//===----------------------------------------------------------------------===//
#include "llvm/ADT/STLExtras.h"
-#include "Windows.h"
+#include "llvm/Support/WindowsError.h"
#include <fcntl.h>
#include <io.h>
#include <sys/stat.h>
#include <sys/types.h>
+// These two headers must be included last, and make sure shlobj is required
+// after Windows.h to make sure it picks up our definition of _WIN32_WINNT
+#include "WindowsSupport.h"
+#include <shlobj.h>
+
#undef max
// MinGW doesn't define this.
typedef int errno_t;
#endif
-using namespace llvm;
-
-namespace {
- typedef BOOLEAN (WINAPI *PtrCreateSymbolicLinkW)(
- /*__in*/ LPCWSTR lpSymlinkFileName,
- /*__in*/ LPCWSTR lpTargetFileName,
- /*__in*/ DWORD dwFlags);
-
- PtrCreateSymbolicLinkW create_symbolic_link_api = PtrCreateSymbolicLinkW(
- ::GetProcAddress(::GetModuleHandleA("kernel32.dll"),
- "CreateSymbolicLinkW"));
-
- error_code UTF8ToUTF16(StringRef utf8, SmallVectorImpl<wchar_t> &utf16) {
- int len = ::MultiByteToWideChar(CP_UTF8, MB_ERR_INVALID_CHARS,
- utf8.begin(), utf8.size(),
- utf16.begin(), 0);
-
- if (len == 0)
- return windows_error(::GetLastError());
-
- utf16.reserve(len + 1);
- utf16.set_size(len);
-
- len = ::MultiByteToWideChar(CP_UTF8, MB_ERR_INVALID_CHARS,
- utf8.begin(), utf8.size(),
- utf16.begin(), utf16.size());
-
- if (len == 0)
- return windows_error(::GetLastError());
-
- // Make utf16 null terminated.
- utf16.push_back(0);
- utf16.pop_back();
-
- return error_code::success();
- }
-
- error_code UTF16ToUTF8(const wchar_t *utf16, size_t utf16_len,
- SmallVectorImpl<char> &utf8) {
- // Get length.
- int len = ::WideCharToMultiByte(CP_UTF8, 0,
- utf16, utf16_len,
- utf8.begin(), 0,
- NULL, NULL);
-
- if (len == 0)
- return windows_error(::GetLastError());
-
- utf8.reserve(len);
- utf8.set_size(len);
-
- // Now do the actual conversion.
- len = ::WideCharToMultiByte(CP_UTF8, 0,
- utf16, utf16_len,
- utf8.data(), utf8.size(),
- NULL, NULL);
+#ifdef _MSC_VER
+# pragma comment(lib, "advapi32.lib") // This provides CryptAcquireContextW.
+#endif
- if (len == 0)
- return windows_error(::GetLastError());
+using namespace llvm;
- // Make utf8 null terminated.
- utf8.push_back(0);
- utf8.pop_back();
+using llvm::sys::windows::UTF8ToUTF16;
+using llvm::sys::windows::UTF16ToUTF8;
+using llvm::sys::path::widenPath;
- return error_code::success();
+static bool is_separator(const wchar_t value) {
+ switch (value) {
+ case L'\\':
+ case L'/':
+ return true;
+ default:
+ return false;
}
+}
- error_code TempDir(SmallVectorImpl<wchar_t> &result) {
- retry_temp_dir:
- DWORD len = ::GetTempPathW(result.capacity(), result.begin());
-
- if (len == 0)
- return windows_error(::GetLastError());
-
- if (len > result.capacity()) {
- result.reserve(len);
- goto retry_temp_dir;
- }
-
- result.set_size(len);
- return error_code::success();
+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());
}
- bool is_separator(const wchar_t value) {
- switch (value) {
- case L'\\':
- case L'/':
- return true;
- default:
- return false;
+ // 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);
}
- }
-}
-
-// FIXME: mode should be used here and default to user r/w only,
-// it currently comes in as a UNIX mode.
