51ff3226 |
1 | <?php |
2 | /** |
3 | * Smarty plugin |
4 | * @package Smarty |
5 | * @subpackage plugins |
6 | */ |
7 | |
8 | /** |
9 | * read a cache file, determine if it needs to be |
10 | * regenerated or not |
11 | * |
12 | * @param string $tpl_file |
13 | * @param string $cache_id |
14 | * @param string $compile_id |
15 | * @param string $results |
16 | * @return boolean |
17 | */ |
18 | |
19 | // $tpl_file, $cache_id, $compile_id, &$results |
20 | |
21 | function smarty_core_read_cache_file(&$params, &$smarty) |
22 | { |
23 | static $content_cache = array(); |
24 | |
25 | if ($smarty->force_compile) { |
26 | // force compile enabled, always regenerate |
27 | return false; |
28 | } |
29 | |
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']]; |
32 | return true; |
33 | } |
34 | |
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)); |
39 | } else { |
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); |
44 | } |
45 | |
46 | if (empty($params['results'])) { |
47 | // nothing to parse (error?), regenerate cache |
48 | return false; |
49 | } |
50 | |
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 + $_info_len); |
56 | |
57 | if ($smarty->caching == 2 && isset ($_cache_info['expires'])){ |
58 | // caching by expiration time |
59 | if ($_cache_info['expires'] > -1 && (time() > $_cache_info['expires'])) { |
60 | // cache expired, regenerate |
61 | return false; |
62 | } |
63 | } else { |
64 | // caching by lifetime |
65 | if ($smarty->cache_lifetime > -1 && (time() - $_cache_info['timestamp'] > $smarty->cache_lifetime)) { |
66 | // cache expired, regenerate |
67 | return false; |
68 | } |
69 | } |
70 | |
71 | if ($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'] < $_params['resource_timestamp']) { |
76 | // template file has changed, regenerate cache |
77 | return false; |
78 | } |
79 | } |
80 | |
81 | if (isset($_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 |
87 | return false; |
88 | } |
89 | } |
90 | } |
91 | } |
92 | |
93 | $content_cache[$params['tpl_file'].','.$params['cache_id'].','.$params['compile_id']] = array($params['results'], $_cache_info); |
94 | |
95 | $smarty->_cache_info = $_cache_info; |
96 | return true; |
97 | } |
98 | |
99 | /* vim: set expandtab: */ |
100 | |
101 | ?> |