WordPress/wp-includes/class-feed.php

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<?php
if ( !class_exists('SimplePie') )
require_once (ABSPATH . WPINC . '/class-simplepie.php');
class WP_Feed_Cache extends SimplePie_Cache {
/**
* 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 $name;
var $mod_name;
var $lifetime = 43200; //Default lifetime in cache of 12 hours
function __construct($location, $filename, $extension) {
$this->name = 'feed_' . $filename;
$this->mod_name = 'feed_mod_' . $filename;
$this->lifetime = apply_filters('wp_feed_cache_transient_lifetime', $this->lifetime, $filename);
}
function save($data) {
if ( is_a($data, 'SimplePie') )
$data = $data->data;
set_transient($this->name, $data, $this->lifetime);
set_transient($this->mod_name, time(), $this->lifetime);
return true;
}
function load() {
return get_transient($this->name);
}
function mtime() {
return get_transient($this->mod_name);
}
function touch() {
return set_transient($this->mod_name, time(), $this->lifetime);
}
function unlink() {
delete_transient($this->name);
delete_transient($this->mod_name);
return true;
}
}
class WP_SimplePie_File extends SimplePie_File {
function __construct($url, $timeout = 10, $redirects = 5, $headers = null, $useragent = null, $force_fsockopen = false) {
$this->url = $url;
$this->timeout = $timeout;
$this->redirects = $redirects;
$this->headers = $headers;
$this->useragent = $useragent;
$this->method = SIMPLEPIE_FILE_SOURCE_REMOTE;
if ( preg_match('/^http(s)?:\/\//i', $url) ) {
$args = array( 'timeout' => $this->timeout, 'redirection' => $this->redirects);
if ( !empty($this->headers) )
$args['headers'] = $this->headers;
if ( SIMPLEPIE_USERAGENT != $this->useragent ) //Use default WP user agent unless custom has been specified
$args['user-agent'] = $this->useragent;
$res = wp_remote_request($url, $args);
if ( is_wp_error($res) ) {
$this->error = 'WP HTTP Error: ' . $res->get_error_message();
$this->success = false;
} else {
$this->headers = $res['headers'];
$this->body = $res['body'];
$this->status_code = $res['response']['code'];
}
} else {
if ( ! $this->body = file_get_contents($url) ) {
$this->error = 'file_get_contents could not read the file';
$this->success = false;
}
}
}
}