How to use QCommandLineParser for arguments with multiple params? - c++

Question

I wonder, how can I use multiple- or sub-arguments with QCommandLineParser?
For example:
/home/my_app --my_option_with_two_params first_param second_param --my-option-with-one-param param?

Answer 1

Try this which has the analogy of -I /my/include/path1 -I /my/include/path2:
--my_option_with_two_params first_param --my_option_with_two_params second_param
... and then you can use this method to have access to the values:
QStringList QCommandLineParser::values(const QString & optionName) const
Returns a list of option values found for the given option name optionName, or an empty list if not found.
The name provided can be any long or short name of any option that was added with addOption().
Here you can find a simple test case that works:
main.cpp
#include <QCoreApplication>
#include <QCommandLineParser>
#include <QCommandLineOption>
#include <QDebug>
int main(int argc, char *argv[])
{
QCoreApplication app(argc, argv);
QCoreApplication::setApplicationName("multiple-values-program");
QCoreApplication::setApplicationVersion("1.0");
QCommandLineParser parser;
parser.setApplicationDescription("Test helper");
parser.addHelpOption();
parser.addVersionOption();
QCommandLineOption targetDirectoryOption(QStringList() << "t" << "target-directory",
QCoreApplication::translate("main", "Copy all source files into <directory>."),
QCoreApplication::translate("main", "directory"));
parser.addOption(targetDirectoryOption);
parser.process(app);
qDebug() << parser.values(targetDirectoryOption);
return 0;
}
main.pro
TEMPLATE = app
TARGET = main
QT = core
SOURCES += main.cpp
Build
qmake && make
Output when --help is used
Usage: main [options]
Test helper
Options:
-h, --help Displays this help.
-v, --version Displays version information.
-t, --target-directory <directory> Copy all source files into <directory>.
Run and Output
./main -t foo -t bar -> ("foo", "bar")
./main -t foo bar -> ("foo")