wp-optimize / cache / class-wpo-cache-rules.php

class-wpo-cache-rules.php in WP-Optimize – Cache, Compress images, Minify & Clean database to boost page speed & performance 2.2.11, at cache/class-wpo-cache-rules.php

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1	<?php
2
3	if (!defined('ABSPATH')) die('No direct access allowed');
4
5	/**
6	* Page caching rules and exceptions
7	*/
8
9	if (!class_exists('WPO_Cache_Config')) require_once('class-wpo-cache-config.php');
10
11	if (!class_exists('WPO_Cache_Rules')) :
12
13	class WPO_Cache_Rules {
14
15	/**
16	* Cache config object
17	*
18	* @var mixed
19	*/
20	public $config;
21
22	/**
23	* Instance of this class
24	*
25	* @var mixed
26	*/
27	public static $instance;
28
29	/**
30	* Class constructor
31	*/
32	public function __construct() {
33	$this->config = WPO_Cache_Config::instance()->get();
34	$this->setup_hooks();
35	}
36
37	/**
38	* Setup hooks/filters
39	*/
40	public function setup_hooks() {
41	add_action('pre_post_update', array($this, 'purge_post_on_update'), 10, 1);
42	add_action('save_post', array($this, 'purge_post_on_update'), 10, 1);
43	add_action('wp_trash_post', array($this, 'purge_post_on_update'), 10, 1);
44	add_action('wp_set_comment_status', array($this, 'purge_post_on_comment_status_change'), 10);
45	add_action('set_comment_cookies', array($this, 'set_comment_cookie_exceptions'), 10);
46	}
47
48	/**
49	* When user posts a comment, set a cookie so we don't show them page cache
50	*
51	* @param WP_Comment $comment Comment to check.
52	*/
53	public function set_comment_cookie_exceptions($comment) {
54
55	if (empty($this->config['enable_page_caching'])) return;
56
57	$path = $this->get_post_path($comment->comment_post_ID);
58
59	$this->purge_from_cache($path);
60	}
61
62	/**
63	* Purge files for a particular path from the cache
64	*
65	* @param String $path - the path
66	*/
67	public function purge_from_cache($path) {
68	WPO_Page_Cache::delete(untrailingslashit($path) . '/index.html');
69	WPO_Page_Cache::delete(untrailingslashit($path) . '/index.gzip.html');
70
71	if (!empty($this->config['enable_mobile_caching'])) {
72	WPO_Page_Cache::delete(untrailingslashit($path) . '/mobile.index.html');
73	WPO_Page_Cache::delete(untrailingslashit($path) . '/mobile.index.gzip.html');
74	}
75	}
76
77
78	/**
79	* Get the cache path for a given post
80	*
81	* @param Integer $post_id - WP post ID
82	*
83	* @return String
84	*/
85	private function get_post_path($post_id) {
86	return WPO_CACHE_DIR . preg_replace('#^https?://#i', '', get_permalink($post_id));
87	}
88
89	/**
90	* Every time a comment's status changes, purge it's parent posts cache
91	*
92	* @param Integer $comment_id Comment ID.
93	*/
94	public function purge_post_on_comment_status_change($comment_id) {
95
96	if (empty($this->config['enable_page_caching'])) return;
97
98	$comment = get_comment($comment_id);
99
100	$path = $this->get_post_path($comment->comment_post_ID);
101
102	$this->purge_from_cache($path);
103
104	}
105
106	/**
107	* Automatically purge all file based page cache on post changes
108	* We want the whole cache purged here as different parts
109	* of the site could potentially change on post updates
110	*
111	* @param Integer $post_id WordPress post id
112	*/
113	public function purge_post_on_update($post_id) {
114	$post_type = get_post_type($post_id);
115
116	if ((defined('DOING_AUTOSAVE') && DOING_AUTOSAVE) \|\| 'revision' === $post_type) {
117	return;
118	} elseif (!current_user_can('edit_post', $post_id) && (!defined('DOING_CRON') \|\| !DOING_CRON)) {
119	return;
120	}
121
122	if (!empty($this->config['enable_page_caching'])) {
123	wpo_cache_flush();
124	}
125	}
126
127	/**
128	* Returns an instance of the current class, creates one if it doesn't exist
129	*
130	* @return WPO_Cache_Rules
131	*/
132	public static function instance() {
133	if (empty(self::$instance)) {
134	self::$instance = new self();
135	}
136	return self::$instance;
137	}
138	}
139
140	endif;
141