-static error_code createUniqueEntity(const Twine &model, int &result_fd,
- SmallVectorImpl<char> &result_path,
- bool makeAbsolute, unsigned mode,
- FSEntity Type) {
- // Use result_path as temp storage.
- result_path.set_size(0);
- StringRef m = model.toStringRef(result_path);
-
- SmallVector<wchar_t, 128> model_utf16;
- if (error_code ec = UTF8ToUTF16(m, model_utf16)) return ec;
-
- if (makeAbsolute) {
- // Make model absolute by prepending a temp directory if it's not already.
- bool absolute = sys::path::is_absolute(m);
-
- if (!absolute) {
- SmallVector<wchar_t, 64> temp_dir;
- if (error_code ec = TempDir(temp_dir)) return ec;
- // Handle c: by removing it.
- if (model_utf16.size() > 2 && model_utf16[1] == L':') {
- model_utf16.erase(model_utf16.begin(), model_utf16.begin() + 2);
- }
- model_utf16.insert(model_utf16.begin(), temp_dir.begin(), temp_dir.end());
+ // 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);
}
- // Replace '%' with random chars. From here on, DO NOT modify model. It may be
- // needed if the randomly chosen path already exists.
- SmallVector<wchar_t, 128> random_path_utf16;
-
- // Get a Crypto Provider for CryptGenRandom.
- HCRYPTPROV HCPC;
- if (!::CryptAcquireContextW(&HCPC,
- NULL,
- NULL,
- PROV_RSA_FULL,
- CRYPT_VERIFYCONTEXT))
- return windows_error(::GetLastError());
- ScopedCryptContext CryptoProvider(HCPC);
-
-retry_random_path:
- random_path_utf16.set_size(0);
- for (SmallVectorImpl<wchar_t>::const_iterator i = model_utf16.begin(),
- e = model_utf16.end();
- i != e; ++i) {
- if (*i == L'%') {
- BYTE val = 0;
- if (!::CryptGenRandom(CryptoProvider, 1, &val))
- return windows_error(::GetLastError());
- random_path_utf16.push_back("0123456789abcdef"[val & 15]);
- }
- else
- random_path_utf16.push_back(*i);
- }
- // Make random_path_utf16 null terminated.
- random_path_utf16.push_back(0);
- random_path_utf16.pop_back();
-
- HANDLE TempFileHandle;
-
- switch (Type) {
- case FS_File: {
- // Try to create + open the path.
- TempFileHandle =
- ::CreateFileW(random_path_utf16.begin(), GENERIC_READ | GENERIC_WRITE,
- FILE_SHARE_READ, NULL,
- // Return ERROR_FILE_EXISTS if the file
- // already exists.
- CREATE_NEW, FILE_ATTRIBUTE_TEMPORARY, NULL);
- if (TempFileHandle == INVALID_HANDLE_VALUE) {
- // If the file existed, try again, otherwise, error.
- error_code ec = windows_error(::GetLastError());
- if (ec == windows_error::file_exists)
- goto retry_random_path;
+ // Just use the caller's original path.
+ return UTF8ToUTF16(Path8Str, Path16);
+}
+} // end namespace path
- return ec;
- }
+namespace fs {
- // Convert the Windows API file handle into a C-runtime handle.
- int fd = ::_open_osfhandle(intptr_t(TempFileHandle), 0);
- if (fd == -1) {
- ::CloseHandle(TempFileHandle);
- ::DeleteFileW(random_path_utf16.begin());
- // MSDN doesn't say anything about _open_osfhandle setting errno or
- // GetLastError(), so just return invalid_handle.
- return windows_error::invalid_handle;
- }
+std::string getMainExecutable(const char *argv0, void *MainExecAddr) {
+ SmallVector<wchar_t, MAX_PATH> PathName;
+ DWORD Size = ::GetModuleFileNameW(NULL, PathName.data(), PathName.capacity());
- result_fd = fd;
- break;
- }
+ // A zero return value indicates a failure other than insufficient space.
