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e586807d H |
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, | |
b42b2bf9 | 38 | array('read', &$smarty, &$params['results'], $params['tpl_file'], $params['cache_id'], $params['compile_id'], null)); |
e586807d H |
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 | ||
b42b2bf9 H |
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 + $_info_len); | |
e586807d H |
56 | |
57 | if ($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 | ||
e586807d H |
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 | ?> |