new module creation

e107_handlers/override_class.php

@@ -0,0 +1,65 @@
+<?php
+/*
++ ----------------------------------------------------------------------------+
+|     e107 website system
+|
+|     <20>Steve Dunstan 2001-2002
+|     http://e107.org
+|     jalist@e107.org
+|
+|     Released under the terms and conditions of the
+|     GNU General Public License (http://gnu.org).
+|
+|     $Source: /cvs_backup/e107_0.8/e107_handlers/override_class.php,v $
+|     $Revision: 1.1.1.1 $
+|     $Date: 2006-12-02 04:33:47 $
+|     $Author: mcfly_e107 $
++----------------------------------------------------------------------------+
+*/
+	
+if (!defined('e107_INIT')) { exit; }
+
+/*
+ * USAGE
+ * In user code, to override an existing function...
+ *
+ * $override->override_function('original_func_name','mynew_function_name',['optional_include_file_from_root']);
+ *
+ * In e107 code...
+ * if ($over_func_name = $override->override_check('original_func_name')) {
+ *	$result=call_user_func($over_func_name, params...);
+ * }
+ *
+ */
+ 
+class override {
+	var $functions = array();
+	var $includes = array();
+	 
+	function override_function($override, $function, $include) {
+		if ($include) {
+			$this->includes[$override] = $include;
+		}
+		else if (isset($this->includes[$override])) {
+			unset($this->includes[$override]);
+		}
+		$this->functions[$override] = $function;
+	}
+	 
+	function override_check($override) {
+		if (isset($this->includes[$override])) {
+			if (file_exists($this->includes[$override])) {
+				include_once($this->includes[$override]);
+			}
+			if (function_exists($this->functions[$override])) {
+				return $this->functions[$override];
+			} else {
+				return false;
+			}
+		} else {
+			return false;
+		}
+	}
+}
+	
+?>