Hello.
2020-09-17 21:47 UTC+02:00, Oliver Heger <oliver.he...@oliver-heger.de>:
> Hi all,
>
> once we had a discussion (it must be one or two years ago) whether
> Commons could support components in other (JVM) languages, too. IIRC,
> there were no strong objections, but there has never been a follow up.
>
> For a project in Scala, I needed some limited functionality to process
> command line parameters. I came up with a functional solution that
> seemed to be pretty flexible. So I extracted the code into a separate
> repository [1] and enhanced it.
>
> It is now in a shape that it supports a lot of the features typical to a
> CLI library. The functional programming (FP) approach is probably
> somewhat special: you define extractors using a DSL, which are actually
> monads and thus can be nicely transformed and composed to more complex
> structures. The end product is a configuration object representing all
> the parameters passed to the application in a type-safe manner. The
> repository contains a README describing the high-level concepts and a
> tutorial [2] with a comprehensive description of all the features
> available.
How does it compare with e.g.
https://github.com/remkop/picocli
?
> So I would like to ask again the question whether Commons could have
> components in other programming languages, and more specifically,
> whether this CLI for Scala library could be a candidate.
Given the current drift towards GitHub-centered development,
what do you expect from bringing the code here?
> Notes:
> - Except for the domain, there is no relation to the original [CLI]; the
> concepts are completely different.
> - The Scala CLI has been written in and for Scala; so the API can
> probably not be used from Java directly.
> - As special Scala language features are used, it won't be trivial to
> port this code to Java; but maybe some of the ideas could be
> incorporated into [CLI]?
IIRC, last time significant improvements were evoked for [CLI]
someone mentioned "picocli"...
Regards,
Gilles
>
> Thanks
> Oliver
>
> [1] https://github.com/oheger/scli
> [2] https://github.com/oheger/scli/blob/master/Tutorial.adoc
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