dft_tools/triqs/h5/map.hpp

/*******************************************************************************
 *
 * TRIQS: a Toolbox for Research in Interacting Quantum Systems
 *
 * Copyright (C) 2011 by O. Parcollet
 *
 * TRIQS 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.
 *
 * TRIQS 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
 * TRIQS. If not, see <http://www.gnu.org/licenses/>.
 *
 ******************************************************************************/
#pragma once

#include "group.hpp"
#include "string.hpp"
#include <map>

namespace triqs {

 template <typename T>
 std::string get_triqs_hdf5_data_scheme(std::map<std::string,T> const&) {
  using triqs::get_triqs_hdf5_data_scheme;
  return "std::map<string," + get_triqs_hdf5_data_scheme(T()) + ">";
 }

 namespace h5 {

  template<typename T>
  void h5_write (group f, std::string const & name, std::map<std::string,T> const & M) {
    auto gr = f.create_group(name);
    for (auto& pvp : M) h5_write(gr, pvp.first, pvp.second);
  }

  template<typename T>
  void h5_read (group f, std::string const & name, std::map<std::string,T> & M) {
    auto gr = f.open_group(name);
    M.clear();
    for (auto const & x: gr.get_all_dataset_names()) {
      T value;
      h5_read(gr, x, value);
      M.emplace(x, std::move(value));
    }
  }

 }
}