1 files changed, 104 insertions, 0 deletions
diff --git a/www/wiki/extensions/SemanticMediaWiki/src/MediaWiki/LocalTime.php b/www/wiki/extensions/SemanticMediaWiki/src/MediaWiki/LocalTime.php
new file mode 100644
index 00000000..86070a80
--- /dev/null
+++ b/www/wiki/extensions/SemanticMediaWiki/src/MediaWiki/LocalTime.php
@@ -0,0 +1,104 @@
+<?php
+
+namespace SMW\MediaWiki;
+
+use DateInterval;
+use DateTime;
+use DateTimeZone;
+use User;
+
+/**
+ * @license GNU GPL v2+
+ * @since 3.0
+ *
+ * @author mwjames
+ */
+class LocalTime {
+
+	/**
+	 * @see $GLOBALS['wgLocalTZoffset']
+	 * @var integer
+	 */
+	private static $localTimeOffset = 0;
+
+	/**
+	 * @since 3.0
+	 *
+	 * @param integer $localTimeOffset
+	 */
+	public static function setLocalTimeOffset( $localTimeOffset ) {
+		self::$localTimeOffset = $localTimeOffset;
+	}
+
+	/**
+	 * @see Language::userAdjust
+	 *
+	 * Language::userAdjust cannot be used as entirely relies on the timestamp
+	 * premises making < 1970 return invalid results hence we copy the relevant
+	 * part on work with the DateInterval instead.
+	 *
+	 * @since 3.0
+	 *
+	 * @param DateTime $dateTime
+	 * @param User|null $user
+	 *
+	 * @return DateTime
+	 */
+	public static function getLocalizedTime( DateTime $dateTime, User $user = null ) {
+
+		$tz = $user instanceof User ? $user->getOption( 'timecorrection' ) : false;
+		$data = explode( '|', $tz, 3 );
+
+		// DateTime is mutable, keep track of possible changes
+		$dateTime->hasLocalTimeCorrection = false;
+
+		if ( $data[0] == 'ZoneInfo' ) {
+			try {
+				$userTZ = new DateTimeZone( $data[2] );
+				$dateTime->setTimezone( $userTZ );
+				$dateTime->hasLocalTimeCorrection = true;
+				return $dateTime;
+			} catch ( \Exception $e ) {
+				// Unrecognized timezone, default to 'Offset' with the stored offset.
+				$data[0] = 'Offset';
+			}
+		}
+
+		if ( $data[0] == 'System' || $tz == '' ) {
+			# Global offset in minutes.
+			$minDiff = self::$localTimeOffset;
+		} elseif ( $data[0] == 'Offset' ) {
+			$minDiff = intval( $data[1] );
+		} else {
+			$data = explode( ':', $tz );
+			if ( count( $data ) == 2 ) {
+				$data[0] = intval( $data[0] );
+				$data[1] = intval( $data[1] );
+				$minDiff = abs( $data[0] ) * 60 + $data[1];
+				if ( $data[0] < 0 ) {
+					$minDiff = -$minDiff;
+				}
+			} else {
+				$minDiff = intval( $data[0] ) * 60;
+			}
+		}
+
+		# No difference ?
+		if ( 0 == $minDiff ) {
+			return $dateTime;
+		}
+
+		$dateInterval = new DateInterval( "PT" . abs( $minDiff ) . "M" );
+
+		if ( $minDiff > 0 ) {
+			$dateTime->add( $dateInterval );
+		} else {
+			$dateTime->sub( $dateInterval );
+		}
+
+		$dateTime->hasLocalTimeCorrection = true;
+
+		return $dateTime;
+	}
+
+}