836 lines
25 KiB
PHP
836 lines
25 KiB
PHP
<?php
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namespace WP_Rocket\Subscriber\Media;
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use WP_Rocket\Admin\Options;
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use WP_Rocket\Admin\Options_Data;
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use WP_Rocket\Engine\Admin\Beacon\Beacon;
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use WP_Rocket\Event_Management\Subscriber_Interface;
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use WP_Rocket\Engine\CDN\Subscriber as CDNSubscriber;
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/**
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* Subscriber for the WebP support.
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*
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* @since 3.4
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* @author Remy Perona
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* @author Grégory Viguier
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*/
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class Webp_Subscriber implements Subscriber_Interface {
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/**
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* Options_Data instance.
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*
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* @var Options_Data
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* @access private
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* @author Remy Perona
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*/
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private $options_data;
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/**
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* Options instance.
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*
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* @var Options
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* @access private
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* @author Grégory Viguier
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*/
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private $options_api;
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/**
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* CDNSubscriber instance.
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*
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* @var CDNSubscriber
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* @access private
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* @author Grégory Viguier
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*/
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private $cdn_subscriber;
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/**
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* Beacon instance
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*
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* @var Beacon
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* @access private
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* @author Grégory Viguier
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*/
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private $beacon;
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/**
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* Values of $_SERVER to use for some tests.
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*
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* @var array
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* @access private
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* @author Grégory Viguier
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*/
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private $server;
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/**
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* \WP_Filesystem_Direct instance.
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*
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* @var \WP_Filesystem_Direct
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* @access private
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* @author Grégory Viguier
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*/
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private $filesystem;
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/**
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* Constructor.
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*
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* @since 3.4
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* @access public
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* @author Remy Perona
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*
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* @param Options_Data $options_data Options_Data instance.
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* @param Options $options_api Options instance.
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* @param CDNSubscriber $cdn_subscriber CDNSubscriber instance.
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* @param Beacon $beacon Beacon instance.
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* @param array $server Values of $_SERVER to use for the tests. Default is $_SERVER.
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*/
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public function __construct( Options_Data $options_data, Options $options_api, CDNSubscriber $cdn_subscriber, Beacon $beacon, $server = null ) {
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$this->options_data = $options_data;
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$this->options_api = $options_api;
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$this->cdn_subscriber = $cdn_subscriber;
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$this->beacon = $beacon;
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if ( ! isset( $server ) && ! empty( $_SERVER ) && is_array( $_SERVER ) ) {
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$server = $_SERVER;
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}
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$this->server = $server && is_array( $server ) ? $server : [];
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}
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/**
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* {@inheritdoc}
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*/
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public static function get_subscribed_events() {
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return [
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'rocket_buffer' => [ 'convert_to_webp', 16 ],
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'rocket_cache_webp_setting_field' => [
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[ 'maybe_disable_setting_field' ],
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[ 'webp_section_description' ],
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],
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'rocket_disable_webp_cache' => 'maybe_disable_webp_cache',
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'rocket_third_party_webp_change' => 'sync_webp_cache_with_third_party_plugins',
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'rocket_preload_before_preload_url' => 'add_accept_header',
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];
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}
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/** ----------------------------------------------------------------------------------------- */
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/** HOOKS =================================================================================== */
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/** ----------------------------------------------------------------------------------------- */
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/**
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* Converts images extension to WebP if the file exists.
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*
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* @since 3.4
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* @access public
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* @author Remy Perona
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* @author Grégory Viguier
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*
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* @param string $html HTML content.
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* @return string
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*/
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public function convert_to_webp( $html ) {
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if ( ! $this->options_data->get( 'cache_webp' ) ) {
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return $html;
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}
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/** This filter is documented in inc/classes/buffer/class-cache.php */
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if ( apply_filters( 'rocket_disable_webp_cache', false ) ) {
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return $html;
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}
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// Only to supporting browsers.
