Make rcube_utils::strtotime() timezone aware (#1490163)

program/lib/Roundcube/rcube_utils.php

@@ -752,12 +752,14 @@ class rcube_utils
      * Improved equivalent to strtotime()
      *
      * @param string $date  Date string
+     * @param object DateTimeZone to use for DateTime object
      *
      * @return int Unix timestamp
      */
-    public static function strtotime($date)
+    public static function strtotime($date, $timezone = null)
     {
         $date = self::clean_datestr($date);
+        $tzname = $timezone ? ' ' . $timezone->getName() : '';
 
         // unix timestamp
         if (is_numeric($date)) {
@@ -766,7 +768,7 @@ class rcube_utils
 
         // if date parsing fails, we have a date in non-rfc format.
         // remove token from the end and try again
-        while ((($ts = @strtotime($date)) === false) || ($ts < 0)) {
+        while ((($ts = @strtotime($date . $tzname)) === false) || ($ts < 0)) {
             $d = explode(' ', $date);
             array_pop($d);
             if (!$d) {
@@ -782,6 +784,7 @@ class rcube_utils
      * Date parsing function that turns the given value into a DateTime object
      *
      * @param string $date  Date string
+     * @param object DateTimeZone to use for DateTime object
      *
      * @return object DateTime instance or false on failure
      */
@@ -805,9 +808,12 @@ class rcube_utils
         }
 
         // try our advanced strtotime() method
-        if (!$dt && ($timestamp = self::strtotime($date))) {
+        if (!$dt && ($timestamp = self::strtotime($date, $timezone))) {
             try {
                 $dt = new DateTime("@".$timestamp);
+                if ($timezone) {
+                    $dt->setTimezone($timezone);
+                }
             }
             catch (Exception $e) {
                 // ignore

tests/Framework/Utils.php

@@ -278,6 +278,7 @@ class Framework_Utils extends PHPUnit_Framework_TestCase
         $test = array(
             '1' => 1,
             '' => 0,
+            'abc-555' => 0,
             '2013-04-22' => 1366581600,
             '2013/04/22' => 1366581600,
             '2013.04.22' => 1366581600,
@@ -286,6 +287,8 @@ class Framework_Utils extends PHPUnit_Framework_TestCase
             '22.04.2013' => 1366581600,
             '22.4.2013'  => 1366581600,
             '20130422'   => 1366581600,
+            '2013/06/21 12:00:00 UTC' => 1371816000,
+            '2013/06/21 12:00:00 Europe/Berlin' => 1371808800,
         );
 
         foreach ($test as $datetime => $ts) {
@@ -316,7 +319,27 @@ class Framework_Utils extends PHPUnit_Framework_TestCase
 
         foreach ($test as $datetime => $ts) {
             $result = rcube_utils::anytodatetime($datetime);
-            $this->assertSame($ts, $result ? $result->format('Y-m-d') : '', "Error parsing date: $datetime");
+            $this->assertSame($ts, $result ? $result->format('Y-m-d') : false, "Error parsing date: $datetime");
+        }
+    }
+
+    /**
+     * rcube:utils::anytodatetime()
+     */
+    function test_anytodatetime_timezone()
+    {
+        $tz = new DateTimeZone('Europe/Helsinki');
+        $test = array(
+            'Jan 1st 2014 +0800' => '2013-12-31 18:00',  // result in target timezone
+            'Jan 1st 14 45:42'   => '2014-01-01 00:00',  // force fallback to rcube_utils::strtotime()
+            'Jan 1st 2014 UK'    => '2014-01-01 00:00',
+            'Invalid date'       => false,
+        );
+
+        foreach ($test as $datetime => $ts) {
+            $result = rcube_utils::anytodatetime($datetime, $tz);
+            if ($result) $result->setTimezone($tz);  // move to target timezone for comparison
+            $this->assertSame($ts, $result ? $result->format('Y-m-d H:i') : false, "Error parsing date: $datetime");
         }
     }