Drupal 8.0.0 beta 12. More info: https://www.drupal.org/node/2514176

core/modules/system/src/MachineNameController.php

@@ -0,0 +1,75 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\system\MachineNameController.
+ */
+
+namespace Drupal\system;
+
+use Drupal\Component\Transliteration\TransliterationInterface;
+use Drupal\Component\Utility\Unicode;
+use Drupal\Core\DependencyInjection\ContainerInjectionInterface;
+use Symfony\Component\HttpFoundation\JsonResponse;
+use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+/**
+ * Controller routines for machine name transliteration routes.
+ */
+class MachineNameController implements ContainerInjectionInterface {
+
+  /**
+   * The transliteration helper.
+   *
+   * @var \Drupal\Component\Transliteration\TransliterationInterface
+   */
+  protected $transliteration;
+
+  /**
+   * Constructs a MachineNameController object.
+   *
+   * @param \Drupal\Component\Transliteration\TransliterationInterface $transliteration
+   *   The transliteration helper.
+   */
+  public function __construct(TransliterationInterface $transliteration) {
+    $this->transliteration = $transliteration;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function create(ContainerInterface $container) {
+    return new static(
+      $container->get('transliteration')
+    );
+  }
+
+  /**
+   * Transliterates a string in given language. Various postprocessing possible.
+   *
+   * @param \Symfony\Component\HttpFoundation\Request $request
+   *   The input string and language for the transliteration.
+   *   Optionally may contain the replace_pattern, replace, lowercase parameters.
+   *
+   * @return \Symfony\Component\HttpFoundation\JsonResponse
+   *   The transliterated string.
+   */
+  public function transliterate(Request $request) {
+    $text = $request->query->get('text');
+    $langcode = $request->query->get('langcode');
+    $replace_pattern = $request->query->get('replace_pattern');
+    $replace = $request->query->get('replace');
+    $lowercase = $request->query->get('lowercase');
+
+    $transliterated = $this->transliteration->transliterate($text, $langcode, '_');
+    if($lowercase) {
+      $transliterated = Unicode::strtolower($transliterated);
+    }
+    if(isset($replace_pattern) && isset($replace)) {
+      $transliterated = preg_replace('@' . $replace_pattern . '@', $replace, $transliterated);
+    }
+    return new JsonResponse($transliterated);
+  }
+
+}