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$http_accept = isset( $this->server['HTTP_ACCEPT'] ) ? $this->server['HTTP_ACCEPT'] : '';
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if ( ! $http_accept && function_exists( 'apache_request_headers' ) ) {
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$headers = apache_request_headers();
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$http_accept = isset( $headers['Accept'] ) ? $headers['Accept'] : '';
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}
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if ( ! $http_accept || false === strpos( $http_accept, 'webp' ) ) {
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$user_agent = isset( $this->server['HTTP_USER_AGENT'] ) ? $this->server['HTTP_USER_AGENT'] : '';
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if ( $user_agent && preg_match( '#Firefox/(?<version>[0-9]{2,})#i', $this->server['HTTP_USER_AGENT'], $matches ) ) {
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if ( 66 >= (int) $matches['version'] ) {
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return $html;
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}
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} else {
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return $html;
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}
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}
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$extensions = $this->get_extensions();
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$attribute_names = $this->get_attribute_names();
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if ( ! $extensions || ! $attribute_names ) {
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return $html . '<!-- Rocket no webp -->';
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}
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$extensions = implode( '|', $extensions );
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$attribute_names = implode( '|', $attribute_names );
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if ( ! preg_match_all( '@["\'\s](?<name>(?:data-(?:[a-z0-9_-]+-)?)?(?:' . $attribute_names . '))\s*=\s*["\']\s*(?<value>(?:https?:/)?/[^"\']+\.(?:' . $extensions . ')[^"\']*?)\s*["\']@is', $html, $attributes, PREG_SET_ORDER ) ) {
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return $html . '<!-- Rocket no webp -->';
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}
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if ( ! isset( $this->filesystem ) ) {
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$this->filesystem = \rocket_direct_filesystem();
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}
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$has_hebp = false;
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foreach ( $attributes as $attribute ) {
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if ( preg_match( '@srcset$@i', strtolower( $attribute['name'] ) ) ) {
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/**
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* This is a srcset attribute, with probably multiple URLs.
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*/
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$new_value = $this->srcset_to_webp( $attribute['value'], $extensions );
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} else {
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/**
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* A single URL attibute.
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*/
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$new_value = $this->url_to_webp( $attribute['value'], $extensions );
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}
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if ( ! $new_value ) {
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// No webp here.
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continue;
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}
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// Replace in content.
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$has_hebp = true;
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$new_attr = preg_replace( '@' . $attribute['name'] . '\s*=\s*["\'][^"\']+["\']@s', $attribute['name'] . '="' . $new_value . '"', $attribute[0] );
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$html = str_replace( $attribute[0], $new_attr, $html );
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}
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/**
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* Tell if the page contains webp files.
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*
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* @since 3.4
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* @author Grégory Viguier
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*
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* @param bool $has_hebp True if the page contains webp files. False otherwise.
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* @param string $html The page’s html contents.
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*/
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$has_hebp = apply_filters( 'rocket_page_has_hebp_files', $has_hebp, $html );
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// Tell the cache process if some URLs have been replaced.
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if ( $has_hebp ) {
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$html .= '<!-- Rocket has webp -->';
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} else {
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$html .= '<!-- Rocket no webp -->';
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}
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return $html;
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}
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/**
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* Modifies the WebP section description of WP Rocket settings.
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*
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* @since 3.4
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* @access public
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* @author Remy Perona
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* @author Grégory Viguier
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*
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* @param array $cache_webp_field Section description.
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* @return array
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*/
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public function webp_section_description( $cache_webp_field ) {
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$webp_beacon = $this->beacon->get_suggest( 'webp' );
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$webp_plugins = $this->get_webp_plugins();
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$serving = [];
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$serving_not_compatible = [];
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$creating = [];
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if ( $webp_plugins ) {
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$is_using_cdn = $this->is_using_cdn();
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foreach ( $webp_plugins as $plugin ) {
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if ( $plugin->is_serving_webp() ) {
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if ( $is_using_cdn && ! $plugin->is_serving_webp_compatible_with_cdn() ) {
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// Serving WebP using a method not compatible with CDN.
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$serving_not_compatible[ $plugin->get_id() ] = $plugin->get_name();
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} else {
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// Serving WebP when no CDN or with a method compatible with CDN.
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$serving[ $plugin->get_id() ] = $plugin->get_name();
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}
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}
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if ( $plugin->is_converting_to_webp() ) {
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// Generating WebP.
