gravatar link generator

gistfile1.js

#!/usr/bin/env node

var email = process.argv[2];
var crypto = require('crypto');

function trim (str) {
	var	str = str.replace(/^\s\s*/, ''),
		ws = /\s/,
		i = str.length;
	while (ws.test(str.charAt(--i)));
	return str.slice(0, i + 1);
}

if(process.argv.length !== 3){
  	console.log("usage: gravatar <email>");
}else{
	var md5sum = crypto.createHash('md5');
	md5sum.update(trim(email).toLowerCase());
	var hash = md5sum.digest('hex');
  	console.log("http://www.gravatar.com/avatar/" + hash);	
}