377561cd1e
* Used the new functions in the relevant places throughout the core. Where this was not possible, used wfMsgNoTrans() to avoid double-parsing. * Calling wfEscapeWikiText() on a title before passing it to a message is unnecessary and causes bugs. The best idea is to let the message do its own escaping. Removed wfEscapeWikiText() from the caller of addedwatchtext, removedwatchtext, deletedtext, protect-text, nosuchusershort and movepage-moved. Updated all message files to use <nowiki>$1</nowiki> where appropriate in these messages. * Removed unnecessary empty message handling from semiprotectedpagewarning * Removed nonsense warning about the output of wfMsg() not being safe for inclusion in HTML. * Changed wfShellExec() to use passthru/ob_get_contents instead of exec(). This avoids corruption of whitespace in the response. * Added $wgValidateAllHtml feature, to optionally validate HTML on output. * Fixed missing newline in cascadeprotected in MessagesEn.php * Belatedly updated addedwatchtext to take account of the new "monobook" skin. No unwatch link in the sidebar anymore.
108 lines
2.6 KiB
PHP
108 lines
2.6 KiB
PHP
<?php
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/**
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* Special page to direct the user to a random page
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*
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* @addtogroup SpecialPage
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* @author Rob Church <robchur@gmail.com>, Ilmari Karonen
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* @license GNU General Public Licence 2.0 or later
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*/
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/**
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* Special page to direct the user to a random page
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*
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* @addtogroup SpecialPage
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*/
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class RandomPage extends SpecialPage {
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private $namespace = NS_MAIN; // namespace to select pages from
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function __construct( $name = 'Randompage' ){
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parent::__construct( $name );
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}
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public function getNamespace() {
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return $this->namespace;
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}
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public function setNamespace ( $ns ) {
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if( $ns < NS_MAIN ) $ns = NS_MAIN;
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$this->namespace = $ns;
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}
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// select redirects instead of normal pages?
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// Overriden by SpecialRandomredirect
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public function isRedirect(){
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return false;
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}
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public function execute( $par ) {
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global $wgOut, $wgContLang;
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if ($par)
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$this->setNamespace( $wgContLang->getNsIndex( $par ) );
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$title = $this->getRandomTitle();
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if( is_null( $title ) ) {
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$this->setHeaders();
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$wgOut->addWikiMsg( strtolower( $this->mName ) . '-nopages' );
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return;
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}
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$query = $this->isRedirect() ? 'redirect=no' : '';
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$wgOut->redirect( $title->getFullUrl( $query ) );
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}
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/**
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* Choose a random title.
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* @return Title object (or null if nothing to choose from)
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*/
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public function getRandomTitle() {
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$randstr = wfRandom();
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$row = $this->selectRandomPageFromDB( $randstr );
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/* If we picked a value that was higher than any in
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* the DB, wrap around and select the page with the
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* lowest value instead! One might think this would
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* skew the distribution, but in fact it won't cause
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* any more bias than what the page_random scheme
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* causes anyway. Trust me, I'm a mathematician. :)
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*/
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if( !$row )
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$row = $this->selectRandomPageFromDB( "0" );
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if( $row )
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return Title::makeTitleSafe( $this->namespace, $row->page_title );
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else
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return null;
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}
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private function selectRandomPageFromDB( $randstr ) {
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global $wgExtraRandompageSQL;
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$fname = 'RandomPage::selectRandomPageFromDB';
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$dbr = wfGetDB( DB_SLAVE );
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$use_index = $dbr->useIndexClause( 'page_random' );
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$page = $dbr->tableName( 'page' );
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$ns = (int) $this->namespace;
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$redirect = $this->isRedirect() ? 1 : 0;
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$extra = $wgExtraRandompageSQL ? "AND ($wgExtraRandompageSQL)" : "";
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$sql = "SELECT page_title
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FROM $page $use_index
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WHERE page_namespace = $ns
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AND page_is_redirect = $redirect
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AND page_random >= $randstr
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$extra
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ORDER BY page_random";
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$sql = $dbr->limitResult( $sql, 1, 0 );
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$res = $dbr->query( $sql, $fname );
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return $dbr->fetchObject( $res );
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}
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}
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