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$creating[ $plugin->get_id() ] = $plugin->get_name();
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}
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}
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}
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if ( $serving ) {
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// 5, 8.
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$cache_webp_field['description'] = sprintf(
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// Translators: %1$s = plugin name(s), %2$s = opening <a> tag, %3$s = closing </a> tag.
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esc_html( _n( 'You are using %1$s to serve WebP images so you do not need to enable this option. %2$sMore info%3$s %4$s If you prefer to have WP Rocket serve WebP for you instead, please disable WebP display in %1$s.', 'You are using %1$s to serve WebP images so you do not need to enable this option. %2$sMore info%3$s %4$s If you prefer to have WP Rocket serve WebP for you instead, please disable WebP display in %1$s.', count( $serving ), 'rocket' ) ),
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esc_html( wp_sprintf_l( '%l', $serving ) ),
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'<a href="' . esc_url( $webp_beacon['url'] ) . '" data-beacon-article="' . esc_attr( $webp_beacon['id'] ) . '" target="_blank" rel="noopener noreferrer">',
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'</a>',
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'<br>'
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);
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return $cache_webp_field;
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}
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/** This filter is documented in inc/classes/buffer/class-cache.php */
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if ( apply_filters( 'rocket_disable_webp_cache', false ) ) {
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$cache_webp_field['description'] = esc_html__( 'WebP cache is disabled by filter.', 'rocket' );
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return $cache_webp_field;
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}
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if ( $serving_not_compatible ) {
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if ( ! $this->options_data->get( 'cache_webp' ) ) {
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// 6.
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$cache_webp_field['description'] = sprintf(
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// Translators: %1$s = plugin name(s), %2$s = opening <a> tag, %3$s = closing </a> tag.
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esc_html( _n( 'You are using %1$s to convert images to WebP. If you want WP Rocket to serve them for you, activate this option. %2$sMore info%3$s', 'You are using %1$s to convert images to WebP. If you want WP Rocket to serve them for you, activate this option. %2$sMore info%3$s', count( $serving_not_compatible ), 'rocket' ) ),
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esc_html( wp_sprintf_l( '%l', $serving_not_compatible ) ),
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'<a href="' . esc_url( $webp_beacon['url'] ) . '" data-beacon-article="' . esc_attr( $webp_beacon['id'] ) . '" target="_blank" rel="noopener noreferrer">',
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'</a>'
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);
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return $cache_webp_field;
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}
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// 7.
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$cache_webp_field['description'] = sprintf(
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// Translators: %1$s = plugin name(s), %2$s = opening <a> tag, %3$s = closing </a> tag.
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esc_html( _n( 'You are using %1$s to convert images to WebP. WP Rocket will create separate cache files to serve your WebP images. %2$sMore info%3$s', 'You are using %1$s to convert images to WebP. WP Rocket will create separate cache files to serve your WebP images. %2$sMore info%3$s', count( $serving_not_compatible ), 'rocket' ) ),
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esc_html( wp_sprintf_l( '%l', $serving_not_compatible ) ),
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'<a href="' . esc_url( $webp_beacon['url'] ) . '" data-beacon-article="' . esc_attr( $webp_beacon['id'] ) . '" target="_blank" rel="noopener noreferrer">',
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'</a>'
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);
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return $cache_webp_field;
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}
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if ( $creating ) {
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if ( ! $this->options_data->get( 'cache_webp' ) ) {
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// 3.
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$cache_webp_field['description'] = sprintf(
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// Translators: %1$s = plugin name(s), %2$s = opening <a> tag, %3$s = closing </a> tag.
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esc_html( _n( 'You are using %1$s to convert images to WebP. If you want WP Rocket to serve them for you, activate this option. %2$sMore info%3$s', 'You are using %1$s to convert images to WebP. If you want WP Rocket to serve them for you, activate this option. %2$sMore info%3$s', count( $creating ), 'rocket' ) ),
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esc_html( wp_sprintf_l( '%l', $creating ) ),
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'<a href="' . esc_url( $webp_beacon['url'] ) . '" data-beacon-article="' . esc_attr( $webp_beacon['id'] ) . '" target="_blank" rel="noopener noreferrer">',
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'</a>'
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);
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return $cache_webp_field;
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}
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|
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// 4.
