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

In accordance with recomendation in http://www.w3.org/TR/1999/REC-html401-19991224/appendix/notes.html#h-B.2.2, the
query parameters should support encoding and decoding using & or ; as a delimiter.

Angular will consistently encode search queries using either '&' or ';' as the delimiter, with '&' being the default.
This can be configured like so:

```js
$locationProvider.queryDelimiter(';'); // any other value will be treated as '&'
```

Closes angular#6140

src/Angular.js

@@ -1021,7 +1021,7 @@ function tryDecodeURIComponent(value) {
  */
 function parseKeyValue(/**string*/keyValue) {
   var obj = {}, key_value, key;
-  forEach((keyValue || "").split('&'), function(keyValue){
+  forEach((keyValue || "").split(/[&;]/), function(keyValue){
     if ( keyValue ) {
       key_value = keyValue.split('=');
       key = tryDecodeURIComponent(key_value[0]);
@@ -1040,8 +1040,11 @@ function parseKeyValue(/**string*/keyValue) {
   return obj;
 }
 
-function toKeyValue(obj) {
+function toKeyValue(obj, delimiter) {
   var parts = [];
+  if (delimiter !== '&' && delimiter !== ';') {
+    delimiter = '&';
+  }
   forEach(obj, function(value, key) {
     if (isArray(value)) {
       forEach(value, function(arrayValue) {
@@ -1053,7 +1056,7 @@ function toKeyValue(obj) {
                (value === true ? '' : '=' + encodeUriQuery(value, true)));
     }
   });
-  return parts.length ? parts.join('&') : '';
+  return parts.length ? parts.join(delimiter) : '';
 }
 
 

src/ng/location.js

@@ -87,7 +87,7 @@ function serverBase(url) {
  * @param {string} appBase application base URL
  * @param {string} basePrefix url path prefix
  */
-function LocationHtml5Url(appBase, basePrefix) {
+function LocationHtml5Url(appBase, basePrefix, queryDelimiter) {
   this.$$html5 = true;
   basePrefix = basePrefix || '';
   var appBaseNoFile = stripFile(appBase);
@@ -120,7 +120,7 @@ function LocationHtml5Url(appBase, basePrefix) {
    * @private
    */
   this.$$compose = function() {
-    var search = toKeyValue(this.$$search),
+    var search = toKeyValue(this.$$search, queryDelimiter),
         hash = this.$$hash ? '#' + encodeUriSegment(this.$$hash) : '';
 
     this.$$url = encodePath(this.$$path) + (search ? '?' + search : '') + hash;
@@ -155,7 +155,7 @@ function LocationHtml5Url(appBase, basePrefix) {
  * @param {string} appBase application base URL
  * @param {string} hashPrefix hashbang prefix
  */
-function LocationHashbangUrl(appBase, hashPrefix) {
+function LocationHashbangUrl(appBase, hashPrefix, queryDelimiter) {
   var appBaseNoFile = stripFile(appBase);
 
   parseAbsoluteUrl(appBase, this, appBase);
@@ -227,7 +227,7 @@ function LocationHashbangUrl(appBase, hashPrefix) {
    * @private
    */
   this.$$compose = function() {
-    var search = toKeyValue(this.$$search),
+    var search = toKeyValue(this.$$search, queryDelimiter),
         hash = this.$$hash ? '#' + encodeUriSegment(this.$$hash) : '';
 
     this.$$url = encodePath(this.$$path) + (search ? '?' + search : '') + hash;
@@ -531,7 +531,8 @@ function locationGetterSetter(property, preprocess) {
  */
 function $LocationProvider(){
   var hashPrefix = '',
-      html5Mode = false;
+      html5Mode = false,
+      queryDelimiter = '&';
 
   /**
    * @ngdoc property
@@ -567,6 +568,26 @@ function $LocationProvider(){
     }
   };
 
