f894e55602
- 简化 http-api/http-tcp/web-toolkit 的 router.py，抽取重复代码 - 修复 ws-api middleware 中间件返回值传递问题 - 修复 web-toolkit template.py 安全漏洞 (eval → AST 验证) - 将首页标题从 "OSS Runtime" 改为 "Future OSS" - 更新 README.md 与 static/banner.svg - 新增 i18n 国际化插件 (骨架) - 新增 oss/shared/ 共享模块
91 lines
2.9 KiB
Python
91 lines
2.9 KiB
Python
"""i18n HTTP 中间件"""
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import json
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from typing import Optional, Callable
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from oss.plugin.types import Response
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class I18nMiddleware:
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"""i18n 中间件
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自动检测语言并注入到请求上下文
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检测优先级:
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1. URL 查询参数 ?lang=xx
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2. Cookie locale=xx
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3. Accept-Language 头
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4. 默认语言
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"""
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def __init__(self, engine, config: dict = None):
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self.engine = engine
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self.cookie_name = (config or {}).get("cookie_name", "locale")
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self.query_param = (config or {}).get("query_param", "lang")
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def handle(self, request: dict, next_fn: Callable) -> Response:
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"""处理请求
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1. 检测语言
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2. 将语言注入到请求上下文
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3. 调用下一个中间件/处理器
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4. 可选: 在响应中添加 Content-Language 头
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"""
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# 解析查询参数
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query_lang = self._parse_query_param(request.get("query", ""))
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# 解析 Cookie
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cookie_lang = self._parse_cookie(request.get("headers", {}))
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# 解析 Accept-Language
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accept_language = request.get("headers", {}).get("Accept-Language",
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request.get("headers", {}).get("accept-language", ""))
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# 检测语言
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locale = self.engine.detect_locale(
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accept_language=accept_language if accept_language else None,
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query_lang=query_lang,
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cookie_lang=cookie_lang
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)
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# 设置当前语言
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self.engine.set_locale(locale)
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# 注入到请求上下文
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request["locale"] = locale
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request["t"] = self.engine.t # 提供翻译函数
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# 调用下一个处理器
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response = next_fn()
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# 在响应中添加 Content-Language 头
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if isinstance(response, Response):
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response.headers["Content-Language"] = locale
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return response
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def _parse_query_param(self, query_string: str) -> Optional[str]:
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"""从查询字符串解析语言参数"""
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if not query_string:
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return None
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# 解析 ?lang=xx 或 &lang=xx
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params = {}
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for param in query_string.lstrip("?").split("&"):
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if "=" in param:
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key, value = param.split("=", 1)
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params[key.strip()] = value.strip()
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return params.get(self.query_param)
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def _parse_cookie(self, headers: dict) -> Optional[str]:
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"""从 Cookie 解析语言参数"""
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cookie_header = headers.get("Cookie", headers.get("cookie", ""))
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if not cookie_header:
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return None
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cookies = {}
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for cookie in cookie_header.split(";"):
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if "=" in cookie:
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key, value = cookie.split("=", 1)
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cookies[key.strip()] = value.strip()
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return cookies.get(self.cookie_name)
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