fix(json): added support for iso8061 timezone

Added support of timezone in dates not just zulu timezone.

This fixes issues for date filter which uses json deserialization under the hood. (for now)

Closes #/800

Author: mhevery

src/Angular.js

@@ -73,8 +73,7 @@ var $boolean          = 'boolean',
     angularModule,
     /** @name angular.module.ng */
     nodeName_,
-    uid               = ['0', '0', '0'],
-    DATE_ISOSTRING_LN = 24;
+    uid               = ['0', '0', '0'];
 
 /**
  * @ngdoc function

src/JSON.js

@@ -47,7 +47,7 @@ function fromJson(json, useNative) {
   // TODO make forEach optionally recursive and remove this function
   // TODO(misko): remove this once the $http service is checked in.
   function transformDates(obj) {
-    if (isString(obj) && obj.length === DATE_ISOSTRING_LN) {
+    if (isString(obj) && 15 <= obj.length && obj.length <= 24) {
       return jsonStringToDate(obj);
     } else if (isArray(obj) || isObject(obj)) {
       forEach(obj, function(val, name) {
@@ -58,16 +58,25 @@ function fromJson(json, useNative) {
   }
 }
 
-var R_ISO8061_STR = /^(\d{4})-(\d\d)-(\d\d)(?:T(\d\d)(?:\:(\d\d)(?:\:(\d\d)(?:\.(\d{3}))?)?)?Z)?$/;
+var R_ISO8061_STR = /^(\d{4})-?(\d\d)-?(\d\d)(?:T(\d\d)(?:\:?(\d\d)(?:\:?(\d\d)(?:\.(\d{3}))?)?)?(Z|([+-])(\d\d):?(\d\d)))?$/;
 function jsonStringToDate(string){
   var match;
-  if (isString(string) && (match = string.match(R_ISO8061_STR))){
-    var date = new Date(0);
-    date.setUTCFullYear(match[1], match[2] - 1, match[3]);
-    date.setUTCHours(match[4]||0, match[5]||0, match[6]||0, match[7]||0);
+  if (match = string.match(R_ISO8061_STR)) {
+    var date = new Date(0),
+        tzHour = 0,
+        tzMin  = 0;
+    if (match[9]) {
+      tzHour = int(match[9] + match[10]);
+      tzMin = int(match[9] + match[11]);
+    }
+    date.setUTCFullYear(int(match[1]), int(match[2]) - 1, int(match[3]));
+    date.setUTCHours(int(match[4]||0) - tzHour, int(match[5]||0) - tzMin, int(match[6]||0), int(match[7]||0));
     return date;
   }
   return string;
+  function int(str) {
+    return parseInt(str, 10);
+  }
 }
 
 function jsonDateToString(date){

test/JsonSpec.js

@@ -220,42 +220,44 @@ describe('json', function() {
   });
 
 
-  it('should read/write to date', function() {
-    var date = new Date('Sep 10 2003 13:02:03 GMT');
-    expect(jsonDateToString(date)).toBe('2003-09-10T13:02:03.000Z');
-    expect(jsonStringToDate(jsonDateToString(date)).getTime()).toBe(date.getTime());
-  });
+  describe('iso 8061 date', function() {
+    it('should read/write to date', function() {
+      var date = new Date('Sep 10 2003 13:02:03 GMT');
+      expect(jsonDateToString(date)).toBe('2003-09-10T13:02:03.000Z');
+      expect(jsonStringToDate(jsonDateToString(date)).getTime()).toBe(date.getTime());
+    });
 
 
-  it('should convert to date', function() {
-    //full ISO8061
-    expect(jsonStringToDate('2003-09-10T13:02:03.000Z')).
-      toEqual(new Date('Sep 10 2003 13:02:03 GMT'));
+    it('should convert to date', function() {
+      //full ISO8061
+      expect(jsonStringToDate('2003-09-10T13:02:03.000Z')).toEqual(new Date('Sep 10 2003 13:02:03 GMT'));
 
-    //no millis
-    expect(jsonStringToDate('2003-09-10T13:02:03Z')).
-      toEqual(new Date('Sep 10 2003 13:02:03 GMT'));
+      expect(jsonStringToDate('2003-09-10T13:02:03.000+00:00')).toEqual(new Date('Sep 10 2003 13:02:03 GMT'));
 
-    //no seconds
-    expect(jsonStringToDate('2003-09-10T13:02Z')).
-      toEqual(new Date('Sep 10 2003 13:02:00 GMT'));
+      expect(jsonStringToDate('20030910T033203-0930')).toEqual(new Date('Sep 10 2003 13:02:03 GMT'));
 
-    //no minutes
-    expect(jsonStringToDate('2003-09-10T13Z')).
-      toEqual(new Date('Sep 10 2003 13:00:00 GMT'));
+      //no millis
+      expect(jsonStringToDate('2003-09-10T13:02:03Z')).toEqual(new Date('Sep 10 2003 13:02:03 GMT'));
 
-    //no time
-    expect(jsonStringToDate('2003-09-10')).
-      toEqual(new Date('Sep 10 2003 00:00:00 GMT'));
-  });
+      //no seconds
+      expect(jsonStringToDate('2003-09-10T13:02Z')).toEqual(new Date('Sep 10 2003 13:02:00 GMT'));
 
+      //no minutes
+      expect(jsonStringToDate('2003-09-10T13Z')).toEqual(new Date('Sep 10 2003 13:00:00 GMT'));
 
-  it('should parse date', function() {
-    var date = jsonStringToDate('2003-09-10T13:02:03.000Z');
-    expect(jsonDateToString(date)).toBe('2003-09-10T13:02:03.000Z');
-    expect(jsonStringToDate('str')).toBe('str');
-  });
+      //no time
+      expect(jsonStringToDate('2003-09-10')).toEqual(new Date('Sep 10 2003 00:00:00 GMT'));
 
+      expect(jsonStringToDate('2011-12-28T13:02:09-08:00')).toEqual(new Date('Dec 28 2011 21:02:09 GMT'));
+    });
+
+
+    it('should parse date', function() {
+      var date = jsonStringToDate('2003-09-10T13:02:03.000Z');
+      expect(jsonDateToString(date)).toBe('2003-09-10T13:02:03.000Z');
+      expect(jsonStringToDate('str')).toBe('str');
+    });
+  });
 
   describe('string', function() {
     it('should quote', function() {