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<?php |
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/** |
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* Podcast Player Block. |
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* |
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* @since 8.4.0 |
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* |
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* @package Jetpack |
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*/ |
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namespace Jetpack\Podcast_Player_Block; |
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use WP_Error; |
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use Jetpack_Gutenberg; |
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const FEATURE_NAME = 'podcast-player'; |
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const BLOCK_NAME = 'jetpack/' . FEATURE_NAME; |
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/** |
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* Registers the block for use in Gutenberg |
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* This is done via an action so that we can disable |
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* registration if we need to. |
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*/ |
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function register_block() { |
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jetpack_register_block( |
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BLOCK_NAME, |
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array( |
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'attributes' => array( |
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'url' => array( |
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'type' => 'url', |
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), |
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'itemsToShow' => array( |
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'type' => 'integer', |
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'default' => 5, |
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), |
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), |
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'render_callback' => __NAMESPACE__ . '\render_block', |
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) |
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); |
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} |
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add_action( 'init', __NAMESPACE__ . '\register_block' ); |
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/** |
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* Podcast Player block registration/dependency declaration. |
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* |
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* @param array $attributes Array containing the Podcast Player block attributes. |
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* @return string |
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*/ |
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function render_block( $attributes ) { |
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// Test for empty URLS. |
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if ( empty( $attributes['url'] ) ) { |
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return '<p>' . esc_html__( 'No Podcast URL provided. Please enter a valid Podcast RSS feed URL.', 'jetpack' ) . '</p>'; |
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} |
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// Test for invalid URLs. |
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if ( ! wp_http_validate_url( $attributes['url'] ) ) { |
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return '<p>' . esc_html__( 'Your podcast URL is invalid and couldn\'t be embedded. Please double check your URL.', 'jetpack' ) . '</p>'; |
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} |
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// Sanitize the URL. |
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$attributes['url'] = esc_url_raw( $attributes['url'] ); |
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$track_list = get_track_list( $attributes['url'], 10 ); |
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if ( is_wp_error( $track_list ) ) { |
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return '<p>' . esc_html( $track_list->get_error_message() ) . '</p>'; |
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} |
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return render_player( $track_list, $attributes ); |
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} |
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/** |
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* Renders the HTML for the Podcast player and tracklist. |
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* |
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* @param array $track_list the list of podcast tracks. |
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* @param array $attributes Array containing the Podcast Player block attributes. |
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* @return string the HTML for the podcast player. |
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*/ |
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function render_player( $track_list, $attributes ) { |
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// If there are no tracks (it is possible) then display appropriate user facing error message. |
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if ( empty( $track_list ) ) { |
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return '<p>' . esc_html__( 'No tracks available to play.', 'jetpack' ) . '</p>'; |
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} |
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$player_data = array( |
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'type' => 'audio', |
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// Don't pass strings to JSON, will be truthy in JS. |
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'tracklist' => true, |
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'tracknumbers' => true, |
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'images' => true, |
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'artists' => true, |
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'tracks' => $track_list, |
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); |
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$block_classname = Jetpack_Gutenberg::block_classes( FEATURE_NAME, $attributes ); |
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ob_start(); |
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?> |
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<div class="<?php echo esc_attr( $block_classname ); ?>"> |
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<?php // Placeholder: block markup is being handled in https://github.com/Automattic/jetpack/pull/14952. ?> |
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<script type="application/json" class="wp-playlist-script"><?php echo wp_json_encode( $player_data ); ?></script> |
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</div> |
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<?php |
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/* |
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* Enqueue necessary scripts and styles. |
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*/ |
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Jetpack_Gutenberg::load_assets_as_required( 'podcast-player' ); |
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return ob_get_clean(); |
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} |
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/** |
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* Gets a list of tracks for the supplied RSS feed. |
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* |
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* @param string $feed the RSS feed to load and list tracks for. |
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* @param int $quantity the number of tracks to return. |
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* @return array|WP_Error the feed's tracks or a error object. |
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*/ |
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function get_track_list( $feed, $quantity = 10 ) { |
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$rss = fetch_feed( $feed ); |
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if ( is_wp_error( $rss ) ) { |
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return new WP_Error( 'invalid_url', __( 'Your podcast couldn\'t be embedded. Please double check your URL.', 'jetpack' ) ); |
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} |
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if ( ! $rss->get_item_quantity() ) { |
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return new WP_Error( 'no_tracks', __( 'Podcast audio RSS feed has no tracks.', 'jetpack' ) ); |
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} |
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$track_list = array_map( __NAMESPACE__ . '\setup_tracks_callback', $rss->get_items( 0, $quantity ) ); |
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// Remove empty tracks. |
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return \array_filter( $track_list ); |
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} |
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/** |
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* Prepares Episode data to be used with MediaElement.js. |
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* |
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* @param \SimplePie_Item $episode SimplePie_Item object, representing a podcast episode. |
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* @return array |
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*/ |
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function setup_tracks_callback( \SimplePie_Item $episode ) { |
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$enclosure = $episode->get_enclosure(); |
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// If there is no link return an empty array. We will filter out later. |
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if ( ! $enclosure->link ) { |
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return array(); |
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} |
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// Build track data. |
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$track = array( |
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'link' => esc_url( $episode->get_link() ), |
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'src' => esc_url( $enclosure->link ), |
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'type' => $enclosure->type, |
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'caption' => '', |
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'description' => wp_kses_post( $episode->get_description() ), |
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'meta' => array(), |
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); |
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$track['title'] = esc_html( trim( wp_strip_all_tags( $episode->get_title() ) ) ); |
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if ( empty( $track['title'] ) ) { |
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$track['title'] = esc_html__( '(no title)', 'jetpack' ); |
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} |
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return $track; |
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} |
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Automattic /
jetpack
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This check compares calls to functions or methods with their respective definitions. If the call has more arguments than are defined, it raises an issue.
If a function is defined several times with a different number of parameters, the check may pick up the wrong definition and report false positives. One codebase where this has been known to happen is Wordpress.
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