bugfix: iso8601 timestamp parsing

aws · Aug 1, 2024 · d821673 · d821673
1 parent eeb8df6
commit d821673
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diff --git a/.changes/nextrelease/iso-8601-fix.json b/.changes/nextrelease/iso-8601-fix.json
@@ -0,0 +1,7 @@
+[
+  {
+    "type": "bugfix",
+    "category": "Api",
+    "description": "Fixes issue with parsing iso8601 timestamps with nanosecond precision in versions 8.0.9 and below."
+  }
+]
diff --git a/src/Api/DateTimeResult.php b/src/Api/DateTimeResult.php
@@ -13,6 +13,8 @@
  */
 class DateTimeResult extends \DateTime implements \JsonSerializable
 {
+    private const ISO8601_NANOSECOND_REGEX = '/^(.*\.\d{6})(\d{1,3})(Z|[+-]\d{2}:\d{2})?$/';
+
     /**
      * Create a new DateTimeResult from a unix timestamp.
      * The Unix epoch (or Unix time or POSIX time or Unix
@@ -60,6 +62,14 @@ public static function fromISO8601($iso8601Timestamp)
             throw new ParserException('Invalid timestamp value passed to DateTimeResult::fromISO8601');
         }
 
+        // Prior to 8.0.10, nanosecond precision is not supported
+        // Reduces to microsecond precision if nanosecond precision is detected
+        if (PHP_VERSION_ID < 80010
+            && preg_match(self::ISO8601_NANOSECOND_REGEX, $iso8601Timestamp, $matches)
+        ) {
+            $iso8601Timestamp = $matches[1] . ($matches[3] ?? '');
+        }
+
         return new DateTimeResult($iso8601Timestamp);
     }
 

diff --git a/tests/Api/DateTimeResultTest.php b/tests/Api/DateTimeResultTest.php
@@ -49,4 +49,33 @@ public function testJsonSerialzesAsIso8601()
         $d = DateTimeResult::fromEpoch($t);
         $this->assertSame('"' . gmdate('c', $t). '"', json_encode($d));
     }
+
+    /**
+     * @return void
+     *
+     * @dataProvider nanosecondPrecisionProvider
+     */
+    public function testIso8601NanosecondPrecision($timestamp, $expected)
+    {
+        $parsed = DateTimeResult::fromISO8601($timestamp);
+        $this->assertEquals($expected, (string) $parsed);
+    }
+
+    public function nanosecondPrecisionProvider()
+    {
+        return [
+            ['2024-07-31T19:05:47.1234567Z', '2024-07-31T19:05:47+00:00'],
+            ['2024-07-31T19:05:47.12345678Z', '2024-07-31T19:05:47+00:00'],
+            ['2024-07-31T19:05:47.123456789Z', '2024-07-31T19:05:47+00:00'],
+            ['2024-07-31T19:05:47.1234567+02:00', '2024-07-31T19:05:47+02:00'],
+            ['2024-07-31T19:05:47.12345678+02:00', '2024-07-31T19:05:47+02:00'],
+            ['2024-07-31T19:05:47.123456789+02:00', '2024-07-31T19:05:47+02:00'],
+            ['2024-07-31T19:05:47.1234567-05:00', '2024-07-31T19:05:47-05:00'],
+            ['2024-07-31T19:05:47.12345678-05:00', '2024-07-31T19:05:47-05:00'],
+            ['2024-07-31T19:05:47.123456789-05:00', '2024-07-31T19:05:47-05:00'],
+            ['2024-07-31T19:05:47.1234567', '2024-07-31T19:05:47+00:00'],
+            ['2024-07-31T19:05:47.12345678', '2024-07-31T19:05:47+00:00'],
+            ['2024-07-31T19:05:47.123456789', '2024-07-31T19:05:47+00:00']
+        ];
+    }
 }
diff --git a/tests/Api/Parser/JsonParserTest.php b/tests/Api/Parser/JsonParserTest.php
@@ -44,6 +44,18 @@ public function timeStampModelProvider()
             [(float) 0, "ParseIso8601", "1970-01-01T00:00:00+00:00"],
             [(float) 0, "ParseUnix", "1970-01-01T00:00:00+00:00"],
             [(float) 0, "ParseUnknown", '1970-01-01T00:00:00+00:00'],
+            ['2024-07-31T19:05:47.1234567Z', 'ParseIso8601', '2024-07-31T19:05:47+00:00'],
+            ['2024-07-31T19:05:47.12345678Z', 'ParseIso8601', '2024-07-31T19:05:47+00:00'],
+            ['2024-07-31T19:05:47.123456789Z', 'ParseIso8601', '2024-07-31T19:05:47+00:00'],
+            ['2024-07-31T19:05:47.1234567+02:00', 'ParseIso8601', '2024-07-31T19:05:47+02:00'],
+            ['2024-07-31T19:05:47.12345678+02:00', 'ParseIso8601', '2024-07-31T19:05:47+02:00'],
+            ['2024-07-31T19:05:47.123456789+02:00', 'ParseIso8601', '2024-07-31T19:05:47+02:00'],
+            ['2024-07-31T19:05:47.1234567-05:00', 'ParseIso8601', '2024-07-31T19:05:47-05:00'],
+            ['2024-07-31T19:05:47.12345678-05:00', 'ParseIso8601', '2024-07-31T19:05:47-05:00'],
+            ['2024-07-31T19:05:47.123456789-05:00', 'ParseIso8601', '2024-07-31T19:05:47-05:00'],
+            ['2024-07-31T19:05:47.1234567', 'ParseIso8601', '2024-07-31T19:05:47+00:00'],
+            ['2024-07-31T19:05:47.12345678', 'ParseIso8601', '2024-07-31T19:05:47+00:00'],
+            ['2024-07-31T19:05:47.123456789', 'ParseIso8601', '2024-07-31T19:05:47+00:00']
         ];
     }
 

