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<?php
declare(strict_types=1);
namespace Laminas\Feed\Reader\Entry;
use DateTime;
use DOMElement;
use DOMXPath;
use Laminas\Feed\Reader;
use Laminas\Feed\Reader\Collection\Author as AuthorCollection;
use Laminas\Feed\Reader\Exception\RuntimeException;
use Laminas\Feed\Reader\Extension\Atom\Entry;
use Laminas\Feed\Reader\Extension\DublinCore\Entry as DublinCoreEntry;
use Laminas\Feed\Reader\Extension\Thread\Entry as ThreadEntry;
use function array_key_exists;
use function count;
use function is_array;
use function is_string;
class Atom extends AbstractEntry implements EntryInterface
{
/**
* XPath query
*
* @var string
*/
protected $xpathQuery = '';
/**
* @param int $entryKey
* @param null|string $type
*/
public function __construct(DOMElement $entry, $entryKey, $type = null)
{
parent::__construct($entry, $entryKey, $type);
// Everyone by now should know XPath indices start from 1 not 0
$this->xpathQuery = '//atom:entry[' . ($this->entryKey + 1) . ']';
$manager = Reader\Reader::getExtensionManager();
$extensions = ['Atom\Entry', 'Thread\Entry', 'DublinCore\Entry'];
foreach ($extensions as $name) {
$extension = $manager->get($name);
$extension->setEntryElement($entry);
$extension->setEntryKey($entryKey);
$extension->setType($type);
$this->extensions[$name] = $extension;
}
}
/**
* @inheritDoc
* @param int $index
* @return null|array<string, string>
*/
public function getAuthor($index = 0)
{
$authors = $this->getAuthors();
return isset($authors[$index]) && is_array($authors[$index])
? $authors[$index]
: null;
}
/**
* Get an array with feed authors
*
* @return AuthorCollection
*/
public function getAuthors()
{
if (array_key_exists('authors', $this->data)) {
return $this->data['authors'];
}
$people = $this->getAtomExtension()->getAuthors();
$this->data['authors'] = $people;
return $this->data['authors'];
}
/**
* Get the entry content
*
* @return string
*/
public function getContent()
{
if (array_key_exists('content', $this->data)) {
return $this->data['content'];
}
$content = $this->getAtomExtension()->getContent();
$this->data['content'] = $content;
return $this->data['content'];
}
/**
* Get the entry creation date
*
* @return null|DateTime
*/
public function getDateCreated()
{
if (array_key_exists('datecreated', $this->data)) {
return $this->data['datecreated'];
}
$dateCreated = $this->getAtomExtension()->getDateCreated();
$this->data['datecreated'] = $dateCreated;
return $this->data['datecreated'];
}
/**
* Get the entry modification date
*
* @return null|DateTime
*/
public function getDateModified()
{
if (array_key_exists('datemodified', $this->data)) {
return $this->data['datemodified'];
}
$dateModified = $this->getAtomExtension()->getDateModified();
$this->data['datemodified'] = $dateModified;
return $this->data['datemodified'];
}
/**
* Get the entry description
*
* @return string
*/
public function getDescription()
{
if (array_key_exists('description', $this->data)) {
return $this->data['description'];
}
$description = $this->getAtomExtension()->getDescription();
$this->data['description'] = $description;
return $this->data['description'];
}
/**
* Get the entry enclosure
*
* @return null|object{href: string, length: int, type: string}
*/
public function getEnclosure()
{
if (array_key_exists('enclosure', $this->data)) {
return $this->data['enclosure'];
}
$enclosure = $this->getAtomExtension()->getEnclosure();
$this->data['enclosure'] = $enclosure;
return $this->data['enclosure'];
}
/**
* Get the entry ID
*
* @return string
*/
public function getId()
{
if (array_key_exists('id', $this->data)) {
return $this->data['id'];
}
$id = $this->getAtomExtension()->getId();
$this->data['id'] = $id;
return $this->data['id'];
}
/**
* Get a specific link
*
* @param int $index
* @return null|string
*/
