// University of Illinois Open Source License. See LICENSE.TXT for details.
//
// Modified by Henrik Bach to comply with at least MinGW.
+// Ported to Win32 by Jeff Cohen.
//
//===----------------------------------------------------------------------===//
//
//=== is guaranteed to work on *all* Win32 variants.
//===----------------------------------------------------------------------===//
-#include <llvm/Config/config.h>
-#include <limits.h>
-#include <stdarg.h>
-#include <assert.h>
-#include <fcntl.h>
-#include <sys/stat.h>
-#include <llvm/System/Path.h>
+#include "Win32.h"
+#include <malloc.h>
-#include <windef.h>
-#include <winbase.h>
+// We need to undo a macro defined in Windows.h, otherwise we won't compile:
+#undef CopyFile
-#define MAXPATHLEN PATH_MAX
+// 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] == '\\')
+ s[i] = '/';
+}
namespace llvm {
namespace sys {
bool
-Path::is_valid() const {
+Path::isValid() const {
if (path.empty())
return false;
-/*hb: char pathname[MAXPATHLEN];
- if (0 == realpath(path.c_str(), pathname))
- if (errno != EACCES && errno != EIO && errno != ENOENT && errno !=
-ENOTDIR)
- return false;*/
+
+ // If there is a colon, it must be the second character, preceded by a letter
+ // 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.
+ if (path.find_first_of("\\<>\"|\001\002\003\004\005\006\007\010\011\012"
+ "\013\014\015\016\017\020\021\022\023\024\025\026"
+ "\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);
+
+ // 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;
}
+bool
+Path::isAbsolute() const {
+ switch (path.length()) {
+ case 0:
+ return false;
+ case 1:
+ case 2:
+ return path[0] == '/';
+ default:
+ return path[0] == '/' || (path[1] == ':' && path[2] == '/');
+ }
+}
+
+static Path *TempDirectory = NULL;
+
Path
-Path::GetTemporaryDirectory() {
- char pathname[MAXPATHLEN];
- if (0 == GetTempPath(MAXPATHLEN,pathname))
- ThrowError(std::string(pathname) + ": Can't create temporary directory");
- Path result;
- result.set_directory(pathname);
- assert(result.is_valid() && "GetTempPath didn't create a valid pathname!");
- return result;
-}
+Path::GetTemporaryDirectory(std::string* ErrMsg) {
+ if (TempDirectory)
+ return *TempDirectory;
+
+ char pathname[MAX_PATH];
+ if (!GetTempPath(MAX_PATH, pathname)) {
+ if (ErrMsg)
+ *ErrMsg = "Can't determine temporary directory";
+ return Path();
+ }
-Path::Path(std::string unverified_path)
- : path(unverified_path)
-{
- if (unverified_path.empty())
- return;
- if (this->is_valid())
- return;
- // oops, not valid.
- path.clear();
- ThrowError(unverified_path + ": path is not valid");
+ 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
+ // happened to have the same process id, get rid of it.
+ result.eraseFromDisk(true);
+
+ // And finally (re-)create the empty directory.
+ result.createDirectoryOnDisk(false);
+ TempDirectory = new Path(result);
+ return *TempDirectory;
}
+// FIXME: the following set of functions don't map to Windows very well.
