9 * read a cache file, determine if it needs to be
12 * @param string $tpl_file
13 * @param string $cache_id
14 * @param string $compile_id
15 * @param string $results
19 // $tpl_file, $cache_id, $compile_id, &$results
21 function smarty_core_read_cache_file(&$params, &$smarty)
23 static $content_cache = array();
25 if ($smarty->force_compile
) {
26 // force compile enabled, always regenerate
30 if (isset($content_cache[$params['tpl_file'].','.$params['cache_id'].','.$params['compile_id']])) {
31 list($params['results'], $smarty->_cache_info
) = $content_cache[$params['tpl_file'].','.$params['cache_id'].','.$params['compile_id']];
35 if (!empty($smarty->cache_handler_func
)) {
36 // use cache_handler function
37 call_user_func_array($smarty->cache_handler_func
,
38 array('read', &$smarty, &$params['results'], $params['tpl_file'], $params['cache_id'], $params['compile_id'], null));
40 // use local cache file
41 $_auto_id = $smarty->_get_auto_id($params['cache_id'], $params['compile_id']);
42 $_cache_file = $smarty->_get_auto_filename($smarty->cache_dir
, $params['tpl_file'], $_auto_id);
43 $params['results'] = $smarty->_read_file($_cache_file);
46 if (empty($params['results'])) {
47 // nothing to parse (error?), regenerate cache
51 $_contents = $params['results'];
52 $_info_start = strpos($_contents, "\n") +
1;
53 $_info_len = (int)substr($_contents, 0, $_info_start - 1);
54 $_cache_info = unserialize(substr($_contents, $_info_start, $_info_len));
55 $params['results'] = substr($_contents, $_info_start +
$_info_len);
57 if ($smarty->caching
== 2 && isset ($_cache_info['expires'])){
58 // caching by expiration time
59 if ($_cache_info['expires'] > -1 && (time() > $_cache_info['expires'])) {
60 // cache expired, regenerate
64 // caching by lifetime
65 if ($smarty->cache_lifetime
> -1 && (time() - $_cache_info['timestamp'] > $smarty->cache_lifetime
)) {
66 // cache expired, regenerate
71 if ($smarty->compile_check
) {
72 $_params = array('get_source' => false, 'quiet'=>true);
73 foreach (array_keys($_cache_info['template']) as $_template_dep) {
74 $_params['resource_name'] = $_template_dep;
75 if (!$smarty->_fetch_resource_info($_params) ||
$_cache_info['timestamp'] < $_params['resource_timestamp']) {
76 // template file has changed, regenerate cache
81 if (isset($_cache_info['config'])) {
82 $_params = array('resource_base_path' => $smarty->config_dir
, 'get_source' => false, 'quiet'=>true);
83 foreach (array_keys($_cache_info['config']) as $_config_dep) {
84 $_params['resource_name'] = $_config_dep;
85 if (!$smarty->_fetch_resource_info($_params) ||
$_cache_info['timestamp'] < $_params['resource_timestamp']) {
86 // config file has changed, regenerate cache
93 $content_cache[$params['tpl_file'].','.$params['cache_id'].','.$params['compile_id']] = array($params['results'], $_cache_info);
95 $smarty->_cache_info
= $_cache_info;
99 /* vim: set expandtab: */
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