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https://github.com/Tencent/WeKnora.git
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begoniezhao
2d66abedf0
移除日志设置与冗余代码，优化导入、类型提示及OCR后端管理 统一调整各文件模块导入路径为绝对导入 调整导入路径，移除部分导入，优化日志及注释 升级文档解析器为 Docx2Parser，优化超时与图片处理逻辑
113 lines
4.3 KiB
Python
113 lines
4.3 KiB
Python
import re
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from typing import Callable, Dict, List, Match, Pattern, Union
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from pydantic import BaseModel, Field
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class HeaderTrackerHook(BaseModel):
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"""表头追踪Hook的配置类，支持多种场景的表头识别"""
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start_pattern: Pattern[str] = Field(
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description="表头开始匹配（正则表达式或字符串）"
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)
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end_pattern: Pattern[str] = Field(description="表头结束匹配（正则表达式或字符串）")
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extract_header_fn: Callable[[Match[str]], str] = Field(
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default=lambda m: m.group(0),
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description="从开始匹配结果中提取表头内容的函数（默认取匹配到的整个内容）",
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)
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priority: int = Field(default=0, description="优先级（多个配置时，高优先级先匹配）")
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case_sensitive: bool = Field(
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default=True, description="是否大小写敏感（仅当传入字符串pattern时生效）"
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)
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def __init__(
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self,
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start_pattern: Union[str, Pattern[str]],
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end_pattern: Union[str, Pattern[str]],
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**kwargs,
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):
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flags = 0 if kwargs.get("case_sensitive", True) else re.IGNORECASE
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if isinstance(start_pattern, str):
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start_pattern = re.compile(start_pattern, flags | re.DOTALL)
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if isinstance(end_pattern, str):
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end_pattern = re.compile(end_pattern, flags | re.DOTALL)
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super().__init__(
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start_pattern=start_pattern,
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end_pattern=end_pattern,
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**kwargs,
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)
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# 初始化表头Hook配置（提供默认配置：支持Markdown表格、代码块）
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DEFAULT_CONFIGS = [
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# 代码块配置（```开头，```结尾）
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# HeaderTrackerHook(
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# # 代码块开始（支持语言指定）
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# start_pattern=r"^\s*```(\w+).*(?!```$)",
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# # 代码块结束
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# end_pattern=r"^\s*```.*$",
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# extract_header_fn=lambda m: f"```{m.group(1)}" if m.group(1) else "```",
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# priority=20, # 代码块优先级高于表格
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# case_sensitive=True,
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# ),
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# Markdown表格配置（表头带下划线）
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HeaderTrackerHook(
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# 表头行 + 分隔行
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start_pattern=r"^\s*(?:\|[^|\n]*)+[\r\n]+\s*(?:\|\s*:?-{3,}:?\s*)+\|?[\r\n]+$",
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# 空行或非表格内容
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end_pattern=r"^\s*$|^\s*[^|\s].*$",
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priority=15,
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case_sensitive=False,
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),
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]
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DEFAULT_CONFIGS.sort(key=lambda x: -x.priority)
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# 定义Hook状态数据结构
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class HeaderTracker(BaseModel):
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"""表头追踪 Hook 的状态类"""
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header_hook_configs: List[HeaderTrackerHook] = Field(default=DEFAULT_CONFIGS)
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active_headers: Dict[int, str] = Field(default_factory=dict)
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ended_headers: set[int] = Field(default_factory=set)
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def update(self, split: str) -> Dict[int, str]:
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"""检测当前split中的表头开始/结束，更新Hook状态"""
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new_headers: Dict[int, str] = {}
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# 1. 检查是否有表头结束标记
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for config in self.header_hook_configs:
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if config.priority in self.active_headers and config.end_pattern.search(
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split
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):
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self.ended_headers.add(config.priority)
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del self.active_headers[config.priority]
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# 2. 检查是否有新的表头开始标记（只处理未活跃且未结束的）
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for config in self.header_hook_configs:
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if (
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config.priority not in self.active_headers
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and config.priority not in self.ended_headers
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):
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match = config.start_pattern.search(split)
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if match:
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header = config.extract_header_fn(match)
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self.active_headers[config.priority] = header
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new_headers[config.priority] = header
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# 3. 检查是否所有活跃表头都已结束（清空结束标记）
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if not self.active_headers:
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self.ended_headers.clear()
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return new_headers
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def get_headers(self) -> str:
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"""获取当前所有活跃表头的拼接文本（按优先级排序）"""
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# 按优先级降序排列表头
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sorted_headers = sorted(self.active_headers.items(), key=lambda x: -x[0])
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return (
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"\n".join([header for _, header in sorted_headers])
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if sorted_headers
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else ""
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)
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