python/search_engine.h

#pragma once
#include <xapian.h>
#include <cppjieba/Jieba.hpp>
#include <string>
#include <vector>
#include <memory>

struct SearchResult {
    std::string path;
    std::string snippet;
    std::vector<size_t> positions;
    double score;
};

class SearchEngine {
public:
    SearchEngine(const std::string& db_path);
    ~SearchEngine();

    // 添加文档到索引
    void addDocument(const std::string& path, const std::string& content);
    
    // 搜索文档
    std::vector<SearchResult> search(const std::string& query, size_t limit = 10);
    
    // 提交更改
    void commit();

    enum class SortField {
        RELEVANCE,
        PATH,
        SIZE,
        MODIFIED_TIME
    };

    enum class SortOrder {
        ASC,
        DESC
    };

    struct SearchOptions {
        size_t limit = 10;
        size_t offset = 0;
        SortField sort_field = SortField::RELEVANCE;
        SortOrder sort_order = SortOrder::DESC;
        std::string file_type;
    };

    std::vector<SearchResult> search(
        const std::string& query,
        const SearchOptions& options
    );

private:
    std::unique_ptr<Xapian::WritableDatabase> db_;
    std::unique_ptr<Xapian::TermGenerator> term_gen_;
    std::unique_ptr<cppjieba::Jieba> jieba_;
    
    // 分词处理
    std::string tokenize(const std::string& text);
    
    // 获取高亮片段
    std::string getSnippet(const std::string& content, const std::string& query);
};