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wp-content/plugins/jetpack-boost/compatibility/wp-super-cache.php

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+<?php
+/**
+ * Super Cache compatibility for Boost
+ *
+ * @package automattic/jetpack-boost
+ */
+
+namespace Automattic\Jetpack_Boost\Compatibility\Super_Cache;
+
+/**
+ * Add WP Super Cache bypass query param to the URL.
+ *
+ * @param string $url The URL.
+ */
+function add_bypass_query_param( $url ) {
+	global $cache_page_secret;
+
+	return add_query_arg( 'donotcachepage', $cache_page_secret, $url );
+}
+
+/**
+ * Add WP Super Cache bypass query params to Critical CSS URLs.
+ *
+ * @param array $urls list of URLs to generate Critical CSS for.
+ */
+function critical_css_bypass_super_cache( $urls ) {
+	return array_map( __NAMESPACE__ . '\add_bypass_query_param', $urls );
+}
+add_filter( 'jetpack_boost_critical_css_urls', __NAMESPACE__ . '\critical_css_bypass_super_cache' );
+
+/**
+ * Clear Super Cache's cache. Called when Critical CSS finishes generating, or
+ * when a module is enabled or disabled.
+ */
+function clear_cache() {
+	global $wpdb;
+
+	if ( function_exists( 'wp_cache_clear_cache' ) ) {
+		wp_cache_clear_cache( $wpdb->blogid );
+	}
+
+	// Remove the action so it doesn't run again during the same request.
+	remove_action( 'jetpack_boost_page_output_changed', __NAMESPACE__ . '\clear_cache' );
+}
+add_action( 'jetpack_boost_page_output_changed', __NAMESPACE__ . '\clear_cache' );