//===----------------------------------------------------------------------===//
#include "Win32.h"
-#include <fstream>
#include <malloc.h>
+// 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] == '\\')
// and followed by something.
size_t len = path.size();
size_t pos = path.rfind(':',len);
+ size_t rootslash = 0;
if (pos != std::string::npos) {
if (pos != 1 || !isalpha(path[0]) || len < 3)
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);
+ if (rootslash == std::string::npos)
+ rootslash = 0;
}
// Check for illegal characters.
!= std::string::npos)
return false;
- // A file or directory name may not end in a period.
- if (path[len-1] == '.')
- return false;
- if (len >= 2 && path[len-2] == '.' && path[len-1] == '/')
- return false;
+ // Remove trailing slash, unless it's a root slash.
+ if (len > rootslash+1 && path[len-1] == '/')
+ path.erase(--len);
- // A file or directory name may not end in a space.
- if (path[len-1] == ' ')
- return false;
- if (len >= 2 && path[len-2] == ' ' && path[len-1] == '/')
- return false;
+ // Check each component for legality.
+ for (pos = 0; pos < len; ++pos) {
+ // A component may not end in a space.
+ if (path[pos] == ' ') {
+ if (path[pos+1] == '/' || path[pos+1] == '\0')
+ return false;
+ }
+
+ // A component may not end in a period.
+ if (path[pos] == '.') {
+ if (path[pos+1] == '/' || path[pos+1] == '\0') {
+ // Unless it is the pseudo-directory "."...
+ if (pos == 0 || path[pos-1] == '/' || path[pos-1] == ':')
+ return true;
+ // or "..".
+ if (pos > 0 && path[pos-1] == '.') {
+ if (pos == 1 || path[pos-2] == '/' || path[pos-2] == ':')
+ return true;
+ }
+ return false;
+ }
+ }
+ }
return true;
}
throw std::string("Can't determine temporary directory");
Path result;
- result.setDirectory(pathname);
+ result.set(pathname);
// Append a subdirectory passed on our process id so multiple LLVMs don't
// step on each other's toes.
- sprintf(pathname, "LLVM_%u", GetCurrentProcessId());
- result.appendDirectory(pathname);
+ sprintf(pathname, "LLVM_%u", unsigned(GetCurrentProcessId()));
+ result.appendComponent(pathname);
// If there's a directory left over from a previous LLVM execution that
// happened to have the same process id, get rid of it.
- result.destroyDirectory(true);
+ result.eraseFromDisk(true);
// And finally (re-)create the empty directory.
- result.createDirectory(false);
+ result.createDirectoryOnDisk(false);
TempDirectory = new Path(result);
return *TempDirectory;
}
Path
Path::GetRootDirectory() {
Path result;
- result.setDirectory("/");
+ result.set("C:/");
return result;
}
const char* at = path;
const char* delim = strchr(at, ';');
Path tmpPath;
- while( delim != 0 ) {
+ while (delim != 0) {
std::string tmp(at, size_t(delim-at));
- if (tmpPath.setDirectory(tmp))
- if (tmpPath.readable())
+ if (tmpPath.set(tmp))
+ if (tmpPath.canRead())
Paths.push_back(tmpPath);
at = delim + 1;
delim = strchr(at, ';');
}
+
if (*at != 0)
- if (tmpPath.setDirectory(std::string(at)))
- if (tmpPath.readable())
+ if (tmpPath.set(std::string(at)))
+ if (tmpPath.canRead())
Paths.push_back(tmpPath);
-
}
-void
+void
Path::GetSystemLibraryPaths(std::vector<sys::Path>& Paths) {
-#ifdef LTDL_SHLIBPATH_VAR
- char* env_var = getenv(LTDL_SHLIBPATH_VAR);
- if (env_var != 0) {
- getPathList(env_var,Paths);
- }
-#endif
- // FIXME: Should this look at LD_LIBRARY_PATH too?
