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- # coding=utf-8
- """
- 频率词配置加载模块
- 负责从配置文件加载频率词规则,支持:
- - 普通词组
- - 必须词(+前缀)
- - 过滤词(!前缀)
- - 全局过滤词([GLOBAL_FILTER] 区域)
- - 最大显示数量(@前缀)
- - 正则表达式(/pattern/ 语法)
- - 显示名称(=> 别名 语法)
- - 组别名([组别名] 语法,作为词组第一行)
- """
- import os
- import re
- from pathlib import Path
- from typing import Dict, List, Tuple, Optional, Union
- def _parse_word(word: str) -> Dict:
- """
- 解析单个词,识别是否为正则表达式,支持显示名称
- Args:
- word: 原始配置行 (e.g. "/京东|刘强东/ => 京东")
- Returns:
- Dict: 包含 word, is_regex, pattern, display_name
- """
- display_name = None
- # 1. 优先处理显示名称 (=>)
- # 先切分出 "配置内容" 和 "显示名称"
- if '=>' in word:
- parts = re.split(r'\s*=>\s*', word, 1)
- word_config = parts[0].strip()
- # 只有当 => 右边有内容时才作为 display_name
- if len(parts) > 1 and parts[1].strip():
- display_name = parts[1].strip()
- else:
- word_config = word.strip()
- # 2. 解析正则表达式
- # 规则:以 / 开头,以 / 结尾(可能跟 flags),中间内容贪婪提取
- # [a-z]*$ 表示允许末尾有 flags (如 i, g),但在下面代码中会被忽略
- regex_match = re.match(r'^/(.+)/[a-z]*$', word_config)
- if regex_match:
- pattern_str = regex_match.group(1)
- try:
- pattern = re.compile(pattern_str, re.IGNORECASE)
-
- return {
- "word": pattern_str,
- "is_regex": True,
- "pattern": pattern,
- "display_name": display_name,
- }
- except re.error as e:
- print(f"Warning: Invalid regex pattern '/{pattern_str}/': {e}")
- pass
- return {
- "word": word_config,
- "is_regex": False,
- "pattern": None,
- "display_name": display_name
- }
- def _word_matches(word_config: Union[str, Dict], title_lower: str) -> bool:
- """
- 检查词是否在标题中匹配
- Args:
- word_config: 词配置(字符串或字典)
- title_lower: 小写的标题
- Returns:
- 是否匹配
- """
- if isinstance(word_config, str):
- # 向后兼容:纯字符串
- return word_config.lower() in title_lower
- if word_config.get("is_regex") and word_config.get("pattern"):
- # 正则匹配
- return bool(word_config["pattern"].search(title_lower))
- else:
- # 子字符串匹配
- return word_config["word"].lower() in title_lower
- def load_frequency_words(
- frequency_file: Optional[str] = None,
- ) -> Tuple[List[Dict], List[str], List[str]]:
- """
- 加载频率词配置
- 配置文件格式说明:
- - 每个词组由空行分隔
- - [GLOBAL_FILTER] 区域定义全局过滤词
- - [WORD_GROUPS] 区域定义词组(默认)
- 词组语法:
- - 普通词:直接写入,任意匹配即可
- - +词:必须词,所有必须词都要匹配
- - !词:过滤词,匹配则排除
- - @数字:该词组最多显示的条数
- Args:
- frequency_file: 频率词配置文件路径,默认从环境变量 FREQUENCY_WORDS_PATH 获取或使用 config/frequency_words.txt,短文件名从 config/custom/keyword/ 查找
- Returns:
- (词组列表, 词组内过滤词, 全局过滤词)
- Raises:
- FileNotFoundError: 频率词文件不存在
- """
- if frequency_file is None:
- frequency_file = os.environ.get(
- "FREQUENCY_WORDS_PATH", "config/frequency_words.txt"
- )
- frequency_path = Path(frequency_file)
- if not frequency_path.exists():
- # 尝试作为短文件名,拼接 config/custom/keyword/ 前缀
- custom_path = Path("config/custom/keyword") / frequency_file
- if custom_path.exists():
- frequency_path = custom_path
- else:
- raise FileNotFoundError(f"频率词文件 {frequency_file} 不存在")
- with open(frequency_path, "r", encoding="utf-8") as f:
- content = f.read()
- word_groups = [group.strip() for group in content.split("\n\n") if group.strip()]
- processed_groups = []
- filter_words = []
- global_filters = []
- # 默认区域(向后兼容)
- current_section = "WORD_GROUPS"
- for group in word_groups:
- # 过滤空行和注释行(# 开头)
- lines = [line.strip() for line in group.split("\n") if line.strip() and not line.strip().startswith("#")]
- if not lines:
- continue
- # 检查是否为区域标记
- if lines[0].startswith("[") and lines[0].endswith("]"):
- section_name = lines[0][1:-1].upper()
- if section_name in ("GLOBAL_FILTER", "WORD_GROUPS"):
