🔀 Merge pull request #557

Feature: template support raw string

docs/api/adapters/README.md

@@ -547,11 +547,30 @@ Event 基类。提供获取关键信息的方法，其余信息可直接获取
 
 ## _class_ `MessageTemplate`
 
-基类：`string.Formatter`, `Generic`[`nonebot.adapters._template.TM`]
+基类：`string.Formatter`, `Generic`[`nonebot.adapters._template.TF`]
 
 消息模板格式化实现类
 
 
+### `__init__(template, factory=<class 'str'>)`
+
+
+* **说明**
+
+    创建一个模板
+
+
+
+* **参数**
+
+    
+    * `template: Union[str, Message]`: 模板
+
+
+    * `factory: Union[str, Message]`: 消息构造类型，默认为 str
+
+
+
 ### `format(*args, **kwargs)`
 
 

nonebot/adapters/_message.py

@@ -136,7 +136,7 @@ class Message(List[TMS], abc.ABC):
 
           - ``MessageFormatter[TM]``: 消息格式化器
         """
-        return MessageTemplate(cls, format_string)
+        return MessageTemplate(format_string, cls)
 
     @classmethod
     @abc.abstractmethod

nonebot/adapters/_template.py

@@ -2,22 +2,44 @@ import inspect
 import functools
 from string import Formatter
 from typing import (TYPE_CHECKING, Any, Set, List, Type, Tuple, Union, Generic,
-                    Mapping, TypeVar, Sequence)
+                    Mapping, TypeVar, Sequence, cast, overload)
 
 if TYPE_CHECKING:
     from . import Message, MessageSegment
 
 TM = TypeVar("TM", bound="Message")
+TF = TypeVar("TF", str, "Message")
 
 
-class MessageTemplate(Formatter, Generic[TM]):
+class MessageTemplate(Formatter, Generic[TF]):
     """消息模板格式化实现类"""
 
-    def __init__(self, factory: Type[TM], template: Union[str, TM]) -> None:
-        self.template = template
-        self.factory = factory
+    @overload
+    def __init__(self: "MessageTemplate[str]",
+                 template: str,
+                 factory: Type[str] = str) -> None:
+        ...
 
-    def format(self, *args: Any, **kwargs: Any) -> TM:
+    @overload
+    def __init__(self: "MessageTemplate[TM]", template: Union[str, TM],
+                 factory: Type[TM]) -> None:
+        ...
+
+    def __init__(self, template, factory=str) -> None:
+        """
+        :说明:
+
+          创建一个模板
+
+        :参数:
+
+          * ``template: Union[str, Message]``: 模板
+          * ``factory: Union[str, Message]``: 消息构造类型，默认为 `str`
+        """
+        self.template: Union[str, TF] = template
+        self.factory: Type[TF] = factory
+
+    def format(self, *args: Any, **kwargs: Any) -> TF:
         """
         :说明:
 
@@ -27,8 +49,8 @@ class MessageTemplate(Formatter, Generic[TM]):
         if isinstance(self.template, str):
             msg += self.vformat(self.template, args, kwargs)
         elif isinstance(self.template, self.factory):
-            for seg in self.template:
-                seg: "MessageSegment"
+            template = cast("Message[MessageSegment]", self.template)
+            for seg in template:
                 msg += self.vformat(str(seg), args,
                                     kwargs) if seg.is_text() else seg
         else:
@@ -37,7 +59,7 @@ class MessageTemplate(Formatter, Generic[TM]):
         return msg
 
     def vformat(self, format_string: str, args: Sequence[Any],
-                kwargs: Mapping[str, Any]) -> TM:
+                kwargs: Mapping[str, Any]) -> TF:
         used_args = set()
         result, _ = self._vformat(format_string, args, kwargs, used_args, 2)
         self.check_unused_args(list(used_args), args, kwargs)
@@ -51,8 +73,7 @@ class MessageTemplate(Formatter, Generic[TM]):
         used_args: Set[Union[int, str]],
         recursion_depth: int,
         auto_arg_index: int = 0,
-    ) -> Tuple[TM, int]:
-
+    ) -> Tuple[TF, int]:
         if recursion_depth < 0:
             raise ValueError("Max string recursion exceeded")
 
@@ -115,6 +136,9 @@ class MessageTemplate(Formatter, Generic[TM]):
                                              [""])), auto_arg_index
 
     def format_field(self, value: Any, format_spec: str) -> Any:
+        if issubclass(self.factory, str):
+            return super().format_field(value, format_spec)
+
         segment_class: Type[MessageSegment] = self.factory.get_segment_class()
         method = getattr(segment_class, format_spec, None)
         method_type = inspect.getattr_static(segment_class, format_spec, None)

pages/changelog.md

@@ -4,6 +4,10 @@ sidebar: auto
 
 # 更新日志
 
+## v2.0.0a17
+
+- 新增 `MessageTemplate` 对于 `str` 普通模板的支持
+
 ## v2.0.0a16
 
 - 新增 `MessageTemplate` 可用于 `Message` 的模板生成
@@ -13,6 +17,8 @@ sidebar: auto
 - 修复 `fastapi` Driver Websocket 未能正确提供请求头部
 - 新增 `fastapi` Driver 更多的 uvicorn 相关配置项
 - 新增 `quart` Driver 更多的 uvicorn 相关配置项
+- 修复 `endswith` Rule 错误的正则匹配
+- 修复 `cqhttp` Adapter `image`, `record`, `video` 对 `BytesIO` 不正常的读取操作
 
 ## v2.0.0a15