Added new (clean) yii boilerplate

framework/caching/dependencies/CFileCacheDependency.php

@@ -0,0 +1,53 @@
+<?php
+/**
+ * CFileCacheDependency class file.
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @link http://www.yiiframework.com/
+ * @copyright 2008-2013 Yii Software LLC
+ * @license http://www.yiiframework.com/license/
+ */
+
+/**
+ * CFileCacheDependency represents a dependency based on a file's last modification time.
+ *
+ * CFileCacheDependency performs dependency checking based on the
+ * last modification time of the file specified via {@link fileName}.
+ * The dependency is reported as unchanged if and only if the file's
+ * last modification time remains unchanged.
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @package system.caching.dependencies
+ * @since 1.0
+ */
+class CFileCacheDependency extends CCacheDependency
+{
+	/**
+	 * @var string the name of the file whose last modification time is used to
+	 * check if the dependency has been changed.
+	 */
+	public $fileName;
+
+	/**
+	 * Constructor.
+	 * @param string $fileName name of the file whose change is to be checked.
+	 */
+	public function __construct($fileName=null)
+	{
+		$this->fileName=$fileName;
+	}
+
+	/**
+	 * Generates the data needed to determine if dependency has been changed.
+	 * This method returns the file's last modification time.
+	 * @throws CException if {@link fileName} is empty
+	 * @return mixed the data needed to determine if dependency has been changed.
+	 */
+	protected function generateDependentData()
+	{
+		if($this->fileName!==null)
+			return @filemtime($this->fileName);
+		else
+			throw new CException(Yii::t('yii','CFileCacheDependency.fileName cannot be empty.'));
+	}
+}