File lass/smarty/internals/core.write_cache

 1: <?php
 2: /**
 3:  * Smarty plugin
 4:  * @package Smarty
 5:  * @subpackage plugins
 6:  */
 7: 
 8: /**
 9:  * Prepend the cache information to the cache file
10:  * and write it
11:  *
12:  * @param string $tpl_file
13:  * @param string $cache_id
14:  * @param string $compile_id
15:  * @param string $results
16:  * @return true|null
17:  */
18: 
19:  // $tpl_file, $cache_id, $compile_id, $results
20: 
21: function smarty_core_write_cache_file($params, &$smarty)
22: {
23: 
24:     // put timestamp in cache header
25:     $smarty->_cache_info['timestamp'] = time();
26:     if ($smarty->cache_lifetime > -1){
27:         // expiration set
28:         $smarty->_cache_info['expires'] = $smarty->_cache_info['timestamp'] + $smarty->cache_lifetime;
29:     } else {
30:         // cache will never expire
31:         $smarty->_cache_info['expires'] = -1;
32:     }
33: 
34:     // collapse nocache.../nocache-tags
35:     if (preg_match_all('!\{(/?)nocache\:[0-9a-f]{32}#\d+\}!', $params['results'], $match, PREG_PATTERN_ORDER)) {
36:         // remove everything between every pair of outermost noache.../nocache-tags
37:         // and replace it by a single nocache-tag
38:         // this new nocache-tag will be replaced by dynamic contents in
39:         // smarty_core_process_compiled_includes() on a cache-read
40:         
41:         $match_count = count($match[0]);
42:         $results = preg_split('!(\{/?nocache\:[0-9a-f]{32}#\d+\})!', $params['results'], -1, PREG_SPLIT_DELIM_CAPTURE);
43:         
44:         $level = 0;
45:         $j = 0;
46:         for ($i=0, $results_count = count($results); $i < $results_count && $j < $match_count; $i++) {
47:             if ($results[$i] == $match[0][$j]) {
48:                 // nocache tag
49:                 if ($match[1][$j]) { // closing tag
50:                     $level--;
51:                     unset($results[$i]);
52:                 } else { // opening tag
53:                     if ($level++ > 0) unset($results[$i]);
54:                 }
55:                 $j++;
56:             } elseif ($level > 0) {
57:                 unset($results[$i]);
58:             }
59:         }
60:         $params['results'] = implode('', $results);
61:     }
62:     $smarty->_cache_info['cache_serials'] = $smarty->_cache_serials;
63: 
64:     // prepend the cache header info into cache file
65:     $_cache_info = serialize($smarty->_cache_info);
66:     $params['results'] = strlen($_cache_info) . "\n" . $_cache_info . $params['results'];
67: 
68:     if (!empty($smarty->cache_handler_func)) {
69:         // use cache_handler function
70:         call_user_func_array($smarty->cache_handler_func,
71:                              array('write', &$smarty, &$params['results'], $params['tpl_file'], $params['cache_id'], $params['compile_id'], $smarty->_cache_info['expires']));
72:     } else {
73:         // use local cache file
74: 
75:         if(!@is_writable($smarty->cache_dir)) {
76:             // cache_dir not writable, see if it exists
77:             if(!@is_dir($smarty->cache_dir)) {
78:                 $smarty->trigger_error('the $cache_dir \'' . $smarty->cache_dir . '\' does not exist, or is not a directory.', E_USER_ERROR);
79:                 return false;
80:             }
81:             $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);
82:             return false;
83:         }
84: 
85:         $_auto_id = $smarty->_get_auto_id($params['cache_id'], $params['compile_id']);
86:         $_cache_file = $smarty->_get_auto_filename($smarty->cache_dir, $params['tpl_file'], $_auto_id);
87:         $_params = array('filename' => $_cache_file, 'contents' => $params['results'], 'create_dirs' => true);
88:         require_once(SMARTY_CORE_DIR . 'core.write_file.php');
89:         smarty_core_write_file($_params, $smarty);
90:         return true;
91:     }
92: }
93: 
94: /* vim: set expandtab: */
95: 
96: ?>
97:
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