How to erase all the files and folders in the Selected existing directory

[merry]

Thanx

It works , It deletes all the files contained in the folder,

but is there any other way , that after deleting all the files of the folder it also deletes that folder .


Thanx

[marcel]

Yes, just call rmdir for the original QDir, that you pass to the funciton.
You have to call this after the function returns.

Regards

[merry]

Thanx

I do like this only ,but it wont works...

Pls view code...

void Form1::DeleteData(QString dirViewPath)
{
     QDir dirPath(dirViewPath);
	 QList<QFileInfo> infLst = dirPath.entryInfoList();
     for(int i=0;i<infLst.size();i++)
    {
	   QFileInfo strFileInfo = infLst.at(i);
	   QString strFileName = strFileInfo.fileName();
	     if(!(strFileInfo.fileName() == "." || strFileInfo.fileName() == ".."))
		{
	     if(strFileInfo.isDir())
	      {
		   QString strFilePath = dirViewPath + "/" + strFileInfo.fileName();
		   QString fileName = strFileInfo.fileName();
		   DeleteData(strFilePath);
		   dirPath.rmdir(dirViewPath);
		  }
		  else
	     {
	       QString fileName = dirViewPath + "/" + strFileInfo.fileName();
              QFile file1(fileName);
	       file1.remove();
		 }
	  } 
   }
 }

void Form1::DeleteData(QString dirViewPath)
{
     QDir dirPath(dirViewPath);
	 QList<QFileInfo> infLst = dirPath.entryInfoList();
     for(int i=0;i<infLst.size();i++)
    {
	   QFileInfo strFileInfo = infLst.at(i);
	   QString strFileName = strFileInfo.fileName();
	     if(!(strFileInfo.fileName() == "." || strFileInfo.fileName() == ".."))
		{
	     if(strFileInfo.isDir())
	      {
		   QString strFilePath = dirViewPath + "/" + strFileInfo.fileName();
		   QString fileName = strFileInfo.fileName();
		   DeleteData(strFilePath);
		   dirPath.rmdir(dirViewPath);
		  }
		  else
	     {
	       QString fileName = dirViewPath + "/" + strFileInfo.fileName();
              QFile file1(fileName);
	       file1.remove();
		 }
	  } 
   }
 }

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[marcel]

DeleteData does not work?
Or removing the parent dir?
I assume you call it like this:

...
QString dirViewPath = ...
DeleteData(dirViewPath);
//Also add the following two lines:
QDir dir(dirViewPath);
dir.rmdir();
...

...
QString dirViewPath = ...
DeleteData(dirViewPath);
//Also add the following two lines:
QDir dir(dirViewPath);
dir.rmdir();
...

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Or is it a slot?

Regards

[merry]

HI

DeleteData does not work?
Or removing the parent dir?
I assume you call it like this:
...
QString dirViewPath = ...
DeleteData(dirViewPath);
//Also add the following two lines:
QDir dir(dirViewPath);
dir.rmdir();

Pls view the code I sent you in the last post,I think I had added the above two lines..

thanx

[marcel]

Oh, yes, I see now.
That will not work because at that point the parent dir is possible not to be empty, therefore the call will fail.

Do it like I have shown you.

Another solution is:

void Form1::DeleteData(String dirViewPath) 
{
 ...
 //function body
 ...
 
 if(!dirPath.count()==2) //"." and ".." -- might not be  the case. if not,. test with 0 
 {
   dirPath.cdUp();
   dirPath.rmdir(dirViewPath);
 }
}

void Form1::DeleteData(String dirViewPath) 
{
 ...
 //function body
 ...
 
 if(!dirPath.count()==2) //"." and ".." -- might not be  the case. if not,. test with 0 
 {
   dirPath.cdUp();
   dirPath.rmdir(dirViewPath);
 }
}

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This will work. I forgot to mention that you have to go one level above dirViewPath, in order to delete it.

Regards

[merry]

Thanx for the reply

can u pls explain me why u had used this line

if(!dirPath.count()==2)

if(!dirPath.count()==2)

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and also I had used this also

if(!dirPath.count()==2) //"." and ".." -- might not be  the case. if not,. test with 0 
 {
   dirPath.cdUp();
   dirPath.rmdir(dirViewPath);
 }

if(!dirPath.count()==2) //"." and ".." -- might not be  the case. if not,. test with 0 
 {
   dirPath.cdUp();
   dirPath.rmdir(dirViewPath);
 }

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but it also not works....

[marcel]

I am at work and I write these in a hurry.
Remove the "!".
I added those because count might return 2 even if the dir is empty( 2 for . and .. ).

Regards

[merry]

Thanx Marcel

But it also not works

[marcel]

This means that "." and ".." are ignore by count().
Compare with 0 instead of 2 and you'll get it done.

Regards

[merry]

Sorry

It again not works

regards

[marcel]

Then just delete it outside the function after the directory's contents are all removed.
I think you don't "believe in urself" .

Regards

[marcel]

Thanx

It works , It deletes all the files contained in the folder,

but is there any other way , that after deleting all the files of the folder it also deletes that folder .


Thanx

But you said that the contained files and folders are deleted.
I understood that your only problem is the parent folder. You couldn't delete that.

Which one is it?

Regards

[merry]

Actually I said that it deletes all the Files that are in the folders , and empty folders are left.....,

eg..

If there is a folder name "dir1" it further contains files(F1 , F2) and folder dir2.

then F1 and F2 are deleted but empty dir1 and dir2 folders are left....

My question is how can i delete empty folders?

Thanx

[marcel]

But you messed up the code.
In the case you run into a directory:

QDir subDir(finfo.absolutePath());
dir.rmdir(subDir);

QDir subDir(finfo.absolutePath());
dir.rmdir(subDir);

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You removed that.
It should work, as long as the directory is not used/empty.
Couldn't you debug it to see exactly what is wrong?

[merry]

QDir subDir(finfo.absolutePath());
dir.rmdir(subDir);

QDir subDir(finfo.absolutePath());
dir.rmdir(subDir);

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Are u sure it works..
The function is like this only...

QDir::rmdir ( const QString & dirName )

and subDir is of QDir type...

and parameters passed in the function are of QString type...


Thanx

[marcel]

QDir subDir(finfo.absolutePath());
dir.rmdir(subDir);

QDir subDir(finfo.absolutePath());
dir.rmdir(subDir);

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Are u sure it works..
The function is like this only...

QDir::rmdir ( const QString & dirName )

and subDir is of QDir type...

and parameters passed in the function are of QString type...

Thanx

Well, fix it!
Pass finfo.absolutePath() to rmdir.
subdir has to be empty at that moment. so,a rmdir from the parent should work.

What about the debugging?