test implementation for the most unnecessary thing ever: jsonfeed

classes/feeditem/json.php

@@ -0,0 +1,88 @@
+<?php
+class FeedItem_Json extends FeedItem_Common {
+
+	/* for JSON feed only $elem is passed which is the actual entry as an object */
+	function __construct($elem, $doc, $xpath) {
+		$this->elem = $elem;
+		$this->doc = $doc;
+	}
+
+	function get_id() {
+		return $this->elem->id;
+	}
+
+	function get_date() {
+		return isset($this->elem->date_published) ? strtotime($this->elem->date_published) : false;
+	}
+
+	function get_author() {
+		$author = false;
+
+		if (isset($this->author)) {
+			$author = $this->author;
+		} else if (isset($this->doc->author)) {
+			$author = $this->doc->author;
+		}
+
+		if ($author && $author->name) {
+			return $author->name;
+		}
+	}
+
+	function get_comments_url() {
+		return false;
+	}
+
+	function get_comments_count() {
+		return false;
+	}
+
+	function get_link() {
+		return isset($this->elem->url) ? $this->elem->url : false;
+	}
+
+	function get_title() {
+		return $this->elem->title;
+	}
+
+	function get_content() {
+		return isset($this->elem->content_html) ? $this->elem->content_html : $this->elem->content_text;
+	}
+
+	function get_description() {
+		return isset($this->elem->summary) ? $this->elem->summary : false;
+	}
+
+	function get_categories() {
+		$cats = array();
+
+		if (is_array($this->elem->tags)) {
+			foreach ($this->elem->tags as $cat) {
+				array_push($cats, trim($cat));
+			}
+		}
+
+		return $cats;
+	}
+
+	function get_enclosures() {
+		$encs = array();
+
+		if (is_array($this->elem->attachments)) {
+			foreach ($this->elem->attachments as $enclosure) {
+
+				$enc = new FeedEnclosure();
+
+				$enc->type = $enclosure["mime_type"];
+				$enc->link = $enclosure["url"];
+				@$enc->length = $enclosure["size_in_bytes"];
+
+				array_push($encs, $enc);
+
+			}
+		}
+
+		return $encs;
+	}
+
+}

classes/feedparser.php

@@ -3,15 +3,17 @@ class FeedParser {
 	private $doc;
 	private $error;
 	private $libxml_errors = array();
-	private $items;
+	private $items = array();
 	private $link;
 	private $title;
 	private $type;
 	private $xpath;
+	private $jsonobj;
 
 	const FEED_RDF = 0;
 	const FEED_RSS = 1;
 	const FEED_ATOM = 2;
+	const FEED_JSON = 3;
 
 	function normalize_encoding($data) {
 		if (preg_match('/^(<\?xml[\t\n\r ].*?encoding[\t\n\r ]*=[\t\n\r ]*["\'])(.+?)(["\'].*?\?>)/s', $data, $matches) === 1) {
@@ -28,6 +30,17 @@ class FeedParser {
 	}
 
 	function __construct($data) {
+		$this->jsonobj = @json_decode($data, false);
+
+		// not sure of a better solution to report parsing errors for both kinds of (potentially broken) content
+
+		if ($this->jsonobj) {
+			return;
+		} else if (!preg_match("/<(\\?xml|feed|channel|rdf|rss)/m", mb_substr($data, 0, 512))) {
+			$this->error = 'JSON error: ' . json_last_error_msg();
+			return;
+		}
+
 		libxml_use_internal_errors(true);
 		libxml_clear_errors();
 		$this->doc = new DOMDocument();
@@ -87,12 +100,22 @@ class FeedParser {
 			}
 		}
 		libxml_clear_errors();
-
-		$this->items = array();
 	}
 
 	function init() {
-		$root = $this->doc->firstChild;
+
+		if ($this->jsonobj) {
+			$this->type = $this::FEED_JSON;
+
+			$this->title = $this->jsonobj->title;
+			$this->link = $this->jsonobj->feed_url;
+
+			foreach ($this->jsonobj->items as $item) {
+				array_push($this->items, new FeedItem_Json($item, $this->jsonobj, false));
+			}
+
+		} else if ($this->doc) {
+
 			$xpath = new DOMXPath($this->doc);
 			$xpath->registerNamespace('atom', 'http://www.w3.org/2005/Atom');
 			$xpath->registerNamespace('atom03', 'http://purl.org/atom/ns#');
@@ -227,6 +250,8 @@ class FeedParser {
 			}
 		}
 
+	}
+
 	function format_error($error) {
 		if ($error) {
 			return sprintf("LibXML error %s at line %d (column %d): %s",

classes/rssutils.php

@@ -339,7 +339,7 @@ class RSSUtils {
 
 		$date_feed_processed = date('Y-m-d H:i');
 
-		$cache_filename = CACHE_DIR . "/simplepie/" . sha1($fetch_url) . ".xml";
+		$cache_filename = CACHE_DIR . "/simplepie/" . sha1($fetch_url);
 
 		$pluginhost = new PluginHost();
 		$pluginhost->set_debug($debug_enabled);