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$cache_webp_field['description'] = sprintf(
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// Translators: %1$s = plugin name(s), %2$s = opening <a> tag, %3$s = closing </a> tag.
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esc_html( _n( 'You are using %1$s to convert images to WebP. WP Rocket will create separate cache files to serve your WebP images. %2$sMore info%3$s', 'You are using %1$s to convert images to WebP. WP Rocket will create separate cache files to serve your WebP images. %2$sMore info%3$s', count( $creating ), 'rocket' ) ),
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esc_html( wp_sprintf_l( '%l', $creating ) ),
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'<a href="' . esc_url( $webp_beacon['url'] ) . '" data-beacon-article="' . esc_attr( $webp_beacon['id'] ) . '" target="_blank" rel="noopener noreferrer">',
|
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'</a>'
|
||
);
|
||
|
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return $cache_webp_field;
|
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}
|
||
|
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if ( ! $this->options_data->get( 'cache_webp' ) ) {
|
||
// 1.
|
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if ( rocket_valid_key() && ! \Imagify_Partner::has_imagify_api_key() ) {
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$imagify_link = '<a href="#imagify">';
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||
} else {
|
||
// The Imagify page is not displayed.
|
||
$imagify_link = '<a href="https://wordpress.org/plugins/imagify/" target="_blank" rel="noopener noreferrer">';
|
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}
|
||
|
||
$cache_webp_field['description'] = sprintf(
|
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// Translators: %1$s = opening <a> tag, %2$s = closing </a> tag.
|
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esc_html__( '%5$sWe have not detected any compatible WebP plugin!%6$s%4$s If you don’t already have WebP images on your site consider using %3$sImagify%2$s or another supported plugin. %1$sMore info%2$s %4$s If you are not using WebP do not enable this option.', 'rocket' ),
|
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'<a href="' . esc_url( $webp_beacon['url'] ) . '" data-beacon-article="' . esc_attr( $webp_beacon['id'] ) . '" target="_blank" rel="noopener noreferrer">',
|
||
'</a>',
|
||
$imagify_link,
|
||
'<br>',
|
||
'<strong>',
|
||
'</strong>'
|
||
);
|
||
return $cache_webp_field;
|
||
}
|
||
|
||
// 2.
|
||
$cache_webp_field['description'] = esc_html__( 'WP Rocket will create separate cache files to serve your WebP images.', 'rocket' );
|
||
|
||
return $cache_webp_field;
|
||
}
|
||
|
||
/**
|
||
* Disable 'cache_webp' setting field if another plugin serves WebP.
|
||
*
|
||
* @since 3.4
|
||
* @access public
|
||
* @author Grégory Viguier
|
||
*
|
||
* @param array $cache_webp_field Data to be added to the setting field.
|
||
* @return array
|
||
*/
|
||
public function maybe_disable_setting_field( $cache_webp_field ) {
|
||
/** This filter is documented in inc/classes/buffer/class-cache.php */
|
||
if ( ! apply_filters( 'rocket_disable_webp_cache', false ) ) {
|
||
return $cache_webp_field;
|
||
}
|
||
|
||
foreach ( [ 'input_attr', 'container_class' ] as $attr ) {
|
||
if ( ! isset( $cache_webp_field[ $attr ] ) || ! is_array( $cache_webp_field[ $attr ] ) ) {
|
||
$cache_webp_field[ $attr ] = [];
|
||
}
|
||
}
|
||
|
||
$cache_webp_field['input_attr']['disabled'] = 1;
|
||
|
||
return $cache_webp_field;
|
||
}
|
||
|
||
/**
|
||
* Disable the WebP cache if a WebP plugin is in use.
|
||
*
|
||
* @since 3.4
|
||
* @access public
|
||
* @author Grégory Viguier
|
||
*
|
||
* @param bool $disable_webp_cache True to allow WebP cache (default). False otherwise.
