unparse-args

unparse-args

A Node module to help you unparse parsed arguments back to the original argv array or a command string.

This module will:

• unparse parsed arguments back to an argv array
• easily regenerate a command string based on the unparsed array
• work with yargs, minimist, and subarg (also handles subcontexts)

Use Scenario

Imagine a hypothetical command string with flags, subcommands, options... etc:

node example.js another --number 297261 -t something -x 'something longer than just 1 word' -a -e

Popular argument parsing modules for Node: yargs, subarg, and minimist all parse these into an object like:

var args = { 
    _: [ 'node', '/Users/arjun/example/example.js', 'another' ],
    number: 297261,
    t: 'something',
    x: 'something longer than just 1 word',
    a: true,
    e: true
};

But we might want to manipulate it and flatten it out again to be like:

['node', '/Users/arjun/example/example.js', 'another', '--number', '297261', '-t', 'something', '-x', 'something longer than just 1 word', '-a', '-e']

Installation

npm install --save unparse-args

Basic Usage

Include

var unparse = require('unparse-args');

Assume some parsed arguments.

var parsed = subarg(process.argv);
// OR
var parsed = minimist(process.argv);
// OR
var parsed = yargs.parse(process.argv);

Unparse Parsed Arguments

Easily unparse them into an array.

var unparsed = unparse(parsed)
console.log(unparsed); // ['node', 'example.js', 'another', '--number', '297261', '-t', 'something', '-x', 'something longer than just 1 word', '-a', '-e']

Convert Arg Array to Command String

var command_string = unparsed.command_string;
console.log(command_string); // node example.js another --number 297261 -t something -x 'something longer than just 1 word' -a -e

I know I know, unparsed is an array, so how can it have a property?? Magic.

License

The MIT License (MIT) Copyright (c) 2014 Arjun Mehta