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<?php
class FeedItem_RSS extends FeedItem_Common {
function get_id(): string {
$id = $this->elem->getElementsByTagName("guid")->item(0);
if ($id) {
return clean($id->nodeValue);
} else {
return clean($this->get_link());
}
}
/**
* @return int|false a timestamp on success, false otherwise
*/
function get_date() {
$pubDate = $this->elem->getElementsByTagName("pubDate")->item(0);
if ($pubDate) {
return strtotime($pubDate->nodeValue ?? '');
}
$date = $this->xpath->query("dc:date", $this->elem)->item(0);
if ($date) {
return strtotime($date->nodeValue ?? '');
}
// consistent with strtotime failing to parse
return false;
}
function get_link(): string {
$links = $this->xpath->query("atom:link", $this->elem);
foreach ($links as $link) {
if ($link && $link->hasAttribute("href") &&
(!$link->hasAttribute("rel")
|| $link->getAttribute("rel") == "alternate"
|| $link->getAttribute("rel") == "standout")) {
return clean(trim($link->getAttribute("href")));
}
}
/** @var DOMElement|null */
$link = $this->elem->getElementsByTagName("guid")->item(0);
if ($link && $link->hasAttributes() && $link->getAttribute("isPermaLink") == "true") {
return clean(trim($link->nodeValue));
}
$link = $this->elem->getElementsByTagName("link")->item(0);
if ($link) {
return clean(trim($link->nodeValue));
}
return '';
}
function get_title(): string {
$title = $this->xpath->query("title", $this->elem)->item(0);
if ($title) {
return clean(trim($title->nodeValue));
}
// if the document has a default namespace then querying for
// title would fail because of reasons so let's try the old way
$title = $this->elem->getElementsByTagName("title")->item(0);
if ($title) {
return clean(trim($title->nodeValue));
}
return '';
}
function get_content(): string {
/** @var DOMElement|null */
$contentA = $this->xpath->query("content:encoded", $this->elem)->item(0);
/** @var DOMElement|null */
$contentB = $this->elem->getElementsByTagName("description")->item(0);
if ($contentA && $contentB) {
$resultA = $this->subtree_or_text($contentA);
$resultB = $this->subtree_or_text($contentB);
return mb_strlen($resultA) > mb_strlen($resultB) ? $resultA : $resultB;
}
if ($contentA) {
return $this->subtree_or_text($contentA);
}
if ($contentB) {
return $this->subtree_or_text($contentB);
}
return '';
}
function get_description(): string {
$summary = $this->elem->getElementsByTagName("description")->item(0);
if ($summary) {
return $summary->nodeValue;
}
return '';
}
/**
* @return array<int, string>
*/
function get_categories(): array {
$categories = $this->elem->getElementsByTagName("category");
$cats = [];
foreach ($categories as $cat) {
array_push($cats, $cat->nodeValue);
}
$categories = $this->xpath->query("dc:subject", $this->elem);
foreach ($categories as $cat) {
array_push($cats, $cat->nodeValue);
}
return $this->normalize_categories($cats);
}
/**
* @return array<int, FeedEnclosure>
*/
function get_enclosures(): array {
$enclosures = $this->elem->getElementsByTagName("enclosure");
$encs = array();
foreach ($enclosures as $enclosure) {
$enc = new FeedEnclosure();
$enc->type = clean($enclosure->getAttribute("type"));
$enc->link = clean($enclosure->getAttribute("url"));
$enc->length = clean($enclosure->getAttribute("length"));
$enc->height = clean($enclosure->getAttribute("height"));
$enc->width = clean($enclosure->getAttribute("width"));
array_push($encs, $enc);
}
array_push($encs, ...parent::get_enclosures());
return $encs;
}
function get_language(): string {
$languages = $this->doc->getElementsByTagName('language');
if (count($languages) == 0) {
return "";
}
return clean($languages[0]->textContent);
}
}
|
