<?php

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defined('ABSPATH') || exit;

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if (!class_exists('TFCache',false)) {

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if (!class_exists('Themify_Filesystem',false) && defined('TF_CACHE_FW')) {

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require_once dirname(TF_CACHE_FW) . '/class-themify-filesystem.php';

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}

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/**

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* Class to work with post cache

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*

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* @package default

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*/

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class TFCache {

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const SEP = DIRECTORY_SEPARATOR;

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private static $cache_dir = null;

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public static $stopCache = false;

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private static $error = false;

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/**

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* Start Caching

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*

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* @param string $tag

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* @param integer $post_id

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* @param array $args

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* @param integer $time

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*

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* return boolean

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*/

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public static function start_cache($tag, $post_id = false, array $args = array(), $time = false) {//backward compatibility for addons

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return true;

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}

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public static function end_cache() {//backward compatibility for addons

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}

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/**

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* remove cache after some updates

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*/

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public static function remove_cache($item_id = 'blog', $type = false, $blog_id = false) {

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static $queue = array();

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if (isset($queue['all'])) {

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return true;

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}

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if ($item_id === 'all') {

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$queue['all'] = true;

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$dir = self::get_cache_main_dir();

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if (!Themify_Filesystem::is_dir($dir)) {

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return true;

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}

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return Themify_Filesystem::delete($dir);

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}

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$cache_dir = self::get_cache_blog_dir($blog_id);

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if (!isset($queue['blog']) && Themify_Filesystem::is_dir($cache_dir)) {

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if ($item_id === 'blog') {

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$queue['blog'] = true;

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return Themify_Filesystem::delete($cache_dir);

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} else {

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if ($type === false) {

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$the_post = wp_is_post_revision($item_id);

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if ($the_post) {

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$item_id = $the_post;

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}

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$post = get_post($item_id);

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if (empty($post)) {

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return true;

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}

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$type = $post->post_type;

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$post = null;

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}

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if (empty($type)) {

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return self::remove_cache();

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}

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$k = $type . $item_id;

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if (!isset($queue[$k])) {

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$queue[$k] = true;

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$find = array(' post-' . $item_id);

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$item_id = (int) $item_id;

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$find[] = get_post_type($item_id) === 'page' ? ' page-id-' . $item_id : ' postid-' . $item_id; //if there is any html associated with updated post

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if ($type === 'comment' || $type === 'term' || $type === 'category') {

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$find[] = $type . '-' . $item_id;

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if ($type !== 'comment') {

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$find[] = $type === 'category' ? get_category_link($item_id) : get_term_link($item_id);

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$temp = get_term($item_id);

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$find[] = 'term-' . $temp->slug;

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$temp = null;

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}

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}

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@set_time_limit(0);

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$type = $item_id = null;

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if (!self::clear_recursive($cache_dir, $find)) {

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return self::remove_cache();

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}

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}

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}

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}

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return true;

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}

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private static function clear_recursive($cache_dir, array $find) {

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$dirHandle = opendir($cache_dir);

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if (empty($dirHandle)) {

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return false;

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}

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while ($f = readdir($dirHandle)) {

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if ($f !== '.' && $f !== '..') {

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$item = rtrim($cache_dir, self::SEP) . self::SEP . $f;

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if (Themify_Filesystem::is_dir($item)) {

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self::clear_recursive($item, $find);

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} elseif (strpos($item, '.html', 5) !== false && strpos($item, '.html.gz', 5) === false && Themify_Filesystem::is_file($item)) {

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$content = file_get_contents($item, FALSE, NULL, 2000);

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if (!empty($content)) {

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foreach ($find as $v) {

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if (strpos($content, $v, 10) !== false) {

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Themify_Filesystem::delete($item, 'f');

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Themify_Filesystem::delete($item . '.gz', 'f');

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break;

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}

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}

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}

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$content = null;

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}

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}

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}

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closedir($dirHandle);

