Added client-side support. Closes tj#33

Makefile

@@ -1,7 +1,9 @@
 
+querystring.js: lib/head.js lib/querystring.js lib/tail.js
+	cat $^ > $@ 
+
 test:
 	@./node_modules/.bin/mocha \
-		--require should \
 		--ui bdd
 
 .PHONY: test

lib/head.js

@@ -0,0 +1 @@
+(function(exports){

lib/tail.js

@@ -0,0 +1 @@
+})('undefined' == typeof exports ? qs = {} : exports);

querystring.js

@@ -0,0 +1,265 @@
+(function(exports){
+/*!
+ * querystring
+ * Copyright(c) 2010 TJ Holowaychuk <tj@vision-media.ca>
+ * MIT Licensed
+ */
+
+/**
+ * Library version.
+ */
+
+exports.version = '0.4.2';
+
+/**
+ * Object#toString() ref for stringify().
+ */
+
+var toString = Object.prototype.toString;
+
+/**
+ * Cache non-integer test regexp.
+ */
+
+var isint = /^[0-9]+$/;
+
+function promote(parent, key) {
+  if (parent[key].length == 0) return parent[key] = {};
+  var t = {};
+  for (var i in parent[key]) t[i] = parent[key][i];
+  parent[key] = t;
+  return t;
+}
+
+function parse(parts, parent, key, val) {
+  var part = parts.shift();
+  // end
+  if (!part) {
+    if (Array.isArray(parent[key])) {
+      parent[key].push(val);
+    } else if ('object' == typeof parent[key]) {
+      parent[key] = val;
+    } else if ('undefined' == typeof parent[key]) {
+      parent[key] = val;
+    } else {
+      parent[key] = [parent[key], val];
+    }
+    // array
+  } else {
+    var obj = parent[key] = parent[key] || [];
+    if (']' == part) {
+      if (Array.isArray(obj)) {
+        if ('' != val) obj.push(val);
+      } else if ('object' == typeof obj) {
+        obj[Object.keys(obj).length] = val;
+      } else {
+        obj = parent[key] = [parent[key], val];
+      }
+      // prop
+    } else if (~part.indexOf(']')) {
+      part = part.substr(0, part.length - 1);
+      if (!isint.test(part) && Array.isArray(obj)) obj = promote(parent, key);
+      parse(parts, obj, part, val);
+      // key
+    } else {
+      if (!isint.test(part) && Array.isArray(obj)) obj = promote(parent, key);
+      parse(parts, obj, part, val);
+    }
+  }
+}
+
+/**
+ * Merge parent key/val pair.
+ */
+
+function merge(parent, key, val){
+  if (~key.indexOf(']')) {
+    var parts = key.split('[')
+      , len = parts.length
+      , last = len - 1;
+    parse(parts, parent, 'base', val);
+    // optimize
+  } else {
+    if (!isint.test(key) && Array.isArray(parent.base)) {
+      var t = {};
+      for (var k in parent.base) t[k] = parent.base[k];
+      parent.base = t;
+    }
+    set(parent.base, key, val);
+  }
+
+  return parent;
+}
+
+/**
+ * Parse the given obj.
+ */
+
+function parseObject(obj){
+  var ret = { base: {} };
+  Object.keys(obj).forEach(function(name){
+    merge(ret, name, obj[name]);
+  });
+  return ret.base;
+}
+
+/**
+ * Parse the given str.
+ */
+
+function parseString(str){
+  return String(str)
+    .split('&')
+    .reduce(function(ret, pair){
+      try{
+        pair = decodeURIComponent(pair.replace(/\+/g, ' '));
+      } catch(e) {
+        // ignore
+      }
+
+      var eql = pair.indexOf('=')
+        , brace = lastBraceInKey(pair)
+        , key = pair.substr(0, brace || eql)
+        , val = pair.substr(brace || eql, pair.length)
+        , val = val.substr(val.indexOf('=') + 1, val.length);
+
+      // ?foo
+      if ('' == key) key = pair, val = '';
+
+      return merge(ret, key, val);
+    }, { base: {} }).base;
+}
+
+/**
+ * Parse the given query `str` or `obj`, returning an object.
+ *
+ * @param {String} str | {Object} obj
+ * @return {Object}
+ * @api public
+ */
+
+exports.parse = function(str){
+  if (null == str || '' == str) return {};
+  return 'object' == typeof str
+    ? parseObject(str)
+    : parseString(str);
+};
+
+/**
+ * Turn the given `obj` into a query string
+ *
+ * @param {Object} obj
+ * @return {String}
+ * @api public
+ */
+
+var stringify = exports.stringify = function(obj, prefix) {
+  if (Array.isArray(obj)) {
+    return stringifyArray(obj, prefix);
+  } else if ('[object Object]' == toString.call(obj)) {
+    return stringifyObject(obj, prefix);
+  } else if ('string' == typeof obj) {
+    return stringifyString(obj, prefix);
+  } else {
+    return prefix + '=' + obj;
+  }
+};
+
+/**
+ * Stringify the given `str`.
+ *
+ * @param {String} str
+ * @param {String} prefix
+ * @return {String}
+ * @api private
+ */
+
+function stringifyString(str, prefix) {
+  if (!prefix) throw new TypeError('stringify expects an object');
+  return prefix + '=' + encodeURIComponent(str);
+}
+
+/**
+ * Stringify the given `arr`.
+ *
+ * @param {Array} arr
+ * @param {String} prefix
+ * @return {String}
+ * @api private
+ */
+
+function stringifyArray(arr, prefix) {
+  var ret = [];
+  if (!prefix) throw new TypeError('stringify expects an object');
+  for (var i = 0; i < arr.length; i++) {
+    ret.push(stringify(arr[i], prefix + '['+i+']'));
+  }
+  return ret.join('&');
+}
+
+/**
+ * Stringify the given `obj`.
+ *
+ * @param {Object} obj
+ * @param {String} prefix
+ * @return {String}
+ * @api private
+ */
+
+function stringifyObject(obj, prefix) {
+  var ret = []
+    , keys = Object.keys(obj)
+    , key;
+
+  for (var i = 0, len = keys.length; i < len; ++i) {
+    key = keys[i];
+    ret.push(stringify(obj[key], prefix
+      ? prefix + '[' + encodeURIComponent(key) + ']'
+      : encodeURIComponent(key)));
+  }
+
+  return ret.join('&');
+}
+
+/**
+ * Set `obj`'s `key` to `val` respecting
+ * the weird and wonderful syntax of a qs,
+ * where "foo=bar&foo=baz" becomes an array.
+ *
+ * @param {Object} obj
+ * @param {String} key
+ * @param {String} val
+ * @api private
+ */
+
+function set(obj, key, val) {
+  var v = obj[key];
+  if (undefined === v) {
+    obj[key] = val;
+  } else if (Array.isArray(v)) {
+    v.push(val);
+  } else {
+    obj[key] = [v, val];
+  }
+}
+
+/**
+ * Locate last brace in `str` within the key.
+ *
+ * @param {String} str
+ * @return {Number}
+ * @api private
+ */
+
+function lastBraceInKey(str) {
+  var len = str.length
+    , brace
+    , c;
+  for (var i = 0; i < len; ++i) {
+    c = str[i];
+    if (']' == c) brace = false;
+    if ('[' == c) brace = true;
+    if ('=' == c && !brace) return i;
+  }
+}
+})('undefined' == typeof exports ? qs = {} : exports);