+ if (Size == 0)
+ return "";
- case FS_Name: {
- DWORD attributes = ::GetFileAttributesW(random_path_utf16.begin());
- if (attributes != INVALID_FILE_ATTRIBUTES)
- goto retry_random_path;
- error_code EC = make_error_code(windows_error(::GetLastError()));
- if (EC != windows_error::file_not_found &&
- EC != windows_error::path_not_found)
- return EC;
- break;
- }
+ // Insufficient space is determined by a return value equal to the size of
+ // the buffer passed in.
+ if (Size == PathName.capacity())
+ return "";
- case FS_Dir:
- if (!::CreateDirectoryW(random_path_utf16.begin(), NULL)) {
- error_code EC = windows_error(::GetLastError());
- if (EC != windows_error::already_exists)
- return EC;
- goto retry_random_path;
- }
- break;
- }
+ // On success, GetModuleFileNameW returns the number of characters written to
+ // the buffer not including the NULL terminator.
+ PathName.set_size(Size);
- // Set result_path to the utf-8 representation of the path.
- if (error_code ec = UTF16ToUTF8(random_path_utf16.begin(),
- random_path_utf16.size(), result_path)) {
- switch (Type) {
- case FS_File:
- ::CloseHandle(TempFileHandle);
- ::DeleteFileW(random_path_utf16.begin());
- case FS_Name:
- break;
- case FS_Dir:
- ::RemoveDirectoryW(random_path_utf16.begin());
- break;
- }
- return ec;
- }
+ // Convert the result from UTF-16 to UTF-8.
+ SmallVector<char, MAX_PATH> PathNameUTF8;
+ if (UTF16ToUTF8(PathName.data(), PathName.size(), PathNameUTF8))
+ return "";
- return error_code::success();
+ return std::string(PathNameUTF8.data());
}
-namespace llvm {
-namespace sys {
-namespace fs {
+UniqueID file_status::getUniqueID() const {
+ // The file is uniquely identified by the volume serial number along
+ // with the 64-bit file identifier.
+ uint64_t FileID = (static_cast<uint64_t>(FileIndexHigh) << 32ULL) |
+ static_cast<uint64_t>(FileIndexLow);
-std::string getMainExecutable(const char *argv0, void *MainExecAddr) {
- char pathname[MAX_PATH];
- DWORD ret = ::GetModuleFileNameA(NULL, pathname, MAX_PATH);
- return ret != MAX_PATH ? pathname : "";
+ return UniqueID(VolumeSerialNumber, FileID);
}
-
TimeValue file_status::getLastModificationTime() const {
ULARGE_INTEGER UI;
UI.LowPart = LastWriteTimeLow;
return Ret;
}
-error_code current_path(SmallVectorImpl<char> &result) {
- SmallVector<wchar_t, 128> cur_path;
- cur_path.reserve(128);
-retry_cur_dir:
- DWORD len = ::GetCurrentDirectoryW(cur_path.capacity(), cur_path.data());
-
- // A zero return value indicates a failure other than insufficient space.
- if (len == 0)
- return windows_error(::GetLastError());
+std::error_code current_path(SmallVectorImpl<char> &result) {
+ SmallVector<wchar_t, MAX_PATH> cur_path;
+ DWORD len = MAX_PATH;
- // If there's insufficient space, the len returned is larger than the len
- // given.
- if (len > cur_path.capacity()) {
+ do {
cur_path.reserve(len);
- goto retry_cur_dir;
- }
-
- cur_path.set_size(len);
- // cur_path now holds the current directory in utf-16. Convert to utf-8.
-
- // Find out how much space we need. Sadly, this function doesn't return the
- // size needed unless you tell it the result size is 0, which means you
- // _always_ have to call it twice.
- len = ::WideCharToMultiByte(CP_UTF8, 0,
- cur_path.data(), cur_path.size(),
- result.data(), 0,
- NULL, NULL);
-
- if (len == 0)
- return make_error_code(windows_error(::GetLastError()));
-
- result.reserve(len);
- result.set_size(len);
- // Now do the actual conversion.