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$dirHandle = null;

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return true;

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}

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/**

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* init hooks to update cache

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*/

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public static function hooks() {

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add_action('save_post', array(__CLASS__, 'save'), 100, 3);

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add_action('deleted_post', array(__CLASS__, 'save'), 100, 1);

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add_action('comment_post', array(__CLASS__, 'comment_update'), 100, 2);

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add_action('deleted_comment', array(__CLASS__, 'comment_update'), 100, 2);

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add_action('wp_update_nav_menu', array(__CLASS__, 'menu_update'), 100);

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add_action('wp_update_nav_menu_item', array(__CLASS__, 'menu_update'), 100);

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add_action('activated_plugin', array(__CLASS__, 'plugin_active_deactive'), 100, 2);

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add_action('deactivated_plugin', array(__CLASS__, 'plugin_active_deactive'), 100, 2);

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add_action('admin_footer', array(__CLASS__, 'admin_check'));

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add_action('wp_ajax_themify_write_config', array(__CLASS__, 'ajax_write_wp_cache'));

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add_action('customize_save_after', array(__CLASS__, 'customizer'));

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add_action('switch_theme', array(__CLASS__, 'disable_cache'), 5);

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add_action('edit_term', array(__CLASS__, 'edit_term'), 100, 3);

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add_action('delete_term_taxonomy', array(__CLASS__, 'edit_term'), 100, 1);

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add_action('check_ajax_referer', array(__CLASS__, 'widget_update'), 100, 2); //for widgets order,there is no hook

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$metas = array('post', 'comment', 'term', 'user');

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foreach ($metas as $m) {

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if ($m !== 'term' && $m !== 'user') {

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add_action('added_' . $m . '_meta', array(__CLASS__, 'meta_update'), 100, 4);

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}

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add_action('updated_' . $m . '_meta', array(__CLASS__, 'meta_update'), 100, 4);

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add_action('deleted_' . $m . '_meta', array(__CLASS__, 'meta_update'), 100, 4);

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}

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if (is_user_logged_in()) {

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add_action('admin_bar_menu', array(__CLASS__, 'cache_menu'), 100);

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if (isset($_GET['tf-cache']) && ($_GET['tf-cache'] === '2' || $_GET['tf-cache'] === '4')) {

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add_action('init', array(__CLASS__, 'check_clear'), 1);

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}

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}

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add_action('upgrader_process_complete', array(__CLASS__, 'themify_updated'), 10, 2);

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}

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/**

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* comment update

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*/

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public static function comment_update($comment_ID, $comment_approved) {

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$comment = get_comment($comment_ID);

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if (!empty($comment)) {

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self::remove_cache($comment->comment_post_ID, 'comment');

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}

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}

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/**

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* plugin activatiion/deactivation

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*/

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public static function plugin_active_deactive($plugin, $network_wide) {

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$type = $network_wide ? 'all' : 'blog';

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self::remove_cache($type);

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}

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/**

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* menu update

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*/

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public static function menu_update($_menu_id) {

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themify_clear_menu_cache();

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remove_action('wp_update_nav_menu', array(__CLASS__, 'menu_update'), 100);

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remove_action('wp_update_nav_menu_item', array(__CLASS__, 'menu_update'), 100);

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self::remove_cache();

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}

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public static function customizer($manager) {

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if (!empty($manager)) {

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$post_id = $manager->changeset_post_id();

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if (!empty($post_id)) {

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self::remove_cache($post_id);

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}

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}

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}

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public static function edit_term($term, $tt_id = null, $taxonomy = null) {

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if (empty($taxonomy)) {

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$temp = get_term($term);

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$taxonomy = $temp->taxonomy;

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$temp = null;

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}

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$type = $taxonomy === 'category' ? 'category' : 'term';

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self::remove_cache($term, $type);

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}

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/**

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* meta update

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*/

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public static function meta_update($meta_id, $post_id, $meta_key, $meta_value) {

