How to remove empty folders?

[merry]

Hi all

Working on Qt4.2 on my mac intel machine.

void MainWindow::ClearDir(QString dirRoot) 
{
      ClearAll(dirRoot);
      QDir d(dirRoot);
      d.cdUp();
      d.rmdir(dirRoot);
}
 
/*Function for erasing Folder*/
 
void MainWindow:: ClearAll(QString dirViewPath)
 {     
      QDir dirPath(dirViewPath); 
      QList<QFileInfo> infLst = dirPath.entryInfoList(QDir::AllEntries |     QDir::NoDotAndDotDot);
 
		foreach(QFileInfo finfo, infLst )
			{
				if(finfo.isDir() )
				{
					  ClearAll(finfo.absoluteFilePath());
					  dirPath.rmdir(finfo.absoluteFilePath());
				}
				else 
				{ //file
					  QString fileName = dirViewPath + "/" + finfo.fileName(); 
					  dirPath.remove(finfo.absoluteFilePath());
				} 
		}
}

void MainWindow::ClearDir(QString dirRoot) 
{
      ClearAll(dirRoot);
      QDir d(dirRoot);
      d.cdUp();
      d.rmdir(dirRoot);
}
 
/*Function for erasing Folder*/
 
void MainWindow:: ClearAll(QString dirViewPath)
 {     
      QDir dirPath(dirViewPath); 
      QList<QFileInfo> infLst = dirPath.entryInfoList(QDir::AllEntries |     QDir::NoDotAndDotDot);
		
		foreach(QFileInfo finfo, infLst )
			{
				if(finfo.isDir() )
				{
					  ClearAll(finfo.absoluteFilePath());
					  dirPath.rmdir(finfo.absoluteFilePath());
				}
				else 
				{ //file
					  QString fileName = dirViewPath + "/" + finfo.fileName(); 
					  dirPath.remove(finfo.absoluteFilePath());
				} 
		}
}

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Using this code, I try to remove the existing dir selected using QFileDialog, I will be able to remove all the files but empty folders are left.

[spirit]

are you really sure that the directory which you try to remove is empty?

bool QDir::rmdir ( const QString & dirName ) const
Removes the directory specified by dirName.
The directory must be empty for rmdir() to succeed.
Returns true if successful; otherwise returns false.
See also mkdir().

[merry]

Thanks for the replying.

When i am trying remove directories, it returns false...

What it mean, that the directories are not empty..

For eg. i am having Folder F0 which contains sub folder F1 and F2 Which further contains some files f1,f2,f3,f4..

using the above code, written in the previous mail, i was able to remove all the files f1,f2,f3,f4 but folders F0, F1 and F2 are still there, is am doing something wrong or is there any other alternative...

[spirit]

try this code

MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent)
{
	m_pb = new QPushButton(tr("Clear"));
	connect(m_pb, SIGNAL(clicked()), SLOT(clearFolder()));
	setCentralWidget(m_pb);
}
 
void MainWindow::clearFolder()
{
	clearFolder("E:/f0");
}
 
void MainWindow::clearFolder(const QString &folder)
{
	QDir dir(folder);	
	QStringList entries = dir.entryList(QDir::Dirs | QDir::Files | QDir::NoDotAndDotDot);
	foreach (QString entry, entries) {
		QFileInfo fileInfo(folder + "/" + entry);
		if (fileInfo.isFile() && !QFile::remove(fileInfo.filePath())) {
			qWarning() << "can't remove '" << fileInfo.filePath() << "'";
			return;
		} else if (fileInfo.isDir())
			clearFolder(fileInfo.filePath());
	}	
	if (!dir.rmdir(dir.absolutePath()))
		qWarning() << "can't remove '" << dir.absolutePath() << "'";
}

MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent)
{
	m_pb = new QPushButton(tr("Clear"));
	connect(m_pb, SIGNAL(clicked()), SLOT(clearFolder()));
	setCentralWidget(m_pb);
}

void MainWindow::clearFolder()
{
	clearFolder("E:/f0");
}

void MainWindow::clearFolder(const QString &folder)
{
	QDir dir(folder);	
	QStringList entries = dir.entryList(QDir::Dirs | QDir::Files | QDir::NoDotAndDotDot);
	foreach (QString entry, entries) {
		QFileInfo fileInfo(folder + "/" + entry);
		if (fileInfo.isFile() && !QFile::remove(fileInfo.filePath())) {
			qWarning() << "can't remove '" << fileInfo.filePath() << "'";
			return;
		} else if (fileInfo.isDir())
			clearFolder(fileInfo.filePath());
	}	
	if (!dir.rmdir(dir.absolutePath()))
		qWarning() << "can't remove '" << dir.absolutePath() << "'";
}

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[merry]

I tried above code , but it also wont able to remove dirs.

[spirit]

very strange, I have run this code and it worked.

[spirit]

maybe you don't have permissions to remove dirs?

[merry]

Actually, When i create a new blank folder than it is able to remove ,If i open an existing directory which contains subdirs also using QFileDialog , then it wont able to remove..

[spirit]

maybe dir path is absolute?

[merry]

Yaa the dir path is absolute.

[merry]

If the path is absolute , then how can i remove direcctories..