Git deploy NodeJS script

post-receive

#!/usr/bin/env node

var fs = require('fs'),
	path = require('path'),
	child = require('child_process'),

	argf = '',
	deployDir = '/home/morrelinko/socialinko';

process.stdin.resume();
process.stdin.setEncoding('utf8');
process.stdin.on('data', function(data) {
	argf += data;
});

process.stdin.on('end', function () {
	argf = argf.trim().split(' ');
	var fromCommit = argf[0],
  toCommit = argf[1],
  branch = argf[2];

  // Ensure we only deploy if master branch is pushed
	if (/master$/.test(branch) == false) {
	  console.log(['Received branch', branch, ', not deploying.'].join(' '));
	  process.exit;
	}

	// Copy files to the deploy directory
	child.exec('git --work-tree ' + deployDir + ' checkout -f master', function(error, stdout, stderr) {
	  if (error) {
	    console.log('DEPLOY: An error occured: ', error.message || error);
	    return process.exit();
	  }

	  console.log('DEPLOY: <master>(' + toCommit + ' copied to ' + deployDir);
	});
});

This is a NodeJs port of the Ruby code used in this blog post
http://krisjordan.com/essays/setting-up-push-to-deploy-with-git