Qt4: How to read data from files in a directory using QDirIterator

Question

Using Qt 4.7, I need to look for a file in a given directory that has a certain name. If it is found, I need to get the text data from within that file. I have the code set up as follows:

    QDirIterator iterator(dir_name, QDirIterator::IteratorFlag);  
    while(iterator.hasNext()  
    { 
        if(iterator.fileName() == nameOfNeededFile)
        {
            //Code need here to get data!
        }
    }

It's also probably worth noting that the directory only contains files, no subdirectories.

Why don't just open the file you need? There is no need to "search" the file using iterators. You probably need to read the documentation of [QFile](http://qt-project.org/doc/qt-5.0/qtcore/qfile.html). — , Aug 22 '13 at 14:38
I can't see any problem in your file reading code other than the fact that it is nonexistent. What have you tried and what didn't work? — erelender, Aug 22 '13 at 14:48
`QDirIterator::IteratorFlag` is a type, not a value [[link](http://qt-project.org/doc/qt-5.1/qtcore/qdiriterator.html#IteratorFlag-enum)]. This code won't even compile. — cgmb, Aug 22 '13 at 17:25

evilruff · Accepted Answer · 2013-08-22T15:17:05.303

0

as being mentioned in comments you don't need an iterator..

QByteArray data;

if (QFile::exists("<your file name>")) {
   QFile f("your file");
   if (f.open( QIODevice::ReadOnly )) {
      data = f.readAll();
      f.close();
   }
}

edited Aug 22 '13 at 15:17

answered Aug 22 '13 at 15:08

evilruff

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Qt4: How to read data from files in a directory using QDirIterator

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