ApiErrorFormatter_BackCompat.php

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<?php
use MediaWiki\MediaWikiServices;
 
// phpcs:ignore Squiz.Classes.ValidClassName.NotCamelCaps
class ApiErrorFormatter_BackCompat extends ApiErrorFormatter {
 
    public function __construct( ApiResult $result ) {
        parent::__construct(
            $result,
            MediaWikiServices::getInstance()->getLanguageFactory()->getLanguage( 'en' ),
            'none',
            false
        );
    }
 
    public function getFormat() {
        return 'bc';
    }
 
    public function arrayFromStatus( StatusValue $status, $type = 'error', $format = null ) {
        if ( $status->isGood() || !$status->getErrors() ) {
            return [];
        }
 
        $result = [];
        foreach ( $status->getErrorsByType( $type ) as $error ) {
            $msg = ApiMessage::create( $error );
            $error = [
                'message' => $msg->getKey(),
                'params' => $msg->getParams(),
                'code' => $msg->getApiCode(),
            ] + $error;
            ApiResult::setIndexedTagName( $error['params'], 'param' );
            $result[] = $error;
        }
        ApiResult::setIndexedTagName( $result, $type );
 
        return $result;
    }
 
    protected function formatMessageInternal( $msg, $format ) {
        return [
            'code' => $msg->getApiCode(),
            'info' => $msg->text(),
        ] + $msg->getApiData();
    }
 
    public function formatException( Throwable $exception, array $options = [] ) {
        $ret = parent::formatException( $exception, $options );
        return empty( $options['bc'] ) ? $ret : $ret['info'];
    }
 
    protected function addWarningOrError( $tag, $modulePath, $msg ) {
        $value = self::stripMarkup( $msg->text() );
 
        if ( $tag === 'error' ) {
            // In BC mode, only one error
            $existingError = $this->result->getResultData( [ 'error' ] );
            if ( !is_array( $existingError ) ||
                !isset( $existingError['code'] ) || !isset( $existingError['info'] )
            ) {
                $value = [
                    'code' => $msg->getApiCode(),
                    'info' => $value,
                ] + $msg->getApiData();
                $this->result->addValue( null, 'error', $value,
                    ApiResult::OVERRIDE | ApiResult::ADD_ON_TOP | ApiResult::NO_SIZE_CHECK );
            }
        } else {
            if ( $modulePath === null ) {
                $moduleName = 'unknown';
            } else {
                $i = strrpos( $modulePath, '+' );
                $moduleName = $i === false ? $modulePath : substr( $modulePath, $i + 1 );
            }
 
            // Don't add duplicate warnings
            $tag .= 's';
            $path = [ $tag, $moduleName ];
            $oldWarning = $this->result->getResultData( [ $tag, $moduleName, $tag ] );
            if ( $oldWarning !== null ) {
                $warnPos = strpos( $oldWarning, $value );
                // If $value was found in $oldWarning, check if it starts at 0 or after "\n"
                if ( $warnPos !== false && ( $warnPos === 0 || $oldWarning[$warnPos - 1] === "\n" ) ) {
                    // Check if $value is followed by "\n" or the end of the $oldWarning
                    $warnPos += strlen( $value );
                    if ( strlen( $oldWarning ) <= $warnPos || $oldWarning[$warnPos] === "\n" ) {
                        return;
                    }
                }
                // If there is a warning already, append it to the existing one
                $value = "$oldWarning\n$value";
            }
            $this->result->addContentValue( $path, $tag, $value,
                ApiResult::OVERRIDE | ApiResult::ADD_ON_TOP | ApiResult::NO_SIZE_CHECK );
        }
    }
}