format.cpp

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// Copyright (c) 2019-2024 Simons Foundation
//
// 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.txt
//
// 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.
//
// Authors: Thomas Hahn, Olivier Parcollet, Nils Wentzell
 
#include "./format.hpp"
#include "./group.hpp"
#include "./object.hpp"
#include "./stl/string.hpp"
 
#include <stdexcept>
#include <string>
 
namespace h5 {
 
  void read_hdf5_format(object obj, std::string &s) {
    h5_read_attribute(obj, "Format", s);
 
    // backward compatibility
    if (s == "") { h5_read_attribute(obj, "TRIQS_HDF5_data_scheme", s); }
  }
 
  std::string read_hdf5_format(group g) {
    std::string s;
    read_hdf5_format(g, s); // NOLINT (slicing is intended)
    return s;
  }
 
  void read_hdf5_format_from_key(group g, std::string const &key, std::string &s) {
    h5_read_attribute_from_key(g, key, "Format", s);
 
    // backward compatibility
    if (s == "") { h5_read_attribute_from_key(g, key, "TRIQS_HDF5_data_scheme", s); }
  }
 
  void assert_hdf5_format_as_string(group g, const char *tag_expected, bool ignore_if_absent) {
    auto tag = read_hdf5_format(g);
    if (ignore_if_absent and tag.empty()) return;
    if (tag != tag_expected)
      throw std::runtime_error("Error in assert_hdf5_format_as_string: hdf5_format tag mistmatch: " + tag + " != " + tag_expected);
  }
 
} // namespace h5