94 lines
2.5 KiB
C
94 lines
2.5 KiB
C
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/*
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* Copyright (C) 2022, KylinSoft Co., Ltd.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*
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* Authors: jixiaoxu <jixiaoxu@kylinos.cn>
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*
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*/
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#ifndef STORAGEBASE_H
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#define STORAGEBASE_H
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#include <string>
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#include <vector>
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#include <fcntl.h>
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#include <unistd.h>
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#include <sys/mman.h>
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#include <sys/stat.h>
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#include "Md5.hpp"
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#include "StringUtil.hpp"
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#include "cedar.h"
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using namespace std;
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struct CacheFileHeaderBase { //todo 字节对齐
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char md5_hex[32] = {};
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uint32_t elements_num = 0;
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uint32_t elements_size = 0;
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uint32_t dat_size = 0;
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};
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template<const bool ordered = false, typename cache_file_header = CacheFileHeaderBase>
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class StorageBase
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{
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public:
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typedef cache_file_header header_type;
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StorageBase(const vector<string> file_paths, string dat_cache_path = "");
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virtual void Init();
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virtual string Find(const string &key);
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virtual bool Contains(string &word);
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virtual bool IsMultiTone(const string &word);
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virtual int GetTotalDictSize() const;
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virtual void LoadSourceFile(const string &dat_cache_file, const string &md5) = 0;
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virtual ~StorageBase();
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cedar::da<int, -1, -2, ordered> * GetDoubleArrayDataTrie();
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const void * GetDataTrieArray();
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int GetDataTrieSize();
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int GetDataTrieTotalSize();
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cache_file_header * GetCacheFileHeaderPtr();
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private:
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StorageBase();
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StorageBase(const StorageBase&);
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StorageBase& operator = (const StorageBase&);
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bool InitAttachDat(const string &dat_cache_file, const string &md5);
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vector<string> m_file_paths;
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string m_dat_cache_path;
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cedar::da<int, -1, -2, ordered> * m_double_array_data_trie = nullptr;
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const char * m_elements_ptr = nullptr;
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int m_mmap_fd = -1;
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int m_mmap_length = 0;
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char * m_mmap_addr = nullptr;
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int m_total_dict_size = 0;
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};
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inline string CalcFileListMD5(const vector<string> &files_list, int & file_size_sum);
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#include "storage-base.cpp"
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#endif // STORAGEBASE_H
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