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extend/app_alipay/lotusphp_runtime/StoreFile.php

@@ -0,0 +1,125 @@
+<?php
+class LtStoreFile implements LtStore
+{
+	public $storeDir;
+	public $prefix = 'LtStore';
+	public $useSerialize = false;
+	static public $defaultStoreDir = "/tmp/LtStoreFile/";
+	public function init()
+	{
+		/**
+		 * 目录不存在和是否可写在调用add是测试
+		 * @todo detect dir is exists and writable
+		 */
+		if (null == $this->storeDir)
+		{
+			$this->storeDir = self::$defaultStoreDir;
+		}
+		$this->storeDir = str_replace('\\', '/', $this->storeDir);
+		$this->storeDir = rtrim($this->storeDir, '\\/') . '/';
+	}
+
+	/**
+	 * 当key存在时:
+	 * 如果没有过期, 不更新值, 返回 false
+	 * 如果已经过期,   更新值, 返回 true
+	 *
+	 * @return bool
+	 */
+	public function add($key, $value)
+	{
+		$file = $this->getFilePath($key);
+		$cachePath = pathinfo($file, PATHINFO_DIRNAME);
+		if (!is_dir($cachePath))
+		{
+			if (!@mkdir($cachePath, 0777, true))
+			{
+				trigger_error("Can not create $cachePath");
+			}
+		}
+		if (is_file($file))
+		{
+			return false;
+		}
+		if ($this->useSerialize)
+		{
+			$value = serialize($value);
+		}
+		$length = file_put_contents($file, '<?php exit;?>' . $value);
+		return $length > 0 ? true : false;
+	}
+
+	/**
+	 * 删除不存在的key返回false
+	 *
+	 * @return bool
+	 */
+	public function del($key)
+	{
+		$file = $this->getFilePath($key);
+		if (!is_file($file))
+		{
+			return false;
+		}
+		else
+		{
+			return @unlink($file);
+		}
+	}
+
+	/**
+	 * 取不存在的key返回false
+	 * 已经过期返回false
+	 *
+	 * @return 成功返回数据,失败返回false
+	 */
+	public function get($key)
+	{
+		$file = $this->getFilePath($key);
+		if (!is_file($file))
+		{
+			return false;
+		}
+		$str = file_get_contents($file);
+		$value = substr($str, 13);
+		if ($this->useSerialize)
+		{
+			$value = unserialize($value);
+		}
+		return $value;
+	}
+
+	/**
+	 * key不存在 返回false
+	 * 不管有没有过期,都更新数据
+	 *
+	 * @return bool
+	 */
+	public function update($key, $value)
+	{
+		$file = $this->getFilePath($key);
+		if (!is_file($file))
+		{
+			return false;
+		}
+		else
+		{
+			if ($this->useSerialize)
+			{
+				$value = serialize($value);
+			}
+			$length = file_put_contents($file, '<?php exit;?>' . $value);
+			return $length > 0 ? true : false;
+		}
+	}
+
+	public function getFilePath($key)
+	{
+		$token = md5($key);
+		return $this->storeDir .
+		$this->prefix . '/' .
+		substr($token, 0, 2) .'/' .
+		substr($token, 2, 2) . '/' .
+		$token . '.php';
+	}
+}