|
||
* @return bool
|
||
*/
|
||
public function maybe_disable_webp_cache( $disable_webp_cache ) {
|
||
return ! $disable_webp_cache && $this->get_plugins_serving_webp() ? true : (bool) $disable_webp_cache;
|
||
}
|
||
|
||
/**
|
||
* When a 3rd party plugin enables or disables its webp feature, disable or enable WPR feature accordingly.
|
||
*
|
||
* @since 3.4
|
||
* @access public
|
||
* @author Grégory Viguier
|
||
*/
|
||
public function sync_webp_cache_with_third_party_plugins() {
|
||
if ( $this->options_data->get( 'cache_webp' ) && $this->get_plugins_serving_webp() ) {
|
||
// Disable the cache webp option.
|
||
$this->options_data->set( 'cache_webp', 0 );
|
||
$this->options_api->set( 'settings', $this->options_data->get_options() );
|
||
}
|
||
rocket_generate_config_file();
|
||
}
|
||
|
||
/**
|
||
* Add WebP to the HTTP_ACCEPT headers on preload request when the WebP option is active
|
||
*
|
||
* @param array $requests Requests to make.
|
||
* @return array
|
||
*/
|
||
public function add_accept_header( $requests ) {
|
||
|
||
if ( ! is_array( $requests ) || ! $this->options_data->get( 'cache_webp' ) ) {
|
||
return $requests;
|
||
}
|
||
|
||
return array_map(
|
||
function ( $request ) {
|
||
$request['headers']['headers']['Accept'] = 'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8';
|
||
$request['headers']['headers']['HTTP_ACCEPT'] = 'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8';
|
||
return $request;
|
||
},
|
||
$requests
|
||
);
|
||
}
|
||
|
||
/** ----------------------------------------------------------------------------------------- */
|
||
/** TOOLS =================================================================================== */
|
||
/** ----------------------------------------------------------------------------------------- */
|
||
|
||
/**
|
||
* Get the list of file extensions that may have a webp version.
|
||
*
|
||
* @since 3.4
|
||
* @access private
|
||
* @author Grégory Viguier
|
||
*
|
||
* @return array
|
||
*/
|
||
private function get_extensions() {
|
||
$extensions = [ 'jpg', 'jpeg', 'jpe', 'png', 'gif' ];
|
||
|
||
/**
|
||
* Filter the list of file extensions that may have a webp version.
|
||
*
|
||
* @since 3.4
|
||
* @author Grégory Viguier
|
||
*
|
||
* @param array $extensions An array of file extensions.
|
||
*/
|
||
$extensions = apply_filters( 'rocket_file_extensions_for_webp', $extensions );
|
||
$extensions = array_filter(
|
||
(array) $extensions,
|
||
function( $extension ) {
|
||
return $extension && is_string( $extension );
|
||
}
|
||
);
|
||
|
||
return array_unique( $extensions );
|
||
}
|
||
|
||
/**
|
||
* Get the names of the HTML attributes where WP Rocket must search for image files.
|
||
*
|
||
* @since 3.4
|
||
* @access private
|
||
* @author Grégory Viguier
|
||
*
|
||
* @return array
|
||
*/
|
||
private function get_attribute_names() {
|
||
$attributes = [ 'href', 'src', 'srcset', 'data-large_image', 'data-thumb' ];
|
||
|
||
/**
|
||
* Filter the names of the HTML attributes where WP Rocket must search for image files.
|
||
* Don't prepend new names with `data-`, WPR will do it. For example if you want to add `data-foo-bar`, you only need to add `foo-bar` or `bar` to the list.
|
||
*
|
||
* @since 3.4
|
||
* @author Grégory Viguier
|
||
*
|
||
* @param array $attributes An array of HTML attribute names.
|
||
*/
|
||
$attributes = apply_filters( 'rocket_attributes_for_webp', $attributes );
|
||
$attributes = array_filter(
|
||
(array) $attributes,
|
||
function( $attributes ) {
|
||
return $attributes && is_string( $attributes );
|
||
}
|
||
);
|
||
|
||
return array_unique( $attributes );
|
||
}
|
||
|
||
/**
|
||
* Convert a URL to an absolute path.