- 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
if (env_var != 0) {
getPathList(env_var,Paths);
}
-#ifdef LLVMGCCDIR
- {
- Path tmpPath(std::string(LLVMGCCDIR) + "bytecode-libs/");
- if (tmpPath.readable())
- Paths.push_back(tmpPath);
- }
-#endif
#ifdef LLVM_LIBDIR
{
Path tmpPath;
- if (tmpPath.setDirectory(LLVM_LIBDIR))
- if (tmpPath.readable())
+ if (tmpPath.set(LLVM_LIBDIR))
+ if (tmpPath.canRead())
Paths.push_back(tmpPath);
}
#endif
Path
Path::GetLLVMDefaultConfigDir() {
- return Path("/etc/llvm/");
-}
-
-Path
-Path::GetLLVMConfigDir() {
- return GetLLVMDefaultConfigDir();
+ // TODO: this isn't going to fly on Windows
+ return Path("/etc/llvm");
}
Path
Path::GetUserHomeDirectory() {
+ // TODO: Typical Windows setup doesn't define HOME.
const char* home = getenv("HOME");
if (home) {
Path result;
- if (result.setDirectory(home))
+ if (result.set(home))
return result;
}
return GetRootDirectory();
bool
Path::isFile() const {
- return (isValid() && path[path.length()-1] != '/');
+ WIN32_FILE_ATTRIBUTE_DATA fi;
+ BOOL rc = GetFileAttributesEx(path.c_str(), GetFileExInfoStandard, &fi);
+ if (rc)
+ return !(fi.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY);
+ else if (GetLastError() != ERROR_FILE_NOT_FOUND) {
+ ThrowError("isFile(): " + std::string(path) + ": Can't get status: ");
+ }
+ return false;
}
bool
Path::isDirectory() const {
- return (isValid() && path[path.length()-1] == '/');
+ WIN32_FILE_ATTRIBUTE_DATA fi;
+ BOOL rc = GetFileAttributesEx(path.c_str(), GetFileExInfoStandard, &fi);
+ if (rc)
+ return fi.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY;
+ else if (GetLastError() != ERROR_FILE_NOT_FOUND)
+ ThrowError("isDirectory(): " + std::string(path) + ": Can't get status: ");
+ return false;
+}
+
+bool
+Path::isHidden() const {
+ WIN32_FILE_ATTRIBUTE_DATA fi;
+ BOOL rc = GetFileAttributesEx(path.c_str(), GetFileExInfoStandard, &fi);
+ if (rc)
+ return fi.dwFileAttributes & FILE_ATTRIBUTE_HIDDEN;
+ else if (GetLastError() != ERROR_FILE_NOT_FOUND)
+ ThrowError("isHidden(): " + std::string(path) + ": Can't get status: ");
+ return false;
+}
+
+bool
+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 {
- size_t len = Magic.size();
- char *buf = reinterpret_cast<char *>(_alloca(len+1));
- std::ifstream f(path.c_str());
- f.read(buf, len);
- buf[len] = '\0';
- return Magic == buf;
+ std::string actualMagic;
+ if (getMagicNumber(actualMagic, Magic.size()))
+ return Magic == actualMagic;
+ return false;
}
-bool
+bool
Path::isBytecodeFile() const {
- char buffer[ 4];
- buffer[0] = 0;
- std::ifstream f(path.c_str());
- f.read(buffer, 4);
- if (f.bad())
- ThrowErrno("can't read file signature");
- return 0 == memcmp(buffer,"llvc",4) || 0 == memcmp(buffer,"llvm",4);
+ if (!isFile())
+ return false;
+ std::string actualMagic;
+ if (!getMagicNumber(actualMagic, 4))
+ return false;
+ return actualMagic == "llvc" || actualMagic == "llvm";
}
bool
}
bool
-Path::readable() const {
+Path::canRead() const {
// FIXME: take security attributes into account.
DWORD attr = GetFileAttributes(path.c_str());
return attr != INVALID_FILE_ATTRIBUTES;
}
bool
-Path::writable() const {
+Path::canWrite() const {
// FIXME: take security attributes into account.
DWORD attr = GetFileAttributes(path.c_str());
return (attr != INVALID_FILE_ATTRIBUTES) && !(attr & FILE_ATTRIBUTE_READONLY);
}
bool
-Path::executable() const {
+Path::canExecute() const {
// FIXME: take security attributes into account.
DWORD attr = GetFileAttributes(path.c_str());
return attr != INVALID_FILE_ATTRIBUTES;
if (pos == std::string::npos)
return path;
- // If the last character is a slash
- if (pos == path.length()-1) {
- // Find the second to last slash
- size_t pos2 = path.rfind('/', pos-1);
- if (pos2 == std::string::npos)
- return path.substr(0,pos);
- else
- return path.substr(pos2+1,pos-pos2-1);
- }
+ // If the last character is a slash, we have a root directory
+ if (pos == path.length()-1)
+ return path;
+
// Return everything after the last slash
return path.substr(pos+1);
}
Path::getStatusInfo(StatusInfo& info) const {
WIN32_FILE_ATTRIBUTE_DATA fi;
if (!GetFileAttributesEx(path.c_str(), GetFileExInfoStandard, &fi))
- ThrowError(std::string(path) + ": Can't get status: ");
+ ThrowError("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 = 0777; // Not applicable to Windows, so...
