fix: 强制设置有效 locale 修复 vnpy_ctp CTP 登录崩溃

Co-authored-by: Cursor <cursoragent@cursor.com>

locale_fix.py

@@ -0,0 +1,65 @@
+"""Linux 上 vnpy_ctp 连接 CTP 前须设置有效 locale（否则 C++ 层 abort）。"""
+from __future__ import annotations
+
+import locale
+import logging
+import os
+import subprocess
+
+logger = logging.getLogger(__name__)
+
+_LOCALE_DONE = False
+_LOCALE_NAME = ""
+
+
+def _list_locale_candidates() -> list[str]:
+    names: list[str] = []
+    for item in (
+        "C.UTF-8",
+        "en_US.UTF-8",
+        "en_US.utf8",
+        "POSIX",
+        "C",
+    ):
+        if item not in names:
+            names.append(item)
+    try:
+        out = subprocess.check_output(["locale", "-a"], text=True, stderr=subprocess.DEVNULL)
+        for line in out.splitlines():
+            loc = line.strip()
+            if not loc:
+                continue
+            low = loc.lower()
+            if "utf" in low and loc not in names:
+                names.insert(0, loc)
+    except (OSError, subprocess.SubprocessError):
+        pass
+    return names
+
+
+def ensure_process_locale() -> str:
+    """强制设置进程 locale，覆盖系统里无效的旧值。"""
+    global _LOCALE_DONE, _LOCALE_NAME
+    if _LOCALE_DONE:
+        return _LOCALE_NAME
+
+    last_err: locale.Error | None = None
+    for name in _list_locale_candidates():
+        try:
+            locale.setlocale(locale.LC_ALL, name)
+            os.environ["LANG"] = name
+            os.environ["LC_ALL"] = name
+            os.environ["LC_CTYPE"] = name
+            _LOCALE_DONE = True
+            _LOCALE_NAME = name
+            logger.info("进程 locale 已设置: %s", name)
+            return name
+        except locale.Error as exc:
+            last_err = exc
+            continue
+
+    raise RuntimeError(
+        "未找到可用 locale，vnpy_ctp 会在 CTP 登录后崩溃。"
+        "请执行: apt install -y locales && locale-gen en_US.UTF-8 && "
+        "update-locale LANG=en_US.UTF-8 LC_ALL=en_US.UTF-8"
+    ) from last_err