3
        sprintf(gname, "Group_%d", i);

        /* Add the name to the list of objects in the root group */
        HDstrcpy(names[i].name, gname);
        names[i].type = H5O_TYPE_GROUP;

        /* Create a group */
        group = H5Gcreate2(file, gname, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
        CHECK(group, FAIL, "H5Gcreate2");

        /* Close a group */
        ret = H5Gclose(group);
        CHECK(ret, FAIL, "H5Gclose");
    } /* end for */

    /* Create a dataset  */
    dataset = H5Dcreate2(file, "Dataset1", H5T_STD_U32LE, sid, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
    CHECK(dataset, FAIL, "H5Dcreate2");

    /* Add the name to the list of objects in the root group */
    HDstrcpy(names[ITER_NGROUPS].name, "Dataset1");
    names[ITER_NGROUPS].type = H5O_TYPE_DATASET;

    /* Close Dataset */
    ret = H5Dclose(dataset);
    CHECK(ret, FAIL, "H5Dclose");

    /* Close Dataspace */
    ret = H5Sclose(sid);
    CHECK(ret, FAIL, "H5Sclose");

    /* Create a datatype */
    tid = H5Tcreate(H5T_COMPOUND, sizeof(s1_t));
    CHECK(tid, FAIL, "H5Tcreate");

    /* Insert fields */
    ret = H5Tinsert(tid, "a", HOFFSET(s1_t, a), H5T_NATIVE_INT);
    CHECK(ret, FAIL, "H5Tinsert");

    ret = H5Tinsert(tid, "b", HOFFSET(s1_t, b), H5T_NATIVE_INT);
    CHECK(ret, FAIL, "H5Tinsert");

    ret = H5Tinsert(tid, "c", HOFFSET(s1_t, c), H5T_NATIVE_FLOAT);
    CHECK(ret, FAIL, "H5Tinsert");

    /* Save datatype for later */
    ret = H5Tcommit2(file, "Datatype1", tid, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
    CHECK(ret, FAIL, "H5Tcommit2");

    /* Add the name to the list of objects in the root group */
    HDstrcpy(names[ITER_NGROUPS + 1].name, "Datatype1");
    names[ITER_NGROUPS + 1].type = H5O_TYPE_NAMED_DATATYPE;

    /* Close datatype */
    ret = H5Tclose(tid);
    CHECK(ret, FAIL, "H5Tclose");

    /* Need to sort the names in the root group, cause that's what the library does */
    HDqsort(names, (size_t)(ITER_NGROUPS + 2), sizeof(iter_info), iter_strcmp2);

    /* Iterate through the file to see members of the root group */
    curr_name = &names[0];
    ret = H5Literate(file, H5_INDEX_NAME, H5_ITER_INC, NULL, liter_cb2, curr_name);
    CHECK(ret, FAIL, "H5Literate");
    for(i = 1; i < 100; i++) {
        hsize_t idx = i;

        curr_name = &names[i];
        ret = H5Literate(file, H5_INDEX_NAME, H5_ITER_INC, &idx, liter_cb2, curr_name);
        CHECK(ret, FAIL, "H5Literate");
    } /* end for */

    /* Close file */
    ret = H5Fclose(file);
    CHECK(ret, FAIL, "H5Fclose");
} /* test_iterate_group_large() */

/****************************************************************
**
**  test_grp_memb_funcs(): Test group member information
**                         functionality
**
****************************************************************/
static void test_grp_memb_funcs(hid_t fapl)
{
    hid_t file;             /* File ID */
    hid_t dataset;          /* Dataset ID */
    hid_t datatype;         /* Common datatype ID */
    hid_t filespace;        /* Common dataspace ID */
    hid_t root_group,grp;   /* Root group ID */
    int i;                  /* counting variable */
    char name[NAMELEN];     /* temporary name buffer */
    char *dnames[NDATASETS+2];/* Names of the datasets created */
    char *obj_names[NDATASETS+2];/* Names of the objects in group */
    char dataset_name[NAMELEN];  /* dataset name */
    ssize_t name_len;       /* Length of object's name */
    H5G_info_t ginfo;       /* Buffer for querying object's info */
    herr_t ret = SUCCEED;	/* Generic return value */

    /* Output message about test being performed */
    MESSAGE(5, ("Testing Group Member Information Functionality\n"));