+ info.mode = fi.dwFileAttributes & FILE_ATTRIBUTE_READONLY ? 0555 : 0777;
info.user = 9999; // Not applicable to Windows, so...
info.group = 9999; // Not applicable to Windows, so...
info.modTime.fromWin32Time(ft);
info.isDir = fi.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY;
- if (info.isDir && path[path.length() - 1] != '/')
- path += '/';
- else if (!info.isDir && path[path.length() - 1] == '/')
- path.erase(path.length() - 1);
}
-void Path::makeReadable() {
+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() {
// All files are readable on Windows (ignoring security attributes).
}
-void Path::makeWriteable() {
+void Path::makeWriteableOnDisk() {
DWORD attr = GetFileAttributes(path.c_str());
// If it doesn't exist, we're done.
}
}
-void Path::makeExecutable() {
+void Path::makeExecutableOnDisk() {
// All files are executable on Windows (ignoring security attributes).
}
bool
-Path::setDirectory(const std::string& a_path) {
- if (a_path.size() == 0)
- return false;
- Path save(*this);
- path = a_path;
- FlipBackSlashes(path);
- size_t last = a_path.size() -1;
- if (a_path[last] != '/')
- path += '/';
- if (!isValid()) {
- path = save.path;
+Path::getDirectoryContents(std::set<Path>& result) const {
+ if (!isDirectory())
return false;
+
+ result.clear();
+ WIN32_FIND_DATA fd;
+ std::string searchpath = path;
+ if (path.size() == 0 || searchpath[path.size()-1] == '/')
+ 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: ");
+ }
+
+ do {
+ if (fd.cFileName[0] == '.')
+ continue;
+ Path aPath(path);
+ aPath.appendComponent(&fd.cFileName[0]);
+ result.insert(aPath);
+ } while (FindNextFile(h, &fd));
+
+ DWORD err = GetLastError();
+ FindClose(h);
+ if (err != ERROR_NO_MORE_FILES) {
+ SetLastError(err);
+ ThrowError(path + ": Can't read directory: ");
}
return true;
}
bool
-Path::setFile(const std::string& a_path) {
+Path::set(const std::string& a_path) {
if (a_path.size() == 0)
return false;
- Path save(*this);
+ std::string save(path);
path = a_path;
FlipBackSlashes(path);
- size_t last = a_path.size() - 1;
- while (last > 0 && a_path[last] == '/')
- last--;
- path.erase(last+1);
if (!isValid()) {
- path = save.path;
+ path = save;
return false;
}
return true;
}
bool
-Path::appendDirectory(const std::string& dir) {
- if (isFile())
+Path::appendComponent(const std::string& name) {
+ if (name.empty())
return false;
- Path save(*this);
- path += dir;
- path += "/";
+ std::string save(path);
+ if (!path.empty()) {
+ size_t last = path.size() - 1;
+ if (path[last] != '/')
+ path += '/';
+ }
+ path += name;
if (!isValid()) {
- path = save.path;
+ path = save;
return false;
}
return true;
}
bool
-Path::elideDirectory() {
- if (isFile())
- return false;
+Path::eraseComponent() {
size_t slashpos = path.rfind('/',path.size());
- if (slashpos == 0 || slashpos == std::string::npos)
- return false;
- if (slashpos == path.size() - 1)
- slashpos = path.rfind('/',slashpos-1);
- if (slashpos == std::string::npos)
+ if (slashpos == path.size() - 1 || slashpos == std::string::npos)
return false;
+ std::string save(path);
path.erase(slashpos);
- return true;
-}
-
-bool
-Path::appendFile(const std::string& file) {
- if (!isDirectory())
- return false;
- Path save(*this);
- path += file;
if (!isValid()) {
- path = save.path;
+ path = save;
return false;
}
return true;
}
-bool
-Path::elideFile() {
- if (isDirectory())
- return false;
- size_t slashpos = path.rfind('/',path.size());
- if (slashpos == std::string::npos)
- return false;
- path.erase(slashpos+1);
- return true;
-}
-
bool
Path::appendSuffix(const std::string& suffix) {
- if (isDirectory())
- return false;
- Path save(*this);
+ std::string save(path);
path.append(".");
path.append(suffix);
if (!isValid()) {
- path = save.path;
+ path = save;
return false;
}
return true;
}
bool
-Path::elideSuffix() {
- if (isDirectory()) return false;
+Path::eraseSuffix() {
size_t dotpos = path.rfind('.',path.size());
size_t slashpos = path.rfind('/',path.size());
- if (slashpos != std::string::npos && dotpos != std::string::npos &&
- dotpos > slashpos) {
- path.erase(dotpos, path.size()-dotpos);
- return true;
+ if (dotpos != std::string::npos) {
+ if (slashpos == std::string::npos || dotpos > slashpos+1) {
+ std::string save(path);
+ path.erase(dotpos, path.size()-dotpos);
+ if (!isValid()) {
+ path = save;
+ return false;
+ }
+ return true;
+ }
}
return false;
}
-
bool
-Path::createDirectory( bool create_parents) {
- // Make sure we're dealing with a directory
- if (!isDirectory()) return false;
-
+Path::createDirectoryOnDisk(bool create_parents) {
// Get a writeable copy of the path name
- char *pathname = reinterpret_cast<char *>(_alloca(path.length()+1));
- path.copy(pathname,path.length());
- pathname[path.length()] = 0;
+ 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] = '/';
+ pathname[++len] = 0;
+ }
// Determine starting point for initial / search.
