using llvm::sys::windows::UTF8ToUTF16;
using llvm::sys::windows::UTF16ToUTF8;
+using llvm::sys::path::widenPath;
-static error_code windows_error(DWORD E) {
+static std::error_code windows_error(DWORD E) {
return mapWindowsError(E);
}
-static error_code TempDir(SmallVectorImpl<char> &Result) {
- SmallVector<wchar_t, 64> Res;
-retry_temp_dir:
- DWORD Len = ::GetTempPathW(Res.capacity(), Res.begin());
-
- if (Len == 0)
- return windows_error(::GetLastError());
-
- if (Len > Res.capacity()) {
- Res.reserve(Len);
- goto retry_temp_dir;
- }
-
- Res.set_size(Len);
- return UTF16ToUTF8(Res.begin(), Res.size(), Result);
-}
-
static bool is_separator(const wchar_t value) {
switch (value) {
case L'\\':
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 windows_error(::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) {
return Ret;
}
-error_code current_path(SmallVectorImpl<char> &result) {
+std::error_code current_path(SmallVectorImpl<char> &result) {
SmallVector<wchar_t, MAX_PATH> cur_path;
DWORD len = MAX_PATH;
return UTF16ToUTF8(cur_path.begin(), cur_path.size(), result);
}
-error_code create_directory(const Twine &path, bool IgnoreExisting) {
- SmallString<128> path_storage;
+std::error_code create_directory(const Twine &path, bool IgnoreExisting) {
SmallVector<wchar_t, 128> path_utf16;
- if (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)) {
return windows_error(LastError);
}
- return error_code();
-}
-
-error_code normalize_separators(SmallVectorImpl<char> &Path) {
- (void) Path;
- return error_code();
+ return std::error_code();
}
// We can't use symbolic links for windows.
-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);
-
+std::error_code create_link(const Twine &to, const Twine &from) {
// 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 (std::error_code ec = widenPath(from, wide_from))
+ return ec;
+ 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 error_code();
+ return std::error_code();
}
-error_code remove(const Twine &path, bool IgnoreNonExisting) {
- SmallString<128> path_storage;
+std::error_code remove(const Twine &path, bool IgnoreNonExisting) {
SmallVector<wchar_t, 128> path_utf16;
file_status ST;
- if (error_code EC = status(path, ST)) {
- if (EC != std::errc::no_such_file_or_directory || !IgnoreNonExisting)
+ if (std::error_code EC = status(path, ST)) {
+ if (EC != errc::no_such_file_or_directory || !IgnoreNonExisting)
return EC;
- return error_code();
+ return std::error_code();
}
- if (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))) {
- error_code EC = windows_error(::GetLastError());
- if (EC != std::errc::no_such_file_or_directory || !IgnoreNonExisting)
+ std::error_code EC = windows_error(::GetLastError());
+ if (EC != errc::no_such_file_or_directory || !IgnoreNonExisting)
return EC;
}
- return error_code();
+ return std::error_code();
}
if (!::DeleteFileW(c_str(path_utf16))) {
- error_code EC = windows_error(::GetLastError());
- if (EC != std::errc::no_such_file_or_directory || !IgnoreNonExisting)
+ std::error_code EC = windows_error(::GetLastError());
+ if (EC != errc::no_such_file_or_directory || !IgnoreNonExisting)
return EC;
}
- return error_code();
+ return std::error_code();
}
-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);
-
+std::error_code rename(const Twine &from, const Twine &to) {
// 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 (std::error_code ec = widenPath(from, wide_from))
+ return ec;
+ if (std::error_code ec = widenPath(to, wide_to))
+ return ec;
- error_code ec = error_code();
+ std::error_code ec = std::error_code();
for (int i = 0; i < 2000; i++) {
if (::MoveFileExW(wide_from.begin(), wide_to.begin(),
MOVEFILE_COPY_ALLOWED | MOVEFILE_REPLACE_EXISTING))
- return error_code();
+ return std::error_code();
DWORD LastError = ::GetLastError();
if (LastError != ERROR_ACCESS_DENIED)
break;
return ec;
}
-error_code resize_file(const Twine &path, uint64_t size) {
- SmallString<128> path_storage;
- SmallVector<wchar_t, 128> path_utf16;
-
- if (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 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 error_code(error, std::generic_category());
+ return std::error_code(error, std::generic_category());
}
-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 (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 error_code();
-}
-
-bool can_write(const Twine &Path) {
- // FIXME: take security attributes into account.
