! in_array( $post->post_type, $cache_oembed_types, true ) ) { return; } // Trigger a caching. if ( ! empty( $post->post_content ) ) { $this->post_ID = $post->ID; $this->usecache = false; $content = $this->run_shortcode( $post->post_content ); $this->autoembed( $content ); $this->usecache = true; } } /** * Passes any unlinked URLs that are on their own line to WP_Embed::shortcode() for potential embedding. * * @see WP_Embed::autoembed_callback() * * @param string $content The content to be searched. * @return string Potentially modified $content. */ public function autoembed( $content ) { // Replace line breaks from all HTML elements with placeholders. $content = wp_replace_in_html_tags( $content, array( "\n" => '' ) ); if ( preg_match( '#(^|\s|>)https?://#i', $content ) ) { // Find URLs on their own line. $content = preg_replace_callback( '|^(\s*)(https?://[^\s<>"]+)(\s*)$|im', array( $this, 'autoembed_callback' ), $content ); // Find URLs in their own paragraph. $content = preg_replace_callback( '|(]*)?>\s*)(https?://[^\s<>"]+)(\s*<\/p>)|i', array( $this, 'autoembed_callback' ), $content ); } // Put the line breaks back. return str_replace( '', "\n", $content ); } /** * Callback function for WP_Embed::autoembed(). * * @param array $matches A regex match array. * @return string The embed HTML on success, otherwise the original URL. */ public function autoembed_callback( $matches ) { $oldval = $this->linkifunknown; $this->linkifunknown = false; $return = $this->shortcode( array(), $matches[2] ); $this->linkifunknown = $oldval; return $matches[1] . $return . $matches[3]; } /** * Conditionally makes a hyperlink based on an internal class variable. * * @param string $url URL to potentially be linked. * @return string|false Linked URL or the original URL. False if 'return_false_on_fail' is true. */ public function maybe_make_link( $url ) { if ( $this->return_false_on_fail ) { return false; } $output = ( $this->linkifunknown ) ? '' . esc_html( $url ) . '' : $url; /** * Filters the returned, maybe-linked embed URL. * * @since 2.9.0 * * @param string $output The linked or original URL. * @param string $url The original URL. */ return apply_filters( 'embed_maybe_make_link', $output, $url ); } /** * Finds the oEmbed cache post ID for a given cache key. * * @since 4.9.0 * * @param string $cache_key oEmbed cache key. * @return int|null Post ID on success, null on failure. */ public function find_oembed_post_id( $cache_key ) { $cache_group = 'oembed_cache_post'; $oembed_post_id = wp_cache_get( $cache_key, $cache_group ); if ( $oembed_post_id && 'oembed_cache' === get_post_type( $oembed_post_id ) ) { return $oembed_post_id; } $oembed_post_query = new WP_Query( array( 'post_type' => 'oembed_cache', 'post_status' => 'publish', 'name' => $cache_key, 'posts_per_page' => 1, 'no_found_rows' => true, 'cache_results' => true, 'update_post_meta_cache' => false, 'update_post_term_cache' => false, 'lazy_load_term_meta' => false, ) ); if ( ! empty( $oembed_post_query->posts ) ) { // Note: 'fields' => 'ids' is not being used in order to cache the post object as it will be needed. $oembed_post_id = $oembed_post_query->posts[0]->ID; wp_cache_set( $cache_key, $oembed_post_id, $cache_group ); return $oembed_post_id; } return null; } }