mirror of
https://github.com/nonebot/nonebot2.git
synced 2024-11-24 17:15:05 +08:00
bbd13c04cc
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
435 lines
12 KiB
Python
435 lines
12 KiB
Python
import abc
|
||
from copy import deepcopy
|
||
from typing_extensions import Self
|
||
from dataclasses import field, asdict, dataclass
|
||
from typing import (
|
||
Any,
|
||
Dict,
|
||
List,
|
||
Type,
|
||
Tuple,
|
||
Union,
|
||
Generic,
|
||
TypeVar,
|
||
Iterable,
|
||
Optional,
|
||
SupportsIndex,
|
||
overload,
|
||
)
|
||
|
||
from nonebot.compat import custom_validation, type_validate_python
|
||
|
||
from .template import MessageTemplate
|
||
|
||
TMS = TypeVar("TMS", bound="MessageSegment")
|
||
TM = TypeVar("TM", bound="Message")
|
||
|
||
|
||
@custom_validation
|
||
@dataclass
|
||
class MessageSegment(abc.ABC, Generic[TM]):
|
||
"""消息段基类"""
|
||
|
||
type: str
|
||
"""消息段类型"""
|
||
data: Dict[str, Any] = field(default_factory=dict)
|
||
"""消息段数据"""
|
||
|
||
@classmethod
|
||
@abc.abstractmethod
|
||
def get_message_class(cls) -> Type[TM]:
|
||
"""获取消息数组类型"""
|
||
raise NotImplementedError
|
||
|
||
@abc.abstractmethod
|
||
def __str__(self) -> str:
|
||
"""该消息段所代表的 str，在命令匹配部分使用"""
|
||
raise NotImplementedError
|
||
|
||
def __len__(self) -> int:
|
||
return len(str(self))
|
||
|
||
def __ne__(self, other: Self) -> bool:
|
||
return not self == other
|
||
|
||
def __add__(self: TMS, other: Union[str, TMS, Iterable[TMS]]) -> TM:
|
||
return self.get_message_class()(self) + other
|
||
|
||
def __radd__(self: TMS, other: Union[str, TMS, Iterable[TMS]]) -> TM:
|
||
return self.get_message_class()(other) + self
|
||
|
||
@classmethod
|
||
def __get_validators__(cls):
|
||
yield cls._validate
|
||
|
||
@classmethod
|
||
def _validate(cls, value) -> Self:
|
||
if isinstance(value, cls):
|
||
return value
|
||
if isinstance(value, MessageSegment):
|
||
raise ValueError(f"Type {type(value)} can not be converted to {cls}")
|
||
if not isinstance(value, dict):
|
||
raise ValueError(f"Expected dict for MessageSegment, got {type(value)}")
|
||
if "type" not in value:
|
||
raise ValueError(
|
||
f"Expected dict with 'type' for MessageSegment, got {value}"
|
||
)
|
||
return cls(type=value["type"], data=value.get("data", {}))
|
||
|
||
def get(self, key: str, default: Any = None):
|
||
return asdict(self).get(key, default)
|
||
|
||
def keys(self):
|
||
return asdict(self).keys()
|
||
|
||
def values(self):
|
||
return asdict(self).values()
|
||
|
||
def items(self):
|
||
return asdict(self).items()
|
||
|
||
def join(self: TMS, iterable: Iterable[Union[TMS, TM]]) -> TM:
|
||
return self.get_message_class()(self).join(iterable)
|
||
|
||
def copy(self) -> Self:
|
||
return deepcopy(self)
|
||
|
||
@abc.abstractmethod
|
||
def is_text(self) -> bool:
|
||
"""当前消息段是否为纯文本"""
|
||
raise NotImplementedError
|
||
|
||
|
||
@custom_validation
|
||
class Message(List[TMS], abc.ABC):
|
||
"""消息序列
|
||
|
||
参数:
|
||
message: 消息内容
|
||
"""
|
||
|
||
def __init__(
|
||
self,
|
||
message: Union[str, None, Iterable[TMS], TMS] = None,
|
||
):
|
||
super().__init__()
|
||
if message is None:
|
||
return
|
||
elif isinstance(message, str):
|
||
self.extend(self._construct(message))
|
||
elif isinstance(message, MessageSegment):
|
||
self.append(message)
|
||
elif isinstance(message, Iterable):
|
||
self.extend(message)
|
||
else:
|
||
self.extend(self._construct(message)) # pragma: no cover
|
||
|
||
@classmethod
|
||
def template(cls, format_string: Union[str, TM]) -> MessageTemplate[Self]:
|
||
"""创建消息模板。
|
||
|
||
用法和 `str.format` 大致相同，支持以 `Message` 对象作为消息模板并输出消息对象。
|
