95 lines
2.2 KiB
PHP
95 lines
2.2 KiB
PHP
<?php
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require_once 'HTMLPurifier/DefinitionCache.php';
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/**
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* Cache handler that stores all data in drupals builtin cache
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*/
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class HTMLPurifier_DefinitionCache_Drupal extends HTMLPurifier_DefinitionCache
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{
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/**
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* Add an object to the cache without overwriting
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*/
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function add($def, $config) {
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if (!$this->checkDefType($def)) return;
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$key = $this->generateKey($config);
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if ($this->fetchFromDrupalCache($key)) {
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// already cached
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return false;
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}
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$this->storeInDrupalCache($def, $key);
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return true;
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}
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/**
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* Unconditionally add an object to the cache, overwrites any existing object.
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*/
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function set($def, $config) {
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if (!$this->checkDefType($def)) return;
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$key = $this->generateKey($config);
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$this->storeInDrupalCache($def, $key);
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return true;
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}
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/**
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* Replace an object that already exists in the cache.
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*/
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function replace($def, $config) {
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if (!$this->checkDefType($def)) return;
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$key = $this->generateKey($config);
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if (!$this->fetchFromDrupalCache($key)) {
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// object does not exist in cache
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return false;
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}
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$this->storeInDrupalCache($def, $key);
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return true;
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}
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/**
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* Retrieve an object from the cache
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*/
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function get($config) {
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$key = $this->generateKey($config);
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return $this->fetchFromDrupalCache($key);
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}
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/**
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* Delete an object from the cache
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*/
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function remove($config) {
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$key = $this->generateKey($config);
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cache_clear_all("htmlpurifier:$key", 'cache');
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return true;
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}
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function flush($config) {
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cache_clear_all("htmlpurifier:*", 'cache', true);
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return true;
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}
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function cleanup($config) {
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$res = db_query("SELECT cid FROM {cache} WHERE cid LIKE '%s%%'", 'htmlpurifier:');
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while ($row = db_fetch_object($res)) {
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$key = substr($row->cid, 13); // 13 == strlen('htmlpurifier:')
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if ($this->isOld($key, $config)) {
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cache_clear_all($row->cid, 'cache');
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}
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}
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}
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function fetchFromDrupalCache($key) {
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$cached = cache_get("htmlpurifier:$key");
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if ($cached) return unserialize($cached->data);
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return false;
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}
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function storeInDrupalCache($def, $key) {
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cache_set("htmlpurifier:$key", serialize($def), 'cache', CACHE_PERMANENT);
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}
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}
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