reassignEdits.php

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

class ReassignEdits extends Maintenance {
        public function __construct() {
                parent::__construct();
                $this->mDescription = "Reassign edits from one user to another";
                $this->addOption( "force", "Reassign even if the target user doesn't exist" );
                $this->addOption( "norc", "Don't update the recent changes table" );
                $this->addOption( "report", "Print out details of what would be changed, but don't update it" );
                $this->addArg( 'from', 'Old user to take edits from' );
                $this->addArg( 'to', 'New user to give edits to' );
        }

        public function execute() {
                if ( $this->hasArg( 0 ) && $this->hasArg( 1 ) ) {
                        # Set up the users involved
                        $from = $this->initialiseUser( $this->getArg( 0 ) );
                        $to   = $this->initialiseUser( $this->getArg( 1 ) );

                        # If the target doesn't exist, and --force is not set, stop here
                        if ( $to->getId() || $this->hasOption( 'force' ) ) {
                                # Reassign the edits
                                $report = $this->hasOption( 'report' );
                                $this->doReassignEdits( $from, $to, !$this->hasOption( 'norc' ), $report );
                                # If reporting, and there were items, advise the user to run without --report
                                if ( $report ) {
                                        $this->output( "Run the script again without --report to update.\n" );
                                }
                        } else {
                                $ton = $to->getName();
                                $this->error( "User '{$ton}' not found." );
                        }
                }
        }

        private function doReassignEdits( &$from, &$to, $rc = false, $report = false ) {
                $dbw = wfGetDB( DB_MASTER );
                $dbw->begin( __METHOD__ );

                # Count things
                $this->output( "Checking current edits..." );
                $res = $dbw->select( 'revision', 'COUNT(*) AS count', $this->userConditions( $from, 'rev_user', 'rev_user_text' ), __METHOD__ );
                $row = $dbw->fetchObject( $res );
                $cur = $row->count;
                $this->output( "found {$cur}.\n" );

                $this->output( "Checking deleted edits..." );
                $res = $dbw->select( 'archive', 'COUNT(*) AS count', $this->userConditions( $from, 'ar_user', 'ar_user_text' ), __METHOD__ );
                $row = $dbw->fetchObject( $res );
                $del = $row->count;
                $this->output( "found {$del}.\n" );

                # Don't count recent changes if we're not supposed to
                if ( $rc ) {
                        $this->output( "Checking recent changes..." );
                        $res = $dbw->select( 'recentchanges', 'COUNT(*) AS count', $this->userConditions( $from, 'rc_user', 'rc_user_text' ), __METHOD__ );
                        $row = $dbw->fetchObject( $res );
                        $rec = $row->count;
                        $this->output( "found {$rec}.\n" );
                } else {
                        $rec = 0;
                }

                $total = $cur + $del + $rec;
                $this->output( "\nTotal entries to change: {$total}\n" );

                if ( !$report ) {
                        if ( $total ) {
                                # Reassign edits
                                $this->output( "\nReassigning current edits..." );
                                $dbw->update( 'revision', $this->userSpecification( $to, 'rev_user', 'rev_user_text' ),
                                        $this->userConditions( $from, 'rev_user', 'rev_user_text' ), __METHOD__ );
                                $this->output( "done.\nReassigning deleted edits..." );
                                $dbw->update( 'archive', $this->userSpecification( $to, 'ar_user', 'ar_user_text' ),
                                        $this->userConditions( $from, 'ar_user', 'ar_user_text' ), __METHOD__ );
                                $this->output( "done.\n" );
                                # Update recent changes if required
                                if ( $rc ) {
                                        $this->output( "Updating recent changes..." );
                                        $dbw->update( 'recentchanges', $this->userSpecification( $to, 'rc_user', 'rc_user_text' ),
                                                $this->userConditions( $from, 'rc_user', 'rc_user_text' ), __METHOD__ );
                                        $this->output( "done.\n" );
                                }
                        }
                }

                $dbw->commit( __METHOD__ );
                return (int)$total;
        }

        private function userConditions( &$user, $idfield, $utfield ) {
                return $user->getId() ? array( $idfield => $user->getId() ) : array( $utfield => $user->getName() );
        }

        private function userSpecification( &$user, $idfield, $utfield ) {
                return array( $idfield => $user->getId(), $utfield => $user->getName() );
        }

        private function initialiseUser( $username ) {
                if ( User::isIP( $username ) ) {
                        $user = new User();
                        $user->setId( 0 );
                        $user->setName( $username );
                } else {
                        $user = User::newFromName( $username );
                        if ( !$user ) {
                                $this->error( "Invalid username", true );
                        }
                }
                $user->load();
                return $user;
        }


}

$maintClass = "ReassignEdits";
require_once( RUN_MAINTENANCE_IF_MAIN );