Wait with getting the timezone from the server until we need it

src/TimeZoneProvider.php

@@ -0,0 +1,35 @@
+<?php
+/**
+ * Copyright (c) 2015 Robin Appelman <icewind@owncloud.com>
+ * This file is licensed under the Licensed under the MIT license:
+ * http://opensource.org/licenses/MIT
+ */
+
+namespace Icewind\SMB;
+
+class TimeZoneProvider {
+	/**
+	 * @var string
+	 */
+	private $host;
+
+	/**
+	 * @var string
+	 */
+	private $timeZone;
+
+	/**
+	 * @param string $host
+	 */
+	function __construct($host) {
+		$this->host = $host;
+	}
+
+	public function get() {
+		if (!$this->timeZone) {
+			$command = 'net time zone -S ' . escapeshellarg($this->host);
+			$this->timeZone = exec($command);
+		}
+		return $this->timeZone;
+	}
+}