Extension:ImageHistoryClear

<?php
/**
 * ImageHistoryClear extension - An extension to strip TOC, history and links information from image page views by anonymous users. Made with [http://www.organicdesign.co.nz/Template:Extension Template:Extension].
 *
 * See http://www.mediawiki.org/wiki/Extension:ImageHistoryClear for installation and usage details
 *
 * @package MediaWiki
 * @subpackage Extensions
 * @author [http://www.organicdesign.co.nz/wiki/User:Jack User:Jack]
 * @copyright © 2008 [http://www.organicdesign.co.nz/wiki/User:Jack User:Jack]
 * @licence GNU General Public Licence 2.0 or later
 */

if (!defined('MEDIAWIKI')) die('Not an entry point.');
 
define('IMAGEHISTORYCLEAR_VERSION', '1.0.0, 2008-10-21');
 
$wgExtensionFunctions[] = 'efSetupImageHistoryClear';

$wgExtensionCredits['parserhook'][] = array(
	'name'        => 'ImageHistoryClear',
	'author'      => '[http://www.organicdesign.co.nz/wiki/User:Jack User:Jack]',
	'description' => 'An extension to strip TOC, history and links information from image page views by anonymous users. Made with [http://www.organicdesign.co.nz/Template:Extension Template:Extension].',
	'url'         => 'http://www.organicdesign.co.nz/Extension:ImageHistoryClear',
	'version'     => IMAGEHISTORYCLEAR_VERSION
	);
 
/**
 * Function called from the hook BeforePageDisplay, with a regular expression to replace TOC, history and image information.
 */
function efImageHistoryClear(&$out) {
	$out->mBodytext = preg_replace('%(<ul id="filetoc">.+?</ul>)(.*)(<h2 id="filehistory".+$)%s', '\2', $out->mBodytext);
	return true;
	
}
 
/**
 * Setup function specifies a condition for the user being anonymous and the page being an image page
 */
function efSetupImageHistoryClear() {
	global $wgHooks, $wgUser, $wgRequest;
	$title = Title::newFromText($wgRequest->getText('title'));
	if (is_object($title) && $title->getNamespace() == NS_IMAGE && $wgUser->isAnon()) 
		$wgHooks['BeforePageDisplay'][] = 'efImageHistoryClear';
}