add Twig & refactor poche

inc/Twig/Filter.php

@@ -0,0 +1,81 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Represents a template filter.
+ *
+ * Use Twig_SimpleFilter instead.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ * @deprecated since 1.12 (to be removed in 2.0)
+ */
+abstract class Twig_Filter implements Twig_FilterInterface, Twig_FilterCallableInterface
+{
+    protected $options;
+    protected $arguments = array();
+
+    public function __construct(array $options = array())
+    {
+        $this->options = array_merge(array(
+            'needs_environment' => false,
+            'needs_context'     => false,
+            'pre_escape'        => null,
+            'preserves_safety'  => null,
+            'callable'          => null,
+        ), $options);
+    }
+
+    public function setArguments($arguments)
+    {
+        $this->arguments = $arguments;
+    }
+
+    public function getArguments()
+    {
+        return $this->arguments;
+    }
+
+    public function needsEnvironment()
+    {
+        return $this->options['needs_environment'];
+    }
+
+    public function needsContext()
+    {
+        return $this->options['needs_context'];
+    }
+
+    public function getSafe(Twig_Node $filterArgs)
+    {
+        if (isset($this->options['is_safe'])) {
+            return $this->options['is_safe'];
+        }
+
+        if (isset($this->options['is_safe_callback'])) {
+            return call_user_func($this->options['is_safe_callback'], $filterArgs);
+        }
+    }
+
+    public function getPreservesSafety()
+    {
+        return $this->options['preserves_safety'];
+    }
+
+    public function getPreEscape()
+    {
+        return $this->options['pre_escape'];
+    }
+
+    public function getCallable()
+    {
+        return $this->options['callable'];
+    }
+}