relax some date parser patterns

Author: xabbuh

DateFormatter/DateFormat/DayTransformer.php

@@ -33,7 +33,7 @@ public function format(\DateTime $dateTime, $length)
      */
     public function getReverseMatchingRegExp($length)
     {
-        return 1 === $length ? '\d{1,2}' : '\d{'.$length.'}';
+        return 1 === $length ? '\d{1,2}' : '\d{1,'.$length.'}';
     }
 
     /**

DateFormatter/DateFormat/MonthTransformer.php

@@ -104,7 +104,7 @@ public function getReverseMatchingRegExp($length)
                 $regExp = '[JFMASOND]';
                 break;
             default:
-                $regExp = '\d{'.$length.'}';
+                $regExp = '\d{1,'.$length.'}';
                 break;
         }
 

DateFormatter/DateFormat/YearTransformer.php

@@ -37,7 +37,7 @@ public function format(\DateTime $dateTime, $length)
      */
     public function getReverseMatchingRegExp($length)
     {
-        return 2 === $length ? '\d{2}' : '\d{4}';
+        return 2 === $length ? '\d{2}' : '\d{1,4}';
     }
 
     /**

Tests/DateFormatter/AbstractIntlDateFormatterTest.php

@@ -618,6 +618,7 @@ public function parseMonthProvider()
     {
         return [
             ['y-M-d', '1970-1-1', 0],
+            ['y-MM-d', '1970-1-1', 0],
             ['y-MMM-d', '1970-Jan-1', 0],
             ['y-MMMM-d', '1970-January-1', 0],
         ];
@@ -636,6 +637,7 @@ public function parseDayProvider()
     {
         return [
             ['y-M-d', '1970-1-1', 0],
+            ['y-M-dd', '1970-1-1', 0],
             ['y-M-dd', '1970-1-01', 0],
             ['y-M-ddd', '1970-1-001', 0],
         ];

Tests/DateFormatter/IntlDateFormatterTest.php

@@ -183,6 +183,17 @@ public function parseQuarterProvider()
         return $this->notImplemented(parent::parseQuarterProvider());
     }
 
+    public function testParseThreeDigitsYears()
+    {
+        if (PHP_INT_SIZE < 8) {
+            $this->markTestSkipped('Parsing three digits years requires a 64bit PHP.');
+        }
+
+        $formatter = $this->getDefaultDateFormatter('yyyy-M-d');
+        $this->assertSame(-32157648000, $formatter->parse('950-12-19'));
+        $this->assertIsIntlSuccess($formatter, 'U_ZERO_ERROR', IntlGlobals::U_ZERO_ERROR);
+    }
+
     protected function getDateFormatter($locale, $datetype, $timetype, $timezone = null, $calendar = IntlDateFormatter::GREGORIAN, $pattern = null)
     {
         return new IntlDateFormatter($locale, $datetype, $timetype, $timezone, $calendar, $pattern);