Path
Path::GetRootDirectory() {
Path result;
- result.set_directory("/");
+ result.set("C:/");
return result;
}
-Path
-Path::GetSystemLibraryPath1() {
- return Path("/lib/");
+static void getPathList(const char*path, std::vector<sys::Path>& Paths) {
+ const char* at = path;
+ const char* delim = strchr(at, ';');
+ Path tmpPath;
+ while (delim != 0) {
+ std::string tmp(at, size_t(delim-at));
+ if (tmpPath.set(tmp))
+ if (tmpPath.canRead())
+ Paths.push_back(tmpPath);
+ at = delim + 1;
+ delim = strchr(at, ';');
+ }
+
+ if (*at != 0)
+ if (tmpPath.set(std::string(at)))
+ if (tmpPath.canRead())
+ Paths.push_back(tmpPath);
}
-Path
-Path::GetSystemLibraryPath2() {
- return Path("/usr/lib/");
+void
+Path::GetSystemLibraryPaths(std::vector<sys::Path>& Paths) {
+ Paths.push_back(sys::Path("C:/WINDOWS/SYSTEM32"));
+ Paths.push_back(sys::Path("C:/WINDOWS"));
}
-Path
-Path::GetLLVMDefaultConfigDir() {
- return Path("/etc/llvm/");
+void
+Path::GetBytecodeLibraryPaths(std::vector<sys::Path>& Paths) {
+ char * env_var = getenv("LLVM_LIB_SEARCH_PATH");
+ if (env_var != 0) {
+ getPathList(env_var,Paths);
+ }
+#ifdef LLVM_LIBDIR
+ {
+ Path tmpPath;
+ if (tmpPath.set(LLVM_LIBDIR))
+ if (tmpPath.canRead())
+ Paths.push_back(tmpPath);
+ }
+#endif
+ GetSystemLibraryPaths(Paths);
}
Path
-Path::GetLLVMConfigDir() {
- Path result;
- if (result.set_directory(LLVM_ETCDIR))
- return result;
- return GetLLVMDefaultConfigDir();
+Path::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.set_directory(home))
+ if (result.set(home))
return result;
}
return GetRootDirectory();
}
+// FIXME: the above set of functions don't map to Windows very well.
+
+
+bool
+Path::isRootDirectory() const {
+ size_t len = path.size();
+ return len > 0 && path[len-1] == '/';
+}
+
+std::string
+Path::getBasename() const {
+ // Find the last slash
+ size_t slash = path.rfind('/');
+ if (slash == std::string::npos)
+ slash = 0;
+ else
+ slash++;
+
+ 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 {
+ std::string actualMagic;
+ if (getMagicNumber(actualMagic, Magic.size()))
+ return Magic == actualMagic;
+ return false;
+}
+
+bool
+Path::isBytecodeFile() const {
+ std::string actualMagic;
+ if (!getMagicNumber(actualMagic, 4))
+ return false;
+ return actualMagic == "llvc" || actualMagic == "llvm";
+}
bool
Path::exists() const {
- return 0 == access(path.c_str(), F_OK );
+ DWORD attr = GetFileAttributes(path.c_str());
+ return attr != INVALID_FILE_ATTRIBUTES;
}
bool
-Path::readable() const {
- return 0 == access(path.c_str(), F_OK | R_OK );
+Path::canRead() const {
+ // FIXME: take security attributes into account.
+ DWORD attr = GetFileAttributes(path.c_str());
+ return attr != INVALID_FILE_ATTRIBUTES;
}
bool
-Path::writable() const {
- return 0 == access(path.c_str(), F_OK | W_OK );
+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 {
- return 0 == access(path.c_str(), R_OK | X_OK );
+Path::canExecute() const {
+ // FIXME: take security attributes into account.
+ DWORD attr = GetFileAttributes(path.c_str());
+ return attr != INVALID_FILE_ATTRIBUTES;
}
std::string
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);
}
-bool
-Path::set_directory(const std::string& a_path) {
- if (a_path.size() == 0)
- return false;
- Path save(*this);
- path = a_path;
- size_t last = a_path.size() -1;
- if (last != 0 && a_path[last] != '/')
- path += '/';
- if (!is_valid()) {
- path = save.path;
- return false;
+const FileStatus *
+Path::getFileStatus(bool update, std::string *ErrStr) const {
+ if (status == 0 || update) {
+ WIN32_FILE_ATTRIBUTE_DATA fi;
+ if (!GetFileAttributesEx(path.c_str(), GetFileExInfoStandard, &fi)) {
+ MakeErrMsg(ErrStr, "getStatusInfo():" + std::string(path) +
+ ": Can't get status: ");
+ return 0;
+ }
+
+ if (status == 0)
+ status = new FileStatus;
+
+ status->fileSize = fi.nFileSizeHigh;
+ status->fileSize <<= sizeof(fi.nFileSizeHigh)*8;
+ status->fileSize += fi.nFileSizeLow;
+
+ status->mode = fi.dwFileAttributes & FILE_ATTRIBUTE_READONLY ? 0555 : 0777;
+ status->user = 9999; // Not applicable to Windows, so...