- len = ::WideCharToMultiByte(CP_UTF8, 0,
- cur_path.data(), cur_path.size(),
- result.data(), result.size(),
- NULL, NULL);
- if (len == 0)
- return windows_error(::GetLastError());
-
- return error_code::success();
-}
+ len = ::GetCurrentDirectoryW(cur_path.capacity(), cur_path.data());
-error_code copy_file(const Twine &from, const Twine &to, copy_option copt) {
- // 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;
-
- // Copy the file.
- BOOL res = ::CopyFileW(wide_from.begin(), wide_to.begin(),
- copt != copy_option::overwrite_if_exists);
+ // A zero return value indicates a failure other than insufficient space.
+ if (len == 0)
+ return mapWindowsError(::GetLastError());
- if (res == 0)
- return windows_error(::GetLastError());
+ // If there's insufficient space, the len returned is larger than the len
+ // given.
+ } while (len > cur_path.capacity());
- return error_code::success();
+ // On success, GetCurrentDirectoryW returns the number of characters not
+ // including the null-terminator.
+ cur_path.set_size(len);
+ return UTF16ToUTF8(cur_path.begin(), cur_path.size(), result);
}
-error_code create_directory(const Twine &path, bool &existed) {
- SmallString<128> path_storage;
+std::error_code create_directory(const Twine &path, bool IgnoreExisting,
+ perms Perms) {
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)) {
- error_code ec = windows_error(::GetLastError());
- if (ec == windows_error::already_exists)
- existed = true;
- else
- return ec;
- } else
- existed = false;
+ DWORD LastError = ::GetLastError();
+ if (LastError != ERROR_ALREADY_EXISTS || !IgnoreExisting)
+ return mapWindowsError(LastError);
+ }
- return error_code::success();
+ return std::error_code();
}
-error_code create_hard_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);
-
+// We can't use symbolic links for windows.
+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::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;
+ return mapWindowsError(::GetLastError());
- if (!create_symbolic_link_api(wide_from.begin(), wide_to.begin(), 0))
- return windows_error(::GetLastError());
-
- return error_code::success();
+ return std::error_code();
}
-error_code remove(const Twine &path, bool &existed) {
- 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))
- return ec;
+ file_status ST;
+ if (std::error_code EC = status(path, ST)) {
+ if (EC != errc::no_such_file_or_directory || !IgnoreNonExisting)
+ return EC;
+ 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 (ST.type() == file_type::directory_file) {
if (!::RemoveDirectoryW(c_str(path_utf16))) {
- error_code ec = windows_error(::GetLastError());
- if (ec != windows_error::file_not_found)
- return ec;
- existed = false;
- } else
- existed = true;
- } else {
- if (!::DeleteFileW(c_str(path_utf16))) {
- error_code ec = windows_error(::GetLastError());
- if (ec != windows_error::file_not_found)
- return ec;
- existed = false;
- } else
- existed = true;
+ std::error_code EC = mapWindowsError(::GetLastError());
+ if (EC != errc::no_such_file_or_directory || !IgnoreNonExisting)
+ return EC;
+ }
+ return std::error_code();
}
-
- return error_code::success();
+ if (!::DeleteFileW(c_str(path_utf16))) {
+ std::error_code EC = mapWindowsError(::GetLastError());
+ if (EC != errc::no_such_file_or_directory || !IgnoreNonExisting)
+ return EC;
+ }
+ 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;
+
+ 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.
- error_code ec = error_code::success();
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 error_code::success();
- ec = windows_error(::GetLastError());
- if (ec != windows_error::access_denied)
- break;
- // Retry MoveFile() at ACCESS_DENIED.
- // System scanners (eg. indexer) might open the source file when
- // It is written and closed.
+ return std::error_code();
+
+ DWORD MoveError = ::GetLastError();
+ ec = mapWindowsError(MoveError);
+ if (MoveError != ERROR_ACCESS_DENIED) break;
+
::Sleep(1);
}
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, 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, 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.
