void h5_read(group g, std::string const& name, std::string& value) { dataset ds = g.open_dataset(name); h5::dataspace d_space = H5Dget_space(ds); int rank = H5Sget_simple_extent_ndims(d_space); if (rank != 0) TRIQS_RUNTIME_ERROR << "Reading a string and got rank !=0"; size_t size = H5Dget_storage_size(ds); datatype strdatatype = H5Tcopy(H5T_C_S1); H5Tset_size(strdatatype, size); //auto status = H5Tset_size(strdatatype, size); // auto status = H5Tset_size (strdatatype, H5T_VARIABLE); std::vector<char> buf(size + 1, 0x00); auto err = H5Dread(ds, strdatatype, H5S_ALL, H5S_ALL, H5P_DEFAULT, &buf[0]); if (err < 0) TRIQS_RUNTIME_ERROR << "Error reading the string named" << name << " in the group" << g.name(); value = ""; value.append(&(buf.front())); }
void h5_write(group g, std::string const& name, std::string const& value) { datatype strdatatype = H5Tcopy(H5T_C_S1); // auto status = H5Tset_size (strdatatype, H5T_VARIABLE); //auto status = H5Tset_size(strdatatype, value.size() + 1); H5Tset_size(strdatatype, value.size() + 1); dataspace space = H5Screate(H5S_SCALAR); dataset ds = g.create_dataset(name, strdatatype, space); auto err = H5Dwrite(ds, strdatatype, H5S_ALL, H5S_ALL, H5P_DEFAULT, (void*)(value.c_str())); if (err < 0) TRIQS_RUNTIME_ERROR << "Error writing the string named" << name << " in the group" << g.name(); }