MediaWiki  REL1_22
dumpRev.php
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00001 <?php
00024 require_once __DIR__ . '/../Maintenance.php';
00025 
00032 class DumpRev extends Maintenance {
00033     public function __construct() {
00034         parent::__construct();
00035         $this->addArg( 'rev-id', 'Revision ID', true );
00036     }
00037 
00038     public function execute() {
00039         $dbr = wfGetDB( DB_SLAVE );
00040         $row = $dbr->selectRow(
00041             array( 'text', 'revision' ),
00042             array( 'old_flags', 'old_text' ),
00043             array( 'old_id=rev_text_id', 'rev_id' => $this->getArg() )
00044         );
00045         if ( !$row ) {
00046             $this->error( "Row not found", true );
00047         }
00048 
00049         $flags = explode( ',', $row->old_flags );
00050         $text = $row->old_text;
00051         if ( in_array( 'external', $flags ) ) {
00052             $this->output( "External $text\n" );
00053             if ( preg_match( '!^DB://(\w+)/(\w+)/(\w+)$!', $text, $m ) ) {
00054                 $es = ExternalStore::getStoreObject( 'DB' );
00055                 $blob = $es->fetchBlob( $m[1], $m[2], $m[3] );
00056                 if ( strtolower( get_class( $blob ) ) == 'concatenatedgziphistoryblob' ) {
00057                     $this->output( "Found external CGZ\n" );
00058                     $blob->uncompress();
00059                     $this->output( "Items: (" . implode( ', ', array_keys( $blob->mItems ) ) . ")\n" );
00060                     $text = $blob->getItem( $m[3] );
00061                 } else {
00062                     $this->output( "CGZ expected at $text, got " . gettype( $blob ) . "\n" );
00063                     $text = $blob;
00064                 }
00065             } else {
00066                 $this->output( "External plain $text\n" );
00067                 $text = ExternalStore::fetchFromURL( $text );
00068             }
00069         }
00070         if ( in_array( 'gzip', $flags ) ) {
00071             $text = gzinflate( $text );
00072         }
00073         if ( in_array( 'object', $flags ) ) {
00074             $obj = unserialize( $text );
00075             $text = $obj->getText();
00076         }
00077 
00078         if ( is_object( $text ) ) {
00079             $this->error( "Unexpectedly got object of type: " . get_class( $text ) );
00080         } else {
00081             $this->output( "Text length: " . strlen( $text ) . "\n" );
00082             $this->output( substr( $text, 0, 100 ) . "\n" );
00083         }
00084     }
00085 }
00086 
00087 $maintClass = "DumpRev";
00088 require_once RUN_MAINTENANCE_IF_MAIN;