From beacebd04d42e940f4fc96eca85c59b75125a4eb Mon Sep 17 00:00:00 2001
From: Alexander Schranz <alexander@sulu.io>
Date: Mon, 26 May 2025 13:33:24 +0200
Subject: [PATCH 1/2] Add locale_is_right_to_left polyfill

---
 src/Php85/Php85.php       |  5 +++++
 src/Php85/bootstrap.php   |  4 ++++
 tests/Php85/Php85Test.php | 19 +++++++++++++++++++
 3 files changed, 28 insertions(+)

diff --git a/src/Php85/Php85.php b/src/Php85/Php85.php
index a406fe0e..3e96492f 100644
--- a/src/Php85/Php85.php
+++ b/src/Php85/Php85.php
@@ -13,6 +13,7 @@
 
 /**
  * @author Pierre Ambroise <pierre27.ambroise@gmail.com>
+ * @author Alexander Schranz <alexander@sulu.io>
  *
  * @internal
  */
@@ -33,4 +34,8 @@ public static function get_exception_handler(): ?callable
 
         return $handler;
     }
+
+    public static function locale_is_right_to_left(string $locale): bool {
+        return (bool) preg_match('/^(?:ar|he|fa|ur|ps|sd|ug|ckb|yi|dv|ku_arab|ku-arab)(?:[_-].*)?$/i', $locale);
+    }
 }
diff --git a/src/Php85/bootstrap.php b/src/Php85/bootstrap.php
index 0da63eb9..1e4a83c4 100644
--- a/src/Php85/bootstrap.php
+++ b/src/Php85/bootstrap.php
@@ -22,3 +22,7 @@ function get_error_handler(): ?callable { return p\Php85::get_error_handler(); }
 if (!function_exists('get_exception_handler')) {
     function get_exception_handler(): ?callable { return p\Php85::get_exception_handler(); }
 }
+
+if (!function_exists('locale_is_right_to_left')) {
+    function locale_is_right_to_left(string $locale): bool { return p\Php85::locale_is_right_to_left($locale); }
+}
diff --git a/tests/Php85/Php85Test.php b/tests/Php85/Php85Test.php
index fc4c7163..cdcfcd5b 100644
--- a/tests/Php85/Php85Test.php
+++ b/tests/Php85/Php85Test.php
@@ -78,6 +78,25 @@ public static function provideHandler()
         $handler = new TestHandlerInvokable();
         yield [$handler, $handler];
     }
+
+    public function testLocaleIsRightToLeft(): void
+    {
+        $this->assertTrue(locale_is_right_to_left('ar'));
+        $this->assertTrue(locale_is_right_to_left('he'));
+        $this->assertTrue(locale_is_right_to_left('fa'));
+        $this->assertTrue(locale_is_right_to_left('ur'));
+        $this->assertTrue(locale_is_right_to_left('ps'));
+        $this->assertTrue(locale_is_right_to_left('sd'));
+        $this->assertTrue(locale_is_right_to_left('ug'));
+        $this->assertTrue(locale_is_right_to_left('ckb'));
+        $this->assertTrue(locale_is_right_to_left('yi'));
+        $this->assertTrue(locale_is_right_to_left('dv'));
+        $this->assertTrue(locale_is_right_to_left('ku_arab'));
+        $this->assertTrue(locale_is_right_to_left('ku-arab'));
+
+        $this->assertFalse(locale_is_right_to_left('en'));
+        $this->assertFalse(locale_is_right_to_left('fr'));
+    }
 }
 
 class TestHandler

From 667130e51a3854a015c72a09feb89f677758f8a5 Mon Sep 17 00:00:00 2001
From: Alexander Schranz <alexander@sulu.io>
Date: Tue, 24 Jun 2025 16:01:07 +0200
Subject: [PATCH 2/2] Update Php85.php

---
 src/Php85/Php85.php | 48 ++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 47 insertions(+), 1 deletion(-)

diff --git a/src/Php85/Php85.php b/src/Php85/Php85.php
index 3e96492f..d861b76c 100644
--- a/src/Php85/Php85.php
+++ b/src/Php85/Php85.php
@@ -36,6 +36,52 @@ public static function get_exception_handler(): ?callable
     }
 
     public static function locale_is_right_to_left(string $locale): bool {
-        return (bool) preg_match('/^(?:ar|he|fa|ur|ps|sd|ug|ckb|yi|dv|ku_arab|ku-arab)(?:[_-].*)?$/i', $locale);
+        static $rtlScripts = [
+            'Adlm', 'Arab', 'Armi', 'Hebr', 'Mani', 'Mend', 'Nkoo',
+            'Phnx', 'Rohg', 'Samr', 'Syrc', 'Thaa',
+        ];
+
+        static $languageToLikelyRtlScript = [
+            'ar' => 'Arab', // Arabic
+            'fa' => 'Arab', // Persian (Farsi)
+            'ur' => 'Arab', // Urdu
+            'ps' => 'Arab', // Pashto
+            'sd' => 'Arab', // Sindhi
+            'ug' => 'Arab', // Uyghur
+            'ckb' => 'Arab', // Sorani Kurdish
+            'he' => 'Hebr', // Hebrew
+            'yi' => 'Hebr', // Yiddish
+            'dv' => 'Thaa', // Dhivehi
+            'nqo' => 'Nkoo', // N'Ko
+        ];
+
+        if (empty($locale)) {
+            return false;
+        }
+
+        $localeParts = preg_split('/[_-]/', $locale);
+        $language = strtolower($localeParts[0] ?? '');
+        $script = null;
+
+        foreach ($localeParts as $part) {
+            if (strlen($part) === 4 && ctype_alpha($part)) {
+                $script = ucfirst(strtolower($part));
+                break;
+            }
+        }
+
+        if ($script === null) {
+            $script = $languageToLikelyScript[$language] ?? null;
+        }
+
+        if ($script === null) {
+            if (in_array($language, ['ar', 'he', 'fa', 'ur', 'ps', 'sd', 'ug', 'ckb', 'yi', 'dv'])) {
+                 return true;
+            }
+
+            return false;
+        }
+
+        return in_array($script, $rtlScripts, true);
     }
 }