Use SimplePie for widget and dashboard feeds. First cut. see #9198

git-svn-id: https://develop.svn.wordpress.org/trunk@10666 602fd350-edb4-49c9-b593-d223f7449a82

wp-includes/class-feed.php

@@ -0,0 +1,79 @@
+<?php
+
+require_once (ABSPATH . WPINC . '/simplepie.inc');
+
+class WP_Feed_Cache extends SimplePie_Cache
+{
+	/**
+	 * Don't call the constructor. Please.
+	 *
+	 * @access private
+	 */
+	function WP_Feed_Cache()
+	{
+		trigger_error('Please call SimplePie_Cache::create() instead of the constructor', E_USER_ERROR);
+	}
+
+	/**
+	 * Create a new SimplePie_Cache object
+	 *
+	 * @static
+	 * @access public
+	 */
+	function create($location, $filename, $extension)
+	{
+		return new WP_Feed_Cache_Transient($location, $filename, $extension);
+	}
+}
+
+class WP_Feed_Cache_Transient
+{
+	var $location;
+	var $filename;
+	var $extension;
+	var $name;
+
+	function WP_Feed_Cache_Transient($location, $filename, $extension)
+	{
+		//$this->location = $location;
+		//$this->filename = rawurlencode($filename);
+		//$this->extension = rawurlencode($extension);
+		//$this->name = "$location/$this->filename.$this->extension";
+		$this->name = 'feed_' . $filename;
+		$this->mod_name = 'feed_mod_' . $filename;
+	}
+
+	function save($data)
+	{
+		if (is_a($data, 'SimplePie'))
+		{
+			$data = $data->data;
+		}
+
+		set_transient($this->name, $data, 43200);
+		set_transient($this->mod_name, time(), 43200);
+		return true;
+	}
+
+	function load()
+	{
+		return get_transient($this->name);
+	}
+
+	function mtime()
+	{
+		return get_transient($this->mod_name);
+	}
+
+	function touch()
+	{
+		return set_transient($this->mod_name, time(), 43200);
+	}
+
+	function unlink()
+	{
+		delete_transient($this->name);
+		delete_transient($this->mod_name);
+		return true;
+	}
+}