maintenance/refreshLinks.inc

   1 <?php
   2 /**
   3  * @todo document
   4  * @package MediaWiki
   5  * @subpackage Maintenance
   6  * @version $Id$
   7  */
   8
   9 /** */
  10 define( "REPORTING_INTERVAL", 50 );
  11 define( "PAUSE_INTERVAL", 50 );
  12
  13 function refreshLinks( $start ) {
  14         global $wgUser, $wgTitle, $wgArticle, $wgEnablePersistentLC, $wgLinkCache, $wgOut;
  15
  16         $dbw =& wfGetDB( DB_MASTER );
  17
  18         $end = $dbw->selectField( 'cur', 'max(cur_id)', false );
  19
  20         print("Refreshing link table. Starting from cur_id $start of $end.\n");
  21
  22         # Don't generate TeX PNGs (lack of a sensible current directory causes errors anyway)
  23         $wgUser->setOption("math", 3);
  24
  25
  26         for ($id = $start; $id <= $end; $id++) {
  27                 if ( !($id % REPORTING_INTERVAL) ) {
  28                         print "$id\n";
  29                 }
  30
  31                 if ( !($id % PAUSE_INTERVAL) ) {
  32                         sleep(1);
  33                 }
  34
  35                 $wgTitle = Title::newFromID( $id );
  36                 if ( is_null( $wgTitle ) ) {
  37                         continue;
  38                 }
  39                 $dbw->query("BEGIN");
  40
  41                 $wgArticle = new Article( $wgTitle );
  42                 $text = $wgArticle->getContent( true );
  43                 $wgLinkCache = new LinkCache;
  44                 $wgLinkCache->forUpdate( true );
  45
  46                 # Parse the text and replace links with placeholders
  47                 $wgOut->addWikiText( $text );
  48
  49                 # Look up the links in the DB and add them to the link cache
  50                 $wgOut->transformBuffer( RLH_FOR_UPDATE );
  51                 $wgOut->clearHTML();
  52
  53                 if ( $wgEnablePersistentLC ) {
  54                         $wgLinkCache->saveToLinkscc( $id, $dbw->strencode( $wgTitle->getPrefixedDBkey() ) );
  55                 }
  56
  57                 $linksUpdate = new LinksUpdate( $id, $wgTitle->getPrefixedDBkey() );
  58                 $linksUpdate->doDumbUpdate();
  59                 $linksUpdate->fixBrokenLinks();
  60                 $dbw->query("COMMIT");
  61         }
  62 }
  63 ?>