+ status->group = 9999; // Not applicable to Windows, so...
+
+ // FIXME: this is only unique if the file is accessed by the same file path.
+ // How do we do this for C:\dir\file and ..\dir\file ? Unix has inode
+ // numbers, but the concept doesn't exist in Windows.
+ status->uniqueID = 0;
+ for (unsigned i = 0; i < path.length(); ++i)
+ status->uniqueID += path[i];
+
+ __int64 ft = *reinterpret_cast<__int64*>(&fi.ftLastWriteTime);
+ status->modTime.fromWin32Time(ft);
+
+ status->isDir = fi.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY;
}
- return true;
+ return status;
}
-bool
-Path::set_file(const std::string& a_path) {
- if (a_path.size() == 0)
- return false;
- Path save(*this);
- path = a_path;
- size_t last = a_path.size() - 1;
- while (last > 0 && a_path[last] == '/')
- last--;
- path.erase(last+1);
- if (!is_valid()) {
- path = save.path;
+bool Path::makeReadableOnDisk(std::string* ErrMsg) {
+ // All files are readable on Windows (ignoring security attributes).
+ return false;
+}
+
+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 false;
+
+ if (attr & FILE_ATTRIBUTE_READONLY) {
+ if (!SetFileAttributes(path.c_str(), attr & ~FILE_ATTRIBUTE_READONLY)) {
+ MakeErrMsg(ErrMsg, std::string(path) + ": Can't make file writable: ");
+ return true;
+ }
}
- return true;
+ return false;
+}
+
+bool Path::makeExecutableOnDisk(std::string* ErrMsg) {
+ // All files are executable on Windows (ignoring security attributes).
+ return false;
}
bool
-Path::append_directory(const std::string& dir) {
- if (is_file())
- return false;
- Path save(*this);
- path += dir;
- path += "/";
- if (!is_valid()) {
- path = save.path;
- return false;
+Path::getDirectoryContents(std::set<Path>& result, std::string* ErrMsg) const {
+ const FileStatus *Status = getFileStatus(false, ErrMsg);
+ if (!Status)
+ return true;
+ if (!Status->isDir) {
+ MakeErrMsg(ErrMsg, path + ": not a directory");
+ return true;
}
- return true;
+
+ 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?
+ MakeErrMsg(ErrMsg, path + ": Can't read directory: ");
+ return true;
+ }
+
+ 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);
+ MakeErrMsg(ErrMsg, path + ": Can't read directory: ");
+ return true;
+ }
+ return false;
}
bool
-Path::elide_directory() {
- if (is_file())
- return false;
- size_t slashpos = path.rfind('/',path.size());
- if (slashpos == 0 || slashpos == std::string::npos)
+Path::set(const std::string& a_path) {
+ if (a_path.size() == 0)
return false;
- if (slashpos == path.size() - 1)
- slashpos = path.rfind('/',slashpos-1);
- if (slashpos == std::string::npos)
+ std::string save(path);
+ path = a_path;
+ FlipBackSlashes(path);
+ if (!isValid()) {
+ path = save;
return false;
- path.erase(slashpos);
+ }
return true;
}
bool
-Path::append_file(const std::string& file) {
- if (!is_directory())
+Path::appendComponent(const std::string& name) {
+ if (name.empty())
return false;
- Path save(*this);
- path += file;
- if (!is_valid()) {
- path = save.path;
+ std::string save(path);
+ if (!path.empty()) {
+ size_t last = path.size() - 1;
+ if (path[last] != '/')
+ path += '/';
+ }
+ path += name;
+ if (!isValid()) {
+ path = save;
return false;
}
return true;
}
bool
-Path::elide_file() {
- if (is_directory())
- return false;
+Path::eraseComponent() {
size_t slashpos = path.rfind('/',path.size());
- if (slashpos == std::string::npos)
+ if (slashpos == path.size() - 1 || slashpos == std::string::npos)
return false;
- path.erase(slashpos+1);
+ std::string save(path);
+ path.erase(slashpos);
+ if (!isValid()) {
+ path = save;
+ return false;
+ }
return true;
}
bool
-Path::append_suffix(const std::string& suffix) {
- if (is_directory())
- return false;
