/**
* \private
*
* Helper function to create RSS XML elements.
*
* This is only for internal use.
*
* \param $obj
* The object from which to retrieve the value
*
* \param $property
* The property name
*
* \param $tagname
* The XML tag name
*
* \param $status
* Status of the element
*
* \param $type
* Data type of the element
*
* \return
* An AnewtXMLDomElement instance, or null.
*/
public static function _build_rss_element($obj, $property, $tagname, $status, $type)
{
if (!$obj->_isset($property)) {
/* If an optional element not provided it's not a problem... */
if ($status == ANEWT_RSS_ELEMENT_STATUS_OPTIONAL) {
return null;
}
/* ...but required means required! */
throw new AnewtException('AnewtRssItem::render(): Required property "%s" not set.', $property);
}
$value = $obj->_get($property);
switch ($type) {
case ANEWT_RSS_ELEMENT_TYPE_STRING:
assert('is_string($value);');
break;
case ANEWT_RSS_ELEMENT_TYPE_CANONICAL_URL:
assert('is_string($value);');
if (str_has_prefix($value, '/')) {
/* Fixup relative URL's without a http://hostname.ext/ part */
$value = AnewtRequest::canonical_base_url() . $value;
}
break;
case ANEWT_RSS_ELEMENT_TYPE_INTEGER:
assert('is_int($value);');
$value = (string) $value;
break;
case ANEWT_RSS_ELEMENT_TYPE_DATE:
assert('$value instanceof AnewtDateTimeAtom;');
$value = AnewtDateTime::rfc2822($value);
break;
default:
assert('false; // not reached');
break;
}
$element = new AnewtXMLDomElement($tagname);
$element->append_child(new AnewtXMLDomText($value));
return $element;
}
