Ticket #8994: 8994.3.diff

src/wp-includes/feed-rss2.php

@@ -27 +27 @@
         xmlns:atom="http://www.w3.org/2005/Atom"
         xmlns:sy="http://purl.org/rss/1.0/modules/syndication/"
         xmlns:slash="http://purl.org/rss/1.0/modules/slash/"
+        xmlns:media="http://search.yahoo.com/mrss/"
         <?php
         /**
          * Fires at the end of the RSS root to add namespaces.
@@ -117 +118 @@
          * @since 2.0.0
          */
         do_action( 'rss2_item' );
+        $media_rss = apply_filters('media_rss', $media_rss = array());
+        media_print_rss( $media_rss );
         ?>
         </item>
         <?php endwhile; ?>

src/wp-includes/feed.php

@@ -708 +708 @@
 
         return $feed;
 }
+
+/**
+ * Search for post content for for img tags, and add them to media_rss array
+ *
+ * @since 4.8.0
+ * @param array $media_rss An array of media tags.
+ */
+function wp_media_rss( $media_rss ) {
+
+        global $mrss_gallery_lookup, $post;
+
+        // Honor the feed settings. Don't include any media that isn't in the feed.
+        if ( get_option( 'rss_use_excerpt' ) || !strlen( get_the_content() ) ) {
+                $content = the_excerpt_rss();
+        } else {
+                // If any galleries are processed, we need to capture the attachment IDs.
+                add_filter( 'wp_get_attachment_link', 'media_rss_gallery_lookup', 10, 5 );
+                $content = apply_filters( 'the_content', get_the_content() );
+                remove_filter( 'wp_get_attachment_link', 'media_rss_gallery_lookup', 10, 5 );
+                $lookup = $mrss_gallery_lookup;
+                unset( $mrss_gallery_lookup );
+        }
+
+        if( ! has_post_thumbnail( $post->ID ) )
+                return $media_rss;
+
+        $image_id = get_post_thumbnail_id( $post->ID );
+        $image_data = wp_get_attachment_metadata( $image_id );
+
+        $item['content']['attr']['url'] = wp_get_attachment_url( $image_id );
+        $item['content']['attr']['medium'] = 'image';
+        if ( !empty( $image_data['image_meta']['title'] ) ) {
+                $item['content']['children']['title']['attr']['type'] = 'plain';
+                $item['content']['children']['title']['children'][] = $image_data['image_meta']['title'];
+        } elseif ( !empty( $image_data['image_meta']['caption'] ) ) {
+                $item['content']['children']['title']['attr']['type'] = 'plain';
+                $item['content']['children']['title']['children'][] = $image_data['image_meta']['caption'];
+                $item['content']['children']['description']['children'][] = $image_data['image_meta']['caption'];
+        }
+        if ( !empty( $image_data['sizes']['thumbnail ']) )
+                $item['content']['children']['thumbnail']['attr']['url'] = wp_get_attachment_thumb_url( $image_id );
+
+        $media_rss[] = $item;
+
+        return $media_rss;
+}
+add_filter( 'media_rss', 'wp_media_rss' );
+
+function media_rss_url( $url ) {
+
+        if ( preg_match( '!^https?://!', $url ) )
+                return $url;
+        if ( $url{0} == '/' )
+                return rtrim( get_bloginfo('home'), '/' ) . $url;
+
+        return get_bloginfo('home') . $url;
+}
+
+function media_rss_gallery_lookup( $link, $id, $size, $permalink, $icon ) {
+        global $media_rss_gallery_lookup;
+
+        preg_match( '/ src="(.*?)"/', $link, $matches );
+        $media_rss_gallery_lookup[$matches[1]] = $id;
+
+        return $link;
+}
+
+/**
+ * print media_rss array to generate mrss entries such as <media:content>
+ *
+ * @package WordPress
+ * @subpackage Feed
+ * @since 2.8.0
+ */
+function media_print_rss( $media_rss ) {
+
+        foreach( (array)$media_rss as $elements )
+                media_print_element( $elements );
+
+        echo "\n";
+}
+
+function media_print_element( $elements, $indent = 2 ) {
+
+        echo "\n";
+        foreach ( (array)$elements as $name => $data ) {
+
+                echo str_repeat("\t", $indent) . "<media:$name";
+                if ( !empty($data['attr']) ) {
+                        foreach ( $data['attr'] as $attr => $value )
+                                echo " $attr=\"" . ent2ncr($value) . "\"";
+                }
+                if ( !empty($data['children']) ) {
+                        $nl = false;
+                        echo ">";
+                        foreach ( $data['children'] as $_name => $_data ) {
+
+                                if ( is_int($_name) ) {
+
+                                        if ( !is_array( $_data ) ){
+                                                echo ent2ncr($_data);
+                                        }else {
+                                                //allow nested same level elements
+                                                $nl = true;
+                                                media_print_element( $_data, $indent + 1 );
+                                        }
+
+                                } else {
+                                        $nl = true;
+                                        media_print_element( array( $_name => $_data ), $indent + 1 );
+                                }
+                        }
+
+                        if ( $nl )
+                                echo str_repeat("\t", $indent);
+
+                        echo "</media:$name>\n";
+                } else {
+                        echo " />\n";
+                }
+        }
+}