ec;
}
Offset & 0xffffffff,
Size);
if (Mapping == NULL) {
- std::error_code ec = windows_error(GetLastError());
+ std::error_code ec = mapWindowsError(GetLastError());
::CloseHandle(FileMappingHandle);
- if (FileDescriptor) {
- if (CloseFD)
- _close(FileDescriptor);
- } else
- ::CloseHandle(FileHandle);
return ec;
}
MEMORY_BASIC_INFORMATION mbi;
SIZE_T Result = VirtualQuery(Mapping, &mbi, sizeof(mbi));
if (Result == 0) {
- std::error_code ec = windows_error(GetLastError());
+ std::error_code ec = mapWindowsError(GetLastError());
::UnmapViewOfFile(Mapping);
::CloseHandle(FileMappingHandle);
- if (FileDescriptor) {
- if (CloseFD)
- _close(FileDescriptor);
- } else
- ::CloseHandle(FileHandle);
return ec;
}
Size = mbi.RegionSize;
// Close all the handles except for the view. It will keep the other handles
// alive.
::CloseHandle(FileMappingHandle);
- if (FileDescriptor) {
- if (CloseFD)
- _close(FileDescriptor); // Also closes FileHandle.
- } else
- ::CloseHandle(FileHandle);
return std::error_code();
}
-mapped_file_region::mapped_file_region(const Twine &path,
- mapmode mode,
- uint64_t length,
- uint64_t offset,
- std::error_code &ec)
- : Mode(mode)
- , Size(length)
- , Mapping()
- , FileDescriptor()
- , FileHandle(INVALID_HANDLE_VALUE)
- , FileMappingHandle() {
- SmallString<128> path_storage;
- SmallVector<wchar_t, 128> path_utf16;
-
- // Convert path to UTF-16.
- if ((ec = UTF8ToUTF16(path.toStringRef(path_storage), path_utf16)))
- return;
-
- // Get file handle for creating a file mapping.
- FileHandle = ::CreateFileW(c_str(path_utf16),
- Mode == readonly ? GENERIC_READ
- : GENERIC_READ | GENERIC_WRITE,
- Mode == readonly ? FILE_SHARE_READ
- : 0,
- 0,
- Mode == readonly ? OPEN_EXISTING
- : OPEN_ALWAYS,
- Mode == readonly ? FILE_ATTRIBUTE_READONLY
- : FILE_ATTRIBUTE_NORMAL,
- 0);
- if (FileHandle == INVALID_HANDLE_VALUE) {
- ec = windows_error(::GetLastError());
- return;
- }
-
- FileDescriptor = 0;
- ec = init(FileDescriptor, true, offset);
- if (ec) {
- Mapping = FileMappingHandle = 0;
- FileHandle = INVALID_HANDLE_VALUE;
- FileDescriptor = 0;
- }
-}
-
-mapped_file_region::mapped_file_region(int fd,
- bool closefd,
- mapmode mode,
- uint64_t length,
- uint64_t offset,
- std::error_code &ec)
- : Mode(mode)
- , Size(length)
- , Mapping()
- , FileDescriptor(fd)
- , FileHandle(INVALID_HANDLE_VALUE)
- , FileMappingHandle() {
- FileHandle = reinterpret_cast<HANDLE>(_get_osfhandle(fd));
- if (FileHandle == INVALID_HANDLE_VALUE) {
- if (closefd)
- _close(FileDescriptor);
- FileDescriptor = 0;
- ec = make_error_code(errc::bad_file_descriptor);
- return;
- }
-
- ec = init(FileDescriptor, closefd, offset);
- if (ec) {
- Mapping = FileMappingHandle = 0;
- FileHandle = INVALID_HANDLE_VALUE;
- FileDescriptor = 0;
- }
+mapped_file_region::mapped_file_region(int fd, mapmode mode, uint64_t length,
+ uint64_t offset, std::error_code &ec)
+ : Size(length), Mapping() {
+ ec = init(fd, offset, mode);
+ if (ec)
+ Mapping = 0;
}
mapped_file_region::~mapped_file_region() {
::UnmapViewOfFile(Mapping);
}
-mapped_file_region::mapped_file_region(mapped_file_region &&other)
- : Mode(other.Mode)
- , Size(other.Size)
- , Mapping(other.Mapping)
- , FileDescriptor(other.FileDescriptor)
- , FileHandle(other.FileHandle)
- , FileMappingHandle(other.FileMappingHandle) {
- other.Mapping = other.FileMappingHandle = 0;
- other.FileHandle = INVALID_HANDLE_VALUE;
- other.FileDescriptor = 0;
-}
-
-mapped_file_region::mapmode mapped_file_region::flags() const {
- assert(Mapping && "Mapping failed but used anyway!");
- return Mode;
-}
-
uint64_t mapped_file_region::size() const {
assert(Mapping && "Mapping failed but used anyway!");
return Size;
}
char *mapped_file_region::data() const {
- assert(Mode != readonly && "Cannot get non-const data for readonly mapping!");
assert(Mapping && "Mapping failed but used anyway!");
return reinterpret_cast<char*>(Mapping);
}
StringRef path){
SmallVector<wchar_t, 128> path_utf16;
- if (std::error_code ec = UTF8ToUTF16(path, path_utf16))
+ if (std::error_code ec = widenPath(path, path_utf16))
return ec;
// Convert path to the format that Windows is happy with.