- Path save(*this);
+Path::appendSuffix(const std::string& suffix) {
+ std::string save(path);
path.append(".");
path.append(suffix);
- if (!is_valid()) {
- path = save.path;
+ if (!isValid()) {
+ path = save;
return false;
}
return true;
}
bool
-Path::elide_suffix() {
- if (is_directory()) 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;
}
+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::create_directory( bool create_parents) {
- // Make sure we're dealing with a directory
- if (!is_directory()) return false;
-
+Path::createDirectoryOnDisk(bool create_parents, std::string* ErrMsg) {
// Get a writeable copy of the path name
- char pathname[MAXPATHLEN];
- path.copy(pathname,MAXPATHLEN);
+ 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;
+ }
- // Null-terminate the last component
- int lastchar = path.length() - 1 ;
- if (pathname[lastchar] == '/')
- pathname[lastchar] = 0;
+ // Determine starting point for initial / search.
+ char *next = pathname;
+ if (pathname[0] == '/' && pathname[1] == '/') {
+ // Skip host name.
+ next = strchr(pathname+2, '/');
+ if (next == NULL)
+ return PathMsg(ErrMsg, pathname, "badly formed remote directory");
- // If we're supposed to create intermediate directories
- if ( create_parents ) {
- // Find the end of the initial name component
- char * next = strchr(pathname,'/');
- if ( pathname[0] == '/')
- next = strchr(&pathname[1],'/');
+ // Skip share name.
+ next = strchr(next+1, '/');
+ if (next == NULL)
+ return PathMsg(ErrMsg, pathname,"badly formed remote directory");
+
+ next++;
+ if (*next == 0)
+ return PathMsg(ErrMsg, pathname, "badly formed remote directory");
+ } else {
+ if (pathname[1] == ':')
+ next += 2; // skip drive letter
+ if (*next == '/')
+ next++; // skip root directory
+ }
+
+ // If we're supposed to create intermediate directories
+ if (create_parents) {
// Loop through the directory components until we're done
- while ( next != 0 ) {
+ while (*next) {
+ next = strchr(next, '/');
*next = 0;
- if (0 != access(pathname, F_OK | R_OK | W_OK))
- if (0 != mkdir(pathname))
- ThrowError(std::string(pathname) + ": Can't create directory");
- char* save = next;
- next = strchr(pathname,'/');
- *save = '/';
+ if (!CreateDirectory(pathname, NULL))
+ return MakeErrMsg(ErrMsg,
+ std::string(pathname) + ": Can't create directory: ");
+ *next++ = '/';
+ }
+ } else {
+ // Drop trailing slash.
+ pathname[len-1] = 0;
+ if (!CreateDirectory(pathname, NULL)) {
+ return MakeErrMsg(ErrMsg, std::string(pathname) + ": Can't create directory: ");
}
- } else if (0 != mkdir(pathname)) {
- ThrowError(std::string(pathname) + ": Can't create directory");
}
- return true;
+ return false;
}
bool
-Path::create_file() {
- // Make sure we're dealing with a file
- if (!is_file()) return false;
-
+Path::createFileOnDisk(std::string* ErrMsg) {
// Create the file
- if (0 != creat(path.c_str(), S_IRUSR | S_IWUSR))
- ThrowError(std::string(path.c_str()) + ": Can't create file");
+ HANDLE h = CreateFile(path.c_str(), GENERIC_WRITE, 0, NULL, CREATE_NEW,
+ FILE_ATTRIBUTE_NORMAL, NULL);
+ if (h == INVALID_HANDLE_VALUE)
+ return MakeErrMsg(ErrMsg, path + ": Can't create file: ");
- return true;
+ CloseHandle(h);
+ return false;
}
bool
-Path::destroy_directory(bool remove_contents) {
- // Make sure we're dealing with a directory
- if (!is_directory()) return false;
+Path::eraseFromDisk(bool remove_contents, std::string *ErrStr) const {
+ const FileStatus *Status = getFileStatus(false, ErrStr);
+ if (!Status)
+ 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 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))
+ return MakeErrMsg(ErrStr, path + ": Can't destroy file: ");
+ }
- // If it doesn't exist, we're done.
