--- /dev/null
+/*
+ * A general structure for extracting hierarchical data from the devices;
+ * typically key-value pairs, but allows for more rich data as well
+ *
+ * Copyright (C) 2015 by Erkki Seppälä <flux@modeemi.fi>
+ *
+ * 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, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <stdio.h>
+
+#include "data.h"
+
+int main()
+{
+ data_t *data = data_make("label" , "", DATA_STRING, "1.2.3",
+ "house_code" , "House Code", DATA_INT, 42,
+ "temp" , "Temperature", DATA_DOUBLE, 99.9,
+ "array" , "Array", DATA_ARRAY, data_array(2, DATA_STRING, (char*[2]){"hello", "world"}),
+ "array2" , "Array 2", DATA_ARRAY, data_array(2, DATA_INT, (int[2]){4, 2}),
+ "array3" , "Array 3", DATA_ARRAY, data_array(2, DATA_ARRAY, (data_array_t*[2]){
+ data_array(2, DATA_INT, (int[2]){4, 2}),
+ data_array(2, DATA_INT, (int[2]){5, 5}) }),
+ "data" , "Data", DATA_DATA, data_make("Hello", "hello", DATA_STRING, "world", NULL),
+ NULL);
+ const char *fields[] = { "label", "house_code", "temp", "array", "array2", "array3", "data", "house_code" };
+ data_print(data, stdout, &data_json_printer, NULL); fprintf(stdout, "\n");
+ data_print(data, stdout, &data_kv_printer, NULL);
+ void *csv_aux = data_csv_init(fields, sizeof fields / sizeof *fields);
+ data_print(data, stdout, &data_csv_printer, csv_aux);
+ data_csv_free(csv_aux);
+ data_free(data);
+}