Automatic RSS feeds!

git-svn-id: https://code.elgg.org/elgg/trunk@1011 36083f99-b078-4883-b0ff-0f9b5a30f544

8 files changed, 244 insertions, 7 deletions

diff --git a/engine/lib/elgglib.php b/engine/lib/elgglib.php
index d559e5131..261dc60cc 100644
--- a/engine/lib/elgglib.php
+++ b/engine/lib/elgglib.php
@@ -187,6 +187,50 @@
 		}

 		

 	/**

+	 * Returns whether the specified view exists

+	 *

+	 * @param string $view The view name

+	 * @param string $viewtype The type of view

+	 * @return true|false Depending on success

+	 */

+		function elgg_view_exists($view, $viewtype = "") {

+			

+				global $CONFIG;

+			

+			// If we haven't been asked for a specific view, assume default

+			    if (empty($_SESSION['view'])) {

+			        $_SESSION['view'] = "default";

+			        

+			        // If we have a config default view for this site then use that instead of 'default'

+			        if (/*(is_installed()) && */(!empty($CONFIG->view)) && (trim($CONFIG->view)!=""))

+			        	$_SESSION['view'] = $CONFIG->view;

+			    }

+			    if (empty($viewtype) && is_callable('get_input'))

+			        $viewtype = get_input('view');

+			    if (empty($viewtype)) {

+			        $viewtype = $_SESSION['view'];

+			    }

+			    

+			    

+				if (!isset($CONFIG->views->locations[$view])) {

+		    		if (!isset($CONFIG->viewpath)) {

+						$location = dirname(dirname(dirname(__FILE__))) . "/views/";		    			

+		    		} else {

+		    			$location = $CONFIG->viewpath;

+		    		}

+		    	} else {

+		    		$location = $CONFIG->views->locations[$view];

+		    	}

+		    	

+		    	if (file_exists($location . "{$viewtype}/{$view}.php")) {

+		    		return true;

+		    	}

+		    	

+		    	return false;

+			

+		}

+		

+	/**

 	 * When given an entity, views it intelligently.

 	 * 

 	 * Expects a view to exist called entity-type/subtype, or for the entity to have a parameter

@@ -203,6 +247,9 @@
 	 */

 		function elgg_view_entity(ElggEntity $entity, $viewtype = "", $full = false, $bypass = true, $debug = false) {

 			

+			global $autofeed;

+			$autofeed = true;

+			

 			$view = $entity->view;

 			if (is_string($view)) {

 				return elgg_view($view,array('entity' => $entity), $viewtype, $bypass, $debug);

@@ -231,11 +278,17 @@
 			$subtype = $entity->getSubtype();

 			if (empty($subtype)) { $subtype = $entity_type; }

 

-			return elgg_view("{$entity_type}/{$subtype}",array(

+			if (elgg_view_exists("{$entity_type}/{$subtype}")) {

+				return elgg_view("{$entity_type}/{$subtype}",array(

+																	'entity' => $entity,

+																	'full' => $full

+																	), $viewtype, $bypass, $debug);

+			} else {

+				return elgg_view("{$entity_type}/default",array(

 																'entity' => $entity,

 																'full' => $full

 																), $viewtype, $bypass, $debug);

-			

+			}

 		}

 		

 	/**

@@ -303,9 +356,14 @@
 				$param_array['area' . $arg] = func_get_arg($arg);

 				$arg++;		

 			}

-			return elgg_view("canvas/layouts/{$layout}",$param_array);

+			if (elgg_view_exists("canvas/layouts/{$layout}")) {

+				return elgg_view("canvas/layouts/{$layout}",$param_array);

+			} else {

+				return elgg_view("canvas/default",$param_array);

+			}

 				

 		}

+

 		

 	/**

 	 * Sets an alternative function to handle templates, which will be passed to by elgg_view.

@@ -1300,7 +1358,20 @@
 		
 		return false;
 	}
-	
-	
+	

+	/**

+	 * Get the full URL of the current page.