WIN32_FIND_DATAW FirstFind;
ScopedFindHandle FindHandle(::FindFirstFileW(c_str(path_utf16), &FirstFind));
if (!FindHandle)
- return windows_error(::GetLastError());
+ return mapWindowsError(::GetLastError());
size_t FilenameLen = ::wcslen(FirstFind.cFileName);
while ((FilenameLen == 1 && FirstFind.cFileName[0] == L'.') ||
// Check for end.
if (LastError == ERROR_NO_MORE_FILES)
return detail::directory_iterator_destruct(it);
- return windows_error(LastError);
+ return mapWindowsError(LastError);
} else
FilenameLen = ::wcslen(FirstFind.cFileName);
it.IterationHandle = intptr_t(FindHandle.take());
SmallString<128> directory_entry_path(path);
- path::append(directory_entry_path, directory_entry_name_utf8.str());
- it.CurrentEntry = directory_entry(directory_entry_path.str());
+ path::append(directory_entry_path, directory_entry_name_utf8);
+ it.CurrentEntry = directory_entry(directory_entry_path);
return std::error_code();
}
// Check for end.
if (LastError == ERROR_NO_MORE_FILES)
return detail::directory_iterator_destruct(it);
- return windows_error(LastError);
+ return mapWindowsError(LastError);
}
size_t FilenameLen = ::wcslen(FindData.cFileName);
}
std::error_code openFileForRead(const Twine &Name, int &ResultFD) {
- SmallString<128> PathStorage;
SmallVector<wchar_t, 128> PathUTF16;
- if (std::error_code EC =
- UTF8ToUTF16(Name.toStringRef(PathStorage), PathUTF16))
+ if (std::error_code EC = widenPath(Name, PathUTF16))
return EC;
- HANDLE H = ::CreateFileW(PathUTF16.begin(), GENERIC_READ,
- FILE_SHARE_READ | FILE_SHARE_WRITE, NULL,
- OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
+ HANDLE H =
+ ::CreateFileW(PathUTF16.begin(), GENERIC_READ,
+ FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
+ NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
if (H == INVALID_HANDLE_VALUE) {
DWORD LastError = ::GetLastError();
- std::error_code EC = windows_error(LastError);
+ std::error_code EC = mapWindowsError(LastError);
// Provide a better error message when trying to open directories.
// This only runs if we failed to open the file, so there is probably
// no performances issues.
int FD = ::_open_osfhandle(intptr_t(H), 0);
if (FD == -1) {
::CloseHandle(H);
- return windows_error(ERROR_INVALID_HANDLE);
+ return mapWindowsError(ERROR_INVALID_HANDLE);
}
ResultFD = FD;
assert((!(Flags & sys::fs::F_Excl) || !(Flags & sys::fs::F_Append)) &&
"Cannot specify both 'excl' and 'append' file creation flags!");
- SmallString<128> PathStorage;
SmallVector<wchar_t, 128> PathUTF16;
- if (std::error_code EC =
- UTF8ToUTF16(Name.toStringRef(PathStorage), PathUTF16))
+ if (std::error_code EC = widenPath(Name, PathUTF16))
return EC;
DWORD CreationDisposition;
if (H == INVALID_HANDLE_VALUE) {
DWORD LastError = ::GetLastError();
- std::error_code EC = windows_error(LastError);
+ std::error_code EC = mapWindowsError(LastError);
// Provide a better error message when trying to open directories.
