Current Path : C:/Users/Mahmood/Desktop/moodle8/lib/ |
Current File : C:/Users/Mahmood/Desktop/moodle8/lib/jslib.php |
<?php // This file is part of Moodle - http://moodle.org/ // // Moodle is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // // Moodle is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // // You should have received a copy of the GNU General Public License // along with Moodle. If not, see <http://www.gnu.org/licenses/>. /** * This file contains various javascript related functions, * all functions here are self contained and can be used in ABORT_AFTER_CONFIG scripts. * * @package core_lib * @copyright 2012 Petr Skoda (skodak) {@link http://skodak.org} * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later */ defined('MOODLE_INTERNAL') || die(); /** * Send javascript file content with as much caching as possible * @param string $jspath * @param string $etag * @param string $filename */ function js_send_cached($jspath, $etag, $filename = 'javascript.php') { require(__DIR__ . '/xsendfilelib.php'); // 90 days only - based on Moodle point release cadence being every 3 months. $lifetime = 60 * 60 * 24 * 90; header('Etag: "'.$etag.'"'); header('Content-Disposition: inline; filename="'.$filename.'"'); header('Last-Modified: '. gmdate('D, d M Y H:i:s', filemtime($jspath)) .' GMT'); header('Expires: '. gmdate('D, d M Y H:i:s', time() + $lifetime) .' GMT'); header('Pragma: '); header('Cache-Control: public, max-age='.$lifetime.', immutable'); header('Accept-Ranges: none'); header('Content-Type: application/javascript; charset=utf-8'); if (xsendfile($jspath)) { die; } if (!min_enable_zlib_compression()) { header('Content-Length: '.filesize($jspath)); } readfile($jspath); die; } /** * Send javascript without any caching * @param string $js * @param string $filename */ function js_send_uncached($js, $filename = 'javascript.php') { header('Content-Disposition: inline; filename="'.$filename.'"'); header('Last-Modified: '. gmdate('D, d M Y H:i:s', time()) .' GMT'); header('Expires: '. gmdate('D, d M Y H:i:s', time() + 2) .' GMT'); header('Pragma: '); header('Accept-Ranges: none'); header('Content-Type: application/javascript; charset=utf-8'); header('Content-Length: '.strlen($js)); echo $js; die; } /** * Send file not modified headers * @param int $lastmodified * @param string $etag */ function js_send_unmodified($lastmodified, $etag) { // 90 days only - based on Moodle point release cadence being every 3 months. $lifetime = 60 * 60 * 24 * 90; header('HTTP/1.1 304 Not Modified'); header('Expires: '. gmdate('D, d M Y H:i:s', time() + $lifetime) .' GMT'); header('Cache-Control: public, max-age='.$lifetime); header('Content-Type: application/javascript; charset=utf-8'); header('Etag: "'.$etag.'"'); if ($lastmodified) { header('Last-Modified: '. gmdate('D, d M Y H:i:s', $lastmodified) .' GMT'); } die; } /** * Create cache file for JS content * @param string $file full file path to cache file * @param string $content JS code */ function js_write_cache_file_content($file, $content) { global $CFG; clearstatcache(); if (!file_exists(dirname($file))) { @mkdir(dirname($file), $CFG->directorypermissions, true); } // Prevent serving of incomplete file from concurrent request, // the rename() should be more atomic than fwrite(). ignore_user_abort(true); if ($fp = fopen($file.'.tmp', 'xb')) { fwrite($fp, $content); fclose($fp); rename($file.'.tmp', $file); @chmod($file, $CFG->filepermissions); @unlink($file.'.tmp'); // just in case anything fails } ignore_user_abort(false); if (connection_aborted()) { die; } } /** * Sends a 404 message about CSS not being found. */ function js_send_css_not_found() { header('HTTP/1.0 404 not found'); die('JS was not found, sorry.'); }