dumpRev.php

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<?php
use MediaWiki\MediaWikiServices;
use MediaWiki\Revision\SlotRecord;
 
require_once __DIR__ . '/../Maintenance.php';
 
class DumpRev extends Maintenance {
    public function __construct() {
        parent::__construct();
        $this->addArg( 'rev-id', 'Revision ID', true );
    }
 
    public function execute() {
        $id = (int)$this->getArg();
 
        $lookup = MediaWikiServices::getInstance()->getRevisionLookup();
        $rev = $lookup->getRevisionById( $id );
        if ( !$rev ) {
            $this->fatalError( "Row not found" );
        }
 
        $content = $rev->getContent( SlotRecord::MAIN );
        if ( !$content ) {
            $this->fatalError( "Text not found" );
        }
 
        $blobStore = MediaWikiServices::getInstance()->getBlobStore();
        $slot = $rev->getSlot( SlotRecord::MAIN );
        $text = $blobStore->getBlob( $slot->getAddress() );
 
        $this->output( "Text length: " . strlen( $text ) . "\n" );
        $this->output( substr( $text, 0, 100 ) . "\n" );
    }
}
 
$maintClass = DumpRev::class;
require_once RUN_MAINTENANCE_IF_MAIN;