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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;
use DOMDocument;
use DOMElement;
use DOMXPath;
use Zend\Feed\Reader;
abstract class AbstractEntry
{
/**
* Feed entry data
*
* @var array
*/
protected $data = array();
/**
* DOM document object
*
* @var DOMDocument
*/
protected $domDocument = null;
/**
* Entry instance
*
* @var DOMElement
*/
protected $entry = null;
/**
* Pointer to the current entry
*
* @var int
*/
protected $entryKey = 0;
/**
* XPath object
*
* @var DOMXPath
*/
protected $xpath = null;
/**
* XPath query
*
* @var string
*/
protected $xpathPrefix = '';
/**
* Set the entry DOMElement
*
* Has side effect of setting the DOMDocument for the entry.
*
* @param DOMElement $entry
* @return AbstractEntry
*/
public function setEntryElement(DOMElement $entry)
{
$this->entry = $entry;
$this->domDocument = $entry->ownerDocument;
return $this;
}
/**
* Get the entry DOMElement
*
* @return DOMElement
*/
public function getEntryElement()
{
return $this->entry;
}
/**
* Set the entry key
*
* @param string $entryKey
* @return AbstractEntry
*/
public function setEntryKey($entryKey)
{
$this->entryKey = $entryKey;
return $this;
}
/**
* Get the DOM
*
* @return DOMDocument
*/
public function getDomDocument()
{
return $this->domDocument;
}
/**
* Get the Entry's encoding
*
* @return string
*/
public function getEncoding()
{
$assumed = $this->getDomDocument()->encoding;
return $assumed;
}
/**
* Set the entry type
*
* Has side effect of setting xpath prefix
*
* @param string $type
* @return AbstractEntry
*/
public function setType($type)
{
if (null === $type) {
$this->data['type'] = null;
return $this;
}
$this->data['type'] = $type;
if ($type === Reader\Reader::TYPE_RSS_10
|| $type === Reader\Reader::TYPE_RSS_090
) {
$this->setXpathPrefix('//rss:item[' . ($this->entryKey + 1) . ']');
return $this;
}
if ($type === Reader\Reader::TYPE_ATOM_10
|| $type === Reader\Reader::TYPE_ATOM_03
) {
$this->setXpathPrefix('//atom:entry[' . ($this->entryKey + 1) . ']');
return $this;
}
$this->setXpathPrefix('//item[' . ($this->entryKey + 1) . ']');
return $this;
}
/**
* Get the entry type
*
* @return string
*/
public function getType()
{
$type = $this->data['type'];
if ($type === null) {
$type = Reader\Reader::detectType($this->getEntryElement(), true);
$this->setType($type);
}
return $type;
}
/**
* Set the XPath query
*
* @param DOMXPath $xpath
* @return AbstractEntry
*/
public function setXpath(DOMXPath $xpath)
{
$this->xpath = $xpath;
$this->registerNamespaces();
return $this;
}
/**
* Get the XPath query object
*
* @return DOMXPath
*/
public function getXpath()
{
if (!$this->xpath) {
$this->setXpath(new DOMXPath($this->getDomDocument()));
}
return $this->xpath;
}
/**
* Serialize the entry to an array
*
* @return array
*/
public function toArray()
{
return $this->data;
}
/**
* Get the XPath prefix
*
* @return string
*/
public function getXpathPrefix()
{
return $this->xpathPrefix;
}
/**
* Set the XPath prefix
*
* @param string $prefix
* @return AbstractEntry
*/
public function setXpathPrefix($prefix)
{
$this->xpathPrefix = $prefix;
return $this;
}
/**
* Register XML namespaces
*
* @return void
*/
abstract protected function registerNamespaces();
}