How to do not list specified files

[eefesafak]

I can already list specified files. In addition, my goal is to do not list files starting with a specific name.
The program and my code:

QFileInfoList MainWindow::getFileListFromDir(const QString &directory)
{
    QDir qdir(directory);

    QString include = ui->lineEdit->text();
    QString except = ui->lineEdit2->text();
    QStringList includeList = include.split(QLatin1Char(';'));
    QStringList exceptList = except.split(QLatin1Char(';'));

    QFileInfoList fileList = qdir.entryInfoList(QStringList() << includeList, QDir::Files, QDir::Size);
    
    for(const QFileInfo &subDirectory : qdir.entryInfoList(QDir::AllDirs | QDir::NoDotAndDotDot))
    {
        fileList << getFileListFromDir(subDirectory.absoluteFilePath());
    }
    ui->lineEdit->setText(ui->lineEdit->displayText());
        return fileList;
}

On the program image, I can list files ending with specific name (*.cpp and *.o) but for example, I do not want to list moc_countline.o
Thanks for your help.

[J.Hilk]

@eefesafak

for(const QFileInfo &subDirectory : qdir.entryInfoList(QDir::AllDirs | QDir::NoDotAndDotDot))
    {
        bool doInclude{true};
        for(const QString &entry : exceptList) {
               if(subDirectory.baseName().startsWith(entry)) { //alternative to startsWith() -> contains() - decide for yourself what to use
                     doInclude = false;
                     break;
                }
        }
        if(doInclude)
              fileList << getFileListFromDir(subDirectory.absoluteFilePath());
    }

[eefesafak]

@J-Hilk I suppose this codes work only for subdirectories. Becaues, I did not get the output I want.

[J.Hilk]

@eefesafak my bad, this only works with filters of moc instead of moc*
startWith has no overload for regEx, so you'll have to use contains

if(subDirectory.baseName().contains(QRegularExpression("^" + entry) ) );

[JonB]

@J-Hilk said in How to do not list specified files:

QRegularExpression("^" + entry)

Won't work correctly. moc* etc. are wildcard patterns, not regular expressions, which you are assuming! (E.g. test: moc* in Exclude list will exclude moc_anything [correctly but coincidentally] but will also exclude mo_anything, which it should not.)

Shall I leave it to you/ @eefesafak to correct? :)

[eefesafak]

@JonB It would be great.

[J.Hilk]

@JonB go for it, wildcards, and regex in general is magic for me

I tinker with it until it does what I want it to, but its usually full of edge cases I did not consider :P

[JonB]

@eefesafak said in How to do not list specified files:

@JonB It would be great.

Looks like correct (Qt 5.12+) would be:

if (subDirectory.baseName().contains(QRegularExpression::wildcardToRegularExpression(entry) ) );

P.S.
OP is Linux, so filenames are case-sensitive and hence this is correct. If you took this to Windows you would want to add QRegularExpression::CaseInsensitiveOption to the QRegularExpression::PatternOptions.

[J.Hilk]

@JonB stats a convenient static function :D

[eefesafak]

This is my code right now and it is still not working.

QFileInfoList MainWindow::getFileListFromDir(const QString &directory)
{
    QDir qdir(directory);

    QString include = ui->lineEdit->text();
    QString except = ui->lineEdit2->text();
    QStringList includeList = include.split(QLatin1Char(';'));
    QStringList exceptList = except.split(QLatin1Char(';'));

    QFileInfoList fileList = qdir.entryInfoList(QStringList() << includeList, QDir::Files, QDir::Size);



    for(const QFileInfo &subDirectory : qdir.entryInfoList(QDir::AllDirs | QDir::NoDotAndDotDot))
        {
            bool doInclude{true};
            for(const QString &entry : exceptList) {
                   if(subDirectory.baseName().contains(QRegularExpression::wildcardToRegularExpression(entry))) {
                         doInclude = false;
                         break;
                    }
            }
            if(doInclude)
                  fileList << getFileListFromDir(subDirectory.absoluteFilePath());
        }

    ui->lineEdit->setText(ui->lineEdit->displayText());
    return fileList;
}

[J.Hilk]

@eefesafak said in How to do not list specified files:

QFileInfoList fileList = qdir.entryInfoList(QStringList() << includeList, QDir::Files, QDir::Size);

sorry, totally my bad. I didn't understand your code correctly.

You solely rely on the entryInfoList that you give a filter to to get all your files, so you would have to also give your exceptList to that.

However, I don't know how one "negates" a wildcard match 🤷‍♂️

I would personally iterate myself over the files.

[JonB]

@eefesafak said in How to do not list specified files:

This is my code right now and it is still not working.

If you only apply the exceptList to your qdir.entryInfoList(QDir::AllDirs | QDir::NoDotAndDotDot), which only returns directories, how would you expect it to affect the files returned from the separate QFileInfoList fileList = qdir.entryInfoList(QStringList() << includeList, QDir::Files, QDir::Size); ??

Separately, since you do not apply the includeList to the directories why do you choose to apply the exceptList to them?

Do you follow what your own code is doing?

[eefesafak]

@JonB said in How to do not list specified files:

Separately, since you do not apply the includeList to the directories why do you choose to apply the exceptList to them?

Thanks for reminding. My program is working correctly. Here is my code:

QFileInfoList MainWindow::getFileListFromDir(const QString &directory)
{
    QDir qdir(directory);

    QString include = ui->lineEdit->text();
    QString except = ui->lineEdit2->text();
    QStringList includeList = include.split(QLatin1Char(';'));
    QStringList exceptList = except.split(QLatin1Char(';'));

    QFileInfoList fileList = qdir.entryInfoList(QStringList() << includeList, QDir::Files, QDir::Size);

    for(const QFileInfo& file : qdir.entryInfoList(QStringList() << exceptList))
    {
        for(const QFileInfo& filee: fileList)
        {
            if(file.fileName() == filee.fileName())
            {
                fileList.removeOne(filee);
            }
        }
    }
    
    for(const QFileInfo &subDirectory : qdir.entryInfoList(QDir::AllDirs | QDir::NoDotAndDotDot))
    {
        fileList << getFileListFromDir(subDirectory.absoluteFilePath());
    }
    
    ui->lineEdit->setText(ui->lineEdit->displayText());
    return fileList;
}

[JonB]

@eefesafak Yep, this looks right :)