maintenance/compressOld.inc

   1 <?php
   2
   3 include_once( "Article.php" );
   4
   5 function compressOldPages( $start = 0 ) {
   6         $chunksize = 50;
   7         print "Starting from old_id $start...\n";
   8         do {
   9                 $end = $start + $chunksize;
  10                 $sql = "SELECT old_id,old_flags,old_namespace,old_title,old_text FROM old WHERE old_id>=$start ORDER BY old_id LIMIT $chunksize";
  11                 $res = wfQuery( $sql, DB_READ, "compressOldPages" );
  12                 if( wfNumRows( $res ) == 0 ) {
  13                         break;
  14                 }
  15                 $last = $start;
  16                 while( $row = wfFetchObject( $res ) ) {
  17                         # print "  {$row->old_id} - {$row->old_namespace}:{$row->old_title}\n";
  18                         compressPage( $row );
  19                         $last = $row->old_id;
  20                 }
  21                 wfFreeResult( $res );
  22                 $start = $last + 1; # Deletion may leave long empty stretches
  23                 print "$start...\n";
  24         } while( true );
  25 }
  26
  27 function compressPage( $row ) {
  28         if( false !== strpos( $row->old_flags, "gzip" ) ) {
  29                 print "Already compressed row {$row->old_id}?\n";
  30                 return false;
  31         }
  32         $flags = $row->old_flags ? "{$row->old_flags},gzip" : "gzip";
  33         $compress = wfStrencode( gzdeflate( $row->old_text ) );
  34
  35         $sql = "UPDATE old SET old_flags='$flags', old_text='$compress' WHERE old_id={$row->old_id} LIMIT 1";
  36          $res = wfQuery( $sql, DB_WRITE, 'compressPage' );
  37         return $res;
  38 }
  39
  40 ?>