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<?php
/**
* Elgg cache
* Cache file interface for caching data.
*
* @package Elgg.Core
* @subpackage Cache
*/
/**
* Returns an ElggCache object suitable for caching view
* file load paths to disk under $CONFIG->dataroot.
*
* @todo Can this be done in a cleaner way?
* @todo Swap to memcache etc?
*
* @return ElggFileCache A cache object suitable for caching file load paths.
*/
function elgg_get_filepath_cache() {
global $CONFIG;
/**
* A default filestore cache using the dataroot.
*/
static $FILE_PATH_CACHE;
if (!$FILE_PATH_CACHE) {
$FILE_PATH_CACHE = new ElggFileCache($CONFIG->dataroot);
}
return $FILE_PATH_CACHE;
}
/**
* Function which resets the file path cache.
*
*/
function elgg_filepath_cache_reset() {
$cache = elgg_get_filepath_cache();
$view_types_result = $cache->delete('view_types');
$views_result = $cache->delete('views');
return $view_types_result && $views_result;
}
/**
* Saves a filepath cache.
*
* @param string $type
* @param string $data
* @return bool
*/
function elgg_filepath_cache_save($type, $data) {
global $CONFIG;
if ($CONFIG->viewpath_cache_enabled) {
$cache = elgg_get_filepath_cache();
return $cache->save($type, $data);
}
return false;
}
/**
* Retrieve the contents of the filepath cache.
*
* @param string $type The type of cache to load
* @return string
*/
function elgg_filepath_cache_load($type) {
global $CONFIG;
if ($CONFIG->viewpath_cache_enabled) {
$cache = elgg_get_filepath_cache();
$cached_data = $cache->load($type);
if ($cached_data) {
return $cached_data;
}
}
return NULL;
}
/**
* Enables the views file paths disk cache.
*
* Uses the 'viewpath_cache_enabled' datalist with a boolean value.
* Resets the views paths cache.
*
* @return null
*/
function elgg_enable_filepath_cache() {
global $CONFIG;
datalist_set('viewpath_cache_enabled', 1);
$CONFIG->viewpath_cache_enabled = 1;
elgg_filepath_cache_reset();
}
/**
* Disables the views file paths disk cache.
*
* Uses the 'viewpath_cache_enabled' datalist with a boolean value.
* Resets the views paths cache.
*
* @return null
*/
function elgg_disable_filepath_cache() {
global $CONFIG;
datalist_set('viewpath_cache_enabled', 0);
$CONFIG->viewpath_cache_enabled = 0;
elgg_filepath_cache_reset();
}
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