- 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) && !(Attr & FILE_ATTRIBUTE_READONLY);
-}
-
-bool can_execute(const Twine &Path) {
- SmallString<128> PathStorage;
- SmallVector<wchar_t, 128> PathUtf16;
+ return errc::no_such_file_or_directory;
+ }
- if (UTF8ToUTF16(Path.toStringRef(PathStorage), PathUtf16))
- return false;
+ if (Mode == AccessMode::Write && (Attributes & FILE_ATTRIBUTE_READONLY))
+ return errc::permission_denied;
- DWORD Attr = ::GetFileAttributesW(PathUtf16.begin());
- return Attr != INVALID_FILE_ATTRIBUTES;
+ return std::error_code();
}
bool equivalent(file_status A, file_status B) {
A.VolumeSerialNumber == B.VolumeSerialNumber;
}
-error_code equivalent(const Twine &A, const Twine &B, bool &result) {
+std::error_code equivalent(const Twine &A, const Twine &B, bool &result) {
file_status fsA, fsB;
- if (error_code ec = status(A, fsA)) return ec;
- if (error_code ec = status(B, fsB)) return ec;
+ if (std::error_code ec = status(A, fsA))
+ return ec;
+ if (std::error_code ec = status(B, fsB))
+ return ec;
result = equivalent(fsA, fsB);
- return error_code();
+ return std::error_code();
}
static bool isReservedName(StringRef path) {
return false;
}
-static error_code getStatus(HANDLE FileHandle, file_status &Result) {
+static std::error_code getStatus(HANDLE FileHandle, file_status &Result) {
if (FileHandle == INVALID_HANDLE_VALUE)
goto handle_status_error;
if (Err != NO_ERROR)
return windows_error(Err);
Result = file_status(file_type::type_unknown);
- return error_code();
+ return std::error_code();
}
case FILE_TYPE_DISK:
break;
case FILE_TYPE_CHAR:
Result = file_status(file_type::character_file);
- return error_code();
+ return std::error_code();
case FILE_TYPE_PIPE:
Result = file_status(file_type::fifo_file);
- return error_code();
+ return std::error_code();
}
BY_HANDLE_FILE_INFORMATION Info;
Info.ftLastWriteTime.dwLowDateTime,
Info.dwVolumeSerialNumber, Info.nFileSizeHigh,
Info.nFileSizeLow, Info.nFileIndexHigh, Info.nFileIndexLow);
- return error_code();
+ return std::error_code();
}
handle_status_error:
return windows_error(LastError);
}
-error_code status(const Twine &path, file_status &result) {
+std::error_code status(const Twine &path, file_status &result) {
SmallString<128> path_storage;
SmallVector<wchar_t, 128> path_utf16;
StringRef path8 = path.toStringRef(path_storage);
if (isReservedName(path8)) {
result = file_status(file_type::character_file);
- return error_code();
+ return std::error_code();
}
- if (error_code ec = UTF8ToUTF16(path8, path_utf16))
+ if (std::error_code ec = widenPath(path8, path_utf16))
return ec;
DWORD attr = ::GetFileAttributesW(path_utf16.begin());
return getStatus(h, result);
}
-error_code status(int FD, file_status &Result) {
+std::error_code status(int FD, file_status &Result) {
HANDLE FileHandle = reinterpret_cast<HANDLE>(_get_osfhandle(FD));
return getStatus(FileHandle, Result);
}
-error_code setLastModificationAndAccessTime(int FD, TimeValue Time) {
+std::error_code setLastModificationAndAccessTime(int FD, TimeValue Time) {
ULARGE_INTEGER UI;
UI.QuadPart = Time.toWin32Time();
FILETIME FT;
HANDLE FileHandle = reinterpret_cast<HANDLE>(_get_osfhandle(FD));
if (!SetFileTime(FileHandle, NULL, &FT, &FT))
return windows_error(::GetLastError());
- return error_code();
+ return std::error_code();
}
-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);
- return std::make_error_code(std::errc::invalid_argument);
- }
+ 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) {
- error_code ec = windows_error(GetLastError());
