Argumentr

command line argument parser for node.js with bells and whistles

Usage sample

var argumentr = require("./argumentr")
function showarg (arg) { console.log(arg) }
var options = {}

// argumentr.banner = "Usage: ..."
// for --help output
// argumentr.start = 30
// argumentr.stop  = 79
argumentr.on("-a","short arg",showarg) // function
argumentr.on("--long-arg","sample for long argument",options) // hash object
argumentr.on("--optional [optarg]","optional argument",options)
argumentr.on("--mandatory arg","mandatory argument",options)
argumentr.on("--switch","try --no-switch",options)
argumentr.on("-v","--version","show version information",function() {console.log("version 1.0"); process.exit(0)})

var ret = argumentr.parse()
if (! ret.ok) {
	console.log(ret.msg)
	process.exit(-1)
}
// extra commands are now in argumentr.extra
// set options are now in the options hash

Now you can run your sample with:

./sample -a --long-arg --optional this_is_optional foo bar baz

For free:

./sample --help:
Usage: sample [parameter] command 
-h, --help                   Show this help
-a                           short arg
    --long-arg               sample for long argument
    --optional [=optarg]     optional argument
    --mandatory=arg          mandatory argument
    --switch                 try --no-switch
-v, --version                show version information