arrays and simple conditional blocks in template, template for nav, load templates from themes

include/template_processor.php

@@ -0,0 +1,50 @@
+<?php
+	
+
+	class Template {
+		var $s;
+		var $r;
+		var $search;
+		var $replace;
+		
+		private function _build_replace($r, $prefix){
+	
+			if(is_array($r) && count($r)) {
+				foreach ($r as $k => $v ) {
+					if (is_array($v))
+						$this->_build_replace($v, "$prefix$k.");
+					
+					$this->search[] =  $prefix . $k;
+					$this->replace[] = $v;
+				}
+			}
+		} 
+		
+		private function _replcb_if($m){
+			//echo "<pre>"; var_dump($m);
+			$keys = explode(".",$m[1]);
+			$val = $this->r;
+			foreach($keys as $k) {
+				$val = $val[$k];
+			}
+			
+			//echo $val;
+			return ($val?$m[2]:"");
+		}
+		
+		public function replace($s, $r) {
+			$this->s = $s;
+			$this->r = $r;
+			$this->search = array();
+			$this->replace = array();
+	
+			$this->_build_replace($r, "");
+	
+			
+			$s = preg_replace_callback("|{{ *if *([^ }]*) *}}([^{]*){{ *endif *}}|", array($this, "_replcb_if"), $s);
+			
+			return str_replace($this->search,$this->replace,$s);
+		}
+		
+	}	
+	$t = new Template;