smarty/internals/core.write_cache_file.php
author Dan
Tue, 05 Aug 2008 13:17:57 -0400
changeset 27 20a36fe254c9
parent 0 c63de9eb7045
permissions -rw-r--r--
Merging artwork (nighthawk) + keepalive (scribus) branches
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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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 * Prepend the cache information to the cache file
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 * and write it
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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 true|null
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 */
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 // $tpl_file, $cache_id, $compile_id, $results
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function smarty_core_write_cache_file($params, &$smarty)
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{
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    // put timestamp in cache header
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    $smarty->_cache_info['timestamp'] = time();
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    if ($smarty->cache_lifetime > -1){
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        // expiration set
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        $smarty->_cache_info['expires'] = $smarty->_cache_info['timestamp'] + $smarty->cache_lifetime;
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    } else {
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        // cache will never expire
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        $smarty->_cache_info['expires'] = -1;
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    }
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    // collapse nocache.../nocache-tags
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    if (preg_match_all('!\{(/?)nocache\:[0-9a-f]{32}#\d+\}!', $params['results'], $match, PREG_PATTERN_ORDER)) {
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        // remove everything between every pair of outermost noache.../nocache-tags
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        // and replace it by a single nocache-tag
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        // this new nocache-tag will be replaced by dynamic contents in
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        // smarty_core_process_compiled_includes() on a cache-read
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        $match_count = count($match[0]);
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        $results = preg_split('!(\{/?nocache\:[0-9a-f]{32}#\d+\})!', $params['results'], -1, PREG_SPLIT_DELIM_CAPTURE);
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        $level = 0;
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        $j = 0;
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        for ($i=0, $results_count = count($results); $i < $results_count && $j < $match_count; $i++) {
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            if ($results[$i] == $match[0][$j]) {
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                // nocache tag
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                if ($match[1][$j]) { // closing tag
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                    $level--;
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                    unset($results[$i]);
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                } else { // opening tag
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                    if ($level++ > 0) unset($results[$i]);
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                }
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                $j++;
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            } elseif ($level > 0) {
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                unset($results[$i]);
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            }
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        }
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        $params['results'] = implode('', $results);
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    }
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    $smarty->_cache_info['cache_serials'] = $smarty->_cache_serials;
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    // prepend the cache header info into cache file
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    $_cache_info = serialize($smarty->_cache_info);
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    $params['results'] = strlen($_cache_info) . "\n" . $_cache_info . $params['results'];
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    if (!empty($smarty->cache_handler_func)) {
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        // use cache_handler function
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        call_user_func_array($smarty->cache_handler_func,
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                             array('write', &$smarty, &$params['results'], $params['tpl_file'], $params['cache_id'], $params['compile_id'], null));
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    } else {
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        // use local cache file
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        if(!@is_writable($smarty->cache_dir)) {
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            // cache_dir not writable, see if it exists
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            if(!@is_dir($smarty->cache_dir)) {
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                $smarty->trigger_error('the $cache_dir \'' . $smarty->cache_dir . '\' does not exist, or is not a directory.', E_USER_ERROR);
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                return false;
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            }
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            $smarty->trigger_error('unable to write to $cache_dir \'' . realpath($smarty->cache_dir) . '\'. Be sure $cache_dir is writable by the web server user.', E_USER_ERROR);
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            return false;
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        }
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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 = array('filename' => $_cache_file, 'contents' => $params['results'], 'create_dirs' => true);
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        require_once(SMARTY_CORE_DIR . 'core.write_file.php');
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        smarty_core_write_file($_params, $smarty);
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        return true;
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    }
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}
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/* vim: set expandtab: */
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?>