public function getLink($index = 0)
{
if (! array_key_exists('links', $this->data)) {
$this->getLinks();
}
return isset($this->data['links'][$index]) && is_string($this->data['links'][$index])
? $this->data['links'][$index]
: null;
}
/**
* Get all links
*
* @return array
*/
public function getLinks()
{
if (array_key_exists('links', $this->data)) {
return $this->data['links'];
}
$links = $this->getAtomExtension()->getLinks();
$this->data['links'] = $links;
return $this->data['links'];
}
/**
* Get a permalink to the entry
*
* @return string
*/
public function getPermalink()
{
return $this->getLink(0);
}
/**
* Get the entry title
*
* @return string
*/
public function getTitle()
{
if (array_key_exists('title', $this->data)) {
return $this->data['title'];
}
$title = $this->getAtomExtension()->getTitle();
$this->data['title'] = $title;
return $this->data['title'];
}
/**
* Get the number of comments/replies for current entry
*
* @return int
*/
public function getCommentCount()
{
if (array_key_exists('commentcount', $this->data)) {
return $this->data['commentcount'];
}
$commentcount = $this->getThreadExtension()->getCommentCount();
if (! $commentcount) {
$commentcount = $this->getAtomExtension()->getCommentCount();
}
$this->data['commentcount'] = $commentcount;
return $this->data['commentcount'];
}
/**
* Returns a URI pointing to the HTML page where comments can be made on this entry
*
* @return string
*/
public function getCommentLink()
{
if (array_key_exists('commentlink', $this->data)) {
return $this->data['commentlink'];
}
$commentlink = $this->getAtomExtension()->getCommentLink();
$this->data['commentlink'] = $commentlink;
return $this->data['commentlink'];
}
/**
* Returns a URI pointing to a feed of all comments for this entry
*
* @return string
*/
public function getCommentFeedLink()
{
if (array_key_exists('commentfeedlink', $this->data)) {
return $this->data['commentfeedlink'];
}
$commentfeedlink = $this->getAtomExtension()->getCommentFeedLink();
$this->data['commentfeedlink'] = $commentfeedlink;
return $this->data['commentfeedlink'];
}
/**
* Get category data as a Reader\Reader_Collection_Category object
*
* @return Reader\Collection\Category
*/
public function getCategories()
{
if (array_key_exists('categories', $this->data)) {
return $this->data['categories'];
}
$categoryCollection = $this->getAtomExtension()->getCategories();
if (count($categoryCollection) === 0) {
$categoryCollection = $this->getDublinCoreExtension()->getCategories();
}
$this->data['categories'] = $categoryCollection;
return $this->data['categories'];
}
/**
* Get source feed metadata from the entry
*
* @return null|Reader\Feed\Atom\Source
*/
public function getSource()
{
if (array_key_exists('source', $this->data)) {
return $this->data['source'];
}
$source = $this->getAtomExtension()->getSource();
$this->data['source'] = $source;
return $this->data['source'];
}
/**
* Set the XPath query (incl. on all Extensions)
*
* @return void
*/
public function setXpath(DOMXPath $xpath)
{
parent::setXpath($xpath);
foreach ($this->extensions as $extension) {
$extension->setXpath($this->xpath);
}
}
private function getAtomExtension(): Entry
{
$extension = $this->getExtension('Atom');
if (! $extension instanceof Entry) {
throw new RuntimeException('Unable to retrieve Atom entry extension');
}
return $extension;
}
private function getDublinCoreExtension(): DublinCoreEntry
{
$extension = $this->getExtension('DublinCore');
if (! $extension instanceof DublinCoreEntry) {
throw new RuntimeException('Unable to retrieve DublinCore entry extension');
}
return $extension;
}
private function getThreadExtension(): ThreadEntry
{
$extension = $this->getExtension('Thread');
if (! $extension instanceof ThreadEntry) {
throw new RuntimeException('Unable to retrieve Thread entry extension');
}
return $extension;
}
}