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<?php
/**
* Zend Framework (http://framework.zend.com/)
*
* @link http://github.com/zendframework/zf2 for the canonical source repository
* @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
namespace Zend\Feed\Reader\Extension\DublinCore;
use DateTime;
use Zend\Feed\Reader;
use Zend\Feed\Reader\Collection;
use Zend\Feed\Reader\Extension;
class Entry extends Extension\AbstractEntry
{
/**
* Get an author entry
*
* @param int $index
* @return string
*/
public function getAuthor($index = 0)
{
$authors = $this->getAuthors();
if (isset($authors[$index])) {
return $authors[$index];
}
return null;
}
/**
* Get an array with feed authors
*
* @return array
*/
public function getAuthors()
{
if (array_key_exists('authors', $this->data)) {
return $this->data['authors'];
}
$authors = array();
$list = $this->getXpath()->evaluate($this->getXpathPrefix() . '//dc11:creator');
if (!$list->length) {
$list = $this->getXpath()->evaluate($this->getXpathPrefix() . '//dc10:creator');
}
if (!$list->length) {
$list = $this->getXpath()->evaluate($this->getXpathPrefix() . '//dc11:publisher');
if (!$list->length) {
$list = $this->getXpath()->evaluate($this->getXpathPrefix() . '//dc10:publisher');
}
}
if ($list->length) {
foreach ($list as $author) {
$authors[] = array(
'name' => $author->nodeValue
);
}
$authors = new Collection\Author(
Reader\Reader::arrayUnique($authors)
);
} else {
$authors = null;
}
$this->data['authors'] = $authors;
return $this->data['authors'];
}
/**
* Get categories (subjects under DC)
*
* @return Collection\Category
*/
public function getCategories()
{
if (array_key_exists('categories', $this->data)) {
return $this->data['categories'];
}
$list = $this->getXpath()->evaluate($this->getXpathPrefix() . '//dc11:subject');
if (!$list->length) {
$list = $this->getXpath()->evaluate($this->getXpathPrefix() . '//dc10:subject');
}
if ($list->length) {
$categoryCollection = new Collection\Category;
foreach ($list as $category) {
$categoryCollection[] = array(
'term' => $category->nodeValue,
'scheme' => null,
'label' => $category->nodeValue,
);
}
} else {
$categoryCollection = new Collection\Category;
}
$this->data['categories'] = $categoryCollection;
return $this->data['categories'];
}
/**
* Get the entry content
*
* @return string
*/
public function getContent()
{
return $this->getDescription();
}
/**
* Get the entry description
*
* @return string
*/
public function getDescription()
{
if (array_key_exists('description', $this->data)) {
return $this->data['description'];
}
$description = null;
$description = $this->getXpath()->evaluate('string(' . $this->getXpathPrefix() . '/dc11:description)');
if (!$description) {
$description = $this->getXpath()->evaluate('string(' . $this->getXpathPrefix() . '/dc10:description)');
}
if (!$description) {
$description = null;
}
$this->data['description'] = $description;
return $this->data['description'];
}
/**
* Get the entry ID
*
* @return string
*/
public function getId()
{
if (array_key_exists('id', $this->data)) {
return $this->data['id'];
}
$id = null;
$id = $this->getXpath()->evaluate('string(' . $this->getXpathPrefix() . '/dc11:identifier)');
if (!$id) {
$id = $this->getXpath()->evaluate('string(' . $this->getXpathPrefix() . '/dc10:identifier)');
}
$this->data['id'] = $id;
return $this->data['id'];
}
/**
* Get the entry title
*
* @return string
*/
public function getTitle()
{
if (array_key_exists('title', $this->data)) {
return $this->data['title'];
}
$title = null;
$title = $this->getXpath()->evaluate('string(' . $this->getXpathPrefix() . '/dc11:title)');
if (!$title) {
$title = $this->getXpath()->evaluate('string(' . $this->getXpathPrefix() . '/dc10:title)');
}
if (!$title) {
$title = null;
}
$this->data['title'] = $title;
return $this->data['title'];
}
/**
*
*
* @return DateTime|null
*/
public function getDate()
{
if (array_key_exists('date', $this->data)) {
return $this->data['date'];
}
$d = null;
$date = $this->getXpath()->evaluate('string(' . $this->getXpathPrefix() . '/dc11:date)');
if (!$date) {
$date = $this->getXpath()->evaluate('string(' . $this->getXpathPrefix() . '/dc10:date)');
}
if ($date) {
$d = new DateTime($date);
}
$this->data['date'] = $d;
return $this->data['date'];
}
/**
* Register DC namespaces
*
* @return void
*/
protected function registerNamespaces()
{
$this->getXpath()->registerNamespace('dc10', 'http://purl.org/dc/elements/1.0/');
$this->getXpath()->registerNamespace('dc11', 'http://purl.org/dc/elements/1.1/');
}
}