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85 lines
2.0 KiB
PHP
85 lines
2.0 KiB
PHP
<?php
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abstract class FeedItem_Common extends FeedItem {
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protected $elem;
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protected $xpath;
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protected $doc;
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function __construct($elem, $doc, $xpath) {
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$this->elem = $elem;
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$this->xpath = $xpath;
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$this->doc = $doc;
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try {
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$source = $elem->getElementsByTagName("source")->item(0);
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// we don't need <source> element
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if ($source)
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$elem->removeChild($source);
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} catch (DOMException $e) {
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//
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}
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}
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function get_author() {
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$author = $this->elem->getElementsByTagName("author")->item(0);
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if ($author) {
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$name = $author->getElementsByTagName("name")->item(0);
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if ($name) return $name->nodeValue;
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$email = $author->getElementsByTagName("email")->item(0);
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if ($email) return $email->nodeValue;
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if ($author->nodeValue)
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return $author->nodeValue;
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}
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$author = $this->xpath->query("dc:creator", $this->elem)->item(0);
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if ($author) {
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return $author->nodeValue;
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}
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}
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function get_comments_url() {
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//RSS only. Use a query here to avoid namespace clashes (e.g. with slash).
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//might give a wrong result if a default namespace was declared (possible with XPath 2.0)
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$com_url = $this->xpath->query("comments", $this->elem)->item(0);
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if($com_url)
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return $com_url->nodeValue;
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//Atom Threading Extension (RFC 4685) stuff. Could be used in RSS feeds, so it's in common.
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//'text/html' for type is too restrictive?
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$com_url = $this->xpath->query("atom:link[@rel='replies' and contains(@type,'text/html')]/@href", $this->elem)->item(0);
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if($com_url)
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return $com_url->nodeValue;
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}
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function get_comments_count() {
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//also query for ATE stuff here
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$query = "slash:comments|thread:total|atom:link[@rel='replies']/@thread:count";
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$comments = $this->xpath->query($query, $this->elem)->item(0);
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if ($comments) {
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return $comments->nodeValue;
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}
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}
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function count_children($node) {
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return $node->getElementsByTagName("*")->length;
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}
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function subtree_or_text($node) {
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if ($this->count_children($node) == 0) {
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return $node->nodeValue;
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} else {
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return $node->c14n();
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}
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}
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} |