Reading subfolders

[eefesafak]

My program is created for reading all .cpp and .h files then count line numbers in a folder. But I want to add one more condition which is check that if there is more subfolders. For example, If I want to read /D folder, the program should read all of the /D folder's .cpp and .h files and subfolders which contains .cpp and .h files. Afterward, all of the files must be seen in the program. Here is my program and codes:

void MainWindow::addItemToList(const QString &file, const int &fileSize, const int &count)
{
    QTableWidgetItem *iFileName = new QTableWidgetItem(file);
    QTableWidgetItem *iFileSize = new QTableWidgetItem(QString::number(fileSize));
    QTableWidgetItem *iFileCount = new QTableWidgetItem(QString::number(count));

    int rowCount = ui->tableWidget->rowCount();

    ui->tableWidget->insertRow(rowCount);

    rowCount = ui->tableWidget->rowCount();

    ui->tableWidget->setItem(rowCount-1, 0, iFileName);
    ui->tableWidget->setItem(rowCount-1, 1, iFileSize);
    ui->tableWidget->setItem(rowCount-1, 2, iFileCount);
}

QFileInfoList MainWindow::getFileListFromDir(const QString &directory)
{
    QDir qdir(directory);
    QFileInfoList fileList = qdir.entryInfoList(QStringList() << "*.h"  << "*.hpp" << "*.c" << "*.cpp", QDir::Files);
    return fileList;
}

void MainWindow::on_Browse_clicked()
{
    QString path = QFileDialog::getExistingDirectory(this, tr("Open Directory"), "/home", QFileDialog::ShowDirsOnly |
                                                                                          QFileDialog::DontResolveSymlinks);

    if(path.isEmpty())
        return;

    ui->FullPath->setText(path);
}

void MainWindow::on_Ok_clicked()
{
    QString path = ui->FullPath->text();
    if(path.isEmpty())
        return;

    ui->tableWidget->setRowCount(0);

    QFileInfoList fileList = getFileListFromDir(path);

    int count = 0;
    foreach(const QFileInfo& file, fileList)
    {
        count = m_ig->funcCountLines(file.filePath());
        addItemToList(file.filePath(), file.size(), count);
    }
}

[Christian Ehrlicher]

QDir::entryInfoList() can also return the subdirectories.

[JonB]

@eefesafak said in Reading subfolders:

QFileInfoList fileList = qdir.entryInfoList(QStringList() << "*.h" << "*.hpp" << "*.c" << "*.cpp", QDir::Files);

This only fetches files. Somewhere you need to use similar to fetch directories/folders, and recurse on them finding sub-folders/files.

[eefesafak]

@Christian-Ehrlicher How can i do that by using entryInfoList()? Do you have any suggestions?

[Christian Ehrlicher]

@eefesafak said in Reading subfolders:

How can i do that by using entryInfoList()?

I don't understand this question. When you find a subdirectory then call entryInfoList on this directory.

[jsulm]

@eefesafak said in Reading subfolders:

How can i do that by using entryInfoList()

Please read documentation!
Currently you only read files by passing QDir::Files.
You can also read directories: QDir::Files | QDir::AllDirs
QDir::AllDirs ignores the name filter (as mentioned in the documentation), so you will also get all directories.

[JonB]

@jsulm said in Reading subfolders:

You can also read directories: QDir::Files | QDir::AllDirs

@eefesafak
Probably easiest for you if you use QDir::Files | QDir::AllDirs | QDir::NoDotAndDotDot.

You either pass this on your existing call to get directories, as well as files matching the pattern, and then use QFileInfo::isDir() to recognise which returned entries are directories so you can recurse on them, or issue a separate call with QDir::AllDirs | QDir::NoDotAndDotDot to deal with the sub-directories only.

[eefesafak]

@JonB I wrote;

QDir::Files | QDir::AllDirs | QDir::NoDotAndDotDot

But the program shows only the folder(/home/efe/ImageInverter/efe):

For example, I want to see "/home/efe/ImageInverter/efe/main.cpp".

[jsulm]

@eefesafak said in Reading subfolders:

For example, I want to see "/home/efe/ImageInverter/efe/main.cpp".

That's why you need to reqursevly go into subfolders as @JonB already suggested.
This is a popular programming exercise by the way.