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<?php |
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require_once( AMP__ROOT__ . '/includes/embeds/class-amp-base-embed-handler.php' ); |
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// Much of this class is borrowed from Jetpack embeds |
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class AMP_YouTube_Embed_Handler extends AMP_Base_Embed_Handler { |
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const SHORT_URL_HOST = 'youtu.be'; |
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// Only handling single videos. Playlists are handled elsewhere. |
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const URL_PATTERN = '#https?://(?:www\.)?(?:youtube.com/(?:v/|e/|embed/|watch[/\#?])|youtu\.be/).*#i'; |
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const RATIO = 0.5625; |
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protected $DEFAULT_WIDTH = 600; |
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protected $DEFAULT_HEIGHT = 338; |
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private static $script_slug = 'amp-youtube'; |
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private static $script_src = 'https://cdn.ampproject.org/v0/amp-youtube-0.1.js'; |
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function __construct( $args = array() ) { |
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parent::__construct( $args ); |
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if ( isset( $this->args['content_max_width'] ) ) { |
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$max_width = $this->args['content_max_width']; |
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$this->args['width'] = $max_width; |
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$this->args['height'] = round( $max_width * self::RATIO ); |
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} |
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} |
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function register_embed() { |
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wp_embed_register_handler( 'amp-youtube', self::URL_PATTERN, array( $this, 'oembed' ), -1 ); |
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add_shortcode( 'youtube', array( $this, 'shortcode' ) ); |
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} |
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public function unregister_embed() { |
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wp_embed_unregister_handler( 'amp-youtube', -1 ); |
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remove_shortcode( 'youtube' ); |
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} |
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public function get_scripts() { |
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if ( ! $this->did_convert_elements ) { |
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return array(); |
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} |
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return array( self::$script_slug => self::$script_src ); |
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} |
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public function shortcode( $attr ) { |
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$url = false; |
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$video_id = false; |
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if ( isset( $attr[0] ) ) { |
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$url = ltrim( $attr[0] , '=' ); |
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} elseif ( function_exists ( 'shortcode_new_to_old_params' ) ) { |
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$url = shortcode_new_to_old_params( $attr ); |
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} |
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if ( empty( $url ) ) { |
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return ''; |
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} |
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$video_id = $this->get_video_id_from_url( $url ); |
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return $this->render( array( |
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'url' => $url, |
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'video_id' => $video_id, |
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) ); |
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} |
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public function oembed( $matches, $attr, $url, $rawattr ) { |
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return $this->shortcode( array( $url ) ); |
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} |
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public function render( $args ) { |
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$args = wp_parse_args( $args, array( |
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'video_id' => false, |
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) ); |
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if ( empty( $args['video_id'] ) ) { |
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return AMP_HTML_Utils::build_tag( 'a', array( 'href' => esc_url( $args['url'] ), 'class' => 'amp-wp-embed-fallback' ), esc_html( $args['url'] ) ); |
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} |
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$this->did_convert_elements = true; |
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return AMP_HTML_Utils::build_tag( |
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'amp-youtube', |
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array( |
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'data-videoid' => $args['video_id'], |
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'layout' => 'responsive', |
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'width' => $this->args['width'], |
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'height' => $this->args['height'], |
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) |
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); |
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} |
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private function get_video_id_from_url( $url ) { |
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$video_id = false; |
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$parsed_url = parse_url( $url ); |
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if ( self::SHORT_URL_HOST === substr( $parsed_url['host'], -strlen( self::SHORT_URL_HOST ) ) ) { |
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// youtu.be/{id} |
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$parts = explode( '/', $parsed_url['path'] ); |
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if ( ! empty( $parts ) ) { |
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$video_id = $parts[1]; |
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} |
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} else { |
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// ?v={id} or ?list={id} |
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parse_str( $parsed_url['query'], $query_args ); |
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if ( isset( $query_args['v'] ) ) { |
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$video_id = $this->sanitize_v_arg( $query_args['v'] ); |
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} |
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} |
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if ( empty( $video_id ) ) { |
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// /(v|e|embed)/{id} |
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$parts = explode( '/', $parsed_url['path'] ); |
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if ( in_array( $parts[1], array( 'v', 'e', 'embed' ) ) ) { |
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$video_id = $parts[2]; |
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} |
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} |
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return $video_id; |
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} |
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private function sanitize_v_arg( $value ) { |
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// Deal with broken params like `?v=123?rel=0` |
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if ( false !== strpos( $value, '?' ) ) { |
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$value = strtok( $value, '?' ); |
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} |
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return $value; |
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} |
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} |
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Automattic /
jetpack
This check looks for variable assignements that are either overwritten by other assignments or where the variable is not used subsequently.
Both the
$myVarassignment in line 1 and the$higherassignment in line 2 are dead. The first because$myVaris never used and the second because$higheris always overwritten for every possible time line.