feat($location): parse query parameters delimited by ; or & angular#6167

According to RFC (http://www.w3.org/TR/1999/REC-html401-19991224/appendix/notes.html#h-B.2.2)
location should match either ';' OR '&', but not both at the same time.

Closes angular#6140

src/Angular.js

@@ -1055,9 +1055,10 @@ function tryDecodeURIComponent(value) {
  * Parses an escaped url query string into key-value pairs.
  * @returns Object.<(string|boolean)>
  */
-function parseKeyValue(/**string*/keyValue) {
+function parseKeyValue(/**string*/keyValue, delimiter) {
+  delimiter = delimiter === ';' ? delimiter : '&';
   var obj = {}, key_value, key;
-  forEach((keyValue || "").split(/[&;]/), function(keyValue){
+  forEach((keyValue || "").split(delimiter), function(keyValue){
     if ( keyValue ) {
       key_value = keyValue.split('=');
       key = tryDecodeURIComponent(key_value[0]);

src/ng/location.js

@@ -39,7 +39,7 @@ function parseAppUrl(relativeUrl, locationObj, appBase) {
   var match = urlResolve(relativeUrl, appBase);
   locationObj.$$path = decodeURIComponent(prefixed && match.pathname.charAt(0) === '/' ?
       match.pathname.substring(1) : match.pathname);
-  locationObj.$$search = parseKeyValue(match.search);
+  locationObj.$$search = parseKeyValue(match.search, locationObj.$$queryDelimiter);
   locationObj.$$hash = decodeURIComponent(match.hash);
 
   // make sure path starts with '/';
@@ -90,6 +90,7 @@ function serverBase(url) {
 function LocationHtml5Url(appBase, basePrefix, queryDelimiter) {
   this.$$html5 = true;
   basePrefix = basePrefix || '';
+  this.$$queryDelimiter = queryDelimiter;
   var appBaseNoFile = stripFile(appBase);
   parseAbsoluteUrl(appBase, this, appBase);
 
@@ -120,7 +121,7 @@ function LocationHtml5Url(appBase, basePrefix, queryDelimiter) {
    * @private
    */
   this.$$compose = function() {
-    var search = toKeyValue(this.$$search, queryDelimiter),
+    var search = toKeyValue(this.$$search, this.$$queryDelimiter),
         hash = this.$$hash ? '#' + encodeUriSegment(this.$$hash) : '';
 
     this.$$url = encodePath(this.$$path) + (search ? '?' + search : '') + hash;
@@ -157,6 +158,7 @@ function LocationHtml5Url(appBase, basePrefix, queryDelimiter) {
  */
 function LocationHashbangUrl(appBase, hashPrefix, queryDelimiter) {
   var appBaseNoFile = stripFile(appBase);
+  this.$$queryDelimiter = queryDelimiter;
 
   parseAbsoluteUrl(appBase, this, appBase);
 
@@ -227,7 +229,7 @@ function LocationHashbangUrl(appBase, hashPrefix, queryDelimiter) {
    * @private
    */
   this.$$compose = function() {
-    var search = toKeyValue(this.$$search, queryDelimiter),
+    var search = toKeyValue(this.$$search, this.$$queryDelimiter),
         hash = this.$$hash ? '#' + encodeUriSegment(this.$$hash) : '';
 
     this.$$url = encodePath(this.$$path) + (search ? '?' + search : '') + hash;
@@ -287,6 +289,12 @@ LocationHashbangInHtml5Url.prototype =
    */
   $$replace: false,
 
+  /**
+   * Allows using ";" instead of "&" to separate query string arguments
+   * @private
+   */
+  $$queryDelimiter: '&',
+
   /**
    * @ngdoc method
    * @name $location#absUrl
@@ -415,7 +423,7 @@ LocationHashbangInHtml5Url.prototype =
         return this.$$search;
       case 1:
         if (isString(search)) {
-          this.$$search = parseKeyValue(search);
+          this.$$search = parseKeyValue(search, this.$$queryDelimiter);
         } else if (isObject(search)) {
           this.$$search = search;
         } else {

test/ng/locationSpec.js

@@ -316,12 +316,18 @@ describe('$location', function() {
 
 
       it('should decode query params delimited interchangeably by & and ;', function() {
-        var url = new LocationHtml5Url('http://host.com/');
-        url.$$parse('http://host.com/?foo=1&bar=2;baz=3');
+        var url = new LocationHashbangUrl('http://host.com/', '#');
+        url.$$parse('http://host.com/#?foo=1&bar=2;baz');
         expect(url.search()).toEqual({
           'foo': '1',
-          'bar': '2',
-          'baz': '3'
+          'bar': '2;baz'
+        });
+
+        url = new LocationHashbangUrl('http://host.com/', '#', ';');
+        url.$$parse('http://host.com/#?foo=1&bar=2;baz');
+        expect(url.search()).toEqual({
+          'foo': '1&bar',
+          'baz': true
         });
       });
 
@@ -469,11 +475,17 @@ describe('$location', function() {
 
       it('should decode query params delimited interchangeably by & and ;', function() {
         var url = new LocationHashbangUrl('http://host.com/', '#');
-        url.$$parse('http://host.com/#?foo=1&bar=2;baz=3');
+        url.$$parse('http://host.com/#?foo=1&bar=2;baz');
         expect(url.search()).toEqual({
           'foo': '1',
-          'bar': '2',
-          'baz': '3'
+          'bar': '2;baz'
+        });
+
+        url = new LocationHashbangUrl('http://host.com/', '#', ';');
+        url.$$parse('http://host.com/#?foo=1&bar=2;baz');
+        expect(url.search()).toEqual({
+          'foo': '1&bar',
+          'baz': true
         });
       });