/*
* vislib::sys::Path::MakeDirectory
*/
void vislib::sys::Path::MakeDirectory(const StringA& path) {
Stack<StringA> missingParts;
StringA firstBuilt;
StringA curPath = Resolve(path);
while (!File::Exists(curPath)) {
StringA::Size pos = curPath.FindLast(SEPARATOR_A);
if (pos != StringA::INVALID_POS) {
missingParts.Push(curPath.Substring(pos + 1));
if (missingParts.Peek()->IsEmpty()) {
// Remove empty directories as the incremental directory
// creation later on will fail for these.
missingParts.Pop();
}
curPath.Truncate(pos);
} else {
// Problem: No Separators left, but directory still does not exist.
#ifdef _WIN32
throw vislib::sys::SystemException(ERROR_INVALID_NAME, __FILE__, __LINE__);
#else /* _WIN32 */
throw vislib::sys::SystemException(EINVAL, __FILE__, __LINE__);
#endif /* _WIN32 */
}
}
// curPath exists
if (!File::IsDirectory(curPath)) {
// the latest existing directory is not a directory (may be a file?)
#ifdef _WIN32
throw vislib::sys::SystemException(ERROR_DIRECTORY, __FILE__, __LINE__);
#else /* _WIN32 */
throw vislib::sys::SystemException(EEXIST, __FILE__, __LINE__);
#endif /* _WIN32 */
}
while (!missingParts.IsEmpty()) {
curPath += SEPARATOR_A;
curPath += missingParts.Pop();
#ifdef _WIN32
if (CreateDirectoryA(curPath, NULL) != 0) {
#else /* _WIN32 */
if (mkdir(curPath, S_IRWXG | S_IRWXO | S_IRWXU) == 0) { // TODO: Check
#endif /* _WIN32 */
// success, so go on.
if (firstBuilt.IsEmpty()) {
firstBuilt = curPath;
}
} else {
DWORD errorCode = GetLastError();
try {
// failure, so try to remove already created paths and throw exception.
DeleteDirectory(firstBuilt, true);
} catch(...) {
}
throw vislib::sys::SystemException(errorCode, __FILE__, __LINE__);
}
}
// we are done!
}
/*
* vislib::sys::Path::MakeDirectory
*/
void vislib::sys::Path::MakeDirectory(const StringW& path) {
#ifdef _WIN32
Stack<StringW> missingParts;
StringW firstBuilt;
StringW curPath = Resolve(path);
while (!File::Exists(curPath)) {
StringW::Size pos = curPath.FindLast(SEPARATOR_W);
if (pos != StringW::INVALID_POS) {
missingParts.Push(curPath.Substring(pos + 1));
if (missingParts.Peek()->IsEmpty()) {
// Remove empty directories as the incremental directory
// creation later on will fail for these.
missingParts.Pop();
}
curPath.Truncate(pos);
} else {
// Problem: No Separators left, but directory still does not exist.
throw vislib::sys::SystemException(ERROR_INVALID_NAME, __FILE__, __LINE__);
}
}
// curPath exists
if (!File::IsDirectory(curPath)) {
// the latest existing directory is not a directory (may be a file?)
throw vislib::sys::SystemException(ERROR_DIRECTORY, __FILE__, __LINE__);
}
while (!missingParts.IsEmpty()) {
curPath += SEPARATOR_W;
curPath += missingParts.Pop();
if (CreateDirectoryW(curPath, NULL) != 0) {
// success, so go on.
if (firstBuilt.IsEmpty()) {
firstBuilt = curPath;
}
} else {
DWORD errorCode = GetLastError();
try {
// failure, so try to remove already created paths and throw exception.
DeleteDirectory(firstBuilt, true);
} catch(...) {
}
throw vislib::sys::SystemException(errorCode, __FILE__, __LINE__);
}
}
// we are done!
#else /* _WIN32 */
// linux is stupid
MakeDirectory(W2A(path));
#endif /* _WIN32 */
}
/*
* vislib::sys::Path::Canonicalise
*/
vislib::StringA vislib::sys::Path::Canonicalise(const StringA& path) {
const StringA DOUBLE_SEPARATOR(Path::SEPARATOR_A, 2);
#ifdef _WIN32
StringA retval;
if (::PathCanonicalizeA(retval.AllocateBuffer(MAX_PATH), path) != TRUE) {
throw SystemException(__FILE__, __LINE__);
}
retval.Replace(DOUBLE_SEPARATOR.PeekBuffer(), SEPARATOR_A);
retval.Replace(DOUBLE_SEPARATOR.PeekBuffer(), SEPARATOR_A);
/* Ensure that a UNC path remains a UNC path. */
if (path.StartsWith(DOUBLE_SEPARATOR)) {
// Note: Double separator replacement above leaves at least one
// separator, so we must only prepend one additional one.
retval.Prepend(SEPARATOR_A);
}
return retval;
#else /* _WIN32 */
const char *BACK_REF = "/..";
const char *CUR_REF = "/."; // Note: "./" does not work
StringA::Size BACK_REF_LEN = ::strlen(BACK_REF);
StringA::Size bwRefPos = 0; // Position of back reference.
StringA::Size remDirPos = 0; // Position of directory to erase.
StringA retval(path);
/* Remove backward references, first. */
while ((bwRefPos = retval.Find(BACK_REF)) != StringA::INVALID_POS) {
if ((bwRefPos > 0)
&& (remDirPos = retval.FindLast(SEPARATOR_A, bwRefPos - 1))
!= StringA::INVALID_POS) {
/* Found inner backward reference, so remove some parts. */
retval.Remove(remDirPos, bwRefPos - remDirPos + BACK_REF_LEN);
} else {
/*
* No other path separator is before this one, so we can remove
* everything before 'bwRefPos'.
*/
retval.Remove(0, bwRefPos + BACK_REF_LEN);
}
}
/*
* Remove references to the current directory. This must be done after
* removing backward references.
*/
retval.Remove(CUR_REF);
/* Remove odd and even number of repeated path separators. */
retval.Replace(DOUBLE_SEPARATOR.PeekBuffer(), SEPARATOR_A);
retval.Replace(DOUBLE_SEPARATOR.PeekBuffer(), SEPARATOR_A);
return retval;
#endif /* _WIN32 */
}
