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<?php
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/**
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* Smarty cache resource file clear method
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*
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* @package Smarty
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* @subpackage PluginsInternal
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* @author Uwe Tews
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*/
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/**
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* Smarty Internal Runtime Cache Resource File Class
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*
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* @package Smarty
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* @subpackage PluginsInternal
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*/
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class Smarty_Internal_Runtime_CacheResourceFile
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{
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/**
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* Empty cache for a specific template
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*
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* @param Smarty $smarty
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* @param string $resource_name template name
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* @param string $cache_id cache id
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* @param string $compile_id compile id
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* @param integer $exp_time expiration time (number of seconds, not timestamp)
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*
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* @return integer number of cache files deleted
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*/
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public function clear(Smarty $smarty, $resource_name, $cache_id, $compile_id, $exp_time)
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{
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$_cache_id = isset($cache_id) ? preg_replace('![^\w\|]+!', '_', $cache_id) : null;
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$_compile_id = isset($compile_id) ? preg_replace('![^\w]+!', '_', $compile_id) : null;
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$_dir_sep = $smarty->use_sub_dirs ? '/' : '^';
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$_compile_id_offset = $smarty->use_sub_dirs ? 3 : 0;
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$_dir = $smarty->getCacheDir();
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if ($_dir === '/') { //We should never want to delete this!
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return 0;
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}
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$_dir_length = strlen($_dir);
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if (isset($_cache_id)) {
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$_cache_id_parts = explode('|', $_cache_id);
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$_cache_id_parts_count = count($_cache_id_parts);
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if ($smarty->use_sub_dirs) {
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foreach ($_cache_id_parts as $id_part) {
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$_dir .= $id_part . '/';
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}
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}
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}
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if (isset($resource_name)) {
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$_save_stat = $smarty->caching;
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$smarty->caching = Smarty::CACHING_LIFETIME_CURRENT;
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$tpl = new $smarty->template_class($resource_name, $smarty);
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$smarty->caching = $_save_stat;
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// remove from template cache
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$tpl->source; // have the template registered before unset()
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if ($tpl->source->exists) {
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$_resourcename_parts = basename(str_replace('^', '/', $tpl->cached->filepath));
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} else {
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return 0;
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}
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}
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$_count = 0;
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$_time = time();
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if (file_exists($_dir)) {
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$_cacheDirs = new RecursiveDirectoryIterator($_dir);
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$_cache = new RecursiveIteratorIterator($_cacheDirs, RecursiveIteratorIterator::CHILD_FIRST);
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foreach ($_cache as $_file) {
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if (substr(basename($_file->getPathname()), 0, 1) === '.') {
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continue;
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}
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$_filepath = (string)$_file;
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// directory ?
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if ($_file->isDir()) {
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if (!$_cache->isDot()) {
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// delete folder if empty
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@rmdir($_file->getPathname());
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}
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} else {
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// delete only php files
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if (substr($_filepath, -4) !== '.php') {
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continue;
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}
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$_parts = explode($_dir_sep, str_replace('\\', '/', substr($_filepath, $_dir_length)));
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$_parts_count = count($_parts);
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// check name
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if (isset($resource_name)) {
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if ($_parts[ $_parts_count - 1 ] !== $_resourcename_parts) {
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continue;
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}
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}
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// check compile id
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if (isset($_compile_id) && (!isset($_parts[ $_parts_count - 2 - $_compile_id_offset ])
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|| $_parts[ $_parts_count - 2 - $_compile_id_offset ] !== $_compile_id)
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) {
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continue;
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}
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// check cache id
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if (isset($_cache_id)) {
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// count of cache id parts
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$_parts_count = (isset($_compile_id)) ? $_parts_count - 2 - $_compile_id_offset :
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$_parts_count - 1 - $_compile_id_offset;
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if ($_parts_count < $_cache_id_parts_count) {
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continue;
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}
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for ($i = 0; $i < $_cache_id_parts_count; $i++) {
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if ($_parts[ $i ] !== $_cache_id_parts[ $i ]) {
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continue 2;
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}
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}
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}
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if (is_file($_filepath)) {
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// expired ?
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if (isset($exp_time)) {
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if ($exp_time < 0) {
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preg_match('#\'cache_lifetime\' =>\s*(\d*)#', file_get_contents($_filepath), $match);
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if ($_time < (filemtime($_filepath) + $match[ 1 ])) {
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continue;
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}
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} else {
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if ($_time - filemtime($_filepath) < $exp_time) {
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continue;
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}
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}
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}
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$_count += @unlink($_filepath) ? 1 : 0;
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if (function_exists('opcache_invalidate')
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&& (!function_exists('ini_get') || strlen(ini_get("opcache.restrict_api")) < 1)
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) {
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opcache_invalidate($_filepath, true);
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} elseif (function_exists('apc_delete_file')) {
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apc_delete_file($_filepath);
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}
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}
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}
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}
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}
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return $_count;
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}
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}
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