||
并且提供了拓展的格式化控制符，
|
||
可以通过该消息类型的 `MessageSegment` 工厂方法创建消息。
|
||
|
||
参数:
|
||
format_string: 格式化模板
|
||
|
||
返回:
|
||
消息格式化器
|
||
"""
|
||
return MessageTemplate(format_string, cls)
|
||
|
||
@classmethod
|
||
@abc.abstractmethod
|
||
def get_segment_class(cls) -> Type[TMS]:
|
||
"""获取消息段类型"""
|
||
raise NotImplementedError
|
||
|
||
def __str__(self) -> str:
|
||
return "".join(str(seg) for seg in self)
|
||
|
||
@classmethod
|
||
def __get_validators__(cls):
|
||
yield cls._validate
|
||
|
||
@classmethod
|
||
def _validate(cls, value) -> Self:
|
||
if isinstance(value, cls):
|
||
return value
|
||
elif isinstance(value, Message):
|
||
raise ValueError(f"Type {type(value)} can not be converted to {cls}")
|
||
elif isinstance(value, str):
|
||
pass
|
||
elif isinstance(value, dict):
|
||
value = type_validate_python(cls.get_segment_class(), value)
|
||
elif isinstance(value, Iterable):
|
||
value = [type_validate_python(cls.get_segment_class(), v) for v in value]
|
||
else:
|
||
raise ValueError(
|
||
f"Expected str, dict or iterable for Message, got {type(value)}"
|
||
)
|
||
return cls(value)
|
||
|
||
@staticmethod
|
||
@abc.abstractmethod
|
||
def _construct(msg: str) -> Iterable[TMS]:
|
||
"""构造消息数组"""
|
||
raise NotImplementedError
|
||
|
||
def __add__(self, other: Union[str, TMS, Iterable[TMS]]) -> Self:
|
||
result = self.copy()
|
||
result += other
|
||
return result
|
||
|
||
def __radd__(self, other: Union[str, TMS, Iterable[TMS]]) -> Self:
|
||
result = self.__class__(other)
|
||
return result + self
|
||
|
||
def __iadd__(self, other: Union[str, TMS, Iterable[TMS]]) -> Self:
|
||
if isinstance(other, str):
|
||
self.extend(self._construct(other))
|
||
elif isinstance(other, MessageSegment):
|
||
self.append(other)
|
||
elif isinstance(other, Iterable):
|
||
self.extend(other)
|
||
else:
|
||
raise TypeError(f"Unsupported type {type(other)!r}")
|
||
return self
|
||
|
||
@overload
|
||
def __getitem__(self, args: str) -> Self:
|
||
"""获取仅包含指定消息段类型的消息
|
||
|
||
参数:
|
||
args: 消息段类型
|
||
|
||
返回:
|
||
所有类型为 `args` 的消息段
|
||
"""
|
||
|
||
@overload
|
||
def __getitem__(self, args: Tuple[str, int]) -> TMS:
|
||
"""索引指定类型的消息段
|
||
|
||
参数:
|
||
args: 消息段类型和索引
|
||
|
||
返回:
|
||
类型为 `args[0]` 的消息段第 `args[1]` 个
|
||
"""
|
||
|
||
@overload
|
||
def __getitem__(self, args: Tuple[str, slice]) -> Self:
|
||
"""切片指定类型的消息段
|
||
|
||
参数:
|
||
args: 消息段类型和切片
|
||
|
||
返回:
|
||
类型为 `args[0]` 的消息段切片 `args[1]`
|
||
"""
|
||
|
||
@overload
|
||
def __getitem__(self, args: int) -> TMS:
|
||
"""索引消息段
|
||
|
||
参数:
|
||
args: 索引
|
||
|
||
返回:
|
||
第 `args` 个消息段
|
||
"""
|
||
|
||
@overload
|
||
def __getitem__(self, args: slice) -> Self:
|
||
"""切片消息段
|
||
|
||
参数:
|
||
args: 切片
|
||
|
||
返回:
|
||
消息切片 `args`
|
||
"""
|
||
|
||
def __getitem__(
|
||
self,
|
||
args: Union[
|
||
str,
|
||
Tuple[str, int],
|
||
Tuple[str, slice],
|
||
int,
|
||
slice,
|
||
],
|
||
) -> Union[TMS, Self]:
|
||
arg1, arg2 = args if isinstance(args, tuple) else (args, None)
|
||
if isinstance(arg1, int) and arg2 is None:
|
||
return super().__getitem__(arg1)
|
||
elif isinstance(arg1, slice) and arg2 is None:
|
||
return self.__class__(super().__getitem__(arg1))
|
||
elif isinstance(arg1, str) and arg2 is None:
|
||
return self.__class__(seg for seg in self if seg.type == arg1)
|
||
elif isinstance(arg1, str) and isinstance(arg2, int):
|
||
return [seg for seg in self if seg.type == arg1][arg2]
|
||
elif isinstance(arg1, str) and isinstance(arg2, slice):
|
||
return self.__class__([seg for seg in self if seg.type == arg1][arg2])
|
||
else:
|
||
raise ValueError("Incorrect arguments to slice") # pragma: no cover