- if (!exists()) return true;
+ if (!DeleteFile(path.c_str()))
+ 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 false;
- if (remove_contents) {
- // Recursively descend the directory to remove its content
- std::string cmd("/bin/rm -rf ");
- cmd += path;
- system(cmd.c_str());
- } else {
- // Otherwise, try to just remove the one directory
- char pathname[MAXPATHLEN];
- path.copy(pathname,MAXPATHLEN);
+ char *pathname = reinterpret_cast<char *>(_alloca(path.length()+3));
int lastchar = path.length() - 1 ;
- if (pathname[lastchar] == '/')
- pathname[lastchar] = 0;
- if ( 0 != rmdir(pathname))
- ThrowError(std::string(pathname) + ": Can't destroy directory");
- }
+ 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 MakeErrMsg(ErrStr, path + ": Can't read directory: ");
+ }
+
+ 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 MakeErrMsg(ErrStr, path + ": Can't read directory: ");
+ }
+ }
+
+ pathname[lastchar] = 0;
+ if (!RemoveDirectory(pathname))
+ 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 {
+ 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::destroy_file() {
- if (!is_file()) return false;
- if (0 != unlink(path.c_str()))
- ThrowError(std::string(path.c_str()) + ": Can't destroy file");
+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 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,
+ NULL,
+ OPEN_EXISTING,
+ FILE_ATTRIBUTE_NORMAL,
+ NULL);
+ if (h == INVALID_HANDLE_VALUE)
+ return true;
+
+ BY_HANDLE_FILE_INFORMATION bhfi;
+ if (!GetFileInformationByHandle(h, &bhfi)) {
+ DWORD err = GetLastError();
+ CloseHandle(h);
+ SetLastError(err);
+ return MakeErrMsg(ErrMsg, path + ": GetFileInformationByHandle: ");
+ }
+
+ FILETIME ft;
+ (uint64_t&)ft = si.modTime.toWin32Time();
+ BOOL ret = SetFileTime(h, NULL, &ft, &ft);
+ DWORD err = GetLastError();
+ CloseHandle(h);
+ if (!ret) {
+ SetLastError(err);
+ return MakeErrMsg(ErrMsg, 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))
+ return MakeErrMsg(ErrMsg, path + ": SetFileAttributes: ");
+ }
+ } else {
+ if (!(bhfi.dwFileAttributes & FILE_ATTRIBUTE_READONLY)) {
+ if (!SetFileAttributes(path.c_str(),
+ bhfi.dwFileAttributes | FILE_ATTRIBUTE_READONLY))
+ return MakeErrMsg(ErrMsg, path + ": SetFileAttributes: ");
+ }
+ }
+
+ return false;
+}
+
+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))
+ return MakeErrMsg(ErrMsg, "Can't copy '" + Src.toString() +
+ "' to '" + Dest.toString() + "': ");
+ return false;
}
+
+bool
+Path::makeUnique(bool reuse_current, std::string* ErrMsg) {
+ if (reuse_current && !exists())
+ 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. 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());
+ return false;
}
-// vim: sw=2 smartindent smarttab tw=80 autoindent expandtab
+bool
+Path::createTemporaryFileOnDisk(bool reuse_current, std::string* ErrMsg) {
+ // Make this into a unique file name
+ 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 MakeErrMsg(ErrMsg, path + ": can't create file");
+ CloseHandle(h);
+ return false;
+}
+
+}
+}
projects / oota-llvm.git / blobdiff