Parser::parse_microformats( string $data, string $url ): true

433    private function parse_microformats(string &$data, string $url): bool434    {435        // For PHPStan, we already check that in call site.436        \assert(function_exists('Mf2\parse'));437        \assert(function_exists('Mf2\fetch'));438        $feed_title = '';439        $feed_author = null;440        $author_cache = [];441        $items = [];442        $entries = [];443        $mf = \Mf2\parse($data, $url);444        // First look for an h-feed.445        $h_feed = [];446        foreach ($mf['items'] as $mf_item) {447            if (in_array('h-feed', $mf_item['type'])) {448                $h_feed = $mf_item;449                break;450            }451            // Also look for h-feed or h-entry in the children of each top level item.452            if (!isset($mf_item['children'][0]['type'])) {453                continue;454            }455            if (in_array('h-feed', $mf_item['children'][0]['type'])) {456                $h_feed = $mf_item['children'][0];457                // In this case the parent of the h-feed may be an h-card, so use it as458                // the feed_author.459                if (in_array('h-card', $mf_item['type'])) {460                    $feed_author = $mf_item;461                }462                break;463            } elseif (in_array('h-entry', $mf_item['children'][0]['type'])) {464                $entries = $mf_item['children'];465                // In this case the parent of the h-entry list may be an h-card, so use466                // it as the feed_author.467                if (in_array('h-card', $mf_item['type'])) {468                    $feed_author = $mf_item;469                }470                break;471            }472        }473        if (isset($h_feed['children'])) {474            $entries = $h_feed['children'];475            // Also set the feed title and store author from the h-feed if available.476            if (isset($mf['items'][0]['properties']['name'][0])) {477                $feed_title = $mf['items'][0]['properties']['name'][0];478            }479            if (isset($mf['items'][0]['properties']['author'][0])) {480                $feed_author = $mf['items'][0]['properties']['author'][0];481            }482        } elseif (count($entries) === 0) {483            $entries = $mf['items'];484        }485        for ($i = 0; $i < count($entries); $i++) {486            $entry = $entries[$i];487            if (in_array('h-entry', $entry['type'])) {488                $item = [];489                $title = '';490                $description = '';491                if (isset($entry['properties']['url'][0])) {492                    $link = $entry['properties']['url'][0];493                    if (isset($link['value'])) {494                        $link = $link['value'];495                    }496                    $item['link'] = [['data' => $link]];497                }498                if (isset($entry['properties']['uid'][0])) {499                    $guid = $entry['properties']['uid'][0];500                    if (isset($guid['value'])) {501                        $guid = $guid['value'];502                    }503                    $item['guid'] = [['data' => $guid]];504                }505                if (isset($entry['properties']['name'][0])) {506                    $title = $entry['properties']['name'][0];507                    if (isset($title['value'])) {508                        $title = $title['value'];509                    }510                    $item['title'] = [['data' => $title]];511                }512                if (isset($entry['properties']['author'][0]) || isset($feed_author)) {