Updated the HtmlDiffService Configuration to grab the Kernal cache location

Author: dbergunder

DependencyInjection/Configuration.php

@@ -5,6 +5,7 @@
 use Symfony\Component\Config\Definition\Builder\ArrayNodeDefinition;
 use Symfony\Component\Config\Definition\Builder\TreeBuilder;
 use Symfony\Component\Config\Definition\ConfigurationInterface;
+use Symfony\Component\HttpKernel\KernelInterface;
 
 /**
  * This is the class that validates and merges configuration from your app/config files
@@ -13,6 +14,13 @@
  */
 class Configuration implements ConfigurationInterface
 {
+    protected $kernel;
+
+    public function __construct(KernelInterface $kernel)
+    {
+        $this->kernel = $kernel;
+    }
+
     /**
      * {@inheritDoc}
      */
@@ -37,6 +45,9 @@ public function getConfigTreeBuilder()
                 ->booleanNode('use_table_diffing')
                     ->defaultTrue()
                 ->end()
+                ->scalerNode('purifier_cache_location')
+                    ->defaultValue($this->kernel->getCacheDir())
+                ->end()
                 ->integerNode('match_threshold')->end()
                 ->append($this->getDoctrineCacheDriverNode('doctrine_cache_driver'))
             ->end();

Resources/config/services.yml

@@ -6,6 +6,7 @@ parameters:
 services:
     caxy.html_diff.config:
         class: %caxy.html_diff.config.class%
+        arguments: [@kernel]
         factory: [%caxy.html_diff.config.class%, create]
     caxy.html_diff:
         class: %caxy.html_diff.class%