<?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, $compile_id, &$resultsfunction 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;    }    $_contents = $params['results'];    $_info_start = strpos($_contents, "\n") + 1;    $_info_len = (int)substr($_contents, 0, $_info_start - 1);    $_cache_info = unserialize(substr($_contents, $_info_start, $_info_len));    $params['results'] = substr($_contents, $_info_start + $_info_len);    if ($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;                }            }        }    }    $content_cache[$params['tpl_file'].','.$params['cache_id'].','.$params['compile_id']] = array($params['results'], $_cache_info);    $smarty->_cache_info = $_cache_info;    return true;}/* vim: set expandtab: */?>