source: t29-www/lib/technikum29.php @ 357

Last change on this file since 357 was 357, checked in by sven, 7 years ago

t29Host-Webroot-System entwickelt.

Damit können Installationen der technikum29-Website ab nun auch in Unterverzeichnissen
(bislang allerdings nur unterhalb des DocumentRoots) installiert werden, was einem
größere Flexibilität beim lokalen Aufsetzen der Seite liefert

  • Property svn:keywords set to Id
File size: 3.4 KB
Line 
1<?php
2/**
3 * technikum29v6 - PHP Subsystem.
4 * Haupteinstiegspunkt ("WebStart.php"), welches
5 * ohne weiteren Funktionsaufruf alles macht.
6 *
7 **/
8
9if(defined('T29')) return false; // no nesting
10define('T29', true);
11
12// at least the $seiten_id must be defined
13if(!isset($seiten_id)) {
14        print "<html><pre>The t29v6 WebStart file\n";
15        print 'technikum29.php is the main include, but requires at least global <tt>$seiten_id</tt> to be defined.';
16        print "\n<a href='https://labs.technikum29.de/browser/technikum29%20Website/lib/technikum29.php'>Read my sourcecode</a>";
17        return false;
18}
19
20$lib = dirname(__FILE__);
21$webroot = realpath("$lib/../");  # file path to root of t29 web installation
22
23// early import host specific settings for making low level corrections like Bugfix #32
24require "$lib/host.php";
25$host = t29Host::detect();
26
27$file = $host->script_filename; # e.g.: "/de/page.php"
28# Bug when DOCUMENT_ROOT ends with trailing slash: make sure $file begins with /:
29if($file{0} != '/') $file = "/$file";
30
31// exactly define debugging behaviour
32if(isset($_GET['debug'])) {
33        $_GET['purge_cache'] = true;
34        $_GET['rl_debug'] = true;
35}
36
37// check for url rewriting neccessarity
38if($host->check_url_rewrite()) exit;
39
40$cache_dir = "$webroot/shared/cache";
41$languages = array(
42// shorthand => array(full name in page, path from webroot)
43        "de" => array("Deutsch",  "/de"),
44        "en" => array("English", "/en"),
45);
46
47// make sure we have a page title
48if(isset($title)) $titel = $title;
49elseif(isset($titel)) $title = $titel;
50else $titel = $title = false; // to be determined by navigation seiten_id.
51
52// try to determine the language from the file path
53$lang = substr($file, 1, 2);
54if(!in_array($lang, array_keys($languages))) $lang = "de"; # check if language exists
55$lang_path = $languages[$lang][1]; # shorthand, relative to webroot. use "$webroot$lang_path" for local.
56
57require "$lib/cache.php";
58
59$page_cache = new t29Cache(false, true); // debug, verbose
60$page_cache->set_cache_file($webroot, $file);
61$page_cache->test_files =  array(
62        __FILE__,
63        $_SERVER['SCRIPT_FILENAME'],
64        "$lib/template.php",
65        "$lib/menu.php",
66        "$lib/messages.php",
67        "$lib/host.php",
68        "$webroot$lang_path/navigation.xml",
69        "$webroot$lang_path/news.php",
70);
71
72// dynamical content:
73$static_page = !isset($dynamischer_inhalt);
74
75if(!$static_page) {
76        // Pages with dynamical content: only cache header and footer, seperately.
77        // they depend on same test files, so there is only one is_valid check.
78        $header_cache = $page_cache;
79        $footer_cache = clone $page_cache;
80
81        $header_cache->set_cache_file($webroot, $file.'-header');
82        $footer_cache->set_cache_file($webroot, $file.'-footer');
83}
84
85if($page_cache->shall_use()) {
86        if($static_page)
87                $page_cache->print_cache_and_exit();
88        else {
89                $header_cache->print_cache(true);
90                register_shutdown_function(function() use ($footer_cache) {
91                        $footer_cache->print_cache(true);
92                });
93                // now print your dynamical stuff in your page, the
94                // footer content will be automatically added afterwards.
95        }
96} else {
97        // cache missed, rebuild cache
98        require "$lib/template.php";
99        $tmpl = new t29Template($GLOBALS);
100        if($static_page)
101                // rebuild complete site cache
102                $tmpl->create_cache($page_cache);
103        else
104                // rebuild each header and footer cache
105                $tmpl->create_separate_caches($header_cache, $footer_cache);
106}
107
108
109// end of technikum29.php
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