From 23a34583a812bbbe5df0bcdc4a40ba32bc4ce409 Mon Sep 17 00:00:00 2001
From: ben <ben@36083f99-b078-4883-b0ff-0f9b5a30f544>
Date: Fri, 15 Feb 2008 12:57:00 +0000
Subject: Simple plugin mechanism

git-svn-id: https://code.elgg.org/elgg/trunk@39 36083f99-b078-4883-b0ff-0f9b5a30f544
---
 engine/lib/configuration.php | 44 ++++++++++++++++++++++++++++++++++++++++++
 engine/lib/elgglib.php       |  2 +-
 engine/lib/plugins.php       | 46 ++++++++++++++++++++++++++++++++++++++++++++
 engine/start.php             |  6 ++++++
 4 files changed, 97 insertions(+), 1 deletion(-)
 create mode 100644 engine/lib/configuration.php
 create mode 100644 engine/lib/plugins.php

(limited to 'engine')

diff --git a/engine/lib/configuration.php b/engine/lib/configuration.php
new file mode 100644
index 000000000..697bd247d
--- /dev/null
+++ b/engine/lib/configuration.php
@@ -0,0 +1,44 @@
+<?php
+
+	/**
+	 * Elgg configuration library
+	 * Contains functions for managing system configuration
+	 * 
+	 * @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/
+	 */
+
+	/**
+	 * If certain configuration elements don't exist, autodetect sensible defaults 
+	 * 
+	 * @uses $CONFIG The main configuration global
+	 *
+	 */
+		function set_default_config() {
+			
+			global $CONFIG;
+			
+			if (empty($CONFIG->path))
+				$CONFIG->path = str_replace("\\","/",dirname(dirname(dirname(__FILE__)))) . "/";
+
+			if (empty($CONFIG->viewpath))
+				$CONFIG->viewpath = $CONFIG->path . "views/";	
+
+			if (empty($CONFIG->pluginspath))
+				$CONFIG->pluginspath = $CONFIG->path . "mod/";
+				
+			if (empty($CONFIG->wwwroot)) {
+				$CONFIG->wwwroot = "http://" . $_SERVER['SERVER_NAME'];
+				if (strripos($_SERVER['DOCUMENT_ROOT'],"/") < (sizeof($_SERVER['DOCUMENT_ROOT']) - 1)) {
+					$CONFIG->wwwroot .= "/";
+				}
+				$CONFIG->wwwroot .= str_replace($_SERVER['DOCUMENT_ROOT'],"",$CONFIG->path);
+			}
+			
+		}
+
+?>
\ No newline at end of file
diff --git a/engine/lib/elgglib.php b/engine/lib/elgglib.php
index ae5ef951a..ba2156242 100644
--- a/engine/lib/elgglib.php
+++ b/engine/lib/elgglib.php
@@ -104,7 +104,7 @@
 		    foreach($viewlist as $view) {
 		    
 		    	if (!isset($CONFIG->views->locations[$view])) {
-		    		$location = $CONFIG->viewpath . "views/";
+		    		$location = $CONFIG->viewpath;
 		    	} else {
 		    		$location = $CONFIG->views->locations[$view];
 		    	}
diff --git a/engine/lib/plugins.php b/engine/lib/plugins.php
new file mode 100644
index 000000000..81f5757e9
--- /dev/null
+++ b/engine/lib/plugins.php
@@ -0,0 +1,46 @@
+<?php
+
+	/**
+	 * Elgg plugins library
+	 * Contains functions for managing plugins
+	 * 
+	 * @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 now, loads plugins directly
+	 *
+	 * @todo Add proper plugin handler that launches plugins in an admin-defined order and activates them on admin request
+	 */
+		function load_plugins() {
+			
+			global $CONFIG;
+			if (!empty($CONFIG->pluginspath)) {
+				
+				if ($handle = opendir($CONFIG->pluginspath)) {
+					while ($mod = readdir($handle)) {
+						if (!in_array($mod,array('.','..','.svn','CVS')) && is_dir($mod)) {
+							if (!@include($ONFIG->pluginspath . $mod . "/start.php"))
+								throw new PluginException("{$mod} is a misconfigured plugin.");
+						}
+					}
+				}
+				
+			}
+			
+		}
+		
+	/**
+	 * @class PluginException 
+	 * A plugin Exception, thrown when an Exception occurs relating to the plugin mechanism. Subclass for specific plugin Exceptions.
+	 */
+		
+		class PluginException extends Exception {}
+
+?>
\ No newline at end of file
diff --git a/engine/start.php b/engine/start.php
index b238966d3..a0ca5d718 100644
--- a/engine/start.php
+++ b/engine/start.php
@@ -81,6 +81,12 @@
 				if (!@include_once($file))
 					throw new InstallationException("Could not load {$file}");
 			}
+			
+		// Autodetect some default configuration settings
+			set_default_config();
+			
+		// Load plugins
+			load_plugins();
 		
 		} else {	// End portion for sanitised installs only
 			
-- 
cgit v1.2.3