source: trunk/xpressme_integration_kit/wp-content/plugins/xpressme/include/class-xpress-upgrader.php @ 698

<?php
include_once ABSPATH . 'wp-admin/includes/class-wp-upgrader.php';
/**
 * Core Upgrader class for WordPress. It allows for WordPress to upgrade itself in combiantion with the wp-admin/includes/update-core.php file
 *
 * @TODO More Detailed docs, for methods as well.
 *
 * @package WordPress
 * @subpackage Upgrader
 * @since 2.8.0
 */
class Xpress_Upgrader extends WP_Upgrader {

        function upgrade_strings() {
                $this->strings['up_to_date'] = __('XPressME Integration Kit is at the latest version.');
                $this->strings['no_package'] = __('Upgrade package not available.');
                $this->strings['downloading_package'] = __('Downloading update from <span class="code">%s</span>&#8230;');
                $this->strings['unpack_package'] = __('Unpacking the update&#8230;');
                $this->strings['copy_failed'] = __('Could not copy files.');
                $this->strings['make_config'] = __('Delete source wp-config.php.');
                $this->strings['delete_failed'] = __('Could not delete files.');
        }

        function upgrade($current) {
                global $wp_filesystem;

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

                if ( !empty($feedback) )
                        add_filter('update_feedback', $feedback);

                // Is an update available?
                if ( !isset( $current->response ) || $current->response == 'latest' )
                        return new WP_Error('up_to_date', $this->strings['up_to_date']);

                $res = $this->fs_connect( array(ABSPATH, WP_CONTENT_DIR) );
                if ( is_wp_error($res) )
                        return $res;

                $wp_dir = trailingslashit($wp_filesystem->abspath());

                $download = $this->download_package( $current->package );
                if ( is_wp_error($download) )
                        return $download;

                $working_dir = $this->unpack_package( $download );
                if ( is_wp_error($working_dir) )
                        return $working_dir;
                $subdirs = $wp_filesystem->dirlist($working_dir,false);
                foreach($subdirs as $subdir){
                        $subdir_name = $subdir['name'];
                }
                
                $kit_dir = $working_dir .'/' .$subdir_name .'/xpressme_integration_kit/';
                
                // Copy update-core.php from the new version into place.
                $update_xpress_file = 'wp-content/plugins/xpressme/include/update_xpress.php';
//              if ( !$wp_filesystem->copy($kit_dir . $update_xpress_file, $wp_dir . $update_xpress_file, true) ) {
//                      $wp_filesystem->delete($working_dir, true);
//                      return new WP_Error('copy_failed', $this->strings['copy_failed']);
//              }
                $wp_filesystem->chmod($wp_dir . $update_xpress_file, FS_CHMOD_FILE);

                require(ABSPATH . $update_xpress_file);

                return update_xpress($kit_dir, $wp_dir);
                
        // Remove working directory
                $wp_filesystem->delete($working_dir, true);
                if ( !$wp_filesystem->delete($working_dir, true)){
                        return new WP_Error('delete_failed', $this->strings['delete_failed']);
                }
                show_message( __('Delete Working directory') );
                $wp_filesystem->chmod($wp_dir . 'templates/', 0777);
        }
}