Count all files in directory and subdirectories

Jyang772

Is there a Qt function that counts all files in a directory and all subdirectories? I need to know the total amount of files so that I can create a progressbar as another function processes each file.

@
dir.count();
@
This only gives me the total amount of files in current directory.

JoeyAndres

I assume you are using QDir class for variable dir above. Anyway this sounds like a recursive problem. This is possile as long as you guarantee that there are no links. The following is an implementation. Modify it if appropriate.

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int countFilesAndDirRecursive(QString dirName){
QDir dir(dirName);
int count = 0;
QStringList fileNameList = dir.entryList();
for(QStringList::Iterator iter = fileNameList.begin(); iter != fileNameList.end(); iter++){
// Test if *iter is directory.
bool isDir = dir.cd(*iter);
if(isDir){
// It is a directory.
count += countFilesAndDirRecursive(*iter);

   // Change back to parent.
   dir.cdUp();
   continue;
}

}
return count;
}@

IMPORTANT NOTE: This will guarantee to stop if and only if there are no links(LINUX)/shortcuts(WINDOWS) in your file system. Other than that it should work. There might be some syntax errors since this is typed in my small travel computer.

Jyang772

Thanks.
So I will have to implement counting recursively myself. Will have to put that function on a different thread to keep the GUI responsive.