+	 *

+	 * @return string The URL

+	 */
+	function full_url()

+	{

+		$s = empty($_SERVER["HTTPS"]) ? '' : ($_SERVER["HTTPS"] == "on") ? "s" : "";

+		$protocol = substr(strtolower($_SERVER["SERVER_PROTOCOL"]), 0, strpos(strtolower($_SERVER["SERVER_PROTOCOL"]), "/")) . $s;

+		$port = ($_SERVER["SERVER_PORT"] == "80") ? "" : (":".$_SERVER["SERVER_PORT"]);

+		return $protocol . "://" . $_SERVER['SERVER_NAME'] . $port . $_SERVER['REQUEST_URI'];

+	}

+

+		
 	

 ?>
\ No newline at end of file
diff --git a/views/default/canvas/default.php b/views/default/canvas/default.php
new file mode 100644
index 000000000..2d2707918
--- /dev/null
+++ b/views/default/canvas/default.php
@@ -0,0 +1,21 @@
+<?php

+

+	/**

+	 * Elgg default layout

+	 * 

+	 * @package Elgg

+	 * @subpackage Core

+	 * @license http://www.gnu.org/licenses/old-licenses/gpl-2.0.html GNU Public License version 2

+	 * @author Curverider Ltd

+	 * @copyright Curverider Ltd 2008

+	 * @link http://elgg.org/

+	 */

+

+	for ($i = 1; $i < 8; $i++) {

+		

+		if (isset($vars["area{$i}"]))

+			echo $vars["area{$i}"];

+		

+	}

+

+?>
\ No newline at end of file
diff --git a/views/default/page_elements/header.php b/views/default/page_elements/header.php
index fdcfe71df..75ef6f746 100644
--- a/views/default/page_elements/header.php
+++ b/views/default/page_elements/header.php
@@ -24,6 +24,23 @@
 			$title = $vars['title'];
 		} else {
 			$title = $vars['config']->sitename . ": " . $vars['title'];
+		}

+		

+		global $autofeed;

+		if (isset($autofeed) && $autofeed == true) {

+			$url = full_url();

+			if (substr_count($url,'?')) {

+				$url .= "&view=rss";

+			} else {

+				$url .= "?view=rss";

+			}

+			$feedref = <<<END

+			

+	<link rel="alternate" type="application/rss+xml" title="RSS" href="{$url}" />

+			

+END;

+		} else {

+			$feedref = "";

 		}
 		
 ?>
@@ -38,7 +55,12 @@
 	<script type="text/javascript" src="<?php echo $vars['url']; ?>javascript/initialise_elgg.js"></script>
 	<!-- include the default css file -->
 	<link rel="stylesheet" href="<?php echo $vars['url']; ?>_css/css.css" type="text/css" />
-	<?php echo elgg_view('metatags',$vars); ?>
+	<?php 

+

+		echo $feedref;

+		echo elgg_view('metatags',$vars); 

+		

+	?>
 </head>
 
 <body>
diff --git a/views/foaf/pageshells/pageshell.php b/views/foaf/pageshells/pageshell.php
index a5f73db2d..534cfac2c 100644
--- a/views/foaf/pageshells/pageshell.php
+++ b/views/foaf/pageshells/pageshell.php
@@ -38,7 +38,7 @@
     <foaf:name><?php echo $owner->name; ?></foaf:name>

     <foaf:homepage rdf:resource="<?php echo $owner->getURL(); ?>" />

     <foaf:mbox_sha1sum><?php echo sha1("mailto:" . $owner->email); ?></foaf:mbox_sha1sum>

-    <!--  TODO <foaf:img rdf:resource="http://p-userpic.livejournal.com/74250113/9186" /> -->

+    <foaf:img rdf:resource="<?php echo $vars['url']; ?>pg/icon/<?php echo $owner->username; ?>/large/icon.jpg" />

 	<?php

 

 		echo $vars['body'];

diff --git a/views/rss/canvas/default.php b/views/rss/canvas/default.php
new file mode 100644
index 000000000..2d2707918
--- /dev/null
+++ b/views/rss/canvas/default.php
@@ -0,0 +1,21 @@
+<?php

+

+	/**

+	 * Elgg default layout

+	 * 

+	 * @package Elgg

+	 * @subpackage Core

+	 * @license http://www.gnu.org/licenses/old-licenses/gpl-2.0.html GNU Public License version 2

+	 * @author Curverider Ltd

+	 * @copyright Curverider Ltd 2008

+	 * @link http://elgg.org/

+	 */

+

+	for ($i = 1; $i < 8; $i++) {

+		

+		if (isset($vars["area{$i}"]))

+			echo $vars["area{$i}"];