+  /**
+   * @ngdoc property
+   * @name ng.$locationProvider#queryDelimiter
+   * @methodOf ng.$locationProvider
+   * @description
+   * @param {string=} delimiter String to use as a delimiter for query parameters. Must be '&' or
+   *   ';'
+   * @returns {*} current value if used as getter or itself (chaining) if used as setter
+   */
+  this.queryDelimiter = function(delimiter) {
+    if (arguments.length > 0) {
+      if (delimiter !== ';' && delimiter !== '&') {
+        delimiter = '&';
+      }
+      queryDelimiter = delimiter;
+      return this;
+    }
+    return queryDelimiter;
+  };
+
   /**
    * @ngdoc event
    * @name ng.$location#$locationChangeStart
@@ -611,7 +632,7 @@ function $LocationProvider(){
       appBase = stripHash(initialUrl);
       LocationMode = LocationHashbangUrl;
     }
-    $location = new LocationMode(appBase, '#' + hashPrefix);
+    $location = new LocationMode(appBase, '#' + hashPrefix, queryDelimiter);
     $location.$$parse($location.$$rewrite(initialUrl));
 
     $rootElement.on('click', function(event) {

test/ng/locationSpec.js

@@ -313,6 +313,38 @@ describe('$location', function() {
         expect(url.search()).toEqual({'i j': '<>#'});
         expect(url.hash()).toBe('x <>#');
       });
+
+
+      it('should decode query params delimited interchangeably by & and ;', function() {
+        var url = new LocationHtml5Url('http://host.com/');
+        url.$$parse('http://host.com/?foo=1&bar=2;baz=3');
+        expect(url.search()).toEqual({
+          'foo': '1',
+          'bar': '2',
+          'baz': '3'
+        });
+      });
+
+
+      it('should honor configured query param delimiter if ; --- otherwise use &', function() {
+        url = new LocationHtml5Url('http://host.com/', '#', ';');
+        url.$$parse('http://host.com/');
+        url.search({
+          "foo": "1",
+          "bar": "2",
+          "baz": "3"
+        });
+        expect(url.absUrl()).toMatch(/\?foo=1;bar=2;baz=3$/);
+
+        url = new LocationHtml5Url('http://host.com/', '#', '*');
+        url.$$parse('http://host.com/');
+        url.search({
+          "foo": "1",
+          "bar": "2",
+          "baz": "3"
+        });
+        expect(url.absUrl()).toMatch(/\?foo=1&bar=2&baz=3$/);
+      });
     });
   });
 
@@ -435,6 +467,17 @@ describe('$location', function() {
       });
 
 
+      it('should decode query params delimited interchangeably by & and ;', function() {
+        var url = new LocationHashbangUrl('http://host.com/', '#');
+        url.$$parse('http://host.com/#?foo=1&bar=2;baz=3');
+        expect(url.search()).toEqual({
+          'foo': '1',
+          'bar': '2',
+          'baz': '3'
+        });
+      });
+
+
       it('should return decoded characters for search specified with setter', function() {
         var locationUrl = new LocationHtml5Url('http://host.com/');
         locationUrl.$$parse('http://host.com/')
@@ -464,6 +507,26 @@ describe('$location', function() {
         locationUrl.search({'q': '4/5 6'});
         expect(locationUrl.absUrl()).toEqual('http://host.com?q=4%2F5%206');
       });
+
+      it('should honor configured query param delimiter if ; --- otherwise use &', function() {
+        url = new LocationHashbangUrl('http://host.com/', '#', ';');
+        url.$$parse('http://host.com/');
+        url.search({
+          "foo": "1",
+          "bar": "2",
+          "baz": "3"
+        });
+        expect(url.absUrl()).toMatch(/\?foo=1;bar=2;baz=3$/);
+
+        url = new LocationHashbangUrl('http://host.com/', '#', '*');
+        url.$$parse('http://host.com/');
+        url.search({
+          "foo": "1",
+          "bar": "2",
+          "baz": "3"
+        });
+        expect(url.absUrl()).toMatch(/\?foo=1&bar=2&baz=3$/);
+      });
     });
   });