Add snippets support

code/site/components/com_pages/template/default.php

@@ -108,8 +108,8 @@ public function invokeHelper($identifier, ...$params)
         if(!empty($parts)) {
             $identifier = implode('.', $parts).'.template.helper.'.$identifier;
         }
-
-        $helper = $this->createHelper($identifier, $params);
+        
+        $helper = $this->createHelper($identifier);
 
         //Call the helper function
         if (!is_callable(array($helper, $function))) {
@@ -121,7 +121,13 @@ public function invokeHelper($identifier, ...$params)
             $params = array_merge($this->getParameters()->toArray(), $params);
         }
 
-        return $helper->$function(...$params);
+        if(is_numeric(key($params))) {
+            $result = $helper->$function(...$params);
+        } else {
+            $result = $helper->$function($params);
+        }
+
+        return $result;
     }
 
     public function createHelper($helper, $config = array())

code/site/components/com_pages/template/helper/snippet.php

@@ -0,0 +1,59 @@
+<?php
+
+class ComPagesTemplateHelperSnippet extends ComPagesTemplateHelperAbstract
+{
+    private $__snippets = array();
+
+    public function __invoke($name, $snippet)
+    {
+        if(is_string($snippet)) {
+            $result = $this->define($name, $snippet);
+        } else {
+            $result = $this->expand($name, $snippet);
+        }
+
+        return $result;
+    }
+
+    public function define(string $name, string $snippet, $overwrite = false)
+    {
+        $result = false;
+
+        if(!isset($this->__snippets[$name]) || $overwrite)
+        {
+            $this->__snippets[$name] = $snippet;
+            $result = true;
+        }
+
+        return $result;
+    }
+
+    public function expand(string $name, array $variables = array())
+    {
+        $result = false;
+
+        if(isset($this->__snippets[$name]))
+        {
+            $snippet = $this->__snippets[$name];
+
+            //Use the php template engine to evaluate
+            $str = "<?php \n echo <<<SNIPPET\n$snippet\nSNIPPET;\n";
+
+            $result = $this->getObject('template.engine.factory')
+                ->createEngine('php')
+                ->loadString($str)
+                ->render($variables);
+
+            //Find single whitespace before " or before > in html tags and remove it
+            preg_match_all('#<\s*\w.*?>#', $result, $tags);
+
+            foreach($tags as $tag) {
+                $result = str_replace($tag,  str_replace(array(' >', ' "'), array('>', '"'), $tag), $result);
+            }
+        }
+        else throw new RuntimeException('Snippet: '.$name.' does not exist');
+
+        return $result;
+    }
+}
+