4 * Copyright 1999,2000,2001,2002,2005 $ThePhpWikiProgrammingTeam
6 * This file is part of PhpWiki.
8 * PhpWiki is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * PhpWiki is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License along
19 * with PhpWiki; if not, write to the Free Software Foundation, Inc.,
20 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
23 require_once 'lib/PageList.php';
26 * With 1.3.11 the "pages" argument was renamed to "numpages".
27 * action=upgrade should deal with pages containing RandomPage modified earlier than 2005-01-24
29 class WikiPlugin_RandomPage
34 return _("RandomPage");
37 function getDescription()
39 return _("Displays a list of randomly chosen pages or redirects to a random page.");
42 function getDefaultArguments()
46 PageList::supportedArgs(),
47 array('numpages' => 20, // was pages
48 'pages' => false, // deprecated
50 'hidename' => false, // only for numpages=1
51 'exclude' => $this->default_exclude(),
55 function run($dbi, $argstr, &$request, $basepage)
58 $args = $this->getArgs($argstr, $request);
61 // Redirect would break HTML dump
62 if ($request->getArg('action') != 'browse') {
63 return $this->disabled(_("Plugin not run: not in browse mode"));
67 if (is_integer($pages)) {
70 // fix new pages handling in arg preprozessor.
71 } elseif (is_array($pages)) {
72 $numpages = (int)$pages[0];
73 if ($numpages > 0 and !$dbi->isWikiPage($numpages)) $pages = false;
77 $allpages = $dbi->getAllPages(false, $sortby, $limit, $exclude);
78 $pagearray = $allpages->asArray();
79 better_srand(); // Start with a good seed.
81 if (($numpages == 1) && $pagearray) {
82 $page = $pagearray[array_rand($pagearray)];
83 $pagename = $page->getName();
85 $request->redirect(WikiURL($pagename, false, 'absurl')); // noreturn
87 return WikiLink($pagename, false, _("RandomPage"));
89 return WikiLink($pagename);
92 $numpages = min(max(1, (int)$numpages), 20, count($pagearray));
93 $pagelist = new PageList($info, $exclude, $args);
94 $shuffle = array_rand($pagearray, $numpages);
95 if (is_array($shuffle)) {
96 foreach ($shuffle as $i)
97 if (isset($pagearray[$i])) $pagelist->addPage($pagearray[$i]);
98 } else { // if $numpages = 1
99 if (isset($pagearray[$shuffle]))
100 $pagelist->addPage($pagearray[$shuffle]);
105 function default_exclude()
107 // Some useful default pages to exclude.
108 $default_exclude = 'RandomPage,HomePage,AllPages,RecentChanges,RecentEdits,FullRecentChanges';
109 foreach (explode(",", $default_exclude) as $e) {
110 $exclude[] = gettext($e);
112 return implode(",", $exclude);
122 // c-hanging-comment-ender-p: nil
123 // indent-tabs-mode: nil