MWTidy.php

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<?php
class MWTidy {
    private static $instance;
 
    public static function tidy( $text ) {
        $driver = self::singleton();
        if ( !$driver ) {
            throw new MWException( __METHOD__ .
                ': tidy is disabled, caller should have checked MWTidy::isEnabled()' );
        }
        return $driver->tidy( $text );
    }
 
    public static function isEnabled() {
        return self::singleton() !== false;
    }
 
    public static function singleton() {
        global $wgTidyConfig;
        if ( self::$instance === null ) {
            self::$instance = self::factory( $wgTidyConfig );
        }
        return self::$instance;
    }
 
    public static function factory( array $config = null ) {
        return new MediaWiki\Tidy\RemexDriver( $config ?? [] );
    }
 
    public static function setInstance( $instance ) {
        wfDeprecated( __METHOD__, '1.33' );
        self::$instance = $instance;
    }
 
    public static function destroySingleton() {
        self::$instance = null;
    }
}