// We need to undo a macro defined in Windows.h, otherwise we won't compile:
#undef CopyFile
+// Windows happily accepts either forward or backward slashes, though any path
+// returned by a Win32 API will have backward slashes. As LLVM code basically
+// assumes forward slashes are used, backward slashs are converted where they
+// can be introduced into a path.
+//
+// Another invariant is that a path ends with a slash if and only if the path
+// is a root directory. Any other use of a trailing slash is stripped. Unlike
+// in Unix, Windows has a rather complicated notion of a root path and this
+// invariant helps simply the code.
+
static void FlipBackSlashes(std::string& s) {
for (size_t i = 0; i < s.size(); i++)
if (s[i] == '\\')
return false;
rootslash = 2;
}
-
+
// Look for a UNC path, and if found adjust our notion of the root slash.
if (len > 3 && path[0] == '/' && path[1] == '/') {
rootslash = path.find('/', 2);
"\027\030\031\032\033\034\035\036\037")
!= std::string::npos)
return false;
-
+
// Remove trailing slash, unless it's a root slash.
if (len > rootslash+1 && path[len-1] == '/')
path.erase(--len);
static Path *TempDirectory = NULL;
Path
-Path::GetTemporaryDirectory() {
+Path::GetTemporaryDirectory(std::string* ErrMsg) {
if (TempDirectory)
return *TempDirectory;
char pathname[MAX_PATH];
- if (!GetTempPath(MAX_PATH, pathname))
- throw std::string("Can't determine temporary directory");
+ if (!GetTempPath(MAX_PATH, pathname)) {
+ if (ErrMsg)
+ *ErrMsg = "Can't determine temporary directory";
+ return Path();
+ }
Path result;
result.set(pathname);
// Append a subdirectory passed on our process id so multiple LLVMs don't
// step on each other's toes.
+#ifdef __MINGW32__
+ // Mingw's Win32 header files are broken.
+ sprintf(pathname, "LLVM_%u", unsigned(GetCurrentProcessId()));
+#else
sprintf(pathname, "LLVM_%u", GetCurrentProcessId());
+#endif
result.appendComponent(pathname);
// If there's a directory left over from a previous LLVM execution that
return *TempDirectory;
}
-Path::Path(const std::string& unverified_path)
- : path(unverified_path)
-{
- FlipBackSlashes(path);
- if (unverified_path.empty())
- return;
- if (this->isValid())
- return;
- // oops, not valid.
- path.clear();
- throw std::string(unverified_path + ": path is not valid");
-}
-
// FIXME: the following set of functions don't map to Windows very well.
Path
Path::GetRootDirectory() {
Path result;
- result.set("C:\\");
+ result.set("C:/");
return result;
}
at = delim + 1;
delim = strchr(at, ';');
}
-
+
if (*at != 0)
if (tmpPath.set(std::string(at)))
if (tmpPath.canRead())
Paths.push_back(tmpPath);
}
-void
+void
Path::GetSystemLibraryPaths(std::vector<sys::Path>& Paths) {
- Paths.push_back(sys::Path("C:\\WINDOWS\\SYSTEM32"));
- Paths.push_back(sys::Path("C:\\WINDOWS"));
+ Paths.push_back(sys::Path("C:/WINDOWS/SYSTEM32"));
+ Paths.push_back(sys::Path("C:/WINDOWS"));
}
void
}
// FIXME: the above set of functions don't map to Windows very well.
