63 lines
2.3 KiB
C++
63 lines
2.3 KiB
C++
/*
|
|
* Copyright (C) 2022, KylinSoft Co., Ltd.
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <https://www.gnu.org/licenses/>.
|
|
*
|
|
* Authors: jixiaoxu <jixiaoxu@kylinos.cn>
|
|
*
|
|
*/
|
|
#ifndef SegmentTrie_H
|
|
#define SegmentTrie_H
|
|
|
|
#include "storage-base.hpp"
|
|
#include "cppjieba/Unicode.hpp"
|
|
|
|
using namespace cppjieba;
|
|
|
|
const char * const DICT_PATH = DICT_INSTALL_PATH"/jieba.dict.utf8";
|
|
const char * const USER_DICT_PATH = DICT_INSTALL_PATH"/user.dict.utf8";
|
|
|
|
struct DictCacheFileHeader : CacheFileHeaderBase
|
|
{
|
|
double min_weight = 0;
|
|
};
|
|
|
|
class DictTrie : public StorageBase<DatMemElem, false, DictCacheFileHeader>
|
|
{
|
|
public:
|
|
DictTrie(const vector<string> file_paths, string dat_cache_path = "");
|
|
DictTrie(const string& dict_path, const string& user_dict_paths = "", const string & dat_cache_path = "");
|
|
void LoadSourceFile(const string &dat_cache_file, const string &md5) override;
|
|
|
|
const DatMemElem *Find(const string &key) const;
|
|
void FindDatDag(RuneStrArray::const_iterator begin, RuneStrArray::const_iterator end,
|
|
vector<struct DatDag>&res, size_t max_word_len = MAX_WORD_LENGTH) const;
|
|
void FindWordRange(RuneStrArray::const_iterator begin, RuneStrArray::const_iterator end,
|
|
vector<WordRange>& words, size_t max_word_len = MAX_WORD_LENGTH) const;
|
|
bool IsUserDictSingleChineseWord(const Rune& word) const;
|
|
|
|
private:
|
|
DictTrie();
|
|
void PreLoad();
|
|
void LoadDefaultDict(const int &fd, int &write_bytes, int &offset, int &elements_num);
|
|
void LoadUserDict(const int &fd, int &write_bytes, int &offset, int &elements_num);
|
|
double GetMinWeight() const;
|
|
|
|
double m_freq_sum = 0.0;
|
|
double m_min_weight = 3.14e+100;
|
|
unordered_set<Rune> m_user_dict_single_chinese_word;
|
|
};
|
|
|
|
#endif // SegmentTrie_H
|