add Twig & refactor poche

inc/Twig/Extensions/Gettext/Extractor.php

@@ -0,0 +1,95 @@
+<?php
+
+/**
+ * This file is part of the Twig Gettext utility.
+ *
+ *  (c) Саша Стаменковић <umpirsky@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Twig\Gettext;
+
+use Symfony\Component\Filesystem\Filesystem;
+
+/**
+ * Extracts translations from twig templates.
+ *
+ * @author Саша Стаменковић <umpirsky@gmail.com>
+ */
+class Extractor
+{
+    /**
+     * @var \Twig_Environment
+     */
+    protected $environment;
+
+    /**
+     * Template cached file names.
+     *
+     * @var string[]
+     */
+    protected $templates;
+
+    /**
+     * Gettext parameters.
+     *
+     * @var string[]
+     */
+    protected $parameters;
+
+    public function __construct(\Twig_Environment $environment)
+    {
+        $this->environment = $environment;
+        $this->reset();
+    }
+
+    protected function reset()
+    {
+        $this->templates = array();
+        $this->parameters = array();
+    }
+
+    public function addTemplate($path)
+    {
+        $this->environment->loadTemplate($path);
+        $this->templates[] = $this->environment->getCacheFilename($path);
+    }
+
+    public function addGettextParameter($parameter)
+    {
+        $this->parameters[] = $parameter;
+    }
+
+    public function setGettextParameters(array $parameters)
+    {
+        $this->parameters = $parameters;
+    }
+
+    public function extract()
+    {
+        $command = 'xgettext';
+        $command .= ' '.join(' ', $this->parameters);
+        $command .= ' '.join(' ', $this->templates);
+
+        $error = 0;
+        $output = system($command, $error);
+        if (0 !== $error) {
+            throw new \RuntimeException(sprintf(
+                'Gettext command "%s" failed with error code %s and output: %s',
+                $command,
+                $error,
+                $output
+            ));
+        }
+
+        $this->reset();
+    }
+
+    public function __destruct()
+    {
+        $filesystem = new Filesystem();
+        $filesystem->remove($this->environment->getCache());
+    }
+}