-bool
-Path::isFile() const {
- return !isDirectory();
-}
-
-bool
-Path::isDirectory() const {
- WIN32_FILE_ATTRIBUTE_DATA fi;
- if (!GetFileAttributesEx(path.c_str(), GetFileExInfoStandard, &fi))
- ThrowError(std::string(path) + ": Can't get status: ");
- return fi.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY;
-}
bool
-Path::isHidden() const {
- WIN32_FILE_ATTRIBUTE_DATA fi;
- if (!GetFileAttributesEx(path.c_str(), GetFileExInfoStandard, &fi))
- ThrowError(std::string(path) + ": Can't get status: ");
- return fi.dwFileAttributes & FILE_ATTRIBUTE_HIDDEN;
+Path::isRootDirectory() const {
+ size_t len = path.size();
+ return len > 0 && path[len-1] == '/';
}
std::string
else
slash++;
- return path.substr(slash, path.rfind('.'));
+ size_t dot = path.rfind('.');
+ if (dot == std::string::npos || dot < slash)
+ return path.substr(slash);
+ else
+ return path.substr(slash, dot - slash);
}
bool Path::hasMagicNumber(const std::string &Magic) const {
return false;
}
-bool
+bool
Path::isBytecodeFile() const {
std::string actualMagic;
if (!getMagicNumber(actualMagic, 4))
return path.substr(pos+1);
}
-void
-Path::getStatusInfo(StatusInfo& info) const {
+bool
+Path::getFileStatus(FileStatus &info, std::string *ErrStr) const {
WIN32_FILE_ATTRIBUTE_DATA fi;
if (!GetFileAttributesEx(path.c_str(), GetFileExInfoStandard, &fi))
- ThrowError(std::string(path) + ": Can't get status: ");
+ return MakeErrMsg(ErrStr, "getStatusInfo():" + std::string(path) +
+ ": Can't get status: ");
info.fileSize = fi.nFileSizeHigh;
- info.fileSize <<= 32;
+ info.fileSize <<= sizeof(fi.nFileSizeHigh)*8;
info.fileSize += fi.nFileSizeLow;
info.mode = fi.dwFileAttributes & FILE_ATTRIBUTE_READONLY ? 0555 : 0777;
info.modTime.fromWin32Time(ft);
info.isDir = fi.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY;
+ return false;
}
-static bool AddPermissionBits(const std::string& Filename, int bits) {
- DWORD attr = GetFileAttributes(Filename.c_str());
-
- // If it doesn't exist, we're done.
- if (attr == INVALID_FILE_ATTRIBUTES)
- return false;
-
- // The best we can do to interpret Unix permission bits is to use
- // the owner writable bit.
- if ((attr & FILE_ATTRIBUTE_READONLY) && (bits & 0200)) {
- if (!SetFileAttributes(Filename.c_str(), attr & ~FILE_ATTRIBUTE_READONLY))
- ThrowError(Filename + ": SetFileAttributes: ");
- }
- return true;
-}
-
-void Path::makeReadableOnDisk() {
+bool Path::makeReadableOnDisk(std::string* ErrMsg) {
// All files are readable on Windows (ignoring security attributes).
+ return false;
}
-void Path::makeWriteableOnDisk() {
+bool Path::makeWriteableOnDisk(std::string* ErrMsg) {
DWORD attr = GetFileAttributes(path.c_str());
// If it doesn't exist, we're done.
if (attr == INVALID_FILE_ATTRIBUTES)
- return;
+ return false;
if (attr & FILE_ATTRIBUTE_READONLY) {
- if (!SetFileAttributes(path.c_str(), attr & ~FILE_ATTRIBUTE_READONLY))
- ThrowError(std::string(path) + ": Can't make file writable: ");
+ if (!SetFileAttributes(path.c_str(), attr & ~FILE_ATTRIBUTE_READONLY)) {
+ MakeErrMsg(ErrMsg, std::string(path) + ": Can't make file writable: ");
+ return true;
+ }
}
+ return false;
}
-void Path::makeExecutableOnDisk() {
+bool Path::makeExecutableOnDisk(std::string* ErrMsg) {
// All files are executable on Windows (ignoring security attributes).
+ return false;
}
bool
-Path::getDirectoryContents(std::set<Path>& result) const {
- if (!isDirectory())
- return false;
+Path::getDirectoryContents(std::set<Path>& result, std::string* ErrMsg) const {
+ FileStatus Status;
+ if (getFileStatus(Status, ErrMsg))
+ return true;
+
+ if (!Status.isDir) {
+ MakeErrMsg(ErrMsg, path + ": not a directory");
+ return true;
+ }
result.clear();
WIN32_FIND_DATA fd;
std::string searchpath = path;
if (path.size() == 0 || searchpath[path.size()-1] == '/')
- searchpath += "*";
+ searchpath += "*";
else
searchpath += "/*";
-
-
+
HANDLE h = FindFirstFile(searchpath.c_str(), &fd);
if (h == INVALID_HANDLE_VALUE) {
if (GetLastError() == ERROR_FILE_NOT_FOUND)
return true; // not really an error, now is it?
