/************************************************************

  This example shows how to iterate over group members using
  H5Literate.

 ************************************************************/

#include "hdf5.h"
#include <stdio.h>

#define FILE "h5ex_g_iterate.h5"

/*
 * Operator function to be called by H5Literate.
 */
herr_t op_func(hid_t loc_id, const char *name, const H5L_info_t *info, void *operator_data);

int
main(void)
{
    hid_t  file; /* Handle */
    herr_t status;

    /*
     * Open file.
     */
    file = H5Fopen(FILE, H5F_ACC_RDONLY, H5P_DEFAULT);

    /*
     * Begin iteration.
     */
    printf("Objects in root group:\n");
    status = H5Literate(file, H5_INDEX_NAME, H5_ITER_NATIVE, NULL, op_func, NULL);

    /*
     * Close and release resources.
     */
    status = H5Fclose(file);

    return 0;
}

/************************************************************

  Operator function.  Prints the name and type of the object
  being examined.

 ************************************************************/
herr_t
op_func(hid_t loc_id, const char *name, const H5L_info_t *info, void *operator_data)
{
    herr_t     status;
    H5O_info_t infobuf;

    /*
     * Get type of the object and display its name and type.
     * The name of the object is passed to this function by
     * the Library.
     */
#if H5_VERSION_GE(1, 12, 0) && !defined(H5_USE_110_API) && !defined(H5_USE_18_API) && !defined(H5_USE_16_API)
    status = H5Oget_info_by_name(loc_id, name, &infobuf, H5O_INFO_ALL, H5P_DEFAULT);
#else
    status = H5Oget_info_by_name(loc_id, name, &infobuf, H5P_DEFAULT);
#endif
    switch (infobuf.type) {
        case H5O_TYPE_GROUP:
            printf("  Group: %s\n", name);
            break;
        case H5O_TYPE_DATASET:
            printf("  Dataset: %s\n", name);
            break;
        case H5O_TYPE_NAMED_DATATYPE:
            printf("  Datatype: %s\n", name);
            break;
        default:
            printf("  Unknown: %s\n", name);
    }

    return 0;
}