simple-cli-parser

simple-cli-parser

A simple parser for a spawning child_process, with promises.

Install

npm install simple-cli-parser --save

Usage

To see the result of ls -la.

'use strict';

const cli = require('simple-cli-parser');

let ls = new cli([ 'ls', '-la', __dirname ])
    .then(res => { console.log('Success!', res); })
    .catch(err => { console.log('Failed!'); });

To stream the result of a curl download (to check current percentage).

'use strict';

const cli = require('simple-cli-parser'),
    currentPercentage = data => { // Optional function for checking status
        let percent = parseFloat(data, 10);
        if (!isNaN(percent) && percent > 0){ console.log(percent + '%'); }
    };

let download = new cli([ 'curl', '-O', 'http://speedtest.ftp.otenet.gr/files/test10Mb.db', '-#' ], currentPercentage)
    .then(res => { console.log('Success!', res); })
    .catch(err => { console.log('Failed!'); });

To pass options (https://nodejs.org/api/child_process.html)

'use strict';

const cli = require('simple-cli-parser');

let ls = new cli([ 'git', 'branch', '-a' ], null, { cwd: '/repos/app' })
    .then(res => { console.log('Success!', res); })
    .catch(err => { console.log('Failed!'); });