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if (!empty($post_id)) {

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$actions = explode('_', current_action());

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self::remove_cache($post_id, $actions[1]);

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}

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}

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public static function widget_update($action, $result) {

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if ($result !== false && $action === 'save-sidebar-widgets') {

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self::remove_cache();

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}

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}

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public static function save($post_id, $post = false, $update = true) {

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if ($update || current_action() === 'deleted_post') {

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self::remove_cache($post_id);

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} elseif (!is_object($post) || $post->post_status !== 'auto-draft') {

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self::remove_cache();

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}

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}

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public static function get_current_url():string {

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if (empty($_SERVER['REQUEST_URI']) || empty($_SERVER['HTTP_HOST'])) {

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return '';

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}

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$protocol = is_ssl() ? 'https://' : 'http://';

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return $protocol . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'];

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}

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/**

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* will be called in advanced-cache.php before wp full core load,a lot of functions from wp api and FW functions are't available in in this function be carefull!

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*/

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public static function run() {

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if (self::$stopCache === true) {

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return;

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}

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if (!function_exists('wp_get_nocache_headers')) {

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add_action('init', array(__CLASS__, 'run'), 0);

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return;

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}

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self::$cache_dir = self::get_cache_main_dir();

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if (Themify_Filesystem::mkdir(self::$cache_dir)) {

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$isMulti = is_multisite();

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if ($isMulti !== false) {

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self::$cache_dir = self::get_cache_blog_dir();

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}

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if ($isMulti === false || Themify_Filesystem::mkdir(self::$cache_dir, true)) {

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if (defined('TF_CACHE_RULES') && TF_CACHE_RULES) {

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$ignore = explode('|TF|', TF_CACHE_RULES);

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if (!empty($ignore) && !empty($_SERVER['HTTP_HOST'])) {

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$request = $_SERVER['REQUEST_URI'];

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$server = is_ssl() ? 'https://' : 'http://';

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$server .= $_SERVER['HTTP_HOST'];

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$del = '~';

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foreach ($ignore as $r) {

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$r = str_replace($server, '', $r);

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$p = $del . $r . $del;

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if (preg_match($p, $request)) {

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self::$cache_dir = null;

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return;

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}

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}

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$request = $server = $ignore = null;

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}

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}

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$dir = null;

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self::$cache_dir = self::get_current_cache('', true).'.html';

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if (Themify_Filesystem::is_file(self::$cache_dir)) {

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$ftime = filemtime(self::$cache_dir);

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$expire = defined('TF_CACHE_TIME') && TF_CACHE_TIME ? (TF_CACHE_TIME * 60) : WEEK_IN_SECONDS;

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$liveTime = $expire + $ftime;

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if ($liveTime > time()) {

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global $wp;

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$headers = apply_filters('wp_headers', wp_get_nocache_headers(), $wp);

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if (!isset($headers['Cache-Control'])) {

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$headers['Content-Type'] = 'no-cache, must-revalidate, max-age=0';

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}

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if (!isset($headers['Content-Type'])) {

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$headers['Content-Type'] = 'text/html;charset=UTF-8';

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}

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// header('Content-Length: '.filesize(self::$cache_dir));//temprorary disable,because when cd of cloudfare is enabled it will return compress brottil size

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$headers['Last-Modified'] = gmdate('D, d M Y H:i:s', $ftime) . ' GMT';

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$headers['Expires'] = gmdate('D, d M Y H:i:s', $liveTime) . 'GMT';

[304] Fix | Delete

if (Themify_Filesystem::is_file(self::$cache_dir)) {//maybe another proccess has already removed it?

