Merge pull request #2 from caxy/feature-1-twig_extension

Added Twig Extension

Author: mgersten-caxy

Resources/config/services.yml

@@ -1,7 +1,13 @@
 parameters:
     caxy.html_diff.class: Caxy\HtmlDiffBundle\Service\HtmlDiffService
+    caxy.twig.html_diff_extension.class: Caxy\HtmlDiffBundle\Twig\HtmlDiffExtension
 
 services:
     caxy.html_diff:
         class: %caxy.html_diff.class%
-        arguments:  [@service_container]
+        arguments: [@service_container]
+    caxy.twig.html_diff_extension:
+        class: %caxy.twig.html_diff_extension.class%
+        arguments: [@service_container]
+        tags:
+            - { name: twig.extension }

Twig/HtmlDiffExtension.php

@@ -0,0 +1,35 @@
+<?php
+
+namespace Caxy\HtmlDiffBundle\Twig;
+
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+class HtmlDiffExtension extends \Twig_Extension
+{
+    protected $container;
+
+    protected $htmlDiff;
+
+    public function __construct(ContainerInterface $container)
+    {
+        $this->container = $container;
+        $this->htmlDiff = $this->container->get('caxy.html_diff');
+    }
+
+    public function getFunctions()
+    {
+        return array(
+            new \Twig_SimpleFunction('htmldiff', array($this, 'htmlDiff')),
+        );
+    }
+
+    public function htmlDiff($a, $b)
+    {
+        return $this->htmlDiff->diff((string) $a, (string) $b);
+    }
+
+    public function getName()
+    {
+        return 'caxy_htmldiff_extension';
+    }
+}