|
||
*
|
||
* @since 3.4
|
||
* @access private
|
||
* @author Grégory Viguier
|
||
*
|
||
* @param string $url URL to convert.
|
||
* @return string|bool
|
||
*/
|
||
private function url_to_path( $url ) {
|
||
static $hosts, $site_host, $subdir_levels;
|
||
|
||
$url_host = wp_parse_url( $url, PHP_URL_HOST );
|
||
|
||
// Relative path.
|
||
if ( null === $url_host ) {
|
||
if ( ! isset( $subdir_levels ) ) {
|
||
$subdir_levels = substr_count( preg_replace( '@^https?://@', '', site_url() ), '/' );
|
||
}
|
||
|
||
if ( $subdir_levels ) {
|
||
$url = ltrim( $url, '/' );
|
||
$url = explode( '/', $url );
|
||
array_splice( $url, 0, $subdir_levels );
|
||
$url = implode( '/', $url );
|
||
}
|
||
|
||
$url = site_url( $url );
|
||
}
|
||
|
||
// CDN.
|
||
if ( ! isset( $hosts ) ) {
|
||
$hosts = $this->cdn_subscriber->get_cdn_hosts( [], [ 'all', 'images' ] );
|
||
$hosts = array_flip( $hosts );
|
||
}
|
||
|
||
if ( isset( $hosts[ $url_host ] ) ) {
|
||
if ( ! isset( $site_host ) ) {
|
||
$site_host = wp_parse_url( site_url( '/' ), PHP_URL_HOST );
|
||
}
|
||
if ( $site_host ) {
|
||
$url = preg_replace( '@^(https?://)' . $url_host . '/@', '$1' . $site_host . '/', $url );
|
||
}
|
||
}
|
||
|
||
// URL to path.
|
||
$url = preg_replace( '@^https?:@', '', $url );
|
||
$paths = $this->get_url_to_path_associations();
|
||
|
||
if ( ! $paths ) {
|
||
// Uh?
|
||
return false;
|
||
}
|
||
|
||
foreach ( $paths as $asso_url => $asso_path ) {
|
||
if ( 0 === strpos( $url, $asso_url ) ) {
|
||
$file = str_replace( $asso_url, $asso_path, $url );
|
||
break;
|
||
}
|
||
}
|
||
|
||
if ( empty( $file ) ) {
|
||
return false;
|
||
}
|
||
|
||
/** This filter is documented in inc/functions/formatting.php. */
|
||
return (string) apply_filters( 'rocket_url_to_path', $file, $url );
|
||
}
|
||
|
||
/**
|
||
* Add a webp extension to a URL.
|
||
*
|
||
* @since 3.4
|
||
* @access private
|
||
* @author Grégory Viguier
|
||
*
|
||
* @param string $url A URL (I see you're very surprised).
|
||
* @param string $extensions Allowed image extensions.
|
||
* @return string|bool The same URL with a webp extension if the file exists. False if the webp image doesn't exist.
|
||
*/
|
||
private function url_to_webp( $url, $extensions ) {
|
||
if ( ! preg_match( '@^(?<src>.+\.(?<extension>' . $extensions . '))(?<query>(?:\?.*)?)$@i', $url, $src_url ) ) {
|
||
// Probably something like "image.jpg.webp".
|
||
return false;
|
||
}
|
||
|
||
$src_path = $this->url_to_path( $src_url['src'] );
|
||
|
||
if ( ! $src_path ) {
|
||
return false;
|
||
}
|
||
|
||
$src_path_webp = preg_replace( '@\.' . $src_url['extension'] . '$@', '.webp', $src_path );
|
||
|
||
if ( $this->filesystem->exists( $src_path_webp ) ) {
|
||
// File name: image.jpg => image.webp.
|
||
return preg_replace( '@\.' . $src_url['extension'] . '$@', '.webp', $src_url['src'] ) . $src_url['query'];
|
||
}
|
||
|
||
if ( $this->filesystem->exists( $src_path . '.webp' ) ) {
|
||
// File name: image.jpg => image.jpg.webp.
