From c44555648a5df0390d1010a65ecc173215577daa Mon Sep 17 00:00:00 2001
From: Matthias Schmidt <gravatronics@live.com>
Date: Tue, 9 Oct 2012 19:22:59 +0200
Subject: [PATCH] Adds missing class

---
 .../DateDiffModifierTemplatePlugin.class.php  | 41 +++++++++++++++++++
 1 file changed, 41 insertions(+)
 create mode 100644 wcfsetup/install/files/lib/system/template/plugin/DateDiffModifierTemplatePlugin.class.php

diff --git a/wcfsetup/install/files/lib/system/template/plugin/DateDiffModifierTemplatePlugin.class.php b/wcfsetup/install/files/lib/system/template/plugin/DateDiffModifierTemplatePlugin.class.php
new file mode 100644
index 0000000000..c3ac5dc9b5
--- /dev/null
+++ b/wcfsetup/install/files/lib/system/template/plugin/DateDiffModifierTemplatePlugin.class.php
@@ -0,0 +1,41 @@
+<?php
+namespace wcf\system\template\plugin;
+use wcf\system\template\TemplateEngine;
+use wcf\util\DateUtil;
+
+/**
+ * The 'dateDiff' modifier calculates the difference between two unix timestamps
+ * and returns it as a textual date interval. The second parameter $fullInterval
+ * indicates if the full difference is returned or just a rounded difference.
+ * 
+ * Usage:
+ * {$timestamp|dateDiff}
+ * {"123456789"|dateDiff:$timestamp:$fullInverval}
+ *
+ * @author 	Matthias Schmidt, Marcel Werk
+ * @copyright	2001-2012 WoltLab GmbH
+ * @license	GNU Lesser General Public License <http://opensource.org/licenses/lgpl-license.php>
+ * @package	com.woltlab.wcf
+ * @subpackage	system.template.plugin
+ * @category 	Community Framework
+ */
+class DateDiffModifierTemplatePlugin implements IModifierTemplatePlugin {
+	/**
+	 * @see wcf\system\template\IModifierTemplatePlugin::execute()
+	 */
+	public function execute($tagArgs, TemplateEngine $tplObj) {
+		if (!isset($tagArgs[1])) {
+			$tagArgs[1] = TIME_NOW;
+		}
+		
+		$fullInterval = false;
+		if (isset($tagArgs[2])) {
+			$fullInterval = $tagArgs[2];
+		}
+		
+		$startTime = DateUtil::getDateTimeByTimestamp(min($tagArgs[0], $tagArgs[1]));
+		$endTime = DateUtil::getDateTimeByTimestamp(max($tagArgs[0], $tagArgs[1]));
+		
+		return DateUtil::formatInterval($endTime->diff($startTime), $fullInterval);
+	}
+}
-- 
2.20.1