before example

public function upgrade( $plugin, $args = array() ) {
        $defaults    = array(
            'clear_update_cache' => true,
        );
        $parsed_args = wp_parse_args( $args, $defaults );

        $this->init();
        $this->upgrade_strings();

        $current = get_site_transient( 'update_plugins' );
        if ( ! isset( $current->response[ $plugin ] ) ) {
            $this->skin->before();
            $this->skin->set_result( false );
            $this->skin->error( 'up_to_date' );
            $this->skin->after();
            return false;
        }

        // Get the URL to the zip file.         $r = $current->response[ $plugin ];

        add_filter( 'upgrader_pre_install', array( $this, 'deactivate_plugin_before_upgrade' ), 10, 2 );
        add_filter( 'upgrader_pre_install', array( $this, 'active_before' ), 10, 2 );
        

$defaults    = array(
            'clear_update_cache' => true,
        );
        $parsed_args = wp_parse_args( $args, $defaults );

        $this->init();
        $this->upgrade_strings();

        // Is an update available?         $current = get_site_transient( 'update_themes' );
        if ( ! isset( $current->response[ $theme ] ) ) {
            $this->skin->before();
            $this->skin->set_result( false );
            $this->skin->error( 'up_to_date' );
            $this->skin->after();
            return false;
        }

        $r = $current->response[ $theme ];

        add_filter( 'upgrader_pre_install', array( $this, 'current_before' ), 10, 2 );
        add_filter( 'upgrader_post_install', array( $this, 'current_after' ), 10, 2 );
        add_filter( 'upgrader_clear_destination', array( $this, 'delete_old_theme' ), 10, 4 );
        

public function add_strings() {
        parent::add_strings();
        /* translators: 1: Theme name, 2: Number of the theme, 3: Total number of themes being updated. */
        $this->upgrader->strings['skin_before_update_header'] = __( 'Updating Theme %1$s (%2$d/%3$d)' );
    }

    /** * @param string $title */
    public function before( $title = '' ) {
        parent::before( $this->theme_info->display( 'Name' ) );
    }

    /** * @param string $title */
    public function after( $title = '' ) {
        parent::after( $this->theme_info->display( 'Name' ) );
        $this->decrement_update_count( 'theme' );
    }

    /** */

// Connect to the filesystem first.         $res = $this->fs_connect( array( WP_CONTENT_DIR, $options['destination'] ) );
        // Mainly for non-connected filesystem.         if ( ! $res ) {
            if ( ! $options['is_multi'] ) {
                $this->skin->footer();
            }
            return false;
        }

        $this->skin->before();

        if ( is_wp_error( $res ) ) {
            $this->skin->error( $res );
            $this->skin->after();
            if ( ! $options['is_multi'] ) {
                $this->skin->footer();
            }
            return $res;
        }

        /* * Download the package. Note: If the package is the full path * to an existing local file, it will be returned untouched. */

    public function defaultFalse(): static
    {
        return $this->defaultValue(false);
    }

    /** * Sets an expression to run before the normalization. */
    public function beforeNormalization(): ExprBuilder
    {
        return $this->normalization()->before();
    }

    /** * Denies the node value being empty. * * @return $this */
    public function cannotBeEmpty(): static
    {
        $this->allowEmptyValue = false;

        

' ',
            ],
        ];
    }

    /** * @dataProvider provideBeforeAfter */
    public function testBeforeAfter(string $expected, string $needle, string $origin, int $offset, bool $before)
    {
        $result = static::createFromString($origin);
        $result = $before ? $result->before($needle, false, $offset) : $result->after($needle, true, $offset);
        $this->assertEquals(static::createFromString($expected), $result);
    }

    public static function provideBeforeAfter()
    {
        return [
            ['hello world', '', 'hello world', 0, true],
            ['hello world', '', 'hello world', 0, false],
            ['hello World', 'w', 'hello World', 0, true],
            ['hello World', 'w', 'hello World', 0, false],
            ['hello world', 'o', 'hello world', 10, true],
            [

// Get an instance             $filter = new $filter();
        }

        if (! $filter instanceof FilterInterface) {
            throw FilterException::forIncorrectInterface(get_class($filter));
        }

        $request = clone $this->request;

        if ($position === 'before') {
            return static fn (?array $params = null) => $filter->before($request, $params);
        }

        $response = clone $this->response;

        return static fn (?array $params = null) => $filter->after($request, $response, $params);
    }

    /** * Gets an array of filter aliases enabled * for the given route at position. * * @param string $route The route to test * @param string $position "before" or "after" * * @return string[] The filter aliases */

        $this->initialize(strtolower($uri));

        foreach ($this->filtersClass[$position] as $className) {
            $class = new $className();

            if (! $class instanceof FilterInterface) {
                throw FilterException::forIncorrectInterface(get_class($class));
            }

            if ($position === 'before') {
                $result = $class->before(
                    $this->request,
                    $this->argumentsClass[$className] ?? null
                );

                if ($result instanceof RequestInterface) {
                    $this->request = $result;

                    continue;
                }

                // If the response object was sent back,

public function add_strings() {
        parent::add_strings();
        /* translators: 1: Plugin name, 2: Number of the plugin, 3: Total number of plugins being updated. */
        $this->upgrader->strings['skin_before_update_header'] = __( 'Updating Plugin %1$s (%2$d/%3$d)' );
    }

    /** * @param string $title */
    public function before( $title = '' ) {
        parent::before( $this->plugin_info['Title'] );
    }

    /** * @param string $title */
    public function after( $title = '' ) {
        parent::after( $this->plugin_info['Title'] );
        $this->decrement_update_count( 'plugin' );
    }

    /** */