diff --git a/tests/Api/Parser/XmlParserTest.php b/tests/Api/Parser/XmlParserTest.php
@@ -47,6 +47,18 @@ public function timeStampModelProvider()
             [(float) 0, "ParseIso8601", "1970-01-01T00:00:00+00:00"],
             [(float) 0, "ParseUnix", "1970-01-01T00:00:00+00:00"],
             [(float) 0, "ParseUnknown", '1970-01-01T00:00:00+00:00'],
+            ['2024-07-31T19:05:47.1234567Z', 'ParseIso8601', '2024-07-31T19:05:47+00:00'],
+            ['2024-07-31T19:05:47.12345678Z', 'ParseIso8601', '2024-07-31T19:05:47+00:00'],
+            ['2024-07-31T19:05:47.123456789Z', 'ParseIso8601', '2024-07-31T19:05:47+00:00'],
+            ['2024-07-31T19:05:47.1234567+02:00', 'ParseIso8601', '2024-07-31T19:05:47+02:00'],
+            ['2024-07-31T19:05:47.12345678+02:00', 'ParseIso8601', '2024-07-31T19:05:47+02:00'],
+            ['2024-07-31T19:05:47.123456789+02:00', 'ParseIso8601', '2024-07-31T19:05:47+02:00'],
+            ['2024-07-31T19:05:47.1234567-05:00', 'ParseIso8601', '2024-07-31T19:05:47-05:00'],
+            ['2024-07-31T19:05:47.12345678-05:00', 'ParseIso8601', '2024-07-31T19:05:47-05:00'],
+            ['2024-07-31T19:05:47.123456789-05:00', 'ParseIso8601', '2024-07-31T19:05:47-05:00'],
+            ['2024-07-31T19:05:47.1234567', 'ParseIso8601', '2024-07-31T19:05:47+00:00'],
+            ['2024-07-31T19:05:47.12345678', 'ParseIso8601', '2024-07-31T19:05:47+00:00'],
+            ['2024-07-31T19:05:47.123456789', 'ParseIso8601', '2024-07-31T19:05:47+00:00']
         ];
     }