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Stabilize how WordPress hooks into SimplePie to implement transient caching. 

Since a plugin can load a previous (< 1.3) version of SimplePie before we do,
we need to be compatible with our old method of overriding SimplePie_Cache::create().

SimplePie_Cache::create() was converted to static in 1.3 (as it was called),
requiring that we create two different definitions of WP_Feed_Cache (extends
SimplePie_Cache). Instead, we can use 1.3's new object registry, and leave
the old WP_Feed_Cache to SimplePie 1.2 versions.

see #21183.



git-svn-id: https://develop.svn.wordpress.org/trunk@21652 602fd350-edb4-49c9-b593-d223f7449a82
This commit is contained in:
Andrew Nacin 2012-08-29 00:25:52 +00:00
parent 01527025c9
commit 3064c6d713
2 changed files with 24 additions and 12 deletions
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24
wp-includes/class-feed.php
View File

@ -3,17 +3,21 @@
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 static function create($location, $filename, $extension) {
return new WP_Feed_Cache_Transient($location, $filename, $extension);
if ( version_compare( SIMPLEPIE_VERSION, '1.3-dev', '>' ) ) :
SimplePie_Cache::register( 'wp-transient', 'WP_Feed_Cache_Transient' );
else :
class WP_Feed_Cache extends SimplePie_Cache {
/**
* Create a new SimplePie_Cache object
*
* @static
* @access public
*/
function create($location, $filename, $extension) {
return new WP_Feed_Cache_Transient($location, $filename, $extension);
}
}
}
endif;
class WP_Feed_Cache_Transient {
var $name;

12
wp-includes/feed.php
View File

@ -532,9 +532,17 @@ function fetch_feed($url) {
require_once (ABSPATH . WPINC . '/class-feed.php');
$feed = new SimplePie();
if ( version_compare( SIMPLEPIE_VERSION, '1.3-dev', '>' ) ) {
$feed->set_cache_location( 'wp-transient' );
$feed->registry->register( 'Cache', 'WP_Feed_Cache_Transient' );
$feed->registry->register( 'File', 'WP_SimplePie_File' );
} else {
$feed->set_cache_class( 'WP_Feed_Cache' );
$feed->set_file_class( 'WP_SimplePie_File' );
}
$feed->set_feed_url($url);
$feed->set_cache_class('WP_Feed_Cache');
$feed->set_file_class('WP_SimplePie_File');
$feed->set_cache_duration(apply_filters('wp_feed_cache_transient_lifetime', 43200, $url));
do_action_ref_array( 'wp_feed_options', array( &$feed, $url ) );
$feed->init();