MDL-21241 theme CSS and JS gzip compression + some more fixes
[moodle.git] / theme / yui_combo.php
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60f2c866 1<?php
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2
3// This file is part of Moodle - http://moodle.org/
4//
5// Moodle is free software: you can redistribute it and/or modify
6// it under the terms of the GNU General Public License as published by
7// the Free Software Foundation, either version 3 of the License, or
8// (at your option) any later version.
9//
10// Moodle is distributed in the hope that it will be useful,
11// but WITHOUT ANY WARRANTY; without even the implied warranty of
12// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13// GNU General Public License for more details.
14//
15// You should have received a copy of the GNU General Public License
16// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
17
18/**
19 * This file is responsible for serving of yui images
20 *
21 * @package moodlecore
22 * @copyright 2009 Petr Skoda (skodak) {@link http://skodak.org}
23 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
24 */
25
26
27// we need just the values from config.php and minlib.php
28define('ABORT_AFTER_CONFIG', true);
29require('../config.php'); // this stops immediately at the beginning of lib/setup.php
30
31// get special url parameters
32if (!$parts = combo_params()) {
33 combo_not_found();
34}
35
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36$parts = trim($parts, '&');
37
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38// find out what we are serving - only one type per request
39$content = '';
40if (substr($parts, -3) === '.js') {
41 $mimetype = 'application/x-javascript';
42} else if (substr($parts, -4) === '.css') {
43 $mimetype = 'text/css';
44} else {
45 combo_not_found();
46}
47
48$parts = explode('&', $parts);
49
50foreach ($parts as $part) {
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51 if (empty($part)) {
52 continue;
53 }
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54 $part = min_clean_param($part, 'SAFEPATH');
55 $bits = explode('/', $part);
56 if (count($bits) < 2) {
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57 $content .= "\n// Wrong combo resource $part!\n";
58 continue;
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59 }
60 $version = $bits[0];
61 if ($version != $CFG->yui3version and $version != $CFG->yui2version) {
b195b443 62 $content .= "\n// Wrong yui version $part!\n";
a4738eb3 63 continue;
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64 }
65 $contentfile = "$CFG->libdir/yui/$part";
66 if (!file_exists($contentfile) or !is_file($contentfile)) {
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67 $content .= "\n// Combo resource $part not found!\n";
68 continue;
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69 }
70 $filecontent = file_get_contents($contentfile);
71
72 if ($mimetype === 'text/css') {
73 // search for all images in yui2 CSS and serve them through the yui_image.php script
74 $filecontent = preg_replace('/([a-z-]+)\.(png|gif)/', 'yui_image.php?file='.$version.'/$1.$2', $filecontent);
75 }
76
77 $content .= $filecontent;
78}
79
80
81combo_send_cached($content, $mimetype);
82
83
84
85function combo_send_cached($content, $mimetype) {
86 $lifetime = 60*60*24*300; // 300 days === forever
87
88 header('Content-Disposition: inline; filename="combo"');
89 header('Last-Modified: '. gmdate('D, d M Y H:i:s', time()) .' GMT');
90 header('Expires: '. gmdate('D, d M Y H:i:s', time() + $lifetime) .' GMT');
91 header('Pragma: ');
945f19f7 92 header('Cache-Control: max-age=315360000');
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93 header('Accept-Ranges: none');
94 header('Content-Type: '.$mimetype);
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95 if (!min_enable_zlib_compression()) {
96 header('Content-Length: '.strlen($content));
97 }
aa42314d 98
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99 echo $content;
100 die;
101}
102
103function combo_not_found() {
104 header('HTTP/1.0 404 not found');
105 die('Combo resource not found, sorry.');
106}
107
108function combo_params() {
109 if (!empty($_SERVER['REQUEST_URI'])) {
110 $parts = explode('?', $_SERVER['REQUEST_URI']);
111 if (count($parts) != 2) {
112 return '';
113 }
114 return $parts[1];
115
116 } else if (!empty($_SERVER['QUERY_STRING'])) {
117 return $_SERVER['QUERY_STRING'];
118
119 } else {
120 return '';
121 }
122}