- ThrowError(path + ": Can't read directory: ");
+ MakeErrMsg(ErrMsg, path + ": Can't read directory: ");
+ return true;
}
do {
FindClose(h);
if (err != ERROR_NO_MORE_FILES) {
SetLastError(err);
- ThrowError(path + ": Can't read directory: ");
+ MakeErrMsg(ErrMsg, path + ": Can't read directory: ");
+ return true;
}
- return true;
+ return false;
}
bool
std::string save(path);
if (!path.empty()) {
size_t last = path.size() - 1;
- if (path[last] != '/')
+ if (path[last] != '/')
path += '/';
}
path += name;
size_t slashpos = path.rfind('/',path.size());
if (slashpos == path.size() - 1 || slashpos == std::string::npos)
return false;
+ std::string save(path);
path.erase(slashpos);
+ if (!isValid()) {
+ path = save;
+ return false;
+ }
return true;
}
size_t dotpos = path.rfind('.',path.size());
size_t slashpos = path.rfind('/',path.size());
if (dotpos != std::string::npos) {
- if (slashpos == std::string::npos || dotpos > slashpos) {
+ if (slashpos == std::string::npos || dotpos > slashpos+1) {
+ std::string save(path);
path.erase(dotpos, path.size()-dotpos);
- return true;
+ if (!isValid()) {
+ path = save;
+ return false;
+ }
+ return true;
}
}
return false;
}
+inline bool PathMsg(std::string* ErrMsg, const char* pathname, const char*msg) {
+ if (ErrMsg)
+ *ErrMsg = std::string(pathname) + ": " + std::string(msg);
+ return true;
+}
+
bool
-Path::createDirectoryOnDisk(bool create_parents) {
+Path::createDirectoryOnDisk(bool create_parents, std::string* ErrMsg) {
// Get a writeable copy of the path name
size_t len = path.length();
char *pathname = reinterpret_cast<char *>(_alloca(len+2));
path.copy(pathname, len);
pathname[len] = 0;
-
+
// Make sure it ends with a slash.
if (len == 0 || pathname[len - 1] != '/') {
pathname[len] = '/';
// Skip host name.
next = strchr(pathname+2, '/');
if (next == NULL)
- throw std::string(pathname) + ": badly formed remote directory";
+ return PathMsg(ErrMsg, pathname, "badly formed remote directory");
+
// Skip share name.
next = strchr(next+1, '/');
if (next == NULL)
- throw std::string(pathname) + ": badly formed remote directory";
+ return PathMsg(ErrMsg, pathname,"badly formed remote directory");
+
next++;
if (*next == 0)
- throw std::string(pathname) + ": badly formed remote directory";
+ return PathMsg(ErrMsg, pathname, "badly formed remote directory");
+
} else {
if (pathname[1] == ':')
next += 2; // skip drive letter
next = strchr(next, '/');
*next = 0;
if (!CreateDirectory(pathname, NULL))
- ThrowError(std::string(pathname) + ": Can't create directory: ");
+ return MakeErrMsg(ErrMsg,
+ std::string(pathname) + ": Can't create directory: ");
*next++ = '/';
}
} else {
// Drop trailing slash.