- error_code ec = make_error_code(windows_error(::GetLastError()));
- if (ec != windows_error::file_not_found &&
- ec != windows_error::path_not_found)
- return ec;
- result = false;
- } else
- result = true;
- return error_code::success();
-}
-
-bool can_write(const Twine &Path) {
- // FIXME: take security attributes into account.
- SmallString<128> PathStorage;
- SmallVector<wchar_t, 128> PathUtf16;
+ DWORD LastError = ::GetLastError();
+ if (LastError != ERROR_FILE_NOT_FOUND &&
+ LastError != ERROR_PATH_NOT_FOUND)
+ return mapWindowsError(LastError);
+ 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) && !(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) {
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::success();
-}
-
-error_code getUniqueID(const Twine Path, uint64_t &Result) {
- file_status Status;
- if (error_code E = status(Path, Status))
- return E;
-
- // The file is uniquely identified by the volume serial number along
- // with the 64-bit file identifier.
- Result = (static_cast<uint64_t>(Status.FileIndexHigh) << 32ULL) |
- static_cast<uint64_t>(Status.FileIndexLow);
-
- // Because the serial number is 32-bits, but we've already used up all 64
- // bits for the file index, XOR the serial number into the high 32 bits of
- // the resulting value. We could potentially get collisons from this, but
- // the likelihood is low.
- Result ^= (static_cast<uint64_t>(Status.VolumeSerialNumber) << 32ULL);
-
- return error_code::success();
+ return std::error_code();
}
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.
return false;
}
-error_code status(const Twine &path, file_status &result) {
+static std::error_code getStatus(HANDLE FileHandle, file_status &Result) {
+ if (FileHandle == INVALID_HANDLE_VALUE)
+ goto handle_status_error;
+
+ switch (::GetFileType(FileHandle)) {
+ default:
+ llvm_unreachable("Don't know anything about this file type");
+ case FILE_TYPE_UNKNOWN: {
+ DWORD Err = ::GetLastError();
+ if (Err != NO_ERROR)
+ return mapWindowsError(Err);
+ Result = file_status(file_type::type_unknown);
+ return std::error_code();
+ }
+ case FILE_TYPE_DISK:
+ break;
+ case FILE_TYPE_CHAR:
+ Result = file_status(file_type::character_file);
+ return std::error_code();
+ case FILE_TYPE_PIPE:
+ Result = file_status(file_type::fifo_file);
+ return std::error_code();
+ }
+
+ BY_HANDLE_FILE_INFORMATION Info;
+ if (!::GetFileInformationByHandle(FileHandle, &Info))
+ goto handle_status_error;
+
+ {
+ file_type Type = (Info.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
+ ? file_type::directory_file
+ : file_type::regular_file;
+ Result =
+ file_status(Type, Info.ftLastWriteTime.dwHighDateTime,
+ Info.ftLastWriteTime.dwLowDateTime,
+ Info.dwVolumeSerialNumber, Info.nFileSizeHigh,
+ Info.nFileSizeLow, Info.nFileIndexHigh, Info.nFileIndexLow);
+ return std::error_code();
+ }
+
+handle_status_error:
+ DWORD LastError = ::GetLastError();
+ if (LastError == ERROR_FILE_NOT_FOUND ||
+ LastError == ERROR_PATH_NOT_FOUND)
+ Result = file_status(file_type::file_not_found);
+ else if (LastError == ERROR_SHARING_VIOLATION)
+ Result = file_status(file_type::type_unknown);
+ else
+ Result = file_status(file_type::status_error);
+ return mapWindowsError(LastError);
+}
+
+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::success();
+ 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());
if (attr == INVALID_FILE_ATTRIBUTES)
- goto handle_status_error;
+ return getStatus(INVALID_HANDLE_VALUE, result);
// Handle reparse points.
if (attr & FILE_ATTRIBUTE_REPARSE_POINT) {
FILE_FLAG_BACKUP_SEMANTICS,
0));
if (!h)
- goto handle_status_error;
+ return getStatus(INVALID_HANDLE_VALUE, result);
}
- if (attr & FILE_ATTRIBUTE_DIRECTORY)
- result = file_status(file_type::directory_file);
- else {
- ScopedFileHandle h(
- ::CreateFileW(path_utf16.begin(),
- 0, // Attributes only.