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$type = false; //self::get_available_gzip();temprorary disable gzip caching,because bug of cloudfare

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if ($type !== false && Themify_Filesystem::is_file(self::$cache_dir . '.gz')) {

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$type = key($type);

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if (isset($_SERVER['HTTP_ACCEPT_ENCODING']) && strpos($_SERVER['HTTP_ACCEPT_ENCODING'], $type) !== false) {

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self::$cache_dir .= '.gz';

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$headers['Content-Encoding'] = $type;

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}

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}

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foreach ($headers as $name => $field_value) {

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header("{$name}: {$field_value}");

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}

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do_action_ref_array('send_headers', array(&$wp));

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readfile(self::$cache_dir);

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die;

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}

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} else {

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Themify_Filesystem::delete(self::$cache_dir, 'f');

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Themify_Filesystem::delete(self::$cache_dir . '.gz', 'f');

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}

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}

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add_action('template_redirect', array(__CLASS__, 'template_include'), -9999999);

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} else {

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self::$cache_dir = null;

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}

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} else {

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self::$cache_dir = null;

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}

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}

[333] Fix | Delete

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public static function get_current_cache(string $request = '',bool $create_dir = false):string {

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if ($request === '') {

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$request = self::get_current_url();

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}

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return self::get_cache_folder($request, $create_dir) . md5($request);

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}

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[341] Fix | Delete

/**

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* Initiate cache, just before page renders on frontend

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*

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* Hooked to "template_redirect"[0]

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*/

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public static function template_include() {

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if (!themify_is_dev_mode()) {

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self::cache_start();

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}

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}

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[352] Fix | Delete

private static function cache_start() {

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global $post;

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if (self::$stopCache === true || (isset($post, $post->post_password) && $post->post_password !== '') || is_user_logged_in() || is_admin() || self::$cache_dir === null || is_404() || is_search() || themify_is_ajax() || post_password_required() || is_trackback() || is_robots() || is_preview() || is_customize_preview() || themify_is_login_page() || (themify_is_woocommerce_active() && (is_checkout() || is_cart() || is_account_page()))) {

[355] Fix | Delete

return;

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}

[357] Fix | Delete

if (defined('TF_CACHE_IGNORE') && TF_CACHE_IGNORE) {

[358] Fix | Delete

$ignore = explode(',', trim(TF_CACHE_IGNORE));

[359] Fix | Delete

if (!empty($ignore)) {

[360] Fix | Delete

foreach ($ignore as $f) {

[361] Fix | Delete

if (($f === 'is_shop' && themify_is_shop()) || ($f !== 'is_shop' && is_callable($f) && call_user_func($f))) {

[362] Fix | Delete

return;

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}

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}

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}

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$ignore = null;

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}

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if (false !== self::get_cache_plugins()) {

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self::disable_cache();

[370] Fix | Delete

return;

[371] Fix | Delete

}

[372] Fix | Delete

define('TF_CACHE', true);

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self::$error = true;

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ob_start(array(__CLASS__, 'getBuffer'));

[375] Fix | Delete

add_action('wp_footer', array(__CLASS__, 'body_end'), 9999999);

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}

[377] Fix | Delete

[378] Fix | Delete

public static function getBuffer(?string $html=''):string {

[379] Fix | Delete

if (!$html) {

[380] Fix | Delete

$html = ob_get_contents();

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}

[382] Fix | Delete

if (self::$error === false && !empty($html)) {

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$html = preg_replace(array(

[384] Fix | Delete

'/<!--(.|\S)*?-->/s',

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'/\>[^\S ]{2,}/s', // remove whitespaces after tags

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'/[^\S ]{2,}\</s', // remove whitespaces before tags

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'/([\t ])+/s', //shorten multiple whitespace sequences; keep new-line characters because they matter in JS!!!

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'/\>[\r\n\t ]{2,}\</s', //remove empty lines (between HTML tags); cannot remove just any line-end characters because in inline JS they can matter!

