From 4463768baed036b487d473a60b30f0c314ee1673 Mon Sep 17 00:00:00 2001
From: Craig Andrews <candrews@integralblue.com>
Date: Thu, 19 Nov 2009 12:00:25 -0500
Subject: tobyink's location RDF patch

---
 lib/location.php  | 24 ++++++++++++++++++++++++
 lib/rssaction.php | 12 ++++++++++++
 2 files changed, 36 insertions(+)

(limited to 'lib')

diff --git a/lib/location.php b/lib/location.php
index bbfc15a36..191550d6d 100644
--- a/lib/location.php
+++ b/lib/location.php
@@ -52,6 +52,7 @@ class Location
     public  $location_id;
     public  $location_ns;
     private $_url;
+    private $_rdfurl;
 
     var $names = array();
 
@@ -185,4 +186,27 @@ class Location
 
         return $url;
     }
+
+    /**
+     * Get an URL for this location, suitable for embedding in RDF
+     *
+     * @return string URL for this location or NULL
+     */
+
+    function getRdfURL()
+    {
+        // Keep one cached
+
+        if (is_string($this->_rdfurl)) {
+            return $this->_rdfurl;
+        }
+
+        $url = null;
+
+        Event::handle('LocationRdfUrl', array($this, &$url));
+
+        $this->_rdfurl = $url;
+
+        return $url;
+    }
 }
diff --git a/lib/rssaction.php b/lib/rssaction.php
index faf6bec7d..cd4c8b51c 100644
--- a/lib/rssaction.php
+++ b/lib/rssaction.php
@@ -244,6 +244,16 @@ class Rss10Action extends Action
         $this->element('dc:creator', null, ($profile->fullname) ? $profile->fullname : $profile->nickname);
         $this->element('foaf:maker', array('rdf:resource' => $creator_uri));
         $this->element('sioc:has_creator', array('rdf:resource' => $creator_uri.'#acct'));
+        $location = $notice->getLocation();
+        if ($location && isset($location->lat) && isset($location->lon)) {
+            $location_uri = $location->getRdfURL();
+            $attrs = array('geo:lat' => $location->lat,
+                'geo:long' => $location->lon);
+            if (strlen($location_uri)) {
+                $attrs['rdf:resource'] = $location_uri;
+            }
+            $this->element('statusnet:origin', $attrs);
+        }
         $this->element('statusnet:postIcon', array('rdf:resource' => $profile->avatarUrl()));
         $this->element('cc:licence', array('rdf:resource' => common_config('license', 'url')));
         if ($notice->reply_to) {
@@ -354,6 +364,8 @@ class Rss10Action extends Action
                                               'http://rdfs.org/sioc/types#',
                                               'xmlns:rdfs' =>
                                               'http://www.w3.org/2000/01/rdf-schema#',
+                                              'xmlns:geo' =>
+                                              'http://www.w3.org/2003/01/geo/wgs84_pos#',
                                               'xmlns:statusnet' =>
                                               'http://status.net/ont/',
                                               'xmlns' => 'http://purl.org/rss/1.0/'));
-- 
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