urlParse.js

var url = require("url");

function parseConnectionString(str) {
    var result = url.parse(str);
    result.host = result.hostname;
    result.database = result.pathname ? result.pathname.slice(1) : null;
    var auth = (result.auth || ':').split(':');
    result.user = auth[0];
    result.password = auth[1];
    return result;
}

console.log(parseConnectionString("pg://blub:asdfdg?@testing.org/database"));
console.log(parseConnectionString("pg://blub:asdfdg%3f@testing.org/database"));