// This only runs if we failed to open the file, so there is probably
// no performances issues.
int FD = ::_open_osfhandle(intptr_t(H), OpenFlags);
if (FD == -1) {
::CloseHandle(H);
- return windows_error(ERROR_INVALID_HANDLE);
+ return mapWindowsError(ERROR_INVALID_HANDLE);
}
ResultFD = FD;
} // end namespace fs
namespace path {
-
-bool home_directory(SmallVectorImpl<char> &result) {
- wchar_t Path[MAX_PATH];
- if (::SHGetFolderPathW(0, CSIDL_APPDATA | CSIDL_FLAG_CREATE, 0,
- /*SHGFP_TYPE_CURRENT*/0, Path) != S_OK)
- return false;
-
- if (UTF16ToUTF8(Path, ::wcslen(Path), result))
+static bool getKnownFolderPath(KNOWNFOLDERID folderId,
+ SmallVectorImpl<char> &result) {
+ wchar_t *path = nullptr;
+ if (::SHGetKnownFolderPath(folderId, KF_FLAG_CREATE, nullptr, &path) != S_OK)
return false;
- return true;
+ bool ok = !UTF16ToUTF8(path, ::wcslen(path), result);
+ ::CoTaskMemFree(path);
+ return ok;
}
-static bool getTempDirEnvVar(const char *Var, SmallVectorImpl<char> &Res) {
- SmallVector<wchar_t, 128> NameUTF16;
- if (windows::UTF8ToUTF16(Var, NameUTF16))
- return false;
-
- SmallVector<wchar_t, 1024> Buf;
- size_t Size = 1024;
- do {
- Buf.reserve(Size);
- Size =
- GetEnvironmentVariableW(NameUTF16.data(), Buf.data(), Buf.capacity());
- if (Size == 0)
- return false;
-
- // Try again with larger buffer.
- } while (Size > Buf.capacity());
- Buf.set_size(Size);
-
- if (windows::UTF16ToUTF8(Buf.data(), Size, Res))
- return false;
- return true;
+bool getUserCacheDir(SmallVectorImpl<char> &Result) {
+ return getKnownFolderPath(FOLDERID_LocalAppData, Result);
}
-static bool getTempDirEnvVar(SmallVectorImpl<char> &Res) {
- const char *EnvironmentVariables[] = {"TMP", "TEMP", "USERPROFILE"};
- for (const char *Env : EnvironmentVariables) {
- if (getTempDirEnvVar(Env, Res))
- return true;
- }
- return false;
+bool home_directory(SmallVectorImpl<char> &result) {
+ return getKnownFolderPath(FOLDERID_Profile, result);
}
void system_temp_directory(bool ErasedOnReboot, SmallVectorImpl<char> &Result) {
(void)ErasedOnReboot;
- Result.clear();
- // Check whether the temporary directory is specified by an environment
- // variable.
- if (getTempDirEnvVar(Result))
- return;
+ wchar_t Path[MAX_PATH + 2]; // GetTempPath can return MAX_PATH + 1 + null
+ if (auto PathLength = ::GetTempPathW(sizeof(Path) / sizeof(wchar_t), Path)) {
+ assert(PathLength > 0 && PathLength <= (MAX_PATH + 1) &&
+ "GetTempPath returned undocumented result");
+ if (Path[PathLength - 1] == L'\\')
+ --PathLength; // skip trailing "\" added by GetTempPath
+ if (!UTF16ToUTF8(Path, PathLength, Result))
+ return;
+ }
// Fall back to a system default.
const char *DefaultResult = "C:\\TEMP";
+ Result.clear();
Result.append(DefaultResult, DefaultResult + strlen(DefaultResult));
}
} // end namespace path
utf8.size(), utf16.begin(), 0);
if (len == 0)
- return windows_error(::GetLastError());
+ return mapWindowsError(::GetLastError());
utf16.reserve(len + 1);
utf16.set_size(len);
utf8.size(), utf16.begin(), utf16.size());
if (len == 0)
- return windows_error(::GetLastError());
+ return mapWindowsError(::GetLastError());
}
// Make utf16 null terminated.
0, NULL, NULL);
if (len == 0)
- return windows_error(::GetLastError());
+ return mapWindowsError(::GetLastError());
utf8.reserve(len);
utf8.set_size(len);
utf8.size(), NULL, NULL);
if (len == 0)
- return windows_error(::GetLastError());
+ return mapWindowsError(::GetLastError());
}
// Make utf8 null terminated.
projects / oota-llvm.git / blobdiff