core.read_cache_file.php
上传用户:xjjlds
上传日期:2015-12-05
资源大小:22823k
文件大小:4k
- <?php
- /**
- * Smarty plugin
- * @package Smarty
- * @subpackage plugins
- */
- /**
- * read a cache file, determine if it needs to be
- * regenerated or not
- *
- * @param string $tpl_file
- * @param string $cache_id
- * @param string $compile_id
- * @param string $results
- * @return boolean
- */
- // $tpl_file, $cache_id, $compile_id, &$results
- function smarty_core_read_cache_file(&$params, &$smarty)
- {
- static $content_cache = array();
- if ($smarty->force_compile) {
- // force compile enabled, always regenerate
- return false;
- }
- if (isset($content_cache[$params['tpl_file'].','.$params['cache_id'].','.$params['compile_id']])) {
- list($params['results'], $smarty->_cache_info) = $content_cache[$params['tpl_file'].','.$params['cache_id'].','.$params['compile_id']];
- return true;
- }
- if (!empty($smarty->cache_handler_func)) {
- // use cache_handler function
- call_user_func_array($smarty->cache_handler_func,
- array('read', &$smarty, &$params['results'], $params['tpl_file'], $params['cache_id'], $params['compile_id'], null));
- } else {
- // use local cache file
- $_auto_id = $smarty->_get_auto_id($params['cache_id'], $params['compile_id']);
- $_cache_file = $smarty->_get_auto_filename($smarty->cache_dir, $params['tpl_file'], $_auto_id);
- $params['results'] = $smarty->_read_file($_cache_file);
- }
- if (empty($params['results'])) {
- // nothing to parse (error?), regenerate cache
- return false;
- }
- $cache_split = explode("n", $params['results'], 2);
- $cache_header = $cache_split[0];
- $_cache_info = unserialize($cache_header);
- if ($smarty->caching == 2 && isset ($_cache_info['expires'])){
- // caching by expiration time
- if ($_cache_info['expires'] > -1 && (time() > $_cache_info['expires'])) {
- // cache expired, regenerate
- return false;
- }
- } else {
- // caching by lifetime
- if ($smarty->cache_lifetime > -1 && (time() - $_cache_info['timestamp'] > $smarty->cache_lifetime)) {
- // cache expired, regenerate
- return false;
- }
- }
- if ($smarty->compile_check) {
- $_params = array('get_source' => false, 'quiet'=>true);
- foreach (array_keys($_cache_info['template']) as $_template_dep) {
- $_params['resource_name'] = $_template_dep;
- if (!$smarty->_fetch_resource_info($_params) || $_cache_info['timestamp'] < $_params['resource_timestamp']) {
- // template file has changed, regenerate cache
- return false;
- }
- }
- if (isset($_cache_info['config'])) {
- $_params = array('resource_base_path' => $smarty->config_dir, 'get_source' => false, 'quiet'=>true);
- foreach (array_keys($_cache_info['config']) as $_config_dep) {
- $_params['resource_name'] = $_config_dep;
- if (!$smarty->_fetch_resource_info($_params) || $_cache_info['timestamp'] < $_params['resource_timestamp']) {
- // config file has changed, regenerate cache
- return false;
- }
- }
- }
- }
- foreach ($_cache_info['cache_serials'] as $_include_file_path=>$_cache_serial) {
- if (empty($smarty->_cache_serials[$_include_file_path])) {
- $smarty->_include($_include_file_path, true);
- }
- if ($smarty->_cache_serials[$_include_file_path] != $_cache_serial) {
- /* regenerate */
- return false;
- }
- }
- $params['results'] = $cache_split[1];
- $content_cache[$params['tpl_file'].','.$params['cache_id'].','.$params['compile_id']] = array($params['results'], $_cache_info);
- $smarty->_cache_info = $_cache_info;
- return true;
- }
- /* vim: set expandtab: */
- ?>