Add autoload support for simpleSAMLphp.

This patch adds a autoloader file (lib/_autoload.php), and changes
www/_include.php to load this file.


git-svn-id: https://simplesamlphp.googlecode.com/svn/trunk@608 44740490-163a-0410-bde0-09ae8108e29a

lib/_autoload.php

+<?php
+
+/**
+ * This file implements a autoloader for simpleSAMLphp. This autoloader
+ * will search for files under the simpleSAMLphp directory.
+ *
+ * @author Olav Morken, UNINETT AS.
+ * @package simpleSAMLphp
+ * @version $Id$
+ */
+
+
+/**
+ * Autoload function for simpleSAMLphp.
+ *
+ * It will autoload all classes stored in the lib-directory.
+ *
+ * @param $className  The name of the class.
+ */
+function SimpleSAML_autoload($className) {
+
+	$libDir = dirname(__FILE__) . '/';
+
+	/* Special handling for xmlseclibs.php. */
+	if(in_array($className, array('XMLSecurityKey', 'XMLSecurityDSig', 'XMLSecEnc'), TRUE)) {
+		require_once($libDir . 'xmlseclibs.php');
+		return;
+	}
+
+	$file = $libDir . str_replace('_', '/', $className) . '.php';
+	if(file_exists($file)) {
+		require_once($file);
+	}
+}
+
+/* Register autload function for simpleSAMLphp. */
+spl_autoload_register('SimpleSAML_autoload');
+
+?>
\ No newline at end of file

www/_include.php

@@ -18,6 +18,10 @@ if(get_magic_quotes_gpc()) {
 	}
 }
 
+
+/* Initialize the autoloader. */
+require_once(dirname(dirname(__FILE__)) . '/lib/_autoload.php');
+
 $path_extra = dirname(dirname(__FILE__)) . '/lib';