/*
* vislib::sys::Path::Concatenate
*/
vislib::StringW vislib::sys::Path::Concatenate(const StringW& lhs,
const StringW& rhs, const bool canonicalise) {
StringW retval(lhs);
if (lhs.EndsWith(SEPARATOR_W) && rhs.StartsWith(SEPARATOR_W)) {
retval.Append(rhs.PeekBuffer() + 1);
} else if (!lhs.EndsWith(SEPARATOR_W) && !rhs.StartsWith(SEPARATOR_W)) {
retval.Append(SEPARATOR_W);
retval.Append(rhs);
} else {
retval.Append(rhs);
}
return canonicalise ? Path::Canonicalise(retval) : retval;
}
/*
* vislib::sys::Path::GetUserHomeDirectoryW
*/
vislib::StringW vislib::sys::Path::GetUserHomeDirectoryW(void) {
#ifdef _WIN32
StringW retval;
if (FAILED(::SHGetFolderPathW(NULL, CSIDL_PERSONAL, NULL, 0,
retval.AllocateBuffer(MAX_PATH)))) {
throw SystemException(ERROR_NOT_FOUND, __FILE__, __LINE__);
}
if (!retval.EndsWith(SEPARATOR_W)) {
retval += SEPARATOR_W;
}
return retval;
#else /* _WIN32 */
return StringW(GetUserHomeDirectoryA());
#endif /* _WIN32 */
}
/*
* vislib::sys::Path::PurgeDirectory
*/
void vislib::sys::Path::PurgeDirectory(const StringW& path, bool recursive) {
StringW fullpath = Resolve(path);
if (!fullpath.EndsWith(SEPARATOR_W)) fullpath += SEPARATOR_W;
DirectoryIteratorW iter(fullpath);
while (iter.HasNext()) {
DirectoryEntryW entry = iter.Next();
if (entry.Type == DirectoryEntryW::FILE) {
vislib::sys::File::Delete(fullpath + entry.Path);
} else
if (entry.Type == DirectoryEntryW::DIRECTORY) {
if (recursive) {
DeleteDirectory(fullpath + entry.Path, true);
}
} else {
ASSERT(false); // DirectoryEntry is something unknown to this
// implementation. Check DirectoryIterator for
// changes.
}
}
}
/*
* vislib::sys::Path::DeleteDirectory
*/
void vislib::sys::Path::DeleteDirectory(const StringA& path, bool recursive) {
if (!File::Exists(path)) return; // we don't delete non-existing stuff
StringA fullPath = Resolve(path);
if (!fullPath.EndsWith(SEPARATOR_A)) fullPath += SEPARATOR_A;
if (recursive) {
// remove files and directory
PurgeDirectory(fullPath, true);
}
#ifdef _WIN32
if (RemoveDirectoryA(fullPath) == 0) {
#else /* _WIN32 */
if (rmdir(fullPath) != 0) {
#endif /* _WIN32 */
throw vislib::sys::SystemException(__FILE__, __LINE__);
}
}
/*
* vislib::sys::Path::DeleteDirectory
*/
void vislib::sys::Path::DeleteDirectory(const StringW& path, bool recursive) {
#ifdef _WIN32
if (!File::Exists(path)) return; // we don't delete non-existing stuff
StringW fullPath = Resolve(path);
if (!fullPath.EndsWith(SEPARATOR_W)) fullPath += SEPARATOR_W;
if (recursive) {
// remove files and directory
PurgeDirectory(fullPath, true);
}
if (RemoveDirectoryW(fullPath) == 0) {
throw vislib::sys::SystemException(__FILE__, __LINE__);
}
#else /* _WIN32 */
// linux is stupid
DeleteDirectory(W2A(path), recursive);
#endif /* _WIN32 */
}
/*
* vislib::sys::Path::FindExecutablePath
*/
vislib::StringA vislib::sys::Path::FindExecutablePath(
const vislib::StringA& filename) {
#ifdef _WIN32
bool found = false;
DWORD bufSize = MAX_PATH;
char *buffer = new char[bufSize];
// first try: "SearchPath"
DWORD rv = ::SearchPathA(NULL, filename.PeekBuffer(), NULL, bufSize,
buffer, NULL);
if (rv > 0) {
found = true;
if (rv + 1 > bufSize) {
bufSize = rv + 1;
delete[] buffer;
buffer = new char[bufSize];
rv = ::SearchPathA(NULL, filename.PeekBuffer(), NULL, bufSize,
buffer, NULL);
if (rv == 0) { // failed
found = false;
}
}
}
if (!found) {
// second try: "AssocQueryString"
// NOTE:
// AssocQueryString does not work as specified! It is not possible to ask
// for the size of the string buffer holding the value returned. Therefore
// this implementation increases the buffersize until the returned strings
// no longer grow.
DWORD bufLen = MAX_PATH;
HRESULT hr;
bufSize = MAX_PATH;
do {
hr = ::AssocQueryStringA(ASSOCF_INIT_BYEXENAME, ASSOCSTR_EXECUTABLE,
filename.PeekBuffer(), NULL, buffer, &bufSize);
if ((hr != E_POINTER) && (hr != S_OK)) { // error
break;
}
if (bufSize == bufLen) {
bufLen += MAX_PATH;
bufSize = bufLen;
delete[] buffer;
buffer = new char[bufSize];
} else {
found = true;
}
} while (bufSize == bufLen);
}
if (found) {
vislib::StringA retval(buffer);
delete[] buffer;
return retval;
} else {
return "";
}
#else /* _WIN32 */
// Note:
// Do not use "Console::Run" or "Process" methods because they might use
// this method to determine the full path of their binaries. So we avoid
// calling cycles by just using "popen" directly
vislib::StringA cmd("which ");
vislib::StringA ret;
cmd += filename;
cmd += " 2> /dev/null";
const int bufferSize = 1024;
char buffer[bufferSize];
FILE *which = ::popen(cmd.PeekBuffer(), "r");
if (which == NULL) {
return "";
}
while (!::feof(which)) {
ret += fgets(buffer, bufferSize, which);
}
::pclose(which);
vislib::StringA::Size end = ret.Find('\n');
if (end != vislib::StringA::INVALID_POS) {
ret.Truncate(end);
}
if (ret.EndsWith(filename)) {
return ret;
} else {
return "";
}
#endif /* _WIN32 */
}
