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msd2/wordpress/wp-content/plugins/amp/includes/embeds/class-amp-soundcloud-embed.php

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+<?php
+/**
+ * Class AMP_SoundCloud_Embed_Handler
+ *
+ * @package AMP
+ */
+
+/**
+ * Class AMP_SoundCloud_Embed_Handler
+ *
+ * @since 0.5
+ */
+class AMP_SoundCloud_Embed_Handler extends AMP_Base_Embed_Handler {
+
+	/**
+	 * Default height.
+	 *
+	 * @var int
+	 */
+	protected $DEFAULT_HEIGHT = 200;
+
+	/**
+	 * Register embed.
+	 */
+	public function register_embed() {
+		add_shortcode( 'soundcloud', array( $this, 'shortcode' ) );
+		add_filter( 'embed_oembed_html', array( $this, 'filter_embed_oembed_html' ), 10, 2 );
+	}
+
+	/**
+	 * Unregister embed.
+	 */
+	public function unregister_embed() {
+		remove_shortcode( 'soundcloud' );
+		remove_filter( 'embed_oembed_html', array( $this, 'filter_embed_oembed_html' ), 10 );
+	}
+
+	/**
+	 * Render oEmbed.
+	 *
+	 * @see \WP_Embed::shortcode()
+	 *
+	 * @deprecated Core's oEmbed handler is now used instead, with embed_oembed_html filter used to convert to AMP.
+	 * @param array  $matches URL pattern matches.
+	 * @param array  $attr    Shortcode attribues.
+	 * @param string $url     URL.
+	 * @return string Rendered oEmbed.
+	 */
+	public function oembed( $matches, $attr, $url ) {
+		_deprecated_function( __METHOD__, '0.6' );
+		unset( $matches, $attr );
+		$track_id = $this->get_track_id_from_url( $url );
+		return $this->render( compact( 'track_id' ) );
+	}
+
+	/**
+	 * Filter oEmbed HTML for SoundCloud to convert to AMP.
+	 *
+	 * @param string $cache Cache for oEmbed.
+	 * @param string $url   Embed URL.
+	 * @return string Embed.
+	 */
+	public function filter_embed_oembed_html( $cache, $url ) {
+		$parsed_url = wp_parse_url( $url );
+		if ( false === strpos( $parsed_url['host'], 'soundcloud.com' ) ) {
+			return $cache;
+		}
+		return $this->parse_amp_component_from_iframe( $cache );
+	}
+
+	/**
+	 * Parse AMP component from iframe.
+	 *
+	 * @param string $html HTML.
+	 * @return string AMP component or empty if unable to determine SoundCloud ID.
+	 */
+	private function parse_amp_component_from_iframe( $html ) {
+		$embed = '';
+		if ( preg_match( '#<iframe.+?src="(?P<url>.+?)".*>#', $html, $matches ) ) {
+			$src   = html_entity_decode( $matches['url'], ENT_QUOTES );
+			$query = array();
+			parse_str( wp_parse_url( $src, PHP_URL_QUERY ), $query );
+			if ( ! empty( $query['url'] ) ) {
+				$embed = $this->render(
+					array(
+						'track_id' => $this->get_track_id_from_url( $query['url'] ),
+					)
+				);
+			}
+		}
+		return $embed;
+	}
+
+	/**
+	 * Render shortcode.
+	 *
+	 * @param array  $attr    Shortcode attributes.
+	 * @param string $content Shortcode content.
+	 * @return string Rendered shortcode.
+	 */
+	public function shortcode( $attr, $content = null ) {
+		$output = '';
+		if ( function_exists( 'soundcloud_shortcode' ) ) {
+			if ( empty( $attr['url'] ) && ! empty( $attr['id'] ) ) {
+				$attr['url'] = 'https://api.soundcloud.com/tracks/' . intval( $attr['id'] );
+			}
+			$output = soundcloud_shortcode( $attr, $content );
+			$output = $this->parse_amp_component_from_iframe( $output );
+		} else {
+			$url = null;
+			if ( isset( $attr['id'] ) ) {
+				$url = 'https://w.soundcloud.com/player/?url=https%3A%2F%2Fapi.soundcloud.com%2Ftracks%2F' . intval( $attr['id'] );
+			}
+
+			if ( isset( $attr['url'] ) ) {
+				$url = $attr['url'];
+			} elseif ( isset( $attr[0] ) ) {
+				$url = $attr[0];
+			} elseif ( function_exists( 'shortcode_new_to_old_params' ) ) {
+				$url = shortcode_new_to_old_params( $attr );
+			}
+
+			if ( $url ) {
+				$output = $this->render_embed_fallback( $url );
+			}
+		}
+		return $output;
+	}
+
+	/**
+	 * Render embed.
+	 *
+	 * @param array $args Args.
+	 * @return string Rendered embed.
+	 * @global WP_Embed $wp_embed
+	 */
+	public function render( $args ) {
+		$args = wp_parse_args(
+			$args,
+			array(
+				'track_id' => false,
+				'url'      => null,
+			)
+		);
+
+		if ( empty( $args['track_id'] ) ) {
+			return $this->render_embed_fallback( $args['url'] );
+		}
+
+		$this->did_convert_elements = true;
+
+		return AMP_HTML_Utils::build_tag(
+			'amp-soundcloud',
+			array(
+				'data-trackid' => $args['track_id'],
+				'layout'       => 'fixed-height',
+				'height'       => $this->args['height'],
+			)
+		);
+	}
+
+	/**
+	 * Render embed fallback.
+	 *
+	 * @param string $url URL.
+	 * @returns string
+	 */
+	private function render_embed_fallback( $url ) {
+		return AMP_HTML_Utils::build_tag(
+			'a',
+			array(
+				'href'  => esc_url( $url ),
+				'class' => 'amp-wp-embed-fallback',
+			),
+			esc_html( $url )
+		);
+	}
+
+	/**
+	 * Get track_id from URL.
+	 *
+	 * @param string $url URL.
+	 *
+	 * @return string Track ID or empty string if none matched.
+	 */
+	private function get_track_id_from_url( $url ) {
+		$parsed_url = wp_parse_url( $url );
+		if ( ! preg_match( '#tracks/(?P<track_id>[^/]+)#', $parsed_url['path'], $matches ) ) {
+			return '';
+		}
+		return $matches['track_id'];
+	}
+}