[Boost-users] program_options: How to best model two/three pos args

Subject: [Boost-users] program_options: How to best model two/three pos args
From: Florian Lindner (mailinglists_at_[hidden])
Date: 2014-10-08 03:30:21

Hello,

my application has positional arguments like that:

Run tests          :  ./app test ConfigurationName PathToSrc
Run server         :  ./app server ParticipantName ConfigurationName
Print XML reference:  ./app xml Linewidth

It has three (if first in [test, server]) or two (if first in [xml]) 
positional arguments.

How to model and test this best using boost?

I could add three options and declare them as positional arguments, named 
like "first", "second", "third".

I could also use just one positional argument like:

po::positional_options_description pos_dec;
pos_dec.add("positionals", 3);

and test the resulting vector.

What do you think?

Thanks,
Florian