char *next = pathname;
}
} else {
// Drop trailing slash.
- pathname[path.size()-1] = 0;
+ pathname[len-1] = 0;
if (!CreateDirectory(pathname, NULL)) {
ThrowError(std::string(pathname) + ": Can't create directory: ");
}
}
bool
-Path::createFile() {
- // Make sure we're dealing with a file
- if (!isFile()) return false;
-
+Path::createFileOnDisk() {
// 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(std::string(path.c_str()) + ": Can't create file: ");
+ ThrowError(path + ": Can't create file: ");
CloseHandle(h);
return true;
}
bool
-Path::destroyDirectory(bool remove_contents) {
- // Make sure we're dealing with a directory
- if (!isDirectory()) return false;
+Path::eraseFromDisk(bool remove_contents, std::string *ErrStr) const {
+ if (isFile()) {
+ DWORD attr = GetFileAttributes(path.c_str());
- // If it doesn't exist, we're done.
- if (!exists()) return true;
+ // If it doesn't exist, we're done.
+ if (attr == INVALID_FILE_ATTRIBUTES)
+ return false;
- char *pathname = reinterpret_cast<char *>(_alloca(path.length()+1));
- path.copy(pathname,path.length()+1);
- int lastchar = path.length() - 1 ;
- if (pathname[lastchar] == '/')
- pathname[lastchar] = 0;
+ // 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))
+ return GetError(path + ": Can't destroy file: ", ErrStr);
+ }
- if (remove_contents) {
- // Recursively descend the directory to remove its content
- // FIXME: The correct way of doing this on Windows isn't pretty...
- // but this may work if unix-like utils are present.
- std::string cmd("rm -rf ");
- cmd += path;
- system(cmd.c_str());
- } else {
- // Otherwise, try to just remove the one directory
+ if (!DeleteFile(path.c_str()))
+ ThrowError(path + ": Can't destroy file: ");
+ return true;
+ } else if (isDirectory()) {
+ // If it doesn't exist, we're done.
+ if (!exists())
+ return false;
+
+ char *pathname = reinterpret_cast<char *>(_alloca(path.length()+3));
+ int lastchar = path.length() - 1 ;
+ path.copy(pathname, lastchar+1);
+
+ // Make path end with '/*'.
+ if (pathname[lastchar] != '/')
+ pathname[++lastchar] = '/';
+ pathname[lastchar+1] = '*';
+ pathname[lastchar+2] = 0;
+
+ if (remove_contents) {
+ WIN32_FIND_DATA fd;
+ HANDLE h = FindFirstFile(pathname, &fd);
+
+ // It's a bad idea to alter the contents of a directory while enumerating
+ // its contents. So build a list of its contents first, then destroy them.
