HDF5Auxiliary.hpp

/* Copyright 2017-2025 Fabian Koller, Felix Schmitt, Axel Huebl, Luca Fedeli
 *
 * This file is part of openPMD-api.
 *
 * openPMD-api is free software: you can redistribute it and/or modify
 * it under the terms of of either the GNU General Public License or
 * the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * openPMD-api 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 and the GNU Lesser General Public License
 * for more details.
 *
 * You should have received a copy of the GNU General Public License
 * and the GNU Lesser General Public License along with openPMD-api.
 * If not, see <http://www.gnu.org/licenses/>.
 */
#pragma once
 
#include "openPMD/backend/Attribute.hpp"
#include "openPMD/backend/Writable.hpp"
#include "openPMD/config.hpp"
 
#include <hdf5.h>
 
#include <map>
#include <string>
#include <unordered_map>
#include <utility>
 
namespace openPMD
{
struct GetH5DataType
{
    std::unordered_map<std::string, hid_t> m_userTypes;
 
    GetH5DataType(std::unordered_map<std::string, hid_t> userTypes)
        : m_userTypes{std::move(userTypes)}
    {}
 
    hid_t operator()(Attribute const &att);
};
 
hid_t getH5DataSpace(Attribute const &att);
 
std::string concrete_h5_file_position(Writable *w);

std::vector<hsize_t>
getOptimalChunkDims(std::vector<hsize_t> const &dims, size_t const typeSize);
} // namespace openPMD