pathname[len-1] = 0;
if (!CreateDirectory(pathname, NULL)) {
- ThrowError(std::string(pathname) + ": Can't create directory: ");
+ return MakeErrMsg(ErrMsg, std::string(pathname) + ": Can't create directory: ");
}
}
- return true;
+ return false;
}
bool
-Path::createFileOnDisk() {
+Path::createFileOnDisk(std::string* ErrMsg) {
// Create the file
HANDLE h = CreateFile(path.c_str(), GENERIC_WRITE, 0, NULL, CREATE_NEW,
FILE_ATTRIBUTE_NORMAL, NULL);
if (h == INVALID_HANDLE_VALUE)
- ThrowError(path + ": Can't create file: ");
+ return MakeErrMsg(ErrMsg, path + ": Can't create file: ");
CloseHandle(h);
- return true;
+ return false;
}
bool
-Path::eraseFromDisk(bool remove_contents) const {
- if (isFile()) {
+Path::eraseFromDisk(bool remove_contents, std::string *ErrStr) const {
+ FileStatus Status;
+ if (getFileStatus(Status, ErrStr))
+ return false;
+
+ if (Status.isFile) {
DWORD attr = GetFileAttributes(path.c_str());
// If it doesn't exist, we're done.
if (attr == INVALID_FILE_ATTRIBUTES)
- return true;
+ return false;
// Read-only files cannot be deleted on Windows. Must remove the read-only
// attribute first.
if (attr & FILE_ATTRIBUTE_READONLY) {
if (!SetFileAttributes(path.c_str(), attr & ~FILE_ATTRIBUTE_READONLY))
- ThrowError(path + ": Can't destroy file: ");
+ return MakeErrMsg(ErrStr, path + ": Can't destroy file: ");
}
if (!DeleteFile(path.c_str()))
- ThrowError(path + ": Can't destroy file: ");
- return true;
- } else /* isDirectory() */ {
+ return MakeErrMsg(ErrStr, path + ": Can't destroy file: ");
+ return false;
+ } else if (Status.isDir) {
// If it doesn't exist, we're done.
- if (!exists())
- return true;
+ if (!exists())
+ return false;
char *pathname = reinterpret_cast<char *>(_alloca(path.length()+3));
int lastchar = path.length() - 1 ;
if (strcmp(fd.cFileName, "..") == 0)
continue;
- Path aPath(path);
- aPath.appendComponent(&fd.cFileName[0]);
+ Path aPath(path);
+ aPath.appendComponent(&fd.cFileName[0]);
list.push_back(aPath);
} while (FindNextFile(h, &fd));
FindClose(h);
if (err != ERROR_NO_MORE_FILES) {
SetLastError(err);
- ThrowError(path + ": Can't read directory: ");
+ return MakeErrMsg(ErrStr, path + ": Can't read directory: ");
}
- for (std::vector<Path>::iterator I = list.begin(); I != list.end();
+ for (std::vector<Path>::iterator I = list.begin(); I != list.end();
++I) {
Path &aPath = *I;
aPath.eraseFromDisk(true);
}
} else {
if (GetLastError() != ERROR_FILE_NOT_FOUND)
- ThrowError(path + ": Can't read directory: ");
+ return MakeErrMsg(ErrStr, path + ": Can't read directory: ");
}
}
pathname[lastchar] = 0;
if (!RemoveDirectory(pathname))
- ThrowError(std::string(pathname) + ": Can't destroy directory: ");
- return true;
- }
+ return MakeErrMsg(ErrStr,
+ std::string(pathname) + ": Can't destroy directory: ");
+ return false;
+ }
+ // It appears the path doesn't exist.
+ return true;
}
bool Path::getMagicNumber(std::string& Magic, unsigned len) const {
- if (!isFile())
- return false;
assert(len < 1024 && "Request for magic string too long");
char* buf = (char*) alloca(1 + len);
}
bool
-Path::renamePathOnDisk(const Path& newName) {
- if (!MoveFile(path.c_str(), newName.c_str()))
- ThrowError("Can't move '" + path +
- "' to '" + newName.path + "': ");
+Path::renamePathOnDisk(const Path& newName, std::string* ErrMsg) {
+ if (!MoveFileEx(path.c_str(), newName.c_str(), MOVEFILE_REPLACE_EXISTING))
+ return MakeErrMsg(ErrMsg, "Can't move '" + path + "' to '" + newName.path
+ + "': ");
return true;
}
bool
-Path::setStatusInfoOnDisk(const StatusInfo& si) const {
- if (!isFile()) return false;
-
+Path::setStatusInfoOnDisk(const FileStatus &si, std::string *ErrMsg) const {
+ // FIXME: should work on directories also.