+
+ if (h != INVALID_HANDLE_VALUE) {
+ std::vector<Path> list;
+
+ do {
+ if (strcmp(fd.cFileName, ".") == 0)
+ continue;
+ if (strcmp(fd.cFileName, "..") == 0)
+ continue;
+
+ Path aPath(path);
+ aPath.appendComponent(&fd.cFileName[0]);
+ list.push_back(aPath);
+ } while (FindNextFile(h, &fd));
+
+ DWORD err = GetLastError();
+ FindClose(h);
+ if (err != ERROR_NO_MORE_FILES) {
+ SetLastError(err);
+ return GetError(path + ": Can't read directory: ", ErrStr);
+ }
+
+ 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)
+ return GetError(path + ": Can't read directory: ", ErrStr);
+ }
+ }
+
+ pathname[lastchar] = 0;
if (!RemoveDirectory(pathname))
- ThrowError(std::string(pathname) + ": Can't destroy directory: ");
+ return GetError(std::string(pathname) + ": Can't destroy directory: ",
+ ErrStr);
+ return false;
+ } else {
+ // 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);
+
+ HANDLE h = CreateFile(path.c_str(),
+ GENERIC_READ,
+ FILE_SHARE_READ,
+ NULL,
+ OPEN_EXISTING,
+ FILE_ATTRIBUTE_NORMAL,
+ NULL);
+ if (h == INVALID_HANDLE_VALUE)
+ return false;
+
+ DWORD nRead = 0;
+ BOOL ret = ReadFile(h, buf, len, &nRead, NULL);
+ CloseHandle(h);
+
+ if (!ret || nRead != len)
+ return false;
+
+ buf[len] = '\0';
+ Magic = buf;
+ return true;
+}
+
+bool
+Path::renamePathOnDisk(const Path& newName) {
+ if (!MoveFileEx(path.c_str(), newName.c_str(), MOVEFILE_REPLACE_EXISTING))
+ ThrowError("Can't move '" + path +
+ "' to '" + newName.path + "': ");
return true;
}
bool
-Path::destroyFile() {
+Path::setStatusInfoOnDisk(const StatusInfo& si) const {
+ // FIXME: should work on directories also.
if (!isFile()) return false;
- DWORD attr = GetFileAttributes(path.c_str());
+ HANDLE h = CreateFile(path.c_str(),
+ FILE_READ_ATTRIBUTES | FILE_WRITE_ATTRIBUTES,
+ FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
+ NULL,
+ OPEN_EXISTING,
+ FILE_ATTRIBUTE_NORMAL,
+ NULL);
+ if (h == INVALID_HANDLE_VALUE)
+ return false;
- // If it doesn't exist, we're done.
- if (attr == INVALID_FILE_ATTRIBUTES)
- return true;
+ BY_HANDLE_FILE_INFORMATION bhfi;
+ if (!GetFileInformationByHandle(h, &bhfi)) {
+ DWORD err = GetLastError();
+ CloseHandle(h);
+ SetLastError(err);
+ ThrowError(path + ": GetFileInformationByHandle: ");
+ }
- // 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(std::string(path.c_str()) + ": Can't destroy file: ");
+ FILETIME ft;
+ (uint64_t&)ft = si.modTime.toWin32Time();
+ BOOL ret = SetFileTime(h, NULL, &ft, &ft);
+ DWORD err = GetLastError();
+ CloseHandle(h);
+ if (!ret) {
+ SetLastError(err);
+ ThrowError(path + ": SetFileTime: ");
+ }
+
+ // Best we can do with Unix permission bits is to interpret the owner
+ // writable bit.
+ if (si.mode & 0200) {
+ if (bhfi.dwFileAttributes & FILE_ATTRIBUTE_READONLY) {
+ if (!SetFileAttributes(path.c_str(),
+ bhfi.dwFileAttributes & ~FILE_ATTRIBUTE_READONLY))
+ ThrowError(path + ": SetFileAttributes: ");
+ }
+ } else {
+ if (!(bhfi.dwFileAttributes & FILE_ATTRIBUTE_READONLY)) {
+ if (!SetFileAttributes(path.c_str(),
+ bhfi.dwFileAttributes | FILE_ATTRIBUTE_READONLY))
+ ThrowError(path + ": SetFileAttributes: ");
+ }
}
- if (!DeleteFile(path.c_str()))
- ThrowError(std::string(path.c_str()) + ": Can't destroy file: ");
return true;
}
+void
+CopyFile(const sys::Path &Dest, const sys::Path &Src) {
+ // 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() +
+ "' to '" + Dest.toString() + "': ");
}
+
+void
+Path::makeUnique(bool reuse_current) {
+ if (reuse_current && !exists())
+ return; // 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. 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);
+ if (++FCounter > 999999)
+ FCounter = 0;
+ path = FNBuffer;
+ } while (exists());
}
-// vim: sw=2 smartindent smarttab tw=80 autoindent expandtab
+bool
+Path::createTemporaryFileOnDisk(bool reuse_current) {
+ // Make this into a unique file name
+ makeUnique(reuse_current);
+ // 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;
+
+ CloseHandle(h);
+ return true;
+}
+
+}
+}
projects / oota-llvm.git / blobdiff