- current_section = section_name
- lines = lines[1:] # 移除标记行
- # 处理全局过滤区域
- if current_section == "GLOBAL_FILTER":
- # 直接添加所有非空行到全局过滤列表
- for line in lines:
- # 忽略特殊语法前缀,只提取纯文本
- if line.startswith(("!", "+", "@")):
- continue # 全局过滤区不支持特殊语法
- if line:
- global_filters.append(line)
- continue
- # 处理词组区域
- words = lines
- group_alias = None # 组别名([别名] 语法)
- # 检查第一行是否为组别名(非区域标记)
- if words and words[0].startswith("[") and words[0].endswith("]"):
- potential_alias = words[0][1:-1].strip()
- # 排除区域标记(GLOBAL_FILTER, WORD_GROUPS)
- if potential_alias.upper() not in ("GLOBAL_FILTER", "WORD_GROUPS"):
- group_alias = potential_alias
- words = words[1:] # 移除组别名行
- group_required_words = []
- group_normal_words = []
- group_max_count = 0 # 默认不限制
- for word in words:
- if word.startswith("@"):
- # 解析最大显示数量(只接受正整数)
- try:
- count = int(word[1:])
- if count > 0:
- group_max_count = count
- except (ValueError, IndexError):
- pass # 忽略无效的@数字格式
- elif word.startswith("!"):
- # 过滤词(支持正则语法)
- filter_word = word[1:]
- parsed = _parse_word(filter_word)
- filter_words.append(parsed)
- elif word.startswith("+"):
- # 必须词(支持正则语法)
- req_word = word[1:]
- group_required_words.append(_parse_word(req_word))
- else:
- # 普通词(支持正则语法)
- group_normal_words.append(_parse_word(word))
- if group_required_words or group_normal_words:
- if group_normal_words:
- group_key = " ".join(w["word"] for w in group_normal_words)
- else:
- group_key = " ".join(w["word"] for w in group_required_words)
- # 生成显示名称
- # 优先级:组别名 > 行别名拼接 > 关键词拼接
- if group_alias:
- # 有组别名,直接使用
- display_name = group_alias
- else:
- # 没有组别名,拼接每行的显示名(行别名或关键词本身)
- all_words = group_normal_words + group_required_words
- display_parts = []
- for w in all_words:
- # 优先使用行别名,否则使用关键词本身
- part = w.get("display_name") or w["word"]
- display_parts.append(part)
- # 用 " / " 拼接多个词
- display_name = " / ".join(display_parts) if display_parts else None
- processed_groups.append(
- {
- "required": group_required_words,
- "normal": group_normal_words,
- "group_key": group_key,
- "display_name": display_name, # 可能为 None
- "max_count": group_max_count,
- }
- )
- return processed_groups, filter_words, global_filters
- def matches_word_groups(
- title: str,
- word_groups: List[Dict],
- filter_words: List,
- global_filters: Optional[List[str]] = None
- ) -> bool:
- """
- 检查标题是否匹配词组规则
- Args:
- title: 标题文本
- word_groups: 词组列表
- filter_words: 过滤词列表(可以是字符串列表或字典列表)
- global_filters: 全局过滤词列表
- Returns:
- 是否匹配
- """
- # 防御性类型检查:确保 title 是有效字符串
- if not isinstance(title, str):
- title = str(title) if title is not None else ""
- if not title.strip():
- return False
- title_lower = title.lower()
- # 全局过滤检查(优先级最高)
- if global_filters:
- if any(global_word.lower() in title_lower for global_word in global_filters):
- return False
- # 如果没有配置词组,则匹配所有标题(支持显示全部新闻)
- if not word_groups:
- return True
- # 过滤词检查(兼容新旧格式)
- for filter_item in filter_words:
- if _word_matches(filter_item, title_lower):
- return False
- # 词组匹配检查
- for group in word_groups:
- required_words = group["required"]
- normal_words = group["normal"]
- # 必须词检查
- if required_words:
- all_required_present = all(
- _word_matches(req_item, title_lower) for req_item in required_words
- )
- if not all_required_present:
- continue
- # 普通词检查
- if normal_words:
- any_normal_present = any(
- _word_matches(normal_item, title_lower) for normal_item in normal_words
- )
- if not any_normal_present:
- continue
- return True
- return False
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