- if (FileDescriptor) {
- if (CloseFD)
- _close(FileDescriptor);
- } else
- ::CloseHandle(FileHandle);
+ std::error_code ec = windows_error(GetLastError());
return ec;
}
Offset & 0xffffffff,
Size);
if (Mapping == NULL) {
- error_code ec = windows_error(GetLastError());
+ std::error_code ec = windows_error(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) {
- error_code ec = windows_error(GetLastError());
+ std::error_code ec = windows_error(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 error_code();
-}
-
-mapped_file_region::mapped_file_region(const Twine &path,
- mapmode mode,
- uint64_t length,
- uint64_t offset,
- 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;
- }
+ return std::error_code();
}
-mapped_file_region::mapped_file_region(int fd,
- bool closefd,
- mapmode mode,
- uint64_t length,
- uint64_t offset,
- 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 = std::make_error_code(std::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);
}
return SysInfo.dwAllocationGranularity;
}
-error_code detail::directory_iterator_construct(detail::DirIterState &it,
+std::error_code detail::directory_iterator_construct(detail::DirIterState &it,
StringRef path){
SmallVector<wchar_t, 128> path_utf16;
- if (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.
// Construct the current directory entry.
SmallString<128> directory_entry_name_utf8;
- if (error_code ec = UTF16ToUTF8(FirstFind.cFileName,
- ::wcslen(FirstFind.cFileName),
- directory_entry_name_utf8))
+ if (std::error_code ec =
+ UTF16ToUTF8(FirstFind.cFileName, ::wcslen(FirstFind.cFileName),
+ directory_entry_name_utf8))
return ec;
it.IterationHandle = intptr_t(FindHandle.take());
path::append(directory_entry_path, directory_entry_name_utf8.str());
it.CurrentEntry = directory_entry(directory_entry_path.str());
- return error_code();
+ return std::error_code();
}
-error_code detail::directory_iterator_destruct(detail::DirIterState &it) {
+std::error_code detail::directory_iterator_destruct(detail::DirIterState &it) {
if (it.IterationHandle != 0)
// Closes the handle if it's valid.
ScopedFindHandle close(HANDLE(it.IterationHandle));
it.IterationHandle = 0;
it.CurrentEntry = directory_entry();
- return error_code();
+ return std::error_code();
}
-error_code detail::directory_iterator_increment(detail::DirIterState &it) {
+std::error_code detail::directory_iterator_increment(detail::DirIterState &it) {
WIN32_FIND_DATAW FindData;
if (!::FindNextFileW(HANDLE(it.IterationHandle), &FindData)) {
DWORD LastError = ::GetLastError();
return directory_iterator_increment(it);
SmallString<128> directory_entry_path_utf8;
- if (error_code ec = UTF16ToUTF8(FindData.cFileName,
- ::wcslen(FindData.cFileName),
- directory_entry_path_utf8))
+ if (std::error_code ec =
+ UTF16ToUTF8(FindData.cFileName, ::wcslen(FindData.cFileName),
+ directory_entry_path_utf8))
return ec;
it.CurrentEntry.replace_filename(Twine(directory_entry_path_utf8));
- return error_code();
+ return std::error_code();
}
-error_code openFileForRead(const Twine &Name, int &ResultFD) {
- SmallString<128> PathStorage;
+std::error_code openFileForRead(const Twine &Name, int &ResultFD) {
SmallVector<wchar_t, 128> PathUTF16;
- if (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,
OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
if (H == INVALID_HANDLE_VALUE) {
DWORD LastError = ::GetLastError();
- error_code EC = windows_error(LastError);
+ std::error_code EC = windows_error(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.