[389] Fix | Delete

), array('', '>', '<', ' ', '><'), $html);

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if (self::$stopCache === false) {

[391] Fix | Delete

$dir = rtrim(dirname(self::$cache_dir), self::SEP) . self::SEP;

[392] Fix | Delete

if (Themify_Filesystem::mkdir($dir, true) && !is_file(self::$cache_dir)) {

[393] Fix | Delete

//tmp file need because file_put_contents isn't atomic(another process can read not ready file),locking file(LOCK_EX) is slow and not work always,that is why we are using rename(it is atomic)

[394] Fix | Delete

if (file_put_contents(self::$cache_dir . 'tmp', '<!--THEMIFY CACHE-->' . $html) && Themify_Filesystem::rename(self::$cache_dir . 'tmp', self::$cache_dir) !== false) {

[395] Fix | Delete

if (false && themify_get_server() !== 'litespeed' && themify_check('setting-cache_gzip', true)) {

[396] Fix | Delete

$func = self::get_available_gzip();

[397] Fix | Delete

if ($func !== false) {

[398] Fix | Delete

$func = current($func);

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$html = call_user_func($func['f'], $html, $func['l']);

[400] Fix | Delete

$func = null;

[401] Fix | Delete

if (!empty($html)) {

[402] Fix | Delete

file_put_contents(self::$cache_dir . '.gz', '<!--THEMIFY CACHE-->' . $html, LOCK_EX);

[403] Fix | Delete

}

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}

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}

[406] Fix | Delete

} else {

[407] Fix | Delete

Themify_Filesystem::delete(self::$cache_dir . 'tmp', 'f');

[408] Fix | Delete

}

[409] Fix | Delete

}

[410] Fix | Delete

}

[411] Fix | Delete

}

[412] Fix | Delete

return $html;

[413] Fix | Delete

}

[414] Fix | Delete

[415] Fix | Delete

public static function body_end():void {

[416] Fix | Delete

add_action('shutdown', array(__CLASS__, 'cache_end'), 0);

[417] Fix | Delete

}

[418] Fix | Delete

[419] Fix | Delete

public static function cache_end():void {

[420] Fix | Delete

self::$error = false;

[421] Fix | Delete

ob_end_flush();

[422] Fix | Delete

}

[423] Fix | Delete

[424] Fix | Delete

public static function get_available_gzip() {

[425] Fix | Delete

if (function_exists('brotli_compress') && ((isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] === 'on') || (isset($_SERVER['SERVER_PORT']) && (int) $_SERVER['SERVER_PORT'] === 443))) {

[426] Fix | Delete

return array('br' => array('f' => 'brotli_compress', 'l' => 10));

[427] Fix | Delete

}

[428] Fix | Delete

if (function_exists('gzdeflate')) {

[429] Fix | Delete

return array('deflate' => array('f' => 'gzdeflate', 'l' => 8));

[430] Fix | Delete

}

[431] Fix | Delete

if (function_exists('gzcompress')) {

[432] Fix | Delete

return array('deflate' => array('f' => 'gzcompress', 'l' => 8));

[433] Fix | Delete

}

[434] Fix | Delete

if (function_exists('gzencode')) {

[435] Fix | Delete

return array('gzip' => array('f' => 'gzencode', 'l' => 8));

[436] Fix | Delete

}

[437] Fix | Delete

return false;

[438] Fix | Delete

}

[439] Fix | Delete

[440] Fix | Delete

public static function create_config(array $data) {

[441] Fix | Delete

$cache_dir = self::get_wp_content_dir();

[442] Fix | Delete

if (Themify_Filesystem::is_writable($cache_dir)) {

[443] Fix | Delete

if (!empty($data['setting-cache-html']) && false === self::get_cache_plugins()) {

[444] Fix | Delete

$fw_dir = THEMIFY_DIR . self::SEP . 'cache' . self::SEP;

[445] Fix | Delete

$fw_config = $fw_dir . 'config.php';

[446] Fix | Delete

$cache_config = self::get_cache_config_file();

[447] Fix | Delete

$msg = sprintf(__('Can`t copy %s to %s. Please check permission or do manually it.', 'themify'), $fw_config, $cache_config);

