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<?php
class FeedItem_Atom extends FeedItem_Common {
const NS_XML = "http://www.w3.org/XML/1998/namespace";
function get_id() {
$id = $this->elem->getElementsByTagName("id")->item(0);
if ($id) {
return $id->nodeValue;
} else {
return clean($this->get_link());
}
}
function get_date() {
$updated = $this->elem->getElementsByTagName("updated")->item(0);
if ($updated) {
return strtotime($updated->nodeValue);
}
$published = $this->elem->getElementsByTagName("published")->item(0);
if ($published) {
return strtotime($published->nodeValue);
}
$date = $this->xpath->query("dc:date", $this->elem)->item(0);
if ($date) {
return strtotime($date->nodeValue);
}
}
function get_link() {
$links = $this->elem->getElementsByTagName("link");
foreach ($links as $link) {
if ($link && $link->hasAttribute("href") &&
(!$link->hasAttribute("rel")
|| $link->getAttribute("rel") == "alternate"
|| $link->getAttribute("rel") == "standout")) {
$base = $this->xpath->evaluate("string(ancestor-or-self::*[@xml:base][1]/@xml:base)", $link);
if ($base)
return rewrite_relative_url($base, clean(trim($link->getAttribute("href"))));
else
return clean(trim($link->getAttribute("href")));
}
}
}
function get_title() {
$title = $this->elem->getElementsByTagName("title")->item(0);
if ($title) {
return clean(trim($title->nodeValue));
}
}
function get_content() {
$content = $this->elem->getElementsByTagName("content")->item(0);
if ($content) {
if ($content->hasAttribute('type')) {
if ($content->getAttribute('type') == 'xhtml') {
for ($i = 0; $i < $content->childNodes->length; $i++) {
$child = $content->childNodes->item($i);
if ($child->hasChildNodes()) {
return $this->doc->saveHTML($child);
}
}
}
}
return $this->subtree_or_text($content);
}
}
function get_description() {
$content = $this->elem->getElementsByTagName("summary")->item(0);
if ($content) {
if ($content->hasAttribute('type')) {
if ($content->getAttribute('type') == 'xhtml') {
for ($i = 0; $i < $content->childNodes->length; $i++) {
$child = $content->childNodes->item($i);
if ($child->hasChildNodes()) {
return $this->doc->saveHTML($child);
}
}
}
}
return $this->subtree_or_text($content);
}
}
function get_categories() {
$categories = $this->elem->getElementsByTagName("category");
$cats = [];
foreach ($categories as $cat) {
if ($cat->hasAttribute("term"))
array_push($cats, $cat->getAttribute("term"));
}
$categories = $this->xpath->query("dc:subject", $this->elem);
foreach ($categories as $cat) {
array_push($cats, $cat->nodeValue);
}
return $this->normalize_categories($cats);
}
function get_enclosures() {
$links = $this->elem->getElementsByTagName("link");
$encs = array();
foreach ($links as $link) {
if ($link && $link->hasAttribute("href") && $link->hasAttribute("rel")) {
if ($link->getAttribute("rel") == "enclosure") {
$enc = new FeedEnclosure();
$enc->type = clean($link->getAttribute("type"));
$enc->link = clean($link->getAttribute("href"));
$enc->length = clean($link->getAttribute("length"));
array_push($encs, $enc);
}
}
}
$encs = array_merge($encs, parent::get_enclosures());
return $encs;
}
function get_language() {
$lang = $this->elem->getAttributeNS(self::NS_XML, "lang");
if (!empty($lang)) {
return clean($lang);
} else {
// Fall back to the language declared on the feed, if any.
foreach ($this->doc->childNodes as $child) {
if (method_exists($child, "getAttributeNS")) {
return clean($child->getAttributeNS(self::NS_XML, "lang"));
}
}
}
}
}
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