if (LastError != ERROR_ACCESS_DENIED)
return EC;
if (is_directory(Name))
- return std::make_error_code(std::errc::is_a_directory);
+ return make_error_code(errc::is_a_directory);
return EC;
}
}
ResultFD = FD;
- return error_code();
+ return std::error_code();
}
-error_code openFileForWrite(const Twine &Name, int &ResultFD,
+std::error_code openFileForWrite(const Twine &Name, int &ResultFD,
sys::fs::OpenFlags Flags, unsigned Mode) {
// Verify that we don't have both "append" and "excl".
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 (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();
- error_code EC = windows_error(LastError);
+ std::error_code EC = windows_error(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.
if (LastError != ERROR_ACCESS_DENIED)
return EC;
if (is_directory(Name))
- return std::make_error_code(std::errc::is_a_directory);
+ return make_error_code(errc::is_a_directory);
return EC;
}
}
ResultFD = FD;
- return error_code();
+ return std::error_code();
}
} // end namespace fs
return true;
}
+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;
+}
+
+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;
+}
+
+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;
+
+ // Fall back to a system default.
+ const char *DefaultResult = "C:\\TEMP";
+ Result.append(DefaultResult, DefaultResult + strlen(DefaultResult));
+}
} // end namespace path
namespace windows {
std::error_code UTF8ToUTF16(llvm::StringRef utf8,
- llvm::SmallVectorImpl<wchar_t> &utf16) {
+ llvm::SmallVectorImpl<wchar_t> &utf16) {
if (!utf8.empty()) {
int len = ::MultiByteToWideChar(CP_UTF8, MB_ERR_INVALID_CHARS, utf8.begin(),
utf8.size(), utf16.begin(), 0);
return std::error_code();
}
-std::error_code UTF16ToUTF8(const wchar_t *utf16, size_t utf16_len,
- llvm::SmallVectorImpl<char> &utf8) {
+static
+std::error_code UTF16ToCodePage(unsigned codepage, const wchar_t *utf16,
+ size_t utf16_len,
+ llvm::SmallVectorImpl<char> &utf8) {
if (utf16_len) {
// Get length.
- int len = ::WideCharToMultiByte(CP_UTF8, 0, utf16, utf16_len, utf8.begin(),
+ int len = ::WideCharToMultiByte(codepage, 0, utf16, utf16_len, utf8.begin(),
0, NULL, NULL);
if (len == 0)
utf8.set_size(len);
// Now do the actual conversion.
- len = ::WideCharToMultiByte(CP_UTF8, 0, utf16, utf16_len, utf8.data(),
+ len = ::WideCharToMultiByte(codepage, 0, utf16, utf16_len, utf8.data(),
utf8.size(), NULL, NULL);
if (len == 0)
return std::error_code();
}
+
+std::error_code UTF16ToUTF8(const wchar_t *utf16, size_t utf16_len,
+ llvm::SmallVectorImpl<char> &utf8) {
+ return UTF16ToCodePage(CP_UTF8, utf16, utf16_len, utf8);
+}
+
+std::error_code UTF16ToCurCP(const wchar_t *utf16, size_t utf16_len,
+ llvm::SmallVectorImpl<char> &utf8) {
+ return UTF16ToCodePage(CP_ACP, utf16, utf16_len, utf8);
+}
} // end namespace windows
} // end namespace sys
} // end namespace llvm
projects / oota-llvm.git / blobdiff