hdf5 test

tools/test/tst_hdf.cpp

@@ -3,8 +3,8 @@
  * @author Tobias Weber <tobias.weber@tum.de>
  * @date 9-apr-17
  * @license GPLv2
- * 
- * gcc -lstdc++ -o tst_hdf tst_hdf.cpp -lstdc++ -lhdf5
+ *
+ * gcc -o tst_hdf tst_hdf.cpp -lstdc++ -lhdf5
  *
  * ----------------------------------------------------------------------------
  * Takin (inelastic neutron scattering software package)
@@ -76,7 +76,7 @@ int main()
 
 
 	hid_t file2 = ::H5Fopen("tst.hdf", H5F_ACC_RDONLY, H5P_DEFAULT);
-	if(file1 < 0)
+	if(file2 < 0)
 	{
 		std::cerr << "Cannot open file." << std::endl;
 		return -1;

tools/test/tst_hdf2.cpp

+/**
+ * hdf test
+ * @author Tobias Weber <tweber@ill.fr>
+ * @date 12-nov-21
+ * @license GPLv2
+ *
+ * Reference: https://support.hdfgroup.org/HDF5/doc1.6/UG/11_Datatypes.html
+ *
+ * g++ -o tst_hdf2 tst_hdf2.cpp -lhdf5_serial
+ *
+ * ----------------------------------------------------------------------------
+ * Takin (inelastic neutron scattering software package)
+ * Copyright (C) 2017-2021  Tobias WEBER (Institut Laue-Langevin (ILL),
+ *                          Grenoble, France).
+ * Copyright (C) 2013-2017  Tobias WEBER (Technische Universitaet Muenchen
+ *                          (TUM), Garching, Germany).
+ *
+ * This program 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; version 2 of the License.
+ *
+ * This program 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 this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ * ----------------------------------------------------------------------------
+ */
+
+#include <hdf5/serial/hdf5.h>
+#include <iostream>
+#include <vector>
+
+
+int main(int argc, char **argv)
+{
+	if(argc <= 1)
+	{
+		std::cerr << "Please specify a nexus/hdf5 file." << std::endl;
+		return -1;
+	}
+
+	hid_t file = ::H5Fopen(argv[1], H5F_ACC_RDONLY, H5P_DEFAULT);
+	if(file < 0)
+	{
+		std::cerr << "Cannot open file \"" << argv[1] << "\"." << std::endl;
+		return -1;
+	}
+
+	hid_t data = ::H5Dopen(file, "/entry0/data_scan/scanned_variables/variables_names/name", H5P_DEFAULT);
+	if(data < 0)
+	{
+		std::cerr << "Cannot open data." << std::endl;
+		return -1;
+	}
+	hid_t set = ::H5Dget_space(data);
+	if(set < 0)
+	{
+		std::cerr << "Cannot create data set." << std::endl;
+		return -1;
+	}
+
+	int iRank = ::H5Sget_simple_extent_ndims(set);
+	std::vector<hsize_t> vecDim(iRank);
+	::H5Sget_simple_extent_dims(set, vecDim.data(), 0);
+	::H5Sclose(set);
+	std::cout << "Rank: " << iRank << ", dims: ";
+	for(hsize_t iDim : vecDim)
+		std::cout << iDim << ", ";
+	std::cout << std::endl;
+
+	hid_t type_id = ::H5Tcopy(H5T_C_S1);
+	::H5Tset_size(type_id, H5T_VARIABLE);
+
+	hsize_t num_strings = vecDim[0];
+	//hvl_t *str = new hvl_t[num_strings];
+	const char **str = new const char*[num_strings];
+	if(::H5Dread(data, type_id, H5S_ALL, H5S_ALL, H5P_DEFAULT, str) < 0)
+	{
+		std::cerr << "Cannot read data." << std::endl;
+		return -1;
+	}
+
+	for(hsize_t i=0; i<num_strings; ++i)
+	{
+		std::cout << "String " << i << ": " << str[i] << std::endl;
+	}
+
+	delete[] str;
+
+	::H5Dclose(data);
+	::H5Fclose(file);
+
+	::H5close();
+	return 0;
+}