preparation release

HTML/Template/Flexy/Compiler/Regex/Math.php

@@ -0,0 +1,74 @@
+<?php
+//
+// +----------------------------------------------------------------------+
+// | PHP Version 4                                                        |
+// +----------------------------------------------------------------------+
+// | Copyright (c) 1997-2003 The PHP Group                                |
+// +----------------------------------------------------------------------+
+// | This source file is subject to version 2.02 of the PHP license,      |
+// | that is bundled with this package in the file LICENSE, and is        |
+// | available at through the world-wide-web at                           |
+// | http://www.php.net/license/2_02.txt.                                 |
+// | If you did not receive a copy of the PHP license and are unable to   |
+// | obtain it through the world-wide-web, please send a note to          |
+// | license@php.net so we can mail you a copy immediately.               |
+// +----------------------------------------------------------------------+
+// | Author:  Alan Knowles <alan@akbkhome.com>
+// +----------------------------------------------------------------------+
+//
+ 
+
+/**
+* A Math Filter 
+*
+* enable simple maths to be done in the template
+*
+* TODO: add an {if:t.xxx%2} type syntax.. 
+*
+* @package    HTML_Template_Flexy
+*  
+*/  
+ 
+
+class HTML_Template_Flexy_Compiler_Regex_Math {
+    /*
+    *   @var    string   $start    the start tag for the template (escaped for regex)
+    */
+    var $start = '\{'; 
+    /*
+    *   @var    string   $stop    the stopt tag for the template (escaped for regex)
+    */
+    var $stop = '\}';  //ending template tag
+     /**
+    * Standard Set Engine
+    * 
+    * 
+    * @param   object HTML_Template_Flexy   the main engine
+    * @access   private
+    */
+    function _set_engine(&$engine) {
+       
+    }
+ 
+    /* 
+    * allow simple add multiply, divide and subtraction
+    * 
+    * eg.
+    * {(12+t.somevar)*2} maps to =(12+$t->somevar)*2
+    *
+    * @param   string The template
+    * @access   public
+    */
+    function variables ($input) {
+        $input = preg_replace(
+            "/".$this->start."([0-9\(\)+*\/-]*)([a-z0-9]+)([0-9\(\)+*\/-]*)".$this->stop."/ie",
+            "'<?=\\1($'.str_replace('.','->','\\2').')\\3?>'",
+            $input);
+            
+        return $input;
+    }
+  
+
+}
+
+?>