Rss-Bridge/formats/JsonFormat.php
LogMANOriginal 394149b114
core: Add item uid (#1017)
'uid' represents the unique id for a feed item. This item is null by
default and can be set to any string value. The provided string value
is always hashed to sha1 to make it the same length in all cases.

References #977, #1005
2019-02-03 20:56:41 +01:00

131 lines
3.4 KiB
PHP

<?php
/**
* JsonFormat - JSON Feed Version 1
* https://jsonfeed.org/version/1
*
* Validators:
* https://validator.jsonfeed.org
* https://github.com/vigetlabs/json-feed-validator
*/
class JsonFormat extends FormatAbstract {
const VENDOR_EXCLUDES = array(
'author',
'title',
'uri',
'timestamp',
'content',
'enclosures',
'categories',
'uid',
);
public function stringify(){
$urlPrefix = (isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] == 'on') ? 'https://' : 'http://';
$urlHost = (isset($_SERVER['HTTP_HOST'])) ? $_SERVER['HTTP_HOST'] : '';
$urlPath = (isset($_SERVER['PATH_INFO'])) ? $_SERVER['PATH_INFO'] : '';
$urlRequest = (isset($_SERVER['REQUEST_URI'])) ? $_SERVER['REQUEST_URI'] : '';
$extraInfos = $this->getExtraInfos();
$data = array(
'version' => 'https://jsonfeed.org/version/1',
'title' => (!empty($extraInfos['name'])) ? $extraInfos['name'] : $urlHost,
'home_page_url' => (!empty($extraInfos['uri'])) ? $extraInfos['uri'] : REPOSITORY,
'feed_url' => $urlPrefix . $urlHost . $urlRequest
);
if (!empty($extraInfos['icon'])) {
$data['icon'] = $extraInfos['icon'];
$data['favicon'] = $extraInfos['icon'];
}
$items = array();
foreach ($this->getItems() as $item) {
$entry = array();
$entryAuthor = $item->getAuthor();
$entryTitle = $item->getTitle();
$entryUri = $item->getURI();
$entryTimestamp = $item->getTimestamp();
$entryContent = $this->sanitizeHtml($item->getContent());
$entryEnclosures = $item->getEnclosures();
$entryCategories = $item->getCategories();
$vendorFields = $item->toArray();
foreach (self::VENDOR_EXCLUDES as $key) {
unset($vendorFields[$key]);
}
$entry['id'] = $item->getUid();
if (empty($entry['id'])) {
$entry['id'] = $entryUri;
}
if (!empty($entryTitle)) {
$entry['title'] = $entryTitle;
}
if (!empty($entryAuthor)) {
$entry['author'] = array(
'name' => $entryAuthor
);
}
if (!empty($entryTimestamp)) {
$entry['date_modified'] = gmdate(DATE_ATOM, $entryTimestamp);
}
if (!empty($entryUri)) {
$entry['url'] = $entryUri;
}
if (!empty($entryContent)) {
if ($this->isHTML($entryContent)) {
$entry['content_html'] = $entryContent;
} else {
$entry['content_text'] = $entryContent;
}
}
if (!empty($entryEnclosures)) {
$entry['attachments'] = array();
foreach ($entryEnclosures as $enclosure) {
$entry['attachments'][] = array(
'url' => $enclosure,
'mime_type' => getMimeType($enclosure)
);
}
}
if (!empty($entryCategories)) {
$entry['tags'] = array();
foreach ($entryCategories as $category) {
$entry['tags'][] = $category;
}
}
if (!empty($vendorFields)) {
$entry['_rssbridge'] = $vendorFields;
}
if (empty($entry['id']))
$entry['id'] = hash('sha1', $entryTitle . $entryContent);
$items[] = $entry;
}
$data['items'] = $items;
$toReturn = json_encode($data, JSON_PRETTY_PRINT);
// Remove invalid non-UTF8 characters
ini_set('mbstring.substitute_character', 'none');
$toReturn = mb_convert_encoding($toReturn, $this->getCharset(), 'UTF-8');
return $toReturn;
}
public function display(){
$this
->setContentType('application/json; charset=' . $this->getCharset())
->callContentType();
return parent::display();
}
private function isHTML($text) {
return (strlen(strip_tags($text)) != strlen($text));
}
}