maintenance/findhooks.php

   1 <?php
   2 /**
   3  * Simple script that try to find documented hook and hooks actually
   4  * in the code and show what's missing.
   5  *
   6  * This script assumes that:
   7  * - hooks names in hooks.txt are at the beginning of a line and single quoted.
   8  * - hooks names in code are the first parameter of wfRunHooks.
   9  *
  10  * if --online option is passed, the script will compare the hooks in the code
  11  * with the ones at http://www.mediawiki.org/wiki/Manual:Hooks
  12  *
  13  * Any instance of wfRunHooks that doesn't meet these parameters will be noted.
  14  *
  15  * @file
  16  * @ingroup Maintenance
  17  *
  18  * @author Ashar Voultoiz <hashar@altern.org>
  19  * @copyright Copyright © Ashar voultoiz
  20  * @license http://www.gnu.org/copyleft/gpl.html GNU General Public Licence 2.0 or later
  21  */
  22
  23 /** This is a command line script*/
  24 require('commandLine.inc');
  25 # GLOBALS
  26
  27 $doc = $IP . '/docs/hooks.txt';
  28 $pathinc = array(
  29         $IP.'/',
  30         $IP.'/includes/',
  31         $IP.'/includes/api/',
  32         $IP.'/includes/db/',
  33         $IP.'/includes/diff/',
  34         $IP.'/includes/filerepo/',
  35         $IP.'/includes/parser/',
  36         $IP.'/includes/specials/',
  37         $IP.'/includes/upload/',
  38         $IP.'/languages/',
  39         $IP.'/maintenance/',
  40         $IP.'/skins/',
  41 );
  42
  43 # FUNCTIONS
  44
  45 /**
  46  * @return array of documented hooks
  47  */
  48 function getHooksFromDoc() {
  49         global $doc, $options;
  50         $m = array();
  51         if( isset( $options['online'] ) ){
  52                 $content = Http::get( 'http://www.mediawiki.org/w/index.php?title=Manual:Hooks&action=raw' );
  53                 preg_match_all( '/\[\[\/([a-zA-Z0-9-_:]+)\|/', $content, $m );
  54         } else {
  55                 $content = file_get_contents( $doc );
  56                 preg_match_all( "/\n'(.*?)'/", $content, $m );
  57         }
  58         return array_unique( $m[1] );
  59 }
  60
  61 /**
  62  * Get hooks from a PHP file
  63  * @param $file Full filename to the PHP file.
  64  * @return array of hooks found.
  65  */
  66 function getHooksFromFile( $file ) {
  67         $content = file_get_contents( $file );
  68         $m = array();
  69         preg_match_all( '/wfRunHooks\(\s*([\'"])(.*?)\1/', $content, $m);
  70         return $m[2];
  71 }
  72
  73 /**
  74  * Get hooks from the source code.
  75  * @param $path Directory where the include files can be found
  76  * @return array of hooks found.
  77  */
  78 function getHooksFromPath( $path ) {
  79         $hooks = array();
  80         if( $dh = opendir($path) ) {
  81                 while(($file = readdir($dh)) !== false) {
  82                         if( filetype($path.$file) == 'file' ) {
  83                                 $hooks = array_merge( $hooks, getHooksFromFile($path.$file) );
  84                         }
  85                 }
  86                 closedir($dh);
  87         }
  88         return $hooks;
  89 }
  90
  91 /**
  92  * Get bad hooks (where the hook name could not be determined) from a PHP file
  93  * @param $file Full filename to the PHP file.
  94  * @return array of bad wfRunHooks() lines
  95  */
  96 function getBadHooksFromFile( $file ) {
  97         $content = file_get_contents( $file );
  98         $m = array();
  99         # We want to skip the "function wfRunHooks()" one.  :)
 100         preg_match_all( '/(?<!function )wfRunHooks\(\s*[^\s\'"].*/', $content, $m);
 101         $list = array();
 102         foreach( $m[0] as $match ){
 103                 $list[] = $match . "(" . $file . ")";
 104         }
 105         return $list;
 106 }
 107
 108 /**
 109  * Get bad hooks from the source code.
 110  * @param $path Directory where the include files can be found
 111  * @return array of bad wfRunHooks() lines
 112  */
 113 function getBadHooksFromPath( $path ) {
 114         $hooks = array();
 115         if( $dh = opendir($path) ) {
 116                 while(($file = readdir($dh)) !== false) {
 117                         # We don't want to read this file as it contains bad calls to wfRunHooks()
 118                         if( filetype( $path.$file ) == 'file' && !$path.$file == __FILE__ ) {
 119                                 $hooks = array_merge( $hooks, getBadHooksFromFile($path.$file) );
 120                         }
 121                 }
 122                 closedir($dh);
 123         }
 124         return $hooks;
 125 }
 126
 127 /**
 128  * Nicely output the array
 129  * @param $msg A message to show before the value
 130  * @param $arr An array
 131  * @param $sort Boolean : wheter to sort the array (Default: true)
 132  */
 133 function printArray( $msg, $arr, $sort = true ) {
 134         if($sort) asort($arr);
 135         foreach($arr as $v) echo "$msg: $v\n";
 136 }
 137
 138 # MAIN
 139
 140 $documented = getHooksFromDoc($doc);
 141 $potential = array();
 142 $bad = array();
 143 foreach( $pathinc as $dir ) {
 144         $potential = array_merge( $potential, getHooksFromPath( $dir ) );
 145         $bad = array_merge( $bad, getBadHooksFromPath( $dir ) );
 146 }
 147
 148 $potential = array_unique( $potential );
 149 $bad = array_unique( $bad );
 150 $todo = array_diff( $potential, $documented );
 151 $deprecated = array_diff( $documented, $potential );
 152
 153 // let's show the results:
 154 printArray('undocumented', $todo );
 155 printArray('not found', $deprecated );
 156 printArray('unclear hook calls', $bad );
 157
 158 if ( count( $todo ) == 0 && count( $deprecated ) == 0 && count( $bad ) == 0 )
 159         echo "Looks good!\n";