add wp-rocket

wp-content/plugins/wp-rocket/inc/Engine/Optimization/GoogleFonts/Subscriber.php

@@ -0,0 +1,106 @@
+<?php
+namespace WP_Rocket\Engine\Optimization\GoogleFonts;
+
+use WP_Rocket\Admin\Options_Data;
+use WP_Rocket\Event_Management\Subscriber_Interface;
+
+/**
+ * Combine Google Fonts subscriber
+ *
+ * @since 3.1
+ */
+class Subscriber implements Subscriber_Interface {
+	/**
+	 * Plugin options.
+	 *
+	 * @var Options_Data
+	 */
+	private $options;
+
+	/**
+	 * Combine instance.
+	 *
+	 * @var Combine
+	 */
+	private $combine;
+
+	/**
+	 * Instantiate the subscirber
+	 *
+	 * @param Combine      $combine Combine instance.
+	 * @param Options_Data $options Options_Data instance.
+	 */
+	public function __construct( Combine $combine, Options_Data $options ) {
+		$this->combine = $combine;
+		$this->options = $options;
+	}
+
+	/**
+	 * Return an array of events that this subscriber wants to listen to.
+	 *
+	 * @since  3.1
+	 *
+	 * @return array
+	 */
+	public static function get_subscribed_events() {
+		return [
+			'wp_resource_hints' => [ 'preconnect', 10, 2 ],
+			'rocket_buffer'     => [ 'process', 18 ],
+		];
+	}
+
+	/**
+	 * Adds google fonts URL to preconnect
+	 *
+	 * @since 3.5.3
+	 *
+	 * @param array  $urls          URLs to print for resource hints.
+	 * @param string $relation_type The relation type the URLs are printed for, e.g. 'preconnect' or 'prerender'.
+	 * @return array
+	 */
+	public function preconnect( array $urls, $relation_type ) {
+		if ( ! $this->is_allowed() ) {
+			return $urls;
+		}
+
+		if ( 'preconnect' !== $relation_type ) {
+			return $urls;
+		}
+
+		$urls[] = [
+			'href' => 'https://fonts.gstatic.com',
+			1      => 'crossorigin',
+		];
+
+		return $urls;
+	}
+
+	/**
+	 * Processes the HTML to combine found Google fonts
+	 *
+	 * @since 3.1
+	 *
+	 * @param string $html HTML content.
+	 * @return string
+	 */
+	public function process( $html ) {
+		if ( ! $this->is_allowed() ) {
+			return $html;
+		}
+
+		return $this->combine->optimize( $html );
+	}
+
+	/**
+	 * Checks if files can combine found Google fonts.
+	 *
+	 * @since 3.1
+	 */
+	protected function is_allowed() {
+		if ( rocket_bypass() ) {
+			return false;
+		}
+
+		return (bool) $this->options->get( 'minify_google_fonts', 0 );
+	}
+}