|
||
return $src_url['src'] . '.webp' . $src_url['query'];
|
||
}
|
||
|
||
return false;
|
||
}
|
||
|
||
/**
|
||
* Add webp extension to URLs in a srcset attribute.
|
||
*
|
||
* @since 3.4
|
||
* @access private
|
||
* @author Grégory Viguier
|
||
*
|
||
* @param array|string $srcset_values Value of a srcset attribute.
|
||
* @param string $extensions Allowed image extensions.
|
||
* @return string|bool An array similar to $srcset_values, with webp extensions when the files exist. False if no images have webp versions.
|
||
*/
|
||
private function srcset_to_webp( $srcset_values, $extensions ) {
|
||
if ( ! $srcset_values ) {
|
||
return false;
|
||
}
|
||
|
||
if ( ! is_array( $srcset_values ) ) {
|
||
$srcset_values = explode( ',', $srcset_values );
|
||
}
|
||
|
||
$has_webp = false;
|
||
|
||
foreach ( $srcset_values as $i => $srcset_value ) {
|
||
$srcset_value = preg_split( '/\s+/', trim( $srcset_value ) );
|
||
|
||
if ( count( $srcset_value ) > 2 ) {
|
||
// Not a good idea to have space characters in file name.
|
||
$descriptor = array_pop( $srcset_value );
|
||
$srcset_value = [
|
||
'url' => implode( ' ', $srcset_value ),
|
||
'descriptor' => $descriptor,
|
||
];
|
||
} else {
|
||
$srcset_value = [
|
||
'url' => $srcset_value[0],
|
||
'descriptor' => ! empty( $srcset_value[1] ) ? $srcset_value[1] : '1x',
|
||
];
|
||
}
|
||
|
||
$url_webp = $this->url_to_webp( $srcset_value['url'], $extensions );
|
||
|
||
if ( ! $url_webp ) {
|
||
$srcset_values[ $i ] = implode( ' ', $srcset_value );
|
||
continue;
|
||
}
|
||
|
||
$srcset_values[ $i ] = $url_webp . ' ' . $srcset_value['descriptor'];
|
||
$has_webp = true;
|
||
}
|
||
|
||
if ( ! $has_webp ) {
|
||
return false;
|
||
}
|
||
|
||
return implode( ',', $srcset_values );
|
||
}
|
||
|
||
/**
|
||
* Get a list of URL/path associations.
|
||
* URLs are schema-less, starting by a double slash.
|
||
*
|
||
* @since 3.4
|
||
* @access private
|
||
* @author Grégory Viguier
|
||
*
|
||
* @return array A list of URLs as keys and paths as values.
|
||
*/
|
||
private function get_url_to_path_associations() {
|
||
static $list;
|
||
|
||
if ( isset( $list ) ) {
|
||
return $list;
|
||
}
|
||
|
||
$content_url = preg_replace( '@^https?:@', '', content_url( '/' ) );
|
||
$content_dir = trailingslashit( rocket_get_constant( 'WP_CONTENT_DIR' ) );
|
||
$list = [ $content_url => $content_dir ];
|
||
|
||
/**
|
||
* Filter the list of URL/path associations.
|
||
* The URLs with the most levels must come first.
|
||
*
|
||
* @since 3.4
|
||
* @author Grégory Viguier
|
||
*
|
||
* @param array $list The list of URL/path associations. URLs are schema-less, starting by a double slash.
|
||
*/
|
||
$list = apply_filters( 'rocket_url_to_path_associations', $list );
|
||
$list = array_filter(
|
||
$list,
|
||
function( $path, $url ) {
|
||
return $path && $url && is_string( $path ) && is_string( $url );
|
||
},
|
||
ARRAY_FILTER_USE_BOTH
|
||
);
|
||
|
||
if ( $list ) {
|
||
$list = array_unique( $list );
|
||
}
|
||
|
||
return $list;
|
||
}
|
||
|
||
/**
|
||
* Get a list of plugins that serve webp images on frontend.
|
||
* If the CDN is used, this won't list plugins that use a technique not compatible with CDN.
