mirror of
https://github.com/nonebot/nonebot2.git
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172 lines
4.6 KiB
Python
172 lines
4.6 KiB
Python
"""本模块包含了 NoneBot 的一些工具函数
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FrontMatter:
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sidebar_position: 8
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description: nonebot.utils 模块
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"""
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import re
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import json
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import asyncio
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import inspect
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import dataclasses
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from functools import wraps, partial
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from contextlib import asynccontextmanager
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from typing_extensions import ParamSpec, get_args, get_origin
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from typing import (
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Any,
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Type,
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Tuple,
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Union,
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TypeVar,
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Callable,
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Optional,
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Awaitable,
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Coroutine,
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AsyncGenerator,
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ContextManager,
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)
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from pydantic.typing import is_union, is_none_type
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from nonebot.log import logger
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from nonebot.typing import overrides
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P = ParamSpec("P")
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R = TypeVar("R")
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T = TypeVar("T")
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K = TypeVar("K")
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V = TypeVar("V")
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def escape_tag(s: str) -> str:
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"""用于记录带颜色日志时转义 `<tag>` 类型特殊标签
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参考: [loguru color 标签](https://loguru.readthedocs.io/en/stable/api/logger.html#color)
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参数:
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s: 需要转义的字符串
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"""
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return re.sub(r"</?((?:[fb]g\s)?[^<>\s]*)>", r"\\\g<0>", s)
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def generic_check_issubclass(
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cls: Any, class_or_tuple: Union[Type[Any], Tuple[Type[Any], ...]]
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) -> bool:
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"""检查 cls 是否是 class_or_tuple 中的一个类型子类。
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特别的,如果 cls 是 `typing.Union` 或 `types.UnionType` 类型,
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则会检查其中的类型是否是 class_or_tuple 中的一个类型子类。(None 会被忽略)
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"""
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try:
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return issubclass(cls, class_or_tuple)
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except TypeError:
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origin = get_origin(cls)
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if is_union(origin):
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for type_ in get_args(cls):
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if not is_none_type(type_) and not generic_check_issubclass(
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type_, class_or_tuple
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):
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return False
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return True
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elif origin:
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return issubclass(origin, class_or_tuple)
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return False
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def is_coroutine_callable(call: Callable[..., Any]) -> bool:
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"""检查 call 是否是一个 callable 协程函数"""
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if inspect.isroutine(call):
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return inspect.iscoroutinefunction(call)
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if inspect.isclass(call):
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return False
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func_ = getattr(call, "__call__", None)
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return inspect.iscoroutinefunction(func_)
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def is_gen_callable(call: Callable[..., Any]) -> bool:
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"""检查 call 是否是一个生成器函数"""
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if inspect.isgeneratorfunction(call):
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return True
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func_ = getattr(call, "__call__", None)
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return inspect.isgeneratorfunction(func_)
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def is_async_gen_callable(call: Callable[..., Any]) -> bool:
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"""检查 call 是否是一个异步生成器函数"""
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if inspect.isasyncgenfunction(call):
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return True
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func_ = getattr(call, "__call__", None)
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return inspect.isasyncgenfunction(func_)
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def run_sync(call: Callable[P, R]) -> Callable[P, Coroutine[None, None, R]]:
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"""一个用于包装 sync function 为 async function 的装饰器
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参数:
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call: 被装饰的同步函数
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"""
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@wraps(call)
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async def _wrapper(*args: P.args, **kwargs: P.kwargs) -> R:
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loop = asyncio.get_running_loop()
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pfunc = partial(call, *args, **kwargs)
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result = await loop.run_in_executor(None, pfunc)
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return result
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return _wrapper
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@asynccontextmanager
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async def run_sync_ctx_manager(
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cm: ContextManager[T],
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) -> AsyncGenerator[T, None]:
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"""一个用于包装 sync context manager 为 async context manager 的执行函数"""
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try:
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yield await run_sync(cm.__enter__)()
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except Exception as e:
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ok = await run_sync(cm.__exit__)(type(e), e, None)
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if not ok:
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raise e
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else:
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await run_sync(cm.__exit__)(None, None, None)
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def get_name(obj: Any) -> str:
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"""获取对象的名称"""
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if inspect.isfunction(obj) or inspect.isclass(obj):
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return obj.__name__
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return obj.__class__.__name__
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class DataclassEncoder(json.JSONEncoder):
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"""在JSON序列化 {re}`nonebot.adapters._message.Message` (List[Dataclass]) 时使用的 `JSONEncoder`"""
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@overrides(json.JSONEncoder)
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def default(self, o):
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if dataclasses.is_dataclass(o):
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return dataclasses.asdict(o)
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return super().default(o)
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def logger_wrapper(logger_name: str):
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"""用于打印 adapter 的日志。
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参数:
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logger_name: adapter 的名称
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返回:
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日志记录函数
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- level: 日志等级
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- message: 日志信息
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- exception: 异常信息
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"""
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def log(level: str, message: str, exception: Optional[Exception] = None):
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logger.opt(colors=True, exception=exception).log(
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level, f"<m>{escape_tag(logger_name)}</m> | " + message
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)
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return log
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