From ef09020c7e5639701c167aa34fbfe4f3107cc015 Mon Sep 17 00:00:00 2001
From: Saikari <lin@sz.cn.eu.org>
Date: Sat, 17 Jan 2026 17:16:52 +0300
Subject: test

---
 core/src/xmake/string/case.c | 54 ++++++++++++++++++++++----------------------
 1 file changed, 27 insertions(+), 27 deletions(-)

(limited to 'core/src/xmake/string')

diff --git a/core/src/xmake/string/case.c b/core/src/xmake/string/case.c
index 18b54b6a6..7fd355519 100644
--- a/core/src/xmake/string/case.c
+++ b/core/src/xmake/string/case.c
@@ -36,19 +36,13 @@
 
 #ifdef TB_CONFIG_OS_WINDOWS
 #   include <windows.h>
+#else
+#   include <locale.h>
+#   if TB_CONFIG_OS_MACOS || TB_CONFIG_OS_IOS || TB_CONFIG_OS_BSD
+#       include <xlocale.h>
+#   endif
 #endif
 
-/* //////////////////////////////////////////////////////////////////////////////////////
- * globals
- */
-
-/* 
- * Define a static Tbox spinlock to protect the non-thread-safe setlocale calls.
- * This ensures that on non-Windows platforms, only one thread modifies the 
- * global locale at a time.
- */
-static tb_spinlock_t g_locale_lock = TB_SPINLOCK_INIT;
-
 /* //////////////////////////////////////////////////////////////////////////////////////
  * helper
  */
@@ -79,29 +73,35 @@ static tb_int_t xm_string_case(lua_State* lua, tb_bool_t lower) {
 #ifdef TB_CONFIG_OS_WINDOWS
             if (lower) CharLowerBuffW((LPWSTR)wb, (DWORD)wn);
             else CharUpperBuffW((LPWSTR)wb, (DWORD)wn);
-#else
-            tb_spinlock_enter(&g_locale_lock);
-            // attempt to set utf-8 locale for towlower/towupper
-            // we need this on some platforms like DragonFly BSD, because towlower/towupper depends on the current locale
-#ifdef TB_CONFIG_LIBC_HAVE_SETLOCALE
-            tb_char_t const* old_locale_str = setlocale(LC_ALL, tb_null);
-            tb_char_t* old_locale = old_locale_str? tb_strdup(old_locale_str) : tb_null;
-            tb_setlocale();
-#endif
+#else 
+            locale_t new_loc = (locale_t)0;
+            locale_t old_loc = (locale_t)0;
+
+            // Create a temporary UTF-8 locale object
+            // LC_CTYPE_MASK: We only care about character classification/case
+            new_loc = newlocale(LC_CTYPE_MASK, "UTF-8", (locale_t)0);
+            if (!new_loc) {
+                // Fallback if system calls it en_US.UTF-8
+                new_loc = newlocale(LC_CTYPE_MASK, "en_US.UTF-8", (locale_t)0);
+            }
+
+            // Switch thread locale (No global lock needed!)
+            if (new_loc) {
+                old_loc = uselocale(new_loc);
+            }
+
+            // Convert
             tb_size_t i = 0;
             for (i = 0; i < wn; i++) {
                 wb[i] = lower? towlower(wb[i]) : towupper(wb[i]);
             }
 
-#ifdef TB_CONFIG_LIBC_HAVE_SETLOCALE
-            if (old_locale) {
-                setlocale(LC_ALL, old_locale);
-                tb_free(old_locale);
+            // Restore thread locale and free object
+            if (new_loc) {
+                uselocale(old_loc);
+                freelocale(new_loc);
             }
 #endif
-            /* Unlock after locale is restored */
-            tb_spinlock_leave(&g_locale_lock);
-#endif
 
             // convert to utf8
             tb_size_t   un = (wn + 1) * 4;
-- 
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