Popularity
7.4
Stable
Activity
0.0
Stable
23
5
4

Monthly Downloads: 38
Programming language: Haskell
License: BSD 3-clause "New" or "Revised" License
Tags: Utils     CLI     Command Line    
Latest version: v0.2.0

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README

cli

Build Status BSD Haskell

Documentation: cli on hackage

Option parser in DSL form, and display utilities for command line interfaces.

Option Parsing

Basic program looks like:

defaultMain $ do
    f1 <- flag ..
    f2 <- argument ..
    action $ \toParam ->
        something (toParam f1) (toParam f2) ..

with subcommands:

defaultMain $ do
    subcommand "foo" $ do
       <..flags & parameters definitions...>
       action $ \toParam -> <..IO-action..>
    subcommand "bar" $ do
       <..flags & parameters definitions...>
       action $ \toParam -> <..IO-action..>

A Real Example:

main = defaultMain $ do
    programName "test-cli"
    programDescription "test CLI program"
    flagA    <- flag $ FlagShort 'a' <> FlagLong "aaa"
    allArgs  <- remainingArguments "FILE"
    action $ \toParam -> do
        putStrLn $ "using flag A : " ++ show (toParam flagA)
        putStrLn $ "args: " ++ show (toParam allArgs)

License

The source code of cli is available under the BSD 3-Clause license, see LICENSE for more information.


*Note that all licence references and agreements mentioned in the cli README section above are relevant to that project's source code only.