mirror of https://github.com/danoloan10/rss-bridge
129 lines
4.0 KiB
PHP
129 lines
4.0 KiB
PHP
<?php
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/**
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* JsonFormat - JSON Feed Version 1
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* https://jsonfeed.org/version/1
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*
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* Validators:
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* https://validator.jsonfeed.org
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* https://github.com/vigetlabs/json-feed-validator
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*/
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class JsonFormat extends FormatAbstract
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{
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const MIME_TYPE = 'application/json';
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const VENDOR_EXCLUDES = [
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'author',
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'title',
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'uri',
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'timestamp',
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'content',
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'enclosures',
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'categories',
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'uid',
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];
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public function stringify()
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{
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$https = $_SERVER['HTTPS'] ?? null;
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$urlPrefix = $https === 'on' ? 'https://' : 'http://';
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$urlHost = $_SERVER['HTTP_HOST'] ?? '';
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$urlRequest = $_SERVER['REQUEST_URI'] ?? '';
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$extraInfos = $this->getExtraInfos();
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$data = [
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'version' => 'https://jsonfeed.org/version/1',
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'title' => (!empty($extraInfos['name'])) ? $extraInfos['name'] : $urlHost,
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'home_page_url' => (!empty($extraInfos['uri'])) ? $extraInfos['uri'] : REPOSITORY,
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'feed_url' => $urlPrefix . $urlHost . $urlRequest
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];
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if (!empty($extraInfos['icon'])) {
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$data['icon'] = $extraInfos['icon'];
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$data['favicon'] = $extraInfos['icon'];
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}
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$items = [];
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foreach ($this->getItems() as $item) {
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$entry = [];
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$entryAuthor = $item->getAuthor();
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$entryTitle = $item->getTitle();
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$entryUri = $item->getURI();
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$entryTimestamp = $item->getTimestamp();
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$entryContent = $item->getContent() ? sanitize_html($item->getContent()) : '';
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$entryEnclosures = $item->getEnclosures();
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$entryCategories = $item->getCategories();
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$vendorFields = $item->toArray();
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foreach (self::VENDOR_EXCLUDES as $key) {
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unset($vendorFields[$key]);
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}
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$entry['id'] = $item->getUid();
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if (empty($entry['id'])) {
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$entry['id'] = $entryUri;
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}
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if (!empty($entryTitle)) {
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$entry['title'] = $entryTitle;
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}
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if (!empty($entryAuthor)) {
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$entry['author'] = [
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'name' => $entryAuthor
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];
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}
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if (!empty($entryTimestamp)) {
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$entry['date_modified'] = gmdate(\DATE_ATOM, $entryTimestamp);
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}
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if (!empty($entryUri)) {
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$entry['url'] = $entryUri;
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}
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if (!empty($entryContent)) {
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if (is_html($entryContent)) {
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$entry['content_html'] = $entryContent;
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} else {
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$entry['content_text'] = $entryContent;
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}
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}
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if (!empty($entryEnclosures)) {
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$entry['attachments'] = [];
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foreach ($entryEnclosures as $enclosure) {
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$entry['attachments'][] = [
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'url' => $enclosure,
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'mime_type' => parse_mime_type($enclosure)
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];
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}
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}
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if (!empty($entryCategories)) {
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$entry['tags'] = [];
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foreach ($entryCategories as $category) {
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$entry['tags'][] = $category;
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}
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}
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if (!empty($vendorFields)) {
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$entry['_rssbridge'] = $vendorFields;
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}
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if (empty($entry['id'])) {
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$entry['id'] = hash('sha1', $entryTitle . $entryContent);
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}
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$items[] = $entry;
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}
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$data['items'] = $items;
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/**
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* The intention here is to discard non-utf8 byte sequences.
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* But the JSON_PARTIAL_OUTPUT_ON_ERROR also discards lots of other errors.
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* So consider this a hack.
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* Switch to JSON_INVALID_UTF8_IGNORE when PHP 7.2 is the latest platform requirement.
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*/
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$json = json_encode($data, \JSON_PRETTY_PRINT | \JSON_PARTIAL_OUTPUT_ON_ERROR);
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return $json;
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}
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}
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