QCommandLineParser: Can't get command line arguments

[ademmler]

Hi there,

I try the first time <QCommandLineParser>. I have read the documentation and created an example. See below. By some unknown reason I have 2 issues.

1. The given parameters are not recognized when I do:
   -i /path/to/inputfile
   -o /path/to/directory

2. When I try to use an "=" with the option like in
   -i=/path/to/inputfile"
   -o=/path/to/directroy

I get this error: Unexpected value after '-r'.

#include <QCoreApplication>
#include <QCommandLineParser>

int main(int argc, char *argv[])
{
    //Set application infos
    QCoreApplication app(argc, argv);

    //Set commandline paratmeters
    QCommandLineParser parser;
    parser.setApplicationDescription("My cmdline application.");

    //Add related argument options
    QCommandLineOption inputFileOption("i", QCoreApplication::translate("main", "Path to input pdf file"));
    parser.addOption(inputFileOption);

    QCommandLineOption outputDirectoryOption(QStringList() << "o" << "output-directory",
                                             QCoreApplication::translate("main", "Save all output files into <directory>."));
    parser.addOption(outputDirectoryOption);

    // Process the actual command line arguments given by the user
    parser.process(app);

    QString inputFile = parser.value(inputFileOption);
    qInfo() << "Input: " << inputFile;

    QString outputDirectory = parser.value(outputDirectoryOption);
    qInfo() << "Output: " << outputDirectory;

    qInfo() << parser.optionNames();

    return app.exec();
    
    QCoreApplication::quit();
}

[hskoglund]

Hi, maybe you forgot to add the value name, say like this:

,..
//Add spectraproof related argument options
    QCommandLineOption inputFileOption("i", QCoreApplication::translate("main", "Path to input pdf file"),"file");
    parser.addOption(inputFileOption);

    QCommandLineOption outputDirectoryOption(QStringList() << "o" << "output-directory",
                                             QCoreApplication::translate("main", "Save all output files into <directory>."),"dir");
    parser.addOption(outputDirectoryOption);
...

[ademmler]

@hskoglund I tried your idea, but it did not change anything.

If I do it like this it does work:

QCommandLineOption outputResolutionOption("r", QCoreApplication::translate("main", "Rip output resolution in dpi"));
    outputResolutionOption.setValueName("resolution");
    outputResolutionOption.setDefaultValue("200");
    parser.addOption(outputResolutionOption);

[Pl45m4]

@ademmler said in QCommandLineParser: Can't get command line arguments:

When I try to use an "=" with the option like in
-i=/path/to/inputfile"
-o=/path/to/directroy

I get this error: Unexpected value after '-r'

The error you are getting and the code you show doesnt match. In your example code there is no -r option which produces the error.
Only -r doesnt work or is everything else also crashing?

[JoeCFD]

@ademmler this is what I did and it works.
-w width=950

    QCommandLineOption widthOption(QStringList() << "w" << "width",
            QCoreApplication::translate("main", "Defines the width of the main window."),
            QCoreApplication::translate("main", "width"));
    parser.addOption(widthOption);

[ademmler]

@Pl45m4 the Hi, thx

the other option "-o" crashed also.
But as I wrote before I found a way how to do it.

[ademmler]

@JoeCFD Hi thx, I will try your apporach.

But I guess you use either "-w 950" or "--width=950" and not "-w width=950"?
Correct?

[JoeCFD]

@ademmler I use

 "-w width=950"

You see the stringlist match.