[448] Fix | Delete

if (Themify_Filesystem::is_file($cache_config)) {

[449] Fix | Delete

include_once $cache_config;

[450] Fix | Delete

}

[451] Fix | Delete

$rules = '';

[452] Fix | Delete

if (!empty($data['setting-cache-rule'])) {

[453] Fix | Delete

$rules = explode(PHP_EOL, $data['setting-cache-rule']);

[454] Fix | Delete

foreach ($rules as $i => $r) {

[455] Fix | Delete

$rules[$i] = trim(str_replace(array('"', "'"), '', $r));

[456] Fix | Delete

if (empty($rules[$i])) {

[457] Fix | Delete

unset($rules[$i]);

[458] Fix | Delete

}

[459] Fix | Delete

}

[460] Fix | Delete

$rules = !empty($rules) ? implode('|TF|', $rules) : '';

[461] Fix | Delete

}

[462] Fix | Delete

$config = array(

[463] Fix | Delete

'#TF_CACHE_FW#' => trailingslashit($fw_dir),

[464] Fix | Delete

'#TF_CACHE_TIME#' => !empty($data['setting-cache-live']) ? ((int) $data['setting-cache-live']) : WEEK_IN_SECONDS,

[465] Fix | Delete

'#TF_CACHE_RULES#' => $rules,

[466] Fix | Delete

'#TF_CACHE_IGNORE#' => ''

[467] Fix | Delete

);

[468] Fix | Delete

$rules = null;

[469] Fix | Delete

$ignores = array();

[470] Fix | Delete

foreach ($data as $k => $v) {

[471] Fix | Delete

if (strpos($k, 'setting-cache-ignore_') === 0 && !empty($v)) {

[472] Fix | Delete

$ignores[] = $v;

[473] Fix | Delete

}

[474] Fix | Delete

}

[475] Fix | Delete

if (!empty($ignores)) {

[476] Fix | Delete

$config['#TF_CACHE_IGNORE#'] = implode(',', $ignores);

[477] Fix | Delete

}

[478] Fix | Delete

$ignores = $data = null;

[479] Fix | Delete

$hasUpdate = (!defined('TF_CACHE_FW') || TF_CACHE_FW !== $config['#TF_CACHE_FW#']) || (!defined('TF_CACHE_RULES') || $config['#TF_CACHE_RULES#'] !== TF_CACHE_RULES) || (!defined('TF_CACHE_IGNORE') || $config['#TF_CACHE_IGNORE#'] !== TF_CACHE_IGNORE) || (!defined('TF_CACHE_TIME') || $config['#TF_CACHE_TIME#'] != TF_CACHE_TIME);

[480] Fix | Delete

if ($hasUpdate === true) {

[481] Fix | Delete

if (!copy($fw_config, $cache_config)) {

[482] Fix | Delete

self::disable_cache();

[483] Fix | Delete

return $msg;

[484] Fix | Delete

}

[485] Fix | Delete

$content = Themify_Filesystem::get_contents($cache_config);

[486] Fix | Delete

if (empty($content)) {

[487] Fix | Delete

self::disable_cache();

[488] Fix | Delete

return $msg;

[489] Fix | Delete

}

[490] Fix | Delete

if (!file_put_contents($cache_config, str_replace(array_keys($config), $config, $content), LOCK_EX)) {

[491] Fix | Delete

self::disable_cache();

[492] Fix | Delete

return false;

[493] Fix | Delete

}

[494] Fix | Delete

$content = null;

[495] Fix | Delete

}

[496] Fix | Delete

$copy = true;

[497] Fix | Delete

if (Themify_Filesystem::is_file($cache_dir . 'advanced-cache.php')) {

[498] Fix | Delete

$content = Themify_Filesystem::get_contents($cache_dir . 'advanced-cache.php');

[499] Fix | Delete