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  • Committer: Bazaar Package Importer
  • Author(s): Dimitri Fontaine
  • Date: 2005-03-29 11:53:20 UTC
  • mfrom: (0.1.1 upstream)
  • Revision ID: james.westby@ubuntu.com-20050329115320-g3rvndgnn75ogm35
Tags: 2.6.8-1
New upstream release

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