4 * Generic cached assset server... -- No security om this.. should only return compressed CSS/JS
6 * Does a few tricks with headers to improve caching...
9 * Also includes code to generate assets...
11 * methods outputJavascriptDir / outputCssDir generate links to
12 * BASEURL/Asset/css/xxxx.yyy.zzz
13 * BASEURL/Asset/js/xxxx.yyy.zzz
16 * we deliver the file from
17 * SESSION-DIR/{$www-user}-{$ff->project}-$ff->version}-{js|css}-compile/{filename}/PATH';
22 require_once 'Pman.php';
24 class Pman_Core_Asset extends Pman {
28 'js' => 'text/javascript',
37 function get($s='', $opts = Array())
40 $this->sessionState(0);
42 $bits = explode('/', $s);
44 if (empty($bits[0]) || empty($bits[1]) || !isset($this->types[$bits[0]])) {
45 $this->jerr("invalid url");
48 $s = str_replace('/', '-', $bits[1]);
50 $ui = posix_getpwuid(posix_geteuid());
51 $ff = HTML_FlexyFramework::get();
53 $compile = session_save_path() . '/' .
54 $ui['name'] . '-' . $ff->project . '-' . $ff->version . '-'. $bits[0] . 'compile';
56 $fn = $compile . '/'. $s .'.'. $bits[0];
61 if (!file_exists($fn)) {
62 header('Content-Type: '. $this->types[$bits[0]]);
64 echo "// compiled file not found = $fn";
69 $supportsGzip = !empty($_SERVER['HTTP_ACCEPT_ENCODING']) && strpos( $_SERVER['HTTP_ACCEPT_ENCODING'], 'gzip' ) !== false;
72 $last_modified_time = filemtime($fn);
77 isset($_SERVER['HTTP_IF_MODIFIED_SINCE']) &&
78 strtotime($_SERVER['HTTP_IF_MODIFIED_SINCE']) == $last_modified_time
82 isset($_SERVER['HTTP_IF_NONE_MATCH']) &&
83 trim($_SERVER['HTTP_IF_NONE_MATCH']) == md5($fn)
85 header("HTTP/1.1 304 Not Modified");
89 header('Content-Type: '. $this->types[$bits[0]]);
92 header("Pragma: public");
94 header('Cache-Control: max-age=2592000, public');
95 header('Expires: '.gmdate('D, d M Y H:i:s \G\M\T', time() + 2592000));
96 header('Last-Modified: '.gmdate('D, d M Y H:i:s \G\M\T', $last_modified_time));
97 header('Etag: '. md5($fn));
99 if ( $supportsGzip ) {
100 $content = gzencode( file_get_contents($fn) , 9);
102 header('Content-Encoding: gzip');
103 header('Vary: Accept-Encoding');
104 header('Content-Length: '. strlen($content));
111 $fh = fopen($fn,'r');
122 function post($s='') {