1: <?php
 2: namespace Module\StaticCache;
 3: 
 4: /**
 5:  * Recursively deletes files and directories
 6:  * @param  string $dir A directory to delete
 7:  */
 8: function rrmdir($dir) {
 9:     if (is_dir($dir)) {
10:         $objects = scandir($dir);
11: 
12:         foreach ($objects as $object) {
13:             if ($object != "." && $object != "..") {
14:                 if (filetype($dir."/".$object) == "dir") rrmdir($dir."/".$object); else unlink($dir."/".$object);
15:             }
16:         }
17: 
18:         reset($objects);
19:         @rmdir($dir);
20:     }
21: }
22: 
23: /**
24:  * Hooks into the preprocess hooks to start buffering and clear old cached files
25:  *
26:  * @return void
27:  * @internal
28:  */
29: function preprocess() {
30:     $dir = $_SERVER['DOCUMENT_ROOT'] . DIRECTORY_SEPARATOR . "cache" . DIRECTORY_SEPARATOR . "normal" . DIRECTORY_SEPARATOR;
31: 
32:     if (file_exists($dir)) {
33:         $created = filemtime($dir);
34:         $cleanInterval = 300;
35: 
36:         if (time() - $created > $cleanInterval) {
37:             rrmdir($dir);
38:         } else {
39:             header("SM-Cache Expires: " . ($cleanInterval - (time() - $created)) . " seconds.");
40:         }
41:     }
42: 
43:     ob_start();
44: }
45: 
46: /**
47:  * Caches the Page, unless we at the homepage
48:  * @return void
49:  * @internal
50:  */
51: function postprocess() {
52:     $root = $_SERVER['DOCUMENT_ROOT'] . DIRECTORY_SEPARATOR;
53:     $cachedir = "cache" . DIRECTORY_SEPARATOR . "normal" . DIRECTORY_SEPARATOR;
54:     $uri = explode('?', $_SERVER['REQUEST_URI']);
55:     $uri = reset($uri);
56:     $file = $uri . '_' . $_SERVER['QUERY_STRING'] . '.html';
57:     $cachefile = $root . $cachedir . $_SERVER['SERVER_NAME'] . $file;
58: 
59:     $full_html = ob_get_flush() . "\n<!-- StaticCached -->";
60: 
61:     if (!is_dir(dirname($cachefile)) && !mkdir(dirname($cachefile), 0777, true)) {
62:         throw new \Exception('StaticCache: Cannot make directory.');
63:     }
64: 
65:     if (!$static = fopen($cachefile, "w")) {
66:         throw new \Exception("StaticCache: Unable to open file!");
67:     }
68: 
69:     fwrite($static, $full_html);
70:     fclose($static);
71: }
72: 
73: 
74: if (\Sleepy\SM::isLive()) {
75:     \Sleepy\Hook::doAction('sleepy_preprocess',  '\Module\StaticCache\preprocess' );
76:     \Sleepy\Hook::doAction('sleepy_postprocess', '\Module\StaticCache\postprocess');
77: }