elerium-commands

Command line parsing tool

npm install elerium-commands
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Command line parsing tool for Node.js.

Usage

Here is an example usage:

var commands = require('commands');

var configuration = commands.parse({
    parameter: {},
    short: {
        shortcut: 's'
    },
    switch: {}
}, ['--parameter', 'foo', '-s', 'bar', --switch]); // {parameter: foo, short: bar, switch: true}

Rules

Parameter prefix is '--' (two dashes) and rules names are written without it. Every rule should have default value and shortcut for parameter.

Default value is used if argument is empty or undefined.

var rules = {
    foo: {
        default: 'bar'
    }
}

commands.parse(rules, ['--foo']); // {foo: 'bar'}

Shortcut is only alias for parameter and is prefixed by '-' (dash).

var rules = {
    foo: {
        shortcut: 'f'
    }
}

commands.parse(rules, ['-f', 'bar']); // {foo: 'bar'}

Help generating

You can also generate help message:

var rules = {
    foo: {
        shortcut: 'f',
        description: 'I\'m foo!'
    },
    foobar: {
        shortcut: 'b',
        description: 'I\'m foobar!'
    }
}

commands.help(rules);

Result will be:

--foo, -f    I'm foo!
--foobar, -b I'm foobar!
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