--- /dev/null
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Translation;
+
+/**
+ * IdentityTranslator does not translate anything.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+class IdentityTranslator implements TranslatorInterface
+{
+ private $selector;
+ private $locale;
+
+ /**
+ * Constructor.
+ *
+ * @param MessageSelector|null $selector The message selector for pluralization
+ */
+ public function __construct(MessageSelector $selector = null)
+ {
+ $this->selector = $selector ?: new MessageSelector();
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function setLocale($locale)
+ {
+ $this->locale = $locale;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getLocale()
+ {
+ return $this->locale ?: \Locale::getDefault();
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function trans($id, array $parameters = array(), $domain = null, $locale = null)
+ {
+ return strtr((string) $id, $parameters);
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function transChoice($id, $number, array $parameters = array(), $domain = null, $locale = null)
+ {
+ return strtr($this->selector->choose((string) $id, (int) $number, $locale ?: $this->getLocale()), $parameters);
+ }
+}