From a21db43b73d14d4718b171afcbc27c323d8de6d7 Mon Sep 17 00:00:00 2001
From: Rasmus Schultz <rasmus@mindplay.dk>
Date: Thu, 11 Aug 2016 10:46:12 +0200
Subject: [PATCH] add support for intl extension

---
 composer.json     |  3 +++
 src/UrlHelper.php | 31 ++++++++++++++++++++-----------
 2 files changed, 23 insertions(+), 11 deletions(-)

diff --git a/composer.json b/composer.json
index 2e1c3bf..90c36f0 100644
--- a/composer.json
+++ b/composer.json
@@ -23,6 +23,9 @@
         "mindplay/testies": "dev-master",
         "phpunit/php-code-coverage": "^2.2.4"
     },
+    "suggest": {
+        "ext-intl": "provides better/faster support for slug-creation in URL helpers"
+    },
     "autoload": {
         "psr-4": {
             "mindplay\\timber\\": "src/"
diff --git a/src/UrlHelper.php b/src/UrlHelper.php
index 88d69db..f366170 100644
--- a/src/UrlHelper.php
+++ b/src/UrlHelper.php
@@ -50,17 +50,26 @@ protected function str($value)
     protected function slug($value, $max_length = null) {
         $string = $this->str($value);
 
-        static $latin1 = [
-            // https://github.com/jbroadway/urlify
-            'À' => 'A', 'Á' => 'A', 'Â' => 'A', 'Ã' => 'A', 'Ä' => 'A', 'Å' => 'A','Ă' => 'A', 'Æ' => 'AE', 'Ç' => 'C', 'È' => 'E', 'É' => 'E', 'Ê' => 'E', 'Ë' => 'E', 'Ì' => 'I', 'Í' => 'I', 'Î' => 'I',
-            'Ï' => 'I', 'Ð' => 'D', 'Ñ' => 'N', 'Ò' => 'O', 'Ó' => 'O', 'Ô' => 'O', 'Õ' => 'O', 'Ö' => 'O', 'Ő' => 'O', 'Ø' => 'O', 'Œ' => 'OE' ,'Ș' => 'S','Ț' => 'T', 'Ù' => 'U', 'Ú' => 'U', 'Û' => 'U', 'Ü' => 'U', 'Ű' => 'U',
-            'Ý' => 'Y', 'Þ' => 'TH', 'ß' => 'ss', 'à' => 'a', 'á' => 'a', 'â' => 'a', 'ã' => 'a', 'ä' => 'a', 'å' => 'a', 'ă' => 'a', 'æ' => 'ae', 'ç' => 'c', 'è' => 'e', 'é' => 'e', 'ê' => 'e', 'ë' => 'e',
-            'ì' => 'i', 'í' => 'i', 'î' => 'i', 'ï' => 'i', 'ð' => 'd', 'ñ' => 'n', 'ò' => 'o', 'ó' => 'o', 'ô' => 'o', 'õ' => 'o', 'ö' => 'o', 'ő' => 'o', 'ø' => 'o', 'œ' => 'oe', 'ș' => 's', 'ț' => 't', 'ù' => 'u', 'ú' => 'u',
-            'û' => 'u', 'ü' => 'u', 'ű' => 'u', 'ý' => 'y', 'þ' => 'th', 'ÿ' => 'y'
-        ];
-
-        $clean = str_replace(array_keys($latin1), array_values($latin1), $string);
-        $clean = mb_strtolower($clean, 'UTF-8');
+        if (function_exists('transliterator_transliterate')) {
+            // use intl extension where available:
+
+            $clean = transliterator_transliterate('Any-Latin; Latin-ASCII; Lower()', $string);
+        } else {
+            // use a less capable fallback-function with support for basic latin characters only:
+
+            static $latin1 = [
+                // https://github.com/jbroadway/urlify
+                'À' => 'A', 'Á' => 'A', 'Â' => 'A', 'Ã' => 'A', 'Ä' => 'A', 'Å' => 'A','Ă' => 'A', 'Æ' => 'AE', 'Ç' => 'C', 'È' => 'E', 'É' => 'E', 'Ê' => 'E', 'Ë' => 'E', 'Ì' => 'I', 'Í' => 'I', 'Î' => 'I',
+                'Ï' => 'I', 'Ð' => 'D', 'Ñ' => 'N', 'Ò' => 'O', 'Ó' => 'O', 'Ô' => 'O', 'Õ' => 'O', 'Ö' => 'O', 'Ő' => 'O', 'Ø' => 'O', 'Œ' => 'OE' ,'Ș' => 'S','Ț' => 'T', 'Ù' => 'U', 'Ú' => 'U', 'Û' => 'U', 'Ü' => 'U', 'Ű' => 'U',
+                'Ý' => 'Y', 'Þ' => 'TH', 'ß' => 'ss', 'à' => 'a', 'á' => 'a', 'â' => 'a', 'ã' => 'a', 'ä' => 'a', 'å' => 'a', 'ă' => 'a', 'æ' => 'ae', 'ç' => 'c', 'è' => 'e', 'é' => 'e', 'ê' => 'e', 'ë' => 'e',
+                'ì' => 'i', 'í' => 'i', 'î' => 'i', 'ï' => 'i', 'ð' => 'd', 'ñ' => 'n', 'ò' => 'o', 'ó' => 'o', 'ô' => 'o', 'õ' => 'o', 'ö' => 'o', 'ő' => 'o', 'ø' => 'o', 'œ' => 'oe', 'ș' => 's', 'ț' => 't', 'ù' => 'u', 'ú' => 'u',
+                'û' => 'u', 'ü' => 'u', 'ű' => 'u', 'ý' => 'y', 'þ' => 'th', 'ÿ' => 'y'
+            ];
+
+            $clean = str_replace(array_keys($latin1), array_values($latin1), $string);
+            $clean = mb_strtolower($clean, 'UTF-8');
+        }
+
         $clean = preg_replace('/[^a-zA-Z0-9]+/u', '-', $clean); // reduce disallowed char ranges to dashes
         $clean = preg_replace('/[^a-zA-Z0-9-]+/u', '', $clean); // remove any remaining disallowed chars
         $clean = preg_replace('/(^-+|-+$)/', '', $clean); // strip leading/trailing dashes