134 lines
3.4 KiB
PHP
134 lines
3.4 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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const MIME_TYPE = 'application/json';
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const VENDOR_EXCLUDES = array(
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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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$urlPrefix = (isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] == 'on') ? 'https://' : 'http://';
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$urlHost = (isset($_SERVER['HTTP_HOST'])) ? $_SERVER['HTTP_HOST'] : '';
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$urlPath = (isset($_SERVER['PATH_INFO'])) ? $_SERVER['PATH_INFO'] : '';
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$urlRequest = (isset($_SERVER['REQUEST_URI'])) ? $_SERVER['REQUEST_URI'] : '';
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$extraInfos = $this->getExtraInfos();
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$data = array(
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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 = array();
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foreach ($this->getItems() as $item) {
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$entry = array();
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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 = $this->sanitizeHtml($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'] = array(
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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 ($this->isHTML($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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$entry['attachments'] = array();
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foreach ($entryEnclosures as $enclosure) {
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$entry['attachments'][] = array(
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'url' => $enclosure,
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'mime_type' => getMimeType($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'] = array();
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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 . $entryContent);
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$items[] = $entry;
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}
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$data['items'] = $items;
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$toReturn = json_encode($data, JSON_PRETTY_PRINT);
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// Remove invalid non-UTF8 characters
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ini_set('mbstring.substitute_character', 'none');
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$toReturn = mb_convert_encoding($toReturn, $this->getCharset(), 'UTF-8');
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return $toReturn;
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}
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public function display(){
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$this
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->setContentType(self::MIME_TYPE . '; charset=' . $this->getCharset())
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->callContentType();
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return parent::display();
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}
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private function isHTML($text) {
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return (strlen(strip_tags($text)) != strlen($text));
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}
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}
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