CODEWITHSUNDEEP
command-linehaskell
vicvicvic
vicvicvic

Reputation: 6244

Subcommand utility in Haskell

Is there a simple recipe or library for creating a subcommand command line utility in Haskell?

E.g. git log for logging, git status for status et cetera. Something like Python's argparse's support for subcommands would be fantastic.

Upvotes: 4

Views: 479

Answers (3)

Thomas M. DuBuisson
Thomas M. DuBuisson

Reputation: 64740

Do you know about hackage? Just look for args and you see cmdargs (easy to use, arguably the most popular solution), parseargs (less magic, might actually work with a non-GHC compiler, also easy to use), and simpleargs (I've not used this one). Others are probably out there, but you should look at the haddock documents and decide which one seems most fitting for your needs.

Upvotes: 1

Ionuț G. Stan
Ionuț G. Stan

Reputation: 179179

I haven't used it myself yet, but take a look at the CmdArgs package.

Upvotes: 5

mike3996
mike3996

Reputation: 17537

Write one simple main application that only checks for its first argument string, and delecates basing on that. It will pass the subsequent arguments to the program that actually handles the requests (the log or status). Group common functionality in modules to be available and you already have a tidy framework to write new "modules" as they sometimes are called.

Upvotes: 0

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