feat(dateparser): add M! and d! support

- Add M! and d! for optional support of leading zeroes in date string format

Closes #4805
Closes #4809

Author: wesleycho

src/dateparser/dateparser.js

@@ -25,6 +25,10 @@ angular.module('ui.bootstrap.dateparser', [])
         regex: '\\d{1,4}',
         apply: function(value) { this.year = +value; }
       },
+      'M!': {
+        regex: '0?[1-9]|1[0-2]',
+        apply: function(value) { this.month = value - 1; }
+      },
       'MMMM': {
         regex: $locale.DATETIME_FORMATS.MONTH.join('|'),
         apply: function(value) { this.month = $locale.DATETIME_FORMATS.MONTH.indexOf(value); }
@@ -41,6 +45,10 @@ angular.module('ui.bootstrap.dateparser', [])
         regex: '[1-9]|1[0-2]',
         apply: function(value) { this.month = value - 1; }
       },
+      'd!': {
+        regex: '[0-2]?[0-9]{1}|3[0-1]{1}',
+        apply: function(value) { this.date = +value; }
+      },
       'dd': {
         regex: '[0-2][0-9]{1}|3[0-1]{1}',
         apply: function(value) { this.date = +value; }

src/dateparser/docs/README.md

@@ -53,14 +53,22 @@ Certain format codes support i18n. Check this [guide](https://docs.angularjs.org
 * `M`
   _(Example: `3`)_ -
   Parses a numeric month.
-  
+
+* `M!`
+  _(Example: `3` or `03`)_ -
+  Parses a numeric month, but allowing an optional leading zero
+
 * `dd`
   _(Example: `05`, Leading 0)_ -
   Parses a numeric day.
 
 * `d`
   _(Example: `5`)_ -
   Parses a numeric day.
+
+* `d!`
+  _(Example: `3` or `03`)_ -
+  Parses a numeric day, but allowing an optional leading zero
 
 * `EEEE`
   _(Example: `Sunday`, i18n support)_ -

src/dateparser/test/dateparser.spec.js

@@ -66,6 +66,22 @@ describe('date parser', function() {
       expectParse('02-5-11', 'dd-M-yy', new Date(2011, 4, 2, 0));
     });
 
+    it('should work correctly for `M!`', function() {
+      expectParse('8/11/2013', 'M!/dd/yyyy', new Date(2013, 7, 11, 0));
+      expectParse('07.11.05', 'dd.M!.yy', new Date(2005, 10, 7, 0));
+      expectParse('02-5-11', 'dd-M!-yy', new Date(2011, 4, 2, 0));
+      expectParse('2/05/1980', 'M!/dd/yyyy', new Date(1980, 1, 5, 0));
+      expectParse('1955/2/05', 'yyyy/M!/dd', new Date(1955, 1, 5, 0));
+      expectParse('02-5-11', 'dd-M!-yy', new Date(2011, 4, 2, 0));
+
+      expectParse('08/11/2013', 'M!/dd/yyyy', new Date(2013, 7, 11, 0));
+      expectParse('07.11.05', 'dd.M!.yy', new Date(2005, 10, 7, 0));
+      expectParse('02-05-11', 'dd-M!-yy', new Date(2011, 4, 2, 0));
+      expectParse('02/05/1980', 'M!/dd/yyyy', new Date(1980, 1, 5, 0));
+      expectParse('1955/02/05', 'yyyy/M!/dd', new Date(1955, 1, 5, 0));
+      expectParse('02-05-11', 'dd-M!-yy', new Date(2011, 4, 2, 0));
+    });
+
     it('should work correctly for `d`', function() {
       expectParse('17.November.13', 'd.MMMM.yy', new Date(2013, 10, 17, 0));
       expectParse('8-March-1991', 'd-MMMM-yyyy', new Date(1991, 2, 8, 0));
@@ -74,6 +90,20 @@ describe('date parser', function() {
       expectParse('11-08-13', 'd-MM-yy', new Date(2013, 7, 11, 0));
     });
 
+    it('should work correctly for `d!`', function() {
+      expectParse('17.November.13', 'd!.MMMM.yy', new Date(2013, 10, 17, 0));
+      expectParse('8-March-1991', 'd!-MMMM-yyyy', new Date(1991, 2, 8, 0));
+      expectParse('February/5/1980', 'MMMM/d!/yyyy', new Date(1980, 1, 5, 0));
+      expectParse('1955/February/5', 'yyyy/MMMM/d!', new Date(1955, 1, 5, 0));
+      expectParse('11-08-13', 'd!-MM-yy', new Date(2013, 7, 11, 0));
+
+      expectParse('17.November.13', 'd!.MMMM.yy', new Date(2013, 10, 17, 0));
+      expectParse('08-March-1991', 'd!-MMMM-yyyy', new Date(1991, 2, 8, 0));
+      expectParse('February/05/1980', 'MMMM/d!/yyyy', new Date(1980, 1, 5, 0));
+      expectParse('1955/February/05', 'yyyy/MMMM/d!', new Date(1955, 1, 5, 0));
+      expectParse('11-08-13', 'd!-MM-yy', new Date(2013, 7, 11, 0));
+    });
+
     it('should work correctly for `EEEE`', function() {
       expectParse('Sunday.17.November.13', 'EEEE.d.MMMM.yy', new Date(2013, 10, 17, 0));
       expectParse('8-Friday-March-1991', 'd-EEEE-MMMM-yyyy', new Date(1991, 2, 8, 0));