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RocksDB for Erlang

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rocksdb c_src sst_file_reader.h
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c_src/sst_file_reader.h 

// Copyright (c) 2018-2025 Benoit Chesneau

//

// This file is provided to you under the Apache License,

// Version 2.0 (the "License"); you may not use this file

// except in compliance with the License.  You may obtain

// a copy of the License at

//

//   http://www.apache.org/licenses/LICENSE-2.0

//

// Unless required by applicable law or agreed to in writing,

// software distributed under the License is distributed on an

// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY

// KIND, either express or implied.  See the License for the

// specific language governing permissions and limitations

// under the License.

//



#pragma once



#include <memory>



#include "erl_nif.h"



namespace rocksdb {

    class SstFileReader;

}



namespace erocksdb {



  class SstFileReaderObject {

    protected:

      static ErlNifResourceType* m_SstFileReader_RESOURCE;



    public:



      explicit SstFileReaderObject(std::unique_ptr<rocksdb::SstFileReader> reader);



      ~SstFileReaderObject();



      rocksdb::SstFileReader* reader();



      static void CreateSstFileReaderType(ErlNifEnv * Env);

      static void SstFileReaderResourceCleanup(ErlNifEnv *Env, void * Arg);



      static SstFileReaderObject * CreateSstFileReaderResource(std::unique_ptr<rocksdb::SstFileReader> reader);

      static SstFileReaderObject * RetrieveSstFileReaderResource(ErlNifEnv * Env, const ERL_NIF_TERM & term);



    private:

      std::unique_ptr<rocksdb::SstFileReader> reader_;

  };



  // NIF functions

  ERL_NIF_TERM SstFileReaderOpen(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);

  ERL_NIF_TERM SstFileReaderIterator(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);

  ERL_NIF_TERM SstFileReaderGetTableProperties(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);

  ERL_NIF_TERM SstFileReaderVerifyChecksum(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);

  ERL_NIF_TERM ReleaseSstFileReader(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);



}