Automated build for v0.01

classes/feeditem/common.php

@@ -0,0 +1,162 @@
+<?php
+abstract class FeedItem_Common extends FeedItem {
+	protected $elem;
+	protected $xpath;
+	protected $doc;
+
+	function __construct($elem, $doc, $xpath) {
+		$this->elem = $elem;
+		$this->xpath = $xpath;
+		$this->doc = $doc;
+
+		try {
+
+			$source = $elem->getElementsByTagName("source")->item(0);
+
+			// we don't need <source> element
+			if ($source)
+				$elem->removeChild($source);
+		} catch (DOMException $e) {
+			//
+		}
+	}
+
+	function get_element() {
+		return $this->elem;
+	}
+
+	function get_author() {
+		$author = $this->elem->getElementsByTagName("author")->item(0);
+
+		if ($author) {
+			$name = $author->getElementsByTagName("name")->item(0);
+
+			if ($name) return clean($name->nodeValue);
+
+			$email = $author->getElementsByTagName("email")->item(0);
+
+			if ($email) return clean($email->nodeValue);
+
+			if ($author->nodeValue)
+				return clean($author->nodeValue);
+		}
+
+		$author = $this->xpath->query("dc:creator", $this->elem)->item(0);
+
+		if ($author) {
+			return clean($author->nodeValue);
+		}
+	}
+
+	function get_comments_url() {
+		//RSS only. Use a query here to avoid namespace clashes (e.g. with slash).
+		//might give a wrong result if a default namespace was declared (possible with XPath 2.0)
+		$com_url = $this->xpath->query("comments", $this->elem)->item(0);
+
+		if ($com_url)
+			return clean($com_url->nodeValue);
+
+		//Atom Threading Extension (RFC 4685) stuff. Could be used in RSS feeds, so it's in common.
+		//'text/html' for type is too restrictive?
+		$com_url = $this->xpath->query("atom:link[@rel='replies' and contains(@type,'text/html')]/@href", $this->elem)->item(0);
+
+		if ($com_url)
+			return clean($com_url->nodeValue);
+	}
+
+	function get_comments_count() {
+		//also query for ATE stuff here
+		$query = "slash:comments|thread:total|atom:link[@rel='replies']/@thread:count";
+		$comments = $this->xpath->query($query, $this->elem)->item(0);
+
+		if ($comments) {
+			return clean($comments->nodeValue);
+		}
+	}
+
+	// this is common for both Atom and RSS types and deals with various media: elements
+	function get_enclosures() {
+		$encs = [];
+
+		$enclosures = $this->xpath->query("media:content", $this->elem);
+
+		foreach ($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"));
+
+			$medium = clean($enclosure->getAttribute("medium"));
+			if (!$enc->type && $medium) {
+				$enc->type = strtolower("$medium/generic");
+			}
+
+			$desc = $this->xpath->query("media:description", $enclosure)->item(0);
+			if ($desc) $enc->title = clean($desc->nodeValue);
+
+			array_push($encs, $enc);
+		}
+
+		$enclosures = $this->xpath->query("media:group", $this->elem);
+
+		foreach ($enclosures as $enclosure) {
+			$enc = new FeedEnclosure();
+
+			$content = $this->xpath->query("media:content", $enclosure)->item(0);
+
+			if ($content) {
+				$enc->type = clean($content->getAttribute("type"));
+				$enc->link = clean($content->getAttribute("url"));
+				$enc->length = clean($content->getAttribute("length"));
+				$enc->height = clean($content->getAttribute("height"));
+				$enc->width = clean($content->getAttribute("width"));
+
+				$medium = clean($content->getAttribute("medium"));
+				if (!$enc->type && $medium) {
+					$enc->type = strtolower("$medium/generic");
+				}
+
+				$desc = $this->xpath->query("media:description", $content)->item(0);
+				if ($desc) {
+					$enc->title = clean($desc->nodeValue);
+				} else {
+					$desc = $this->xpath->query("media:description", $enclosure)->item(0);
+					if ($desc) $enc->title = clean($desc->nodeValue);
+				}
+
+				array_push($encs, $enc);
+			}
+		}
+
+		$enclosures = $this->xpath->query("media:thumbnail", $this->elem);
+
+		foreach ($enclosures as $enclosure) {
+			$enc = new FeedEnclosure();
+
+			$enc->type = "image/generic";
+			$enc->link = clean($enclosure->getAttribute("url"));
+			$enc->height = clean($enclosure->getAttribute("height"));
+			$enc->width = clean($enclosure->getAttribute("width"));
+
+			array_push($encs, $enc);
+		}
+
+		return $encs;
+	}
+
+	function count_children($node) {
+		return $node->getElementsByTagName("*")->length;
+	}
+
+	function subtree_or_text($node) {
+		if ($this->count_children($node) == 0) {
+			return $node->nodeValue;
+		} else {
+			return $node->c14n();
+		}
+	}
+
+}