mirror of
https://github.com/triqs/dft_tools
synced 2024-12-27 06:43:40 +01:00
65 lines
3.1 KiB
C++
65 lines
3.1 KiB
C++
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#include "./opaque_object_h5.hpp"
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namespace triqs { namespace utility {
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std::map<size_t, std::function<_object(std::string const &)>> _object::code_to_deserialization_fnts;
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std::map<size_t, std::function<_object(h5::group const &, std::string const &)>> _object::code_to_h5_read_fnts;
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std::map<hid_t, size_t > _object::h5_type_to_c_equivalence;
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std::map<std::pair<size_t,int>, size_t > _object::code_element_rank_to_code_array;
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std::map<std::string, size_t > _object::h5_scheme_to_code;
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std::map<size_t, std::string > _object::type_code_to_type_name;
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std::map<std::string, size_t > _object::type_name_to_type_code;
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bool _object::initialized = false;
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//-----------------------------------------------------------------------
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void _object::_init() {
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if (initialized) return;
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#define REGISTER_UNSERIALIZE_FUN(r, data, T) _object::register_native_type<T>();
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BOOST_PP_SEQ_FOR_EACH(REGISTER_UNSERIALIZE_FUN, nil , TRIQS_UTIL_OPAQUE_OBJECT_PREDEFINED_CAST);
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#undef REGISTER_UNSERIALIZE_FUN
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initialized = true;
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}
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//-----------------------------------------------------------------------
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void h5_read ( h5::group g, std::string const & name, _object & obj){
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//std::cerr << " read object "<< name << std::endl ;
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using namespace H5;
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if (!g.has_key(name)) TRIQS_RUNTIME_ERROR << "no such "<<name <<" in file ";
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size_t type_hash;
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// First if it is not a subgroup, it is a scalar or a an array
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// TO BE CHECKED
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try {
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H5::DataSet ds = g.open_dataset( name.c_str() );
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hid_t dtype = H5Dget_type(ds.getId());
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hid_t native_type=H5Tget_native_type(dtype, H5T_DIR_DEFAULT);
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if (H5Tget_class(dtype) == H5T_STRING ) { // it is a string
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auto triqs_data_scheme = h5::read_string_attribute(&ds,"TRIQS_HDF5_data_scheme");
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type_hash = (triqs_data_scheme == "") ? _object::type_code<std::string>() : _object::h5_scheme_to_code[triqs_data_scheme];
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}
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else if ((H5Tget_class(dtype) == H5T_INTEGER ) || ((H5Tget_class(dtype) == H5T_FLOAT ) )) {
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int rank = ds.getSpace().getSimpleExtentNdims();
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auto it = _object::h5_type_to_c_equivalence.begin();
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for (;it != _object::h5_type_to_c_equivalence.end();++it) { if (H5Tequal(native_type, it->first)) break;}
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if (it == _object::h5_type_to_c_equivalence.end()) TRIQS_RUNTIME_ERROR << " h5_type_to_c_equivalence : type not found";
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type_hash = it->second;
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if (rank>0) {
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size_t type_hash_element = type_hash;
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auto it2= _object::code_element_rank_to_code_array.find(std::make_pair(type_hash_element,rank));
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if (it2 == _object::code_element_rank_to_code_array.end())
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TRIQS_RUNTIME_ERROR << " code_element_rank_to_code_array : type not found" << rank;
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type_hash = it2->second;
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}
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}
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//else if (H5Tget_class(dtype)==H5T_ARRAY)
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herr_t status = H5Tclose (native_type);
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status = H5Tclose (dtype);
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}
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TRIQS_ARRAYS_H5_CATCH_EXCEPTION;
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obj = _object::code_to_h5_read_fnts[type_hash](g,name);
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}
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}}
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