enh(Poco::Util::Application): Skip unknow options

[siren186]

I embed the Poco::Util::Application into the chrome browser process, The process has a lot of startup parameters, I am only interested in one of the parameters, I hope Poco::Util::Application can skip the parameters that I am not interested in.

The browser process has a lot of startup parameters, e.g.

app.exe --type=gpu-process --no-sandbox --lang=zh-CN --user-data-dir="C:\CEF" --gpu-preferences=UAAAAAAAAA

And my code is:

class App : public Poco::Util::Application
{
public:
    App() = default;

protected:
    virtual void defineOptions(Poco::Util::OptionSet& options) override
    {
        setUnixOptions(true);

        // I don't know how many options a browser process has.
        // I just wanna handle "type" option, skip other options.
        options.addOption(
            Poco::Util::Option("type", "t", "Process type")
            .required(false)
            .repeatable(false)
            .argument("TYPE"));
    }
};

// app.exe --type=gpu-process --no-sandbox --lang=zh-CN --user-data-dir="C:\CEF" --gpu-preferences=UAAAAAAAAA
int main(int argc, char** argv)
{
    try
    {
        App app;
        app.init(argc, argv);
        app.run();
    }
    catch (const Poco::Util::UnknownOptionException& e)
    {
        // It will throw this exception, How can I skip unknown options ?
        std::cout << e.displayText(); // "Unknown option specified: no-sandbox"
    }
    return 0;
}

How can I skip unknown options ?

[aleks-f]

poco/Util/include/Poco/Util/Application.h

Line 291 in e4aaeac

void stopOptionsProcessing();

[siren186]

If I only wanna handle the fourth argument --user-data-dir. and skip other arguments.
stopOptionsProcessing() can not help me to deal with this situation:

// app.exe --type=gpu-process --no-sandbox --lang=zh-CN --user-data-dir="C:\CEF" --gpu-preferences=UAAAAAAAAA
//
class App : public Poco::Util::Application
{
public:
    App() = default;

protected:
    virtual void defineOptions(Poco::Util::OptionSet& options) override
    {
        options.addOption(Poco::Util::Option("user-data-dir", "u", "User data directory").argument("UserDataDirectory"));
    }
};

It will throw Poco::Util::UnknownOptionException("Unknown option specified: type")