|
||
|
||
def __contains__(self, value: Union[TMS, str]) -> bool:
|
||
"""检查消息段是否存在
|
||
|
||
参数:
|
||
value: 消息段或消息段类型
|
||
返回:
|
||
消息内是否存在给定消息段或给定类型的消息段
|
||
"""
|
||
if isinstance(value, str):
|
||
return bool(next((seg for seg in self if seg.type == value), None))
|
||
return super().__contains__(value)
|
||
|
||
def has(self, value: Union[TMS, str]) -> bool:
|
||
"""与 {ref}``__contains__` <nonebot.adapters.Message.__contains__>` 相同"""
|
||
return value in self
|
||
|
||
def index(self, value: Union[TMS, str], *args: SupportsIndex) -> int:
|
||
"""索引消息段
|
||
|
||
参数:
|
||
value: 消息段或者消息段类型
|
||
arg: start 与 end
|
||
|
||
返回:
|
||
索引 index
|
||
|
||
异常:
|
||
ValueError: 消息段不存在
|
||
"""
|
||
if isinstance(value, str):
|
||
first_segment = next((seg for seg in self if seg.type == value), None)
|
||
if first_segment is None:
|
||
raise ValueError(f"Segment with type {value!r} is not in message")
|
||
return super().index(first_segment, *args)
|
||
return super().index(value, *args)
|
||
|
||
def get(self, type_: str, count: Optional[int] = None) -> Self:
|
||
"""获取指定类型的消息段
|
||
|
||
参数:
|
||
type_: 消息段类型
|
||
count: 获取个数
|
||
|
||
返回:
|
||
构建的新消息
|
||
"""
|
||
if count is None:
|
||
return self[type_]
|
||
|
||
iterator, filtered = (
|
||
seg for seg in self if seg.type == type_
|
||
), self.__class__()
|
||
for _ in range(count):
|
||
seg = next(iterator, None)
|
||
if seg is None:
|
||
break
|
||
filtered.append(seg)
|
||
return filtered
|
||
|
||
def count(self, value: Union[TMS, str]) -> int:
|
||
"""计算指定消息段的个数
|
||
|
||
参数:
|
||
value: 消息段或消息段类型
|
||
|
||
返回:
|
||
个数
|
||
"""
|
||
return len(self[value]) if isinstance(value, str) else super().count(value)
|
||
|
||
def only(self, value: Union[TMS, str]) -> bool:
|
||
"""检查消息中是否仅包含指定消息段
|
||
|
||
参数:
|
||
value: 指定消息段或消息段类型
|
||
|
||
返回:
|
||
是否仅包含指定消息段
|
||
"""
|
||
if isinstance(value, str):
|
||
return all(seg.type == value for seg in self)
|
||
return all(seg == value for seg in self)
|
||
|
||
def append(self, obj: Union[str, TMS]) -> Self:
|
||
"""添加一个消息段到消息数组末尾。
|
||
|
||
参数:
|
||
obj: 要添加的消息段
|
||
"""
|
||
if isinstance(obj, MessageSegment):
|
||
super().append(obj)
|
||
elif isinstance(obj, str):
|
||
self.extend(self._construct(obj))
|
||
else:
|
||
raise ValueError(f"Unexpected type: {type(obj)} {obj}") # pragma: no cover
|
||
return self
|
||
|
||
def extend(self, obj: Union[Self, Iterable[TMS]]) -> Self:
|
||
"""拼接一个消息数组或多个消息段到消息数组末尾。
|
||
|
||
参数:
|
||
obj: 要添加的消息数组
|
||
"""
|
||
for segment in obj:
|
||
self.append(segment)
|
||
return self
|
||
|
||
def join(self, iterable: Iterable[Union[TMS, Self]]) -> Self:
|
||
"""将多个消息连接并将自身作为分割
|
||
|
||
参数:
|
||
iterable: 要连接的消息
|
||
|
||
返回:
|
||
连接后的消息
|
||
"""
|
||
ret = self.__class__()
|
||
for index, msg in enumerate(iterable):
|
||
if index != 0:
|
||
ret.extend(self)
|
||
if isinstance(msg, MessageSegment):
|
||
ret.append(msg.copy())
|
||
else:
|
||
ret.extend(msg.copy())
|
||
return ret
|
||
|
||
def copy(self) -> Self:
|
||
"""深拷贝消息"""
|
||
return deepcopy(self)
|
||
|
||
def include(self, *types: str) -> Self:
|
||
"""过滤消息
|
||
|
||
参数:
|
||
types: 包含的消息段类型
|
||
|
||
返回:
|
||
新构造的消息
|
||
"""
|
||
return self.__class__(seg for seg in self if seg.type in types)
|
||
|
||
def exclude(self, *types: str) -> Self:
|
||
"""过滤消息
|
||
|
||
参数:
|
||
types: 不包含的消息段类型
|
||
|
||
返回:
|
||
新构造的消息
|
||
"""
|
||
return self.__class__(seg for seg in self if seg.type not in types)
|
||
|
||
def extract_plain_text(self) -> str:
|
||
"""提取消息内纯文本消息"""
|
||
|
||
return "".join(str(seg) for seg in self if seg.is_text())
|