+ ScopedFileHandle h(
+ ::CreateFileW(path_utf16.begin(), 0, // Attributes only.
FILE_SHARE_DELETE | FILE_SHARE_READ | FILE_SHARE_WRITE,
- NULL,
- OPEN_EXISTING,
- FILE_FLAG_BACKUP_SEMANTICS,
- 0));
+ NULL, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, 0));
if (!h)
- goto handle_status_error;
- BY_HANDLE_FILE_INFORMATION Info;
- if (!::GetFileInformationByHandle(h, &Info))
- goto handle_status_error;
-
- result = file_status(
- file_type::regular_file, Info.ftLastWriteTime.dwHighDateTime,
- Info.ftLastWriteTime.dwLowDateTime, Info.dwVolumeSerialNumber,
- Info.nFileSizeHigh, Info.nFileSizeLow, Info.nFileIndexHigh,
- Info.nFileIndexLow);
- }
- return error_code::success();
+ return getStatus(INVALID_HANDLE_VALUE, result);
-handle_status_error:
- error_code ec = windows_error(::GetLastError());
- if (ec == windows_error::file_not_found ||
- ec == windows_error::path_not_found)
- result = file_status(file_type::file_not_found);
- else if (ec == windows_error::sharing_violation)
- result = file_status(file_type::type_unknown);
- else {
- result = file_status(file_type::status_error);
- return ec;
- }
+ return getStatus(h, result);
+}
- return error_code::success();
+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;
FT.dwHighDateTime = UI.HighPart;
HANDLE FileHandle = reinterpret_cast<HANDLE>(_get_osfhandle(FD));
if (!SetFileTime(FileHandle, NULL, &FT, &FT))
- return windows_error(::GetLastError());
- return error_code::success();
-}
-
-error_code get_magic(const Twine &path, uint32_t len,
- SmallVectorImpl<char> &result) {
- SmallString<128> path_storage;
- SmallVector<wchar_t, 128> path_utf16;
- result.set_size(0);
-
- // Convert path to UTF-16.
- if (error_code ec = UTF8ToUTF16(path.toStringRef(path_storage),
- path_utf16))
- return ec;
-
- // Open file.
- HANDLE file = ::CreateFileW(c_str(path_utf16),
- GENERIC_READ,
- FILE_SHARE_READ,
- NULL,
- OPEN_EXISTING,
- FILE_ATTRIBUTE_READONLY,
- NULL);
- if (file == INVALID_HANDLE_VALUE)
- return windows_error(::GetLastError());
-
- // Allocate buffer.
- result.reserve(len);
-
- // Get magic!
- DWORD bytes_read = 0;
- BOOL read_success = ::ReadFile(file, result.data(), len, &bytes_read, NULL);
- error_code ec = windows_error(::GetLastError());
- ::CloseHandle(file);
- if (!read_success || (bytes_read != len)) {
- // Set result size to the number of bytes read if it's valid.
- if (bytes_read <= len)
- result.set_size(bytes_read);
- // ERROR_HANDLE_EOF is mapped to errc::value_too_large.
- return ec;
- }
-
- result.set_size(len);
- return error_code::success();
+ return mapWindowsError(::GetLastError());
+ 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);
+ 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 readonly: flprotect = PAGE_READONLY; break;
case readwrite: flprotect = PAGE_READWRITE; break;
case priv: flprotect = PAGE_WRITECOPY; break;
- default: llvm_unreachable("invalid mapping mode");
}
- FileMappingHandle = ::CreateFileMapping(FileHandle,
- 0,
- flprotect,
- Size >> 32,
- Size & 0xffffffff,
- 0);
+ 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 = mapWindowsError(GetLastError());
return ec;
}
case readonly: dwDesiredAccess = FILE_MAP_READ; break;
case readwrite: dwDesiredAccess = FILE_MAP_WRITE; break;
case priv: dwDesiredAccess = FILE_MAP_COPY; break;
- default: llvm_unreachable("invalid mapping mode");
}
Mapping = ::MapViewOfFile(FileMappingHandle,
dwDesiredAccess,
Offset & 0xffffffff,
Size);
if (Mapping == NULL) {
- 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) {
- 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 error_code::success();
-}
-
-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 = 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);
}
-#if LLVM_HAS_RVALUE_REFERENCES
-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;
-}
-#endif
-
-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.
