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system/vendor/swift/Swift/Cache/Memory.php

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+<?php
+
+/**
+ * Swift Mailer Native memory runtime cache
+ * Please read the LICENSE file
+ * @author Chris Corbyn <chris@w3style.co.uk>
+ * @package Swift_Cache
+ * @license GNU Lesser General Public License
+ */
+
+require_once dirname(__FILE__) . "/../ClassLoader.php";
+Swift_ClassLoader::load("Swift_Cache");
+
+/**
+ * Caches data in variables - uses memory!
+ * @package Swift_Cache
+ * @author Chris Corbyn <chris@w3style.co.uk>
+ */
+class Swift_Cache_Memory extends Swift_Cache
+{
+  /**
+   * The storage container for this cache
+   * @var array
+   */
+  protected $store = array();
+  /**
+   * The key which was last requested
+   * @var string
+   */
+  protected $requested;
+  
+  /**
+   * Write data to the cache
+   * @param string The cache key
+   * @param string The data to write
+   */
+  public function write($key, $data)
+  {
+    if (!isset($this->store[$key])) $this->store[$key] = $data;
+    else $this->store[$key] .= $data;
+  }
+  /**
+   * Clear the cached data (unset)
+   * @param string The cache key
+   */
+  public function clear($key)
+  {
+    $this->store[$key] = null;
+    unset($this->store[$key]);
+  }
+  /**
+   * Check if data is cached for $key
+   * @param string The cache key
+   * @return boolean
+   */
+  public function has($key)
+  {
+    return array_key_exists($key, $this->store);
+  }
+  /**
+   * Read data from the cache for $key
+   * It makes no difference to memory/speed if data is read in chunks so arguments are ignored
+   * @param string The cache key
+   * @return string
+   */
+  public function read($key, $size=null)
+  {
+    if (!$this->has($key)) return false;
+    
+    if ($this->requested == $key)
+    {
+      $this->requested = null;
+      return false;
+    }
+    $this->requested = $key;
+    return $this->store[$key];
+  }
+}