Edit File: Metadata.php
<?php if ( !class_exists('Puc_v4p11_Metadata', false) ): /** * A base container for holding information about updates and plugin metadata. * * @author Janis Elsts * @copyright 2016 * @access public */ abstract class Puc_v4p11_Metadata { /** * Create an instance of this class from a JSON document. * * @abstract * @param string $json * @return self */ public static function fromJson(/** @noinspection PhpUnusedParameterInspection */ $json) { throw new LogicException('The ' . __METHOD__ . ' method must be implemented by subclasses'); } /** * @param string $json * @param self $target * @return bool */ protected static function createFromJson($json, $target) { /** @var StdClass $apiResponse */ $apiResponse = json_decode($json); if ( empty($apiResponse) || !is_object($apiResponse) ){ $errorMessage = "Failed to parse update metadata. Try validating your .json file with http://jsonlint.com/"; do_action('puc_api_error', new WP_Error('puc-invalid-json', $errorMessage)); trigger_error($errorMessage, E_USER_NOTICE); return false; } $valid = $target->validateMetadata($apiResponse); if ( is_wp_error($valid) ){ do_action('puc_api_error', $valid); trigger_error($valid->get_error_message(), E_USER_NOTICE); return false; } foreach(get_object_vars($apiResponse) as $key => $value){ $target->$key = $value; } return true; } /** * No validation by default! Subclasses should check that the required fields are present. * * @param StdClass $apiResponse * @return bool|WP_Error */ protected function validateMetadata(/** @noinspection PhpUnusedParameterInspection */ $apiResponse) { return true; } /** * Create a new instance by copying the necessary fields from another object. * * @abstract * @param StdClass|self $object The source object. * @return self The new copy. */ public static function fromObject(/** @noinspection PhpUnusedParameterInspection */ $object) { throw new LogicException('The ' . __METHOD__ . ' method must be implemented by subclasses'); } /** * Create an instance of StdClass that can later be converted back to an * update or info container. Useful for serialization and caching, as it * avoids the "incomplete object" problem if the cached value is loaded * before this class. * * @return StdClass */ public function toStdClass() { $object = new stdClass(); $this->copyFields($this, $object); return $object; } /** * Transform the metadata into the format used by WordPress core. * * @return object */ abstract public function toWpFormat(); /** * Copy known fields from one object to another. * * @param StdClass|self $from * @param StdClass|self $to */ protected function copyFields($from, $to) { $fields = $this->getFieldNames(); if ( property_exists($from, 'slug') && !empty($from->slug) ) { //Let plugins add extra fields without having to create subclasses. $fields = apply_filters($this->getPrefixedFilter('retain_fields') . '-' . $from->slug, $fields); } foreach ($fields as $field) { if ( property_exists($from, $field) ) { $to->$field = $from->$field; } } } /** * @return string[] */ protected function getFieldNames() { return array(); } /** * @param string $tag * @return string */ protected function getPrefixedFilter($tag) { return 'puc_' . $tag; } } endif;