--- /dev/null
+'use strict'
+
+var qs = require('qs')
+ , querystring = require('querystring')
+
+
+function Querystring (request) {
+ this.request = request
+ this.lib = null
+ this.useQuerystring = null
+ this.parseOptions = null
+ this.stringifyOptions = null
+}
+
+Querystring.prototype.init = function (options) {
+ if (this.lib) {return}
+
+ this.useQuerystring = options.useQuerystring
+ this.lib = (this.useQuerystring ? querystring : qs)
+
+ this.parseOptions = options.qsParseOptions || {}
+ this.stringifyOptions = options.qsStringifyOptions || {}
+}
+
+Querystring.prototype.stringify = function (obj) {
+ return (this.useQuerystring)
+ ? this.rfc3986(this.lib.stringify(obj,
+ this.stringifyOptions.sep || null,
+ this.stringifyOptions.eq || null,
+ this.stringifyOptions))
+ : this.lib.stringify(obj, this.stringifyOptions)
+}
+
+Querystring.prototype.parse = function (str) {
+ return (this.useQuerystring)
+ ? this.lib.parse(str,
+ this.parseOptions.sep || null,
+ this.parseOptions.eq || null,
+ this.parseOptions)
+ : this.lib.parse(str, this.parseOptions)
+}
+
+Querystring.prototype.rfc3986 = function (str) {
+ return str.replace(/[!'()*]/g, function (c) {
+ return '%' + c.charCodeAt(0).toString(16).toUpperCase()
+ })
+}
+
+Querystring.prototype.unescape = querystring.unescape
+
+exports.Querystring = Querystring