+ if (!si.isFile) {
+ return true;
+ }
+
HANDLE h = CreateFile(path.c_str(),
FILE_READ_ATTRIBUTES | FILE_WRITE_ATTRIBUTES,
FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
FILE_ATTRIBUTE_NORMAL,
NULL);
if (h == INVALID_HANDLE_VALUE)
- return false;
+ return true;
BY_HANDLE_FILE_INFORMATION bhfi;
if (!GetFileInformationByHandle(h, &bhfi)) {
DWORD err = GetLastError();
CloseHandle(h);
SetLastError(err);
- ThrowError(path + ": GetFileInformationByHandle: ");
+ return MakeErrMsg(ErrMsg, path + ": GetFileInformationByHandle: ");
}
FILETIME ft;
CloseHandle(h);
if (!ret) {
SetLastError(err);
- ThrowError(path + ": SetFileTime: ");
+ return MakeErrMsg(ErrMsg, path + ": SetFileTime: ");
}
// Best we can do with Unix permission bits is to interpret the owner
if (bhfi.dwFileAttributes & FILE_ATTRIBUTE_READONLY) {
if (!SetFileAttributes(path.c_str(),
bhfi.dwFileAttributes & ~FILE_ATTRIBUTE_READONLY))
- ThrowError(path + ": SetFileAttributes: ");
+ return MakeErrMsg(ErrMsg, path + ": SetFileAttributes: ");
}
} else {
if (!(bhfi.dwFileAttributes & FILE_ATTRIBUTE_READONLY)) {
if (!SetFileAttributes(path.c_str(),
bhfi.dwFileAttributes | FILE_ATTRIBUTE_READONLY))
- ThrowError(path + ": SetFileAttributes: ");
+ return MakeErrMsg(ErrMsg, path + ": SetFileAttributes: ");
}
}
- return true;
+ return false;
}
-void
-sys::CopyFile(const sys::Path &Dest, const sys::Path &Src) {
+bool
+CopyFile(const sys::Path &Dest, const sys::Path &Src, std::string* ErrMsg) {
// Can't use CopyFile macro defined in Windows.h because it would mess up the
// above line. We use the expansion it would have in a non-UNICODE build.
if (!::CopyFileA(Src.c_str(), Dest.c_str(), false))
- ThrowError("Can't copy '" + Src.toString() +
+ return MakeErrMsg(ErrMsg, "Can't copy '" + Src.toString() +
"' to '" + Dest.toString() + "': ");
+ return false;
}
-void
-Path::makeUnique(bool reuse_current) {
+bool
+Path::makeUnique(bool reuse_current, std::string* ErrMsg) {
if (reuse_current && !exists())
- return; // File doesn't exist already, just use it!
+ return false; // File doesn't exist already, just use it!
// Reserve space for -XXXXXX at the end.
char *FNBuffer = (char*) alloca(path.size()+8);
unsigned offset = path.size();
path.copy(FNBuffer, offset);
- // Find a numeric suffix that isn't used by an existing file.
+ // Find a numeric suffix that isn't used by an existing file. Assume there
+ // won't be more than 1 million files with the same prefix. Probably a safe
+ // bet.
static unsigned FCounter = 0;
do {
sprintf(FNBuffer+offset, "-%06u", FCounter);
FCounter = 0;
path = FNBuffer;
} while (exists());
+ return false;
}
bool
-Path::createTemporaryFileOnDisk(bool reuse_current) {
+Path::createTemporaryFileOnDisk(bool reuse_current, std::string* ErrMsg) {
// Make this into a unique file name
- makeUnique( reuse_current );
+ makeUnique(reuse_current, ErrMsg);
// Now go and create it
HANDLE h = CreateFile(path.c_str(), GENERIC_WRITE, 0, NULL, CREATE_NEW,
FILE_ATTRIBUTE_NORMAL, NULL);
if (h == INVALID_HANDLE_VALUE)
- return false;
+ return MakeErrMsg(ErrMsg, path + ": can't create file");
CloseHandle(h);
- return true;
+ return false;
}
}
}
-
-
projects / oota-llvm.git / blobdiff