int CountTree(int n)
{
if(n <= 1)
return 1 ;
int sum = 0 ;
int root , left , right ;
for(root = 1 ; root <= n ; root++)
{
left = CountTree(root - 1) ;
right = CountTree(n - root) ;
sum = sum + left*right ;
}
return sum ;
}
void ImageScanThread<DBFS>::CountFiles(const QStringList &paths)
{
// Get exclusions as comma-seperated list using glob chars * and ?
QString excPattern = gCoreContext->GetSetting("GalleryIgnoreFilter", "");
// Combine into a single regexp
excPattern.replace(".", "\\."); // Preserve "."
excPattern.replace("*", ".*"); // Convert glob wildcard "*"
excPattern.replace("?", "."); // Convert glob wildcard "?"
excPattern.replace(",", "|"); // Convert list to OR's
QString pattern = QString("^(%1)$").arg(excPattern);
m_exclusions = REGEXP(pattern);
LOG(VB_FILE, LOG_DEBUG, QString("Exclude regexp is \"%1\"").arg(pattern));
// Lock counts until counting complete
QMutexLocker locker(&m_mutexProgress);
m_progressCount = 0;
m_progressTotalCount = 0;
// Use global image filters
QDir dir = m_dir;
foreach(const QString &sgDir, paths)
{
// Ignore missing dirs
if (dir.cd(sgDir))
CountTree(dir);
}
// 0 signifies a scan start
Broadcast(0);
}
/*!
\brief Counts images in a list of subtrees
\param paths List of dirs
*/
void ImageScanThread::CountFiles(QStringList paths)
{
// Get exclusions as comma-seperated list using glob chars * and ?
QString excPattern = gCoreContext->GetSetting("GalleryIgnoreFilter", "");
// Combine into a single regexp
excPattern.replace(".", "\\."); // Preserve "."
excPattern.replace("*", ".*"); // Convert glob wildcard "*"
excPattern.replace("?", "."); // Convert glob wildcard "?"
excPattern.replace(",", "|"); // Convert list to OR's
QString pattern = QString("^(%1)$").arg(excPattern);
m_exclusions = QRegExp(pattern);
LOG(VB_FILE, LOG_DEBUG, QString("%1: Exclude regexp is \"%2\"")
.arg(objectName(), pattern));
QMutexLocker locker(&m_mutexProgress);
m_progressCount = 0;
m_progressTotalCount = 0;
// Release lock to broadcast
locker.unlock();
BroadcastStatus("SCANNING");
locker.relock();
// Use global image filters
QDir dir = m_dir;
foreach(const QString &sgDir, paths)
{
dir.cd(sgDir);
CountTree(dir);
}
void ImageScanThread<DBFS>::CountTree(QDir &dir)
{
QFileInfoList files = dir.entryInfoList();
foreach(const QFileInfo &fileInfo, files)
{
if (fileInfo.isFile())
++m_progressTotalCount;
// Ignore excluded dirs and missing dirs
else if (!m_exclusions.match(fileInfo.fileName()).hasMatch()
&& dir.cd(fileInfo.fileName()))
{
CountTree(dir);
dir.cdUp();
}
}
}
/*!
\brief Counts images in a dir subtree
\details Ignores files/dirs that match exclusions regexp
\param dir Parent of subtree
*/
void ImageScanThread::CountTree(QDir &dir)
{
QFileInfoList files = dir.entryInfoList();
foreach(const QFileInfo &fileInfo, files)
{
if (fileInfo.isFile())
++m_progressTotalCount;
else if (m_exclusions.exactMatch(fileInfo.fileName()))
LOG(VB_GENERAL, LOG_INFO, QString("%1: Excluding %2")
.arg(objectName(), fileInfo.filePath()));
else
{
dir.cd(fileInfo.fileName());
CountTree(dir);
dir.cdUp();
}
}
}
void ImageScanThread<DBFS>::CountTree(QDir &dir)
{
QFileInfoList files = dir.entryInfoList();
foreach(const QFileInfo &fileInfo, files)
{
// Ignore excluded dirs/files
if (MATCHES(m_exclusions, fileInfo.fileName()))
continue;
if (fileInfo.isFile())
++m_progressTotalCount;
// Ignore missing dirs
else if (dir.cd(fileInfo.fileName()))
{
CountTree(dir);
dir.cdUp();
}
}
}
int main()
{
int n = CountTree(9) ;
printf("%d is the number of trees\n", n );
}