maintenance/compressOld.inc

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