add wp-rocket

wp-content/plugins/wp-rocket/inc/ThirdParty/Plugins/Optimization/AMP.php

@@ -0,0 +1,159 @@
+<?php
+namespace WP_Rocket\ThirdParty\Plugins\Optimization;
+
+use WP_Rocket\Admin\Options_Data;
+use WP_Rocket\Engine\CDN\Subscriber;
+use WP_Rocket\Event_Management\Subscriber_Interface;
+
+/**
+ * Subscriber for compatibility with AMP
+ *
+ * @since  3.5.2
+ */
+class AMP implements Subscriber_Interface {
+	const QUERY       = 'amp';
+	const AMP_OPTIONS = 'amp-options';
+
+	/**
+	 * WP Rocket CDN Subscriber.
+	 *
+	 * @var Subscriber_Interface
+	 */
+	private $cdn_subscriber;
+
+	/**
+	 * WP Rocket Options instance
+	 *
+	 * @var Options_Data
+	 */
+	private $options;
+
+	/**
+	 * Constructor
+	 *
+	 * @param Options_Data         $options        WP Rocket Options instance.
+	 * @param Subscriber_Interface $cdn_subscriber WP Rocket CDN Subscriber.
+	 */
+	public function __construct( Options_Data $options, Subscriber_Interface $cdn_subscriber ) {
+		$this->options        = $options;
+		$this->cdn_subscriber = $cdn_subscriber;
+	}
+
+	/**
+	 * Subscribed events for AMP.
+	 *
+	 * @since  3.5.2
+	 */
+	public static function get_subscribed_events() {
+		$events = [
+			'activate_amp/amp.php'   => 'generate_config_file',
+			'deactivate_amp/amp.php' => 'generate_config_file',
+			'wp'                     => 'disable_options_on_amp',
+		];
+		if ( function_exists( 'is_amp_endpoint' ) ) {
+			$events['rocket_cache_query_strings'] = 'is_amp_compatible_callback';
+			$events['update_option_amp-options']  = 'generate_config_file';
+		}
+
+		return $events;
+	}
+
+	/**
+	 * Regenerate config file on plugin activation / deactivation.
+	 *
+	 * @since  3.5.2
+	 */
+	public function generate_config_file() {
+		rocket_generate_config_file();
+	}
+
+	/**
+	 * Add compatibility with AMP query string by adding it as a cached query string.
+	 *
+	 * @since  3.5.2
+	 *
+	 * @param  array $value WP Rocket cache_query_strings value.
+	 * @return array
+	 */
+	public function is_amp_compatible_callback( $value ) {
+		$options       = get_option( self::AMP_OPTIONS, [] );
+		$query_strings = array_diff( $value, [ static::QUERY ] );
+
+		if ( empty( $options['theme_support'] ) ) {
+			return $query_strings;
+		}
+
+		if ( in_array( $options['theme_support'], [ 'transitional', 'reader' ], true ) ) {
+			$query_strings[] = static::QUERY;
+		}
+
+		return $query_strings;
+	}
+
+	/**
+	 * Removes Minification, DNS Prefetch, LazyLoad, Defer JS when on an AMP document.
+	 *
+	 * This covers AMP documents as output by the official AMP plugin for WordPress
+	 * (https://amp-wp.org/) as well as Web Stories for WordPress (https://wp.stories.google/),
+	 * which both support the `is_amp_endpoint` function checks.
+	 *
+	 * However, in the case of Web Stories, `is_amp_endpoint` is only defined on
+	 * the `wp` action, not earlier. Hence doing the `function_exists` check at this stage
+	 * instead of in the `get_subscribed_events()` method.
+	 *
+	 * @since  3.5.2
+	 */
+	public function disable_options_on_amp() {
+		if ( ! function_exists( 'is_amp_endpoint' ) || ! is_amp_endpoint() ) {
+			return;
+		}
+
+		global $wp_filter;
+
+		remove_filter( 'wp_resource_hints', 'rocket_dns_prefetch', 10, 2 );
+		add_filter( 'do_rocket_lazyload', '__return_false' );
+		add_filter( 'do_rocket_lazyload_iframes', '__return_false' );
+		unset( $wp_filter['rocket_buffer'] );
+
+		$options = get_option( self::AMP_OPTIONS, [] );
+
+		if ( ! empty( $options['theme_support'] )
+			&&
+			in_array( $options['theme_support'], [ 'transitional', 'reader' ], true ) ) {
+			add_filter( 'rocket_cdn_reject_files', [ $this, 'reject_files' ], PHP_INT_MAX );
+			add_filter( 'rocket_buffer', [ $this->cdn_subscriber, 'rewrite' ] );
+			add_filter( 'rocket_buffer', [ $this->cdn_subscriber, 'rewrite_srcset' ] );
+		}
+
+		if (
+			(bool) $this->options->get( 'do_cloudflare', 0 )
+			&&
+			(
+				(bool) $this->options->get( 'cloudflare_protocol_rewrite', 0 )
+				||
+				// this filter is documented in inc/front/protocol.php.
+				(bool) apply_filters( 'do_rocket_protocol_rewrite', false ) // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals
+			)
+		) {
+			remove_filter( 'wp_calculate_image_srcset', 'rocket_protocol_rewrite_srcset', PHP_INT_MAX );
+		}
+	}
+
+	/**
+	 * Adds all CSS and JS files to the list of excluded CDN files.
+	 *
+	 * @since 3.5.5
+	 *
+	 * @param  array $files List of excluded files.
+	 * @return array        List of excluded files.
+	 */
+	public function reject_files( $files ) {
+		return array_merge(
+			$files,
+			[
+				'(.*).css',
+				'(.*).js',
+			]
+		);
+	}
+}