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'.') ||
(FilenameLen == 2 && FirstFind.cFileName[0] == L'.' &&
FirstFind.cFileName[1] == L'.'))
if (!::FindNextFileW(FindHandle, &FirstFind)) {
- error_code ec = windows_error(::GetLastError());
+ DWORD LastError = ::GetLastError();
// Check for end.
- if (ec == windows_error::no_more_files)
+ if (LastError == ERROR_NO_MORE_FILES)
return detail::directory_iterator_destruct(it);
- return ec;
+ return mapWindowsError(LastError);
} else
FilenameLen = ::wcslen(FirstFind.cFileName);
// 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());
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 error_code::success();
+ 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::success();
+ 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)) {
- error_code ec = windows_error(::GetLastError());
+ DWORD LastError = ::GetLastError();
// Check for end.
- if (ec == windows_error::no_more_files)
+ if (LastError == ERROR_NO_MORE_FILES)
return detail::directory_iterator_destruct(it);
- return ec;
+ return mapWindowsError(LastError);
}
size_t FilenameLen = ::wcslen(FindData.cFileName);
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::success();
+ return std::error_code();
+}
+
+std::error_code openFileForRead(const Twine &Name, int &ResultFD) {
+ SmallVector<wchar_t, 128> PathUTF16;
+
+ if (std::error_code EC = widenPath(Name, PathUTF16))
+ return EC;
+
+ 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 = 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.
+ if (LastError != ERROR_ACCESS_DENIED)
+ return EC;
+ if (is_directory(Name))
+ return make_error_code(errc::is_a_directory);
+ return EC;
+ }
+
+ int FD = ::_open_osfhandle(intptr_t(H), 0);
+ if (FD == -1) {
+ ::CloseHandle(H);
+ return mapWindowsError(ERROR_INVALID_HANDLE);
+ }
+
+ ResultFD = FD;
+ return std::error_code();
+}
+
+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!");
+
+ SmallVector<wchar_t, 128> PathUTF16;
+
+ if (std::error_code EC = widenPath(Name, PathUTF16))
+ return EC;
+
+ DWORD CreationDisposition;
+ if (Flags & F_Excl)
+ CreationDisposition = CREATE_NEW;
+ else if (Flags & F_Append)
+ CreationDisposition = OPEN_ALWAYS;
+ else
+ CreationDisposition = CREATE_ALWAYS;
+
+ DWORD Access = GENERIC_WRITE;
+ if (Flags & F_RW)
+ Access |= GENERIC_READ;
+
+ HANDLE H = ::CreateFileW(PathUTF16.begin(), Access,
+ FILE_SHARE_READ | FILE_SHARE_WRITE, NULL,
+ CreationDisposition, FILE_ATTRIBUTE_NORMAL, NULL);
+
+ if (H == INVALID_HANDLE_VALUE) {
+ DWORD LastError = ::GetLastError();
+ 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.
