xref: /foundation/filemanagement/file_api/interfaces/kits/cj/src/randomAccessFile_impl.h

/*
 * Copyright (c) 2024 Huawei Device Co., Ltd.
 * Licensed 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.
 */

#ifndef OHOS_FILE_FS_RANDOMACCESSFILE_IMPL_H
#define OHOS_FILE_FS_RANDOMACCESSFILE_IMPL_H

#include "utils.h"
#include "uni_error.h"
#include "ffi_remote_data.h"
#include "cj_common_ffi.h"
#include "randomaccessfile_entity.h"

#include <cstdint>
#include <string>

namespace OHOS {
namespace CJSystemapi {
class RandomAccessFileImpl : public OHOS::FFI::FFIData {
public:
    explicit RandomAccessFileImpl(std::shared_ptr<OHOS::FileManagement::ModuleFileIO::RandomAccessFileEntity> entity);
    int32_t GetFd();
    int64_t GetFPointer();
    void SetFilePointerSync(int64_t fp);
    void CloseSync();
    std::tuple<int32_t, int64_t> WriteSync(char* buf, size_t len, int64_t offset);
    std::tuple<int32_t, int64_t> ReadSync(char* buf, size_t len, int64_t offset);

    OHOS::FFI::RuntimeType* GetRuntimeType() override { return GetClassType(); }
private:
    std::shared_ptr<OHOS::FileManagement::ModuleFileIO::RandomAccessFileEntity> entity_;

    friend class OHOS::FFI::RuntimeType;
    friend class OHOS::FFI::TypeBase;
    static OHOS::FFI::RuntimeType* GetClassType()
    {
        static OHOS::FFI::RuntimeType runtimeType =
            OHOS::FFI::RuntimeType::Create<OHOS::FFI::FFIData>("RandomAccessFileImpl");
        return &runtimeType;
    }
};
} // OHOS::FileManagement::ModuleFileIO
}

#endif // OHOS_FILE_FS_IMPL_H