+		

+	}

+

+?>
\ No newline at end of file
diff --git a/views/rss/object/default.php b/views/rss/object/default.php
new file mode 100644
index 000000000..7c5fc11d8
--- /dev/null
+++ b/views/rss/object/default.php
@@ -0,0 +1,29 @@
+<?php

+

+	/**

+	 * Elgg default object view

+	 * 

+	 * @package Elgg

+	 * @subpackage Core

+	 * @license http://www.gnu.org/licenses/old-licenses/gpl-2.0.html GNU Public License version 2

+	 * @author Curverider Ltd

+	 * @copyright Curverider Ltd 2008

+	 * @link http://elgg.org/

+	 */

+

+	$title = $vars['entity']->title;

+	if (empty($title)) {

+		$title = substr($vars['entity']->description,0,32);

+		if (strlen($vars['entity']->description) > 32)

+			$title .= " ...";

+	}

+

+?>

+

+	<item>

+	  <guid isPermaLink='true'><?php echo $vars['entity']->getURL(); ?></guid>

+	  <pubDate><?php echo date("r",$vars['entity']->time_created) ?></pubDate>

+	  <link><?php echo $vars['entity']->getURL(); ?></link>

+	  <title><![CDATA[<?php echo $title; ?>]]></title>

+	  <description><![CDATA[<?php echo (nl2br($vars['entity']->description)); ?>]]></description>

+	</item>

diff --git a/views/rss/pageshells/pageshell.php b/views/rss/pageshells/pageshell.php
new file mode 100644
index 000000000..8a34752bc
--- /dev/null
+++ b/views/rss/pageshells/pageshell.php
@@ -0,0 +1,51 @@
+<?php

+

+	/**

+	 * Elgg RSS output pageshell

+	 * 

+	 * @package Elgg

+	 * @subpackage Core

+	 * @license http://www.gnu.org/licenses/old-licenses/gpl-2.0.html GNU Public License version 2

+	 * @copyright Curverider Ltd 2008

+	 * @link http://elgg.org/

+	 * 

+	 */

+

+	header("Content-Type: text/xml");

+	

+	echo "<?xml version='1.0'?>\n";

+	

+	if (!$owner = page_owner_entity()) {

+		if (!isloggedin()) {

+			exit;

+		} else {

+			$owner = $vars['user'];

+		}

+	}

+	

+	// Set title

+		if (empty($vars['title'])) {

+			$title = $vars['config']->sitename;

+		} else if (empty($vars['config']->sitename)) {

+			$title = $vars['title'];

+		} else {

+			$title = $vars['config']->sitename . ": " . $vars['title'];

+		}

+		

+	// Remove RSS from URL

+		$url = str_replace('?view=rss','',full_url());

+		$url = str_replace('&view=rss','',full_url());

+

+?>

+

+<rss version='2.0'   xmlns:dc='http://purl.org/dc/elements/1.1/'>

+	<channel xml:base=''>

+		<title><![CDATA[<?php echo $title; ?>]]></title>

+		<link><?php echo $url; ?></link>

+		<?php

+

+			echo $vars['body'];

+		

+		?>

+	</channel>

+</rss>
\ No newline at end of file
diff --git a/views/rss/user/default.php b/views/rss/user/default.php
new file mode 100644
index 000000000..5d72b30df
--- /dev/null
+++ b/views/rss/user/default.php
@@ -0,0 +1,22 @@
+<?php

+

+	/**

+	 * Elgg default user view

+	 * 

+	 * @package Elgg

+	 * @subpackage Core

+	 * @license http://www.gnu.org/licenses/old-licenses/gpl-2.0.html GNU Public License version 2

+	 * @author Curverider Ltd

+	 * @copyright Curverider Ltd 2008

+	 * @link http://elgg.org/

+	 */

+

+?>

+

+	<item>

+	  <guid isPermaLink='true'><?php echo $vars['entity']->getURL(); ?></guid>

+	  <pubDate><?php echo date("r",$vars['entity']->time_created) ?></pubDate>

+	  <link><?php echo $vars['entity']->getURL(); ?></link>

+	  <title><![CDATA[<?php echo (nl2br($vars['entity']->name)); ?>]]></title>

+	  <description><![CDATA[<?php echo (nl2br($vars['entity']->description)); ?>]]></description>

+	</item>