cmdargs
Command line argument processing
http://community.haskell.org/~ndm/cmdargs/
| Version on this page: | 0.10.13@rev:3 |
| LTS Haskell 22.39: | 0.10.22 |
| Stackage Nightly 2024-10-31: | 0.10.22 |
| Latest on Hackage: | 0.10.22 |
cmdargs-0.10.13@sha256:799e42c3b94bccb215ca17a01e4405975935c0522a829898fc0ede75f281e5e2,4124Module documentation for 0.10.13
CmdArgs: Easy Command Line Processing 
sample = Sample{hello = def &= help “World argument” &= opt “world”} &= summary “Sample v1”
main = print =<< cmdArgs sample
$ runhaskell Sample.hs –help Sample v1, (C) Neil Mitchell 2009
sample [FLAG]
-? –help[=FORMAT] Show usage information (optional format) -V –version Show version information -v –verbose Higher verbosity -q –quiet Lower verbosity -h –hello=VALUE World argument (default=world)
{-# LANGUAGE DeriveDataTypeable #-}
module Sample where
import System.Console.CmdArgs
data Sample = Sample {hello :: String}
deriving (Show, Data, Typeable)
sample = Sample{hello = def}
main = print =<< cmdArgs sample
$ runhaskell Sample.hs –version The sample program
$ runhaskell Sample.hs –help The sample program
sample [OPTIONS]
-? –help Display help message -V –version Print version information -h –hello=ITEM
data Sample = Hello {whom :: String}
| Goodbye
deriving (Show, Data, Typeable)
hello = Hello{whom = def}
goodbye = Goodbye
main = print =<< cmdArgs (modes [hello,goodbye])
$ runhaskell Sample.hs goodbye Goodbye
$ runhaskell Sample.hs –help The sample program
sample [OPTIONS]
Common flags -? –help Display help message -V –version Print version information
sample hello [OPTIONS]
-w –whom=ITEM
sample goodbye [OPTIONS]
HLint v0.0.0, (C) Neil Mitchell
hlint [OPTIONS] [FILES/DIRS]
Suggest improvements to Haskell source code
Common flags:
-r --report[=FILE] Generate a report in HTML
-h --hint=FILE Hint/ignore file to use
-c --colour --color Color the output (requires ANSI terminal)
-i --ignore=MESSAGE Ignore a particular hint
-s --show Show all ignored ideas
--extension=EXT File extensions to search (defaults to hs and lhs)
-X --language=LANG Language extension (Arrows, NoCPP)
-u --utf8 Use UTF-8 text encoding
--encoding=ENC Choose the text encoding
-f --find=FILE Find hints in a Haskell file
-t --test Run in test mode
-d --datadir=DIR Override the data directory
--cpp-define=NAME[=VALUE] CPP #define
--cpp-include=DIR CPP include path
-? --help Display help message
-V --version Print version information
-v --verbose Loud verbosity
-q --quiet Quiet verbosity
Hlint gives hints on how to improve Haskell code
To check all Haskell files in 'src' and generate a report type:
hlint src --report
Diffy v1.0
diffy [COMMAND] ... [OPTIONS]
Create and compare differences
Common flags:
-o --out=FILE Output file
-? --help Display help message
-V --version Print version information
diffy create [OPTIONS]
Create a fingerprint
-s --src=DIR Source directory
diffy diff [OPTIONS] OLDFILE NEWFILE
Perform a diff
Maker v1.0
Make it
maker [COMMAND] ... [OPTIONS]
Build helper program
Common flags:
-? --help Display help message
-V --version Print version information
maker [build] [OPTIONS] [ITEM]
Build the project
-j --threads=NUM Number of threads to use
-r --release Release build
-d --debug Debug build
-p --profile Profile build
maker wipe [OPTIONS]
Clean all build objects
maker test [OPTIONS] [ANY]
Run the test suite
-j --threads=NUM Number of threads to use