|
||
*
|
||
* @since 3.4
|
||
* @access private
|
||
* @author Grégory Viguier
|
||
*
|
||
* @return array The WebP plugin names.
|
||
*/
|
||
private function get_plugins_serving_webp() {
|
||
$webp_plugins = $this->get_webp_plugins();
|
||
|
||
if ( ! $webp_plugins ) {
|
||
// Somebody probably messed up.
|
||
return [];
|
||
}
|
||
|
||
$checks = [];
|
||
$is_using_cdn = $this->is_using_cdn();
|
||
|
||
foreach ( $webp_plugins as $plugin ) {
|
||
if ( $is_using_cdn && $plugin->is_serving_webp_compatible_with_cdn() ) {
|
||
$checks[ $plugin->get_id() ] = $plugin->get_name();
|
||
} elseif ( ! $is_using_cdn && $plugin->is_serving_webp() ) {
|
||
$checks[ $plugin->get_id() ] = $plugin->get_name();
|
||
}
|
||
}
|
||
|
||
return $checks;
|
||
}
|
||
|
||
/**
|
||
* Get a list of active plugins that convert and/or serve webp images.
|
||
*
|
||
* @since 3.4
|
||
* @access private
|
||
* @author Grégory Viguier
|
||
*
|
||
* @return array An array of Webp_Interface objects.
|
||
*/
|
||
private function get_webp_plugins() {
|
||
/**
|
||
* Add Webp plugins.
|
||
*
|
||
* @since 3.4
|
||
* @author Grégory Viguier
|
||
*
|
||
* @param array $webp_plugins An array of Webp_Interface objects.
|
||
*/
|
||
$webp_plugins = (array) apply_filters( 'rocket_webp_plugins', [] );
|
||
|
||
if ( ! $webp_plugins ) {
|
||
// Somebody probably messed up.
|
||
return [];
|
||
}
|
||
|
||
foreach ( $webp_plugins as $i => $plugin ) {
|
||
if ( ! is_a( $plugin, '\WP_Rocket\Subscriber\Third_Party\Plugins\Images\Webp\Webp_Interface' ) ) {
|
||
unset( $webp_plugins[ $i ] );
|
||
continue;
|
||
}
|
||
if ( ! $this->is_plugin_active( $plugin->get_basename() ) ) {
|
||
unset( $webp_plugins[ $i ] );
|
||
continue;
|
||
}
|
||
}
|
||
|
||
return $webp_plugins;
|
||
}
|
||
|
||
/**
|
||
* Tell if a plugin is active.
|
||
*
|
||
* @since 3.4
|
||
* @access public
|
||
* @see \plugin_basename()
|
||
* @author Grégory Viguier
|
||
*
|
||
* @param string $plugin_basename A plugin basename.
|
||
* @return bool
|
||
*/
|
||
private function is_plugin_active( $plugin_basename ) {
|
||
if ( \doing_action( 'deactivate_' . $plugin_basename ) ) {
|
||
return false;
|
||
}
|
||
|
||
if ( \doing_action( 'activate_' . $plugin_basename ) ) {
|
||
return true;
|
||
}
|
||
|
||
return \rocket_is_plugin_active( $plugin_basename );
|
||
}
|
||
|
||
/**
|
||
* Tell if WP Rocket uses a CDN for images.
|
||
*
|
||
* @since 3.4
|
||
* @access private
|
||
* @author Grégory Viguier
|
||
*
|
||
* @return bool
|
||
*/
|
||
private function is_using_cdn() {
|
||
// Don't use `$this->options_data->get( 'cdn' )` here, we need an up-to-date value when the CDN option changes.
|
||
$use = get_rocket_option( 'cdn' ) && $this->cdn_subscriber->get_cdn_hosts( [], [ 'all', 'images' ] );
|
||
/**
|
||
* Filter whether WP Rocket is using a CDN for webp images.
|
||
*
|
||
* @since 3.4
|
||
* @author Grégory Viguier
|
||
*
|
||
* @param bool $use True if WP Rocket is using a CDN for webp images. False otherwise.
|
||
*/
|
||
return (bool) apply_filters( 'rocket_webp_is_using_cdn', $use );
|
||
}
|
||
}
|