+ if (LastError != ERROR_ACCESS_DENIED)
+ return EC;
+ if (is_directory(Name))
+ return make_error_code(errc::is_a_directory);
+ return EC;
+ }
+
+ int OpenFlags = 0;
+ if (Flags & F_Append)
+ OpenFlags |= _O_APPEND;
+
+ if (Flags & F_Text)
+ OpenFlags |= _O_TEXT;
+
+ int FD = ::_open_osfhandle(intptr_t(H), OpenFlags);
+ if (FD == -1) {
+ ::CloseHandle(H);
+ return mapWindowsError(ERROR_INVALID_HANDLE);
+ }
+
+ ResultFD = FD;
+ return std::error_code();
}
+} // end namespace fs
-error_code map_file_pages(const Twine &path, off_t file_offset, size_t size,
- bool map_writable, void *&result) {
- assert(0 && "NOT IMPLEMENTED");
- return windows_error::invalid_function;
+namespace path {
+static bool getKnownFolderPath(KNOWNFOLDERID folderId,
+ SmallVectorImpl<char> &result) {
+ wchar_t *path = nullptr;
+ if (::SHGetKnownFolderPath(folderId, KF_FLAG_CREATE, nullptr, &path) != S_OK)
+ return false;
+
+ bool ok = !UTF16ToUTF8(path, ::wcslen(path), result);
+ ::CoTaskMemFree(path);
+ return ok;
}
-error_code unmap_file_pages(void *base, size_t size) {
- assert(0 && "NOT IMPLEMENTED");
- return windows_error::invalid_function;
+bool getUserCacheDir(SmallVectorImpl<char> &Result) {
+ return getKnownFolderPath(FOLDERID_LocalAppData, Result);
}
+bool home_directory(SmallVectorImpl<char> &result) {
+ return getKnownFolderPath(FOLDERID_Profile, result);
+}
+static bool getTempDirEnvVar(const wchar_t *Var, SmallVectorImpl<char> &Res) {
+ SmallVector<wchar_t, 1024> Buf;
+ size_t Size = 1024;
+ do {
+ Buf.reserve(Size);
+ Size = GetEnvironmentVariableW(Var, Buf.data(), Buf.capacity());
+ if (Size == 0)
+ return false;
-} // end namespace fs
+ // Try again with larger buffer.
+ } while (Size > Buf.capacity());
+ Buf.set_size(Size);
+
+ return !windows::UTF16ToUTF8(Buf.data(), Size, Res);
+}
+
+static bool getTempDirEnvVar(SmallVectorImpl<char> &Res) {
+ const wchar_t *EnvironmentVariables[] = {L"TMP", L"TEMP", L"USERPROFILE"};
+ for (auto *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 var.
+ // This matches GetTempPath logic to some degree. GetTempPath is not used
+ // directly as it cannot handle evn var longer than 130 chars on Windows 7
+ // (fixed on Windows 8).
+ if (getTempDirEnvVar(Result)) {
+ assert(!Result.empty() && "Unexpected empty path");
+ native(Result); // Some Unix-like shells use Unix path separator in $TMP.
+ fs::make_absolute(Result); // Make it absolute if not already.
+ 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) {
+ if (!utf8.empty()) {
+ int len = ::MultiByteToWideChar(CP_UTF8, MB_ERR_INVALID_CHARS, utf8.begin(),
+ utf8.size(), utf16.begin(), 0);
+
+ if (len == 0)
+ return mapWindowsError(::GetLastError());
+
+ utf16.reserve(len + 1);
+ utf16.set_size(len);
+
+ len = ::MultiByteToWideChar(CP_UTF8, MB_ERR_INVALID_CHARS, utf8.begin(),
+ utf8.size(), utf16.begin(), utf16.size());
+
+ if (len == 0)
+ return mapWindowsError(::GetLastError());
+ }
+
+ // Make utf16 null terminated.
+ utf16.push_back(0);
+ utf16.pop_back();
+
+ return std::error_code();
+}
+
+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(codepage, 0, utf16, utf16_len, utf8.begin(),
+ 0, NULL, NULL);
+
+ if (len == 0)
+ return mapWindowsError(::GetLastError());
+
+ utf8.reserve(len);
+ utf8.set_size(len);
+
+ // Now do the actual conversion.
+ len = ::WideCharToMultiByte(codepage, 0, utf16, utf16_len, utf8.data(),
+ utf8.size(), NULL, NULL);
+
+ if (len == 0)
+ return mapWindowsError(::GetLastError());
+ }
+
+ // Make utf8 null terminated.
+ utf8.push_back(0);
+ utf8.pop_back();
+
+ 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