/**
* Append query to a url string.
* @function lib.url.appendQuery
* @param {string} urlString - Url string to append query.
* @param {object} data - Query data.
* @author Taka Okunishi
*
*/
var qs = require('querystring'),
url = require('url'),
object = require('../object'),
copy = object.copy;
module.exports = function (urlString, data) {
var urlData = url.parse(urlString),
queryData = qs.parse(urlData.query) || {};
return url.format({
protocol: urlData.protocol,
auth: urlData.auth,
host: urlData.host,
hash: urlData.hash,
pathname: urlData.pathname,
search: qs.stringify(copy(data, queryData))
});
};