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Current File : /var/www/element/data/www/wiki.element.ru/maintenance/findhooks.php

<?php
/**
 * Simple script that try to find documented hook and hooks actually
 * in the code and show what's missing.
 * 
 * This script assumes that:
 * - hooks names in hooks.txt are at the beginning of a line and single quoted.
 * - hooks names in code are the first parameter of wfRunHooks.
 *
 * if --online option is passed, the script will compare the hooks in the code
 * with the ones at http://www.mediawiki.org/wiki/Manual:Hooks
 *
 * Any instance of wfRunHooks that doesn't meet these parameters will be noted.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 * http://www.gnu.org/copyleft/gpl.html
 *
 * @ingroup Maintenance
 *
 * @author Ashar Voultoiz <hashar@altern.org>
 * @copyright Copyright © Ashar voultoiz
 * @license http://www.gnu.org/copyleft/gpl.html GNU General Public Licence 2.0 or later
 */

require_once( dirname(__FILE__) . '/Maintenance.php' );

class FindHooks extends Maintenance {
	public function __construct() {
		parent::__construct();
		$this->mDescription = "Find hooks that are undocumented, missing, or just plain wrong";
		$this->addOption( 'online', 'Check against mediawiki.org hook documentation' );
	}

	public function getDbType() {
		return Maintenance::DB_NONE;
	}

	public function execute() {
		global $IP;

		$documented = $this->getHooksFromDoc( $IP . '/docs/hooks.txt' );
		$potential = array();
		$bad = array();
		$pathinc = array(
			$IP.'/',
			$IP.'/includes/',
			$IP.'/includes/api/',
			$IP.'/includes/db/',
			$IP.'/includes/diff/',
			$IP.'/includes/filerepo/',
			$IP.'/includes/parser/',
			$IP.'/includes/search/',
			$IP.'/includes/specials/',
			$IP.'/includes/upload/',
			$IP.'/languages/',
			$IP.'/maintenance/',
			$IP.'/skins/',
		);

		foreach( $pathinc as $dir ) {
			$potential = array_merge( $potential, $this->getHooksFromPath( $dir ) );
			$bad = array_merge( $bad, $this->getBadHooksFromPath( $dir ) );
		}
	
		$potential = array_unique( $potential );
		$bad = array_unique( $bad );
		$todo = array_diff( $potential, $documented );
		$deprecated = array_diff( $documented, $potential );
	
		// let's show the results:
		$this->printArray('Undocumented', $todo );
		$this->printArray('Documented and not found', $deprecated );
		$this->printArray('Unclear hook calls', $bad );
	
		if ( count( $todo ) == 0 && count( $deprecated ) == 0 && count( $bad ) == 0 ) 
			$this->output( "Looks good!\n" );
	}

	/**
	 * Get the hook documentation, either locally or from mediawiki.org
	 * @return array of documented hooks
	 */
	private function getHooksFromDoc( $doc ) {
		if( $this->hasOption( 'online' ) ){
			// All hooks
			$allhookdata = Http::get( 'http://www.mediawiki.org/w/api.php?action=query&list=categorymembers&cmtitle=Category:MediaWiki_hooks&cmlimit=500&format=php' );
			$allhookdata = unserialize( $allhookdata );
			$allhooks = array();
			foreach( $allhookdata['query']['categorymembers'] as $page ) {
				$found = preg_match( '/Manual\:Hooks\/([a-zA-Z0-9- :]+)/', $page['title'], $matches );
				if( $found ) {
					$hook = str_replace( ' ', '_', $matches[1] );
					$allhooks[] = $hook;
				}
			}
			// Removed hooks
			$oldhookdata = Http::get( 'http://www.mediawiki.org/w/api.php?action=query&list=categorymembers&cmtitle=Category:Removed_hooks&cmlimit=500&format=php' );
			$oldhookdata = unserialize( $oldhookdata );
			$removed = array();
			foreach( $oldhookdata['query']['categorymembers'] as $page ) {
				$found = preg_match( '/Manual\:Hooks\/([a-zA-Z0-9- :]+)/', $page['title'], $matches );
				if( $found ) {
					$hook = str_replace( ' ', '_', $matches[1] );
					$removed[] = $hook;
				}
			}
			return array_diff( $allhooks, $removed );
		} else {
			$m = array();
			$content = file_get_contents( $doc );
			preg_match_all( "/\n'(.*?)'/", $content, $m );
			return array_unique( $m[1] );
		}
	}

	/**
	 * Get hooks from a PHP file
	 * @param $file Full filename to the PHP file.
	 * @return array of hooks found.
	 */
	private function getHooksFromFile( $file ) {
		$content = file_get_contents( $file );
		$m = array();
		preg_match_all( '/wfRunHooks\(\s*([\'"])(.*?)\1/', $content, $m);
		return $m[2];
	}

	/**
	 * Get hooks from the source code.
	 * @param $path Directory where the include files can be found
	 * @return array of hooks found.
	 */
	private function getHooksFromPath( $path ) {
		$hooks = array();
		if( $dh = opendir($path) ) {
			while(($file = readdir($dh)) !== false) {
				if( filetype($path.$file) == 'file' ) {
					$hooks = array_merge( $hooks, $this->getHooksFromFile($path.$file) );
				}
			}
			closedir($dh);
		}
		return $hooks;
	}

	/**
	 * Get bad hooks (where the hook name could not be determined) from a PHP file
	 * @param $file Full filename to the PHP file.
	 * @return array of bad wfRunHooks() lines
	 */
	private function getBadHooksFromFile( $file ) {
		$content = file_get_contents( $file );
		$m = array();
		# We want to skip the "function wfRunHooks()" one.  :)
		preg_match_all( '/(?<!function )wfRunHooks\(\s*[^\s\'"].*/', $content, $m);
		$list = array();
		foreach( $m[0] as $match ){
			$list[] = $match . "(" . $file . ")";
		}
		return $list;
	}

	/**
	 * Get bad hooks from the source code.
	 * @param $path Directory where the include files can be found
	 * @return array of bad wfRunHooks() lines
	 */
	private function getBadHooksFromPath( $path ) {
		$hooks = array();
		if( $dh = opendir($path) ) {
			while(($file = readdir($dh)) !== false) {
				# We don't want to read this file as it contains bad calls to wfRunHooks()
				if( filetype( $path.$file ) == 'file' && !$path.$file == __FILE__ ) {
					$hooks = array_merge( $hooks, $this->getBadHooksFromFile($path.$file) );
				}
			}
			closedir($dh);
		}
		return $hooks;
	}

	/**
	 * Nicely output the array
	 * @param $msg A message to show before the value
	 * @param $arr An array
	 * @param $sort Boolean : wheter to sort the array (Default: true)
	 */
	private function printArray( $msg, $arr, $sort = true ) {
		if($sort) asort($arr); 
		foreach($arr as $v) $this->output( "$msg: $v\n" );
	}
}

$maintClass = "FindHooks";
require_once( DO_MAINTENANCE );