--- a/wp/wp-includes/class-feed.php	Tue Jun 09 11:14:17 2015 +0000
+++ b/wp/wp-includes/class-feed.php	Mon Oct 14 17:39:30 2019 +0200
@@ -1,141 +1,18 @@
 <?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
-	 */
-	public function create($location, $filename, $extension) {
-		return new WP_Feed_Cache_Transient($location, $filename, $extension);
-	}
-}
-
-class WP_Feed_Cache_Transient {
-	public $name;
-	public $mod_name;
-	public $lifetime = 43200; //Default lifetime in cache of 12 hours
-
-	public function __construct($location, $filename, $extension) {
-		$this->name = 'feed_' . $filename;
-		$this->mod_name = 'feed_mod_' . $filename;
+/**
+ * Feed API
+ *
+ * @package WordPress
+ * @subpackage Feed
+ */
 
-		$lifetime = $this->lifetime;
-		/**
-		 * Filter the transient lifetime of the feed cache.
-		 *
-		 * @since 2.8.0
-		 *
-		 * @param int    $lifetime Cache duration in seconds. Default is 43200 seconds (12 hours).
-		 * @param string $filename Unique identifier for the cache object.
-		 */
-		$this->lifetime = apply_filters( 'wp_feed_cache_transient_lifetime', $lifetime, $filename);
-	}
-
-	public function save($data) {
-		if ( $data instanceof SimplePie ) {
-			$data = $data->data;
-		}
+_deprecated_file( basename( __FILE__ ), '4.7.0', 'fetch_feed()' );
 
-		set_transient($this->name, $data, $this->lifetime);
-		set_transient($this->mod_name, time(), $this->lifetime);
-		return true;
-	}
-
-	public function load() {
-		return get_transient($this->name);
-	}
-
-	public function mtime() {
-		return get_transient($this->mod_name);
-	}
-
-	public function touch() {
-		return set_transient($this->mod_name, time(), $this->lifetime);
-	}
-
-	public function unlink() {
-		delete_transient($this->name);
-		delete_transient($this->mod_name);
-		return true;
-	}
+if ( ! class_exists( 'SimplePie', false ) ) {
+	require_once( ABSPATH . WPINC . '/class-simplepie.php' );
 }
 
-class WP_SimplePie_File extends SimplePie_File {
-
-	public 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;
-
-			$res = wp_safe_remote_request($url, $args);
-
-			if ( is_wp_error($res) ) {
-				$this->error = 'WP HTTP Error: ' . $res->get_error_message();
-				$this->success = false;
-			} else {
-				$this->headers = wp_remote_retrieve_headers( $res );
-				$this->body = wp_remote_retrieve_body( $res );
-				$this->status_code = wp_remote_retrieve_response_code( $res );
-			}
-		} else {
-			$this->error = '';
-			$this->success = false;
-		}
-	}
-}
-
-/**
- * WordPress SimplePie Sanitization Class
- *
- * Extension of the SimplePie_Sanitize class to use KSES, because
- * we cannot universally count on DOMDocument being available
- *
- * @package WordPress
- * @since 3.5.0
- */
-class WP_SimplePie_Sanitize_KSES extends SimplePie_Sanitize {
-	public function sanitize( $data, $type, $base = '' ) {
-		$data = trim( $data );
-		if ( $type & SIMPLEPIE_CONSTRUCT_MAYBE_HTML ) {
-			if (preg_match('/(&(#(x[0-9a-fA-F]+|[0-9]+)|[a-zA-Z0-9]+)|<\/[A-Za-z][^\x09\x0A\x0B\x0C\x0D\x20\x2F\x3E]*' . SIMPLEPIE_PCRE_HTML_ATTRIBUTE . '>)/', $data)) {
-				$type |= SIMPLEPIE_CONSTRUCT_HTML;
-			}
-			else {
-				$type |= SIMPLEPIE_CONSTRUCT_TEXT;
-			}
-		}
-		if ( $type & SIMPLEPIE_CONSTRUCT_BASE64 ) {
-			$data = base64_decode( $data );
-		}
-		if ( $type & ( SIMPLEPIE_CONSTRUCT_HTML | SIMPLEPIE_CONSTRUCT_XHTML ) ) {
-			$data = wp_kses_post( $data );
-			if ( $this->output_encoding !== 'UTF-8' ) {
-				$data = $this->registry->call( 'Misc', 'change_encoding', array( $data, 'UTF-8', $this->output_encoding ) );
-			}
-			return $data;
-		} else {
-			return parent::sanitize( $data, $type, $base );
-		}
-	}
-}
+require_once( ABSPATH . WPINC . '/class-wp-feed-cache.php' );
+require_once( ABSPATH . WPINC . '/class-wp-feed-cache-transient.php' );
+require_once( ABSPATH . WPINC . '/class-wp-simplepie-file.php' );
+require_once( ABSPATH . WPINC . '/class-wp-simplepie-sanitize-kses.php' );
\ No newline at end of file