[Boost-users] [program option] accepting list of enumerated values ?

Subject: [Boost-users] [program option] accepting list of enumerated values ?
From: John Dlugosz (JDlugosz_at_[hidden])
Date: 2010-07-22 18:00:42

I want a program to take an option that is one or more values from a short list; i.e. an enumeration.  For sake of a simple example, let's use color names: "red", "yellow", "blue", "green", etc.

I'd like to validate that only legal strings are passed, and convert them to an enumerated type or integer.  Certainly I can write po::value<std::vector<color_t> >, but what's the best way to process the input?  The docs shows a brief example of overloading 'validate' but it's not clear.

I'd also like a short way to specify multiple colors without repeating the option.  Something like --color=red,blue but whatever the natural syntax is.  Is a multi-value on one instance of a switch something that's built in?

Thanks,

--John




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