nukeNS.php

Go to the documentation of this file.

<?php
require_once __DIR__ . '/Maintenance.php';

class NukeNS extends Maintenance {
    public function __construct() {
        parent::__construct();
        $this->mDescription = "Remove pages with only 1 revision from any namespace";
        $this->addOption( 'delete', "Actually delete the page" );
        $this->addOption( 'ns', 'Namespace to delete from, default NS_MEDIAWIKI', false, true );
        $this->addOption( 'all', 'Delete everything regardless of revision count' );
    }

    public function execute() {
        $ns = $this->getOption( 'ns', NS_MEDIAWIKI );
        $delete = $this->getOption( 'delete', false );
        $all = $this->getOption( 'all', false );
        $dbw = wfGetDB( DB_MASTER );
        $dbw->begin( __METHOD__ );

        $tbl_pag = $dbw->tableName( 'page' );
        $tbl_rev = $dbw->tableName( 'revision' );
        $res = $dbw->query( "SELECT page_title FROM $tbl_pag WHERE page_namespace = $ns" );

        $n_deleted = 0;

        foreach ( $res as $row ) {
            // echo "$ns_name:".$row->page_title, "\n";
            $title = Title::makeTitle( $ns, $row->page_title );
            $id = $title->getArticleID();

            // Get corresponding revisions
            $res2 = $dbw->query( "SELECT rev_id FROM $tbl_rev WHERE rev_page = $id" );
            $revs = array();

            foreach ( $res2 as $row2 ) {
                $revs[] = $row2->rev_id;
            }
            $count = count( $revs );

            // skip anything that looks modified (i.e. multiple revs)
            if ( $all || $count == 1 ) {
                # echo $title->getPrefixedText(), "\t", $count, "\n";
                $this->output( "delete: " . $title->getPrefixedText() . "\n" );

                // as much as I hate to cut & paste this, it's a little different, and
                // I already have the id & revs
                if ( $delete ) {
                    $dbw->query( "DELETE FROM $tbl_pag WHERE page_id = $id" );
                    $dbw->commit( __METHOD__ );
                    // Delete revisions as appropriate
                    $child = $this->runChild( 'NukePage', 'nukePage.php' );
                    $child->deleteRevisions( $revs );
                    $this->purgeRedundantText( true );
                    $n_deleted ++;
                }
            } else {
                $this->output( "skip: " . $title->getPrefixedText() . "\n" );
            }
        }
        $dbw->commit( __METHOD__ );

        if ( $n_deleted > 0 ) {
            # update statistics - better to decrement existing count, or just count
            # the page table?
            $pages = $dbw->selectField( 'site_stats', 'ss_total_pages' );
            $pages -= $n_deleted;
            $dbw->update(
                'site_stats',
                array( 'ss_total_pages' => $pages ),
                array( 'ss_row_id' => 1 ),
                __METHOD__
            );
        }

        if ( !$delete ) {
            $this->output( "To update the database, run the script with the --delete option.\n" );
        }
    }
}

$maintClass = "NukeNS";
require_once RUN_MAINTENANCE_IF_MAIN;