    /* Create the test file with the datasets */
    file = H5Fcreate(DATAFILE, H5F_ACC_TRUNC, H5P_DEFAULT, fapl);
    CHECK(file, FAIL, "H5Fcreate");

    datatype = H5Tcopy(H5T_NATIVE_INT);
    CHECK(datatype, FAIL, "H5Tcopy");

    filespace = H5Screate(H5S_SCALAR);
    CHECK(filespace, FAIL, "H5Screate");

    for(i = 0; i < NDATASETS; i++) {
        sprintf(name, "Dataset %d", i);
        dataset = H5Dcreate2(file, name, datatype, filespace, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
        CHECK(dataset, FAIL, "H5Dcreate2");

        /* Keep a copy of the dataset names around for later */
        dnames[i] = HDstrdup(name);
        CHECK(dnames[i], NULL, "strdup");

        ret = H5Dclose(dataset);
        CHECK(ret, FAIL, "H5Dclose");
    } /* end for */

    /* Create a group and named datatype under root group for testing */
    grp = H5Gcreate2(file, "grp", H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
    CHECK(ret, FAIL, "H5Gcreate2");

    dnames[NDATASETS] = HDstrdup("grp");
    CHECK(dnames[NDATASETS], NULL, "strdup");

    ret = H5Tcommit2(file, "dtype", datatype, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
    CHECK(ret, FAIL, "H5Tcommit2");

    dnames[NDATASETS + 1] = HDstrdup("dtype");
    CHECK(dnames[NDATASETS], NULL, "strdup");

    /* Close everything up */
    ret = H5Tclose(datatype);
    CHECK(ret, FAIL, "H5Tclose");

    ret = H5Gclose(grp);
    CHECK(ret, FAIL, "H5Gclose");

    ret = H5Sclose(filespace);
    CHECK(ret, FAIL, "H5Sclose");

    ret = H5Fclose(file);
    CHECK(ret, FAIL, "H5Fclose");

    /* Sort the dataset names */
    HDqsort(dnames, (size_t)(NDATASETS + 2), sizeof(char *), iter_strcmp);

    /* Iterate through the datasets in the root group in various ways */
    file = H5Fopen(DATAFILE, H5F_ACC_RDONLY, fapl);
    CHECK(file, FAIL, "H5Fopen");

    /* These two functions, H5Oget_info_by_idx and H5Lget_name_by_idx, actually
     * iterate through B-tree for group members in internal library design.
     */
    root_group = H5Gopen2(file, "/", H5P_DEFAULT);
    CHECK(root_group, FAIL, "H5Gopen2");

    ret = H5Gget_info(root_group, &ginfo);
    CHECK(ret, FAIL, "H5Gget_info");
    VERIFY(ginfo.nlinks, (NDATASETS + 2), "H5Gget_info");

    for(i = 0; i < (int)ginfo.nlinks; i++) {
        H5O_info_t oinfo;               /* Object info */

        /* Test with NULL for name, to query length */
        name_len = H5Lget_name_by_idx(root_group, ".", H5_INDEX_NAME, H5_ITER_INC, (hsize_t)i, NULL, (size_t)NAMELEN, H5P_DEFAULT);
        CHECK(name_len, FAIL, "H5Lget_name_by_idx");

        ret = (herr_t)H5Lget_name_by_idx(root_group, ".", H5_INDEX_NAME, H5_ITER_INC, (hsize_t)i, dataset_name, (size_t)(name_len + 1), H5P_DEFAULT);
        CHECK(ret, FAIL, "H5Lget_name_by_idx");

        /* Double-check that the length is the same */
        VERIFY(ret, name_len, "H5Lget_name_by_idx");

        /* Keep a copy of the dataset names around for later */
        obj_names[i] = HDstrdup(dataset_name);
        CHECK(obj_names[i], NULL, "strdup");

        ret = H5Oget_info_by_idx(root_group, ".", H5_INDEX_NAME, H5_ITER_INC, (hsize_t)i, &oinfo, H5P_DEFAULT);
        CHECK(ret, FAIL, "H5Oget_info_by_idx");

        if(!HDstrcmp(dataset_name, "grp"))
            VERIFY(oinfo.type, H5O_TYPE_GROUP, "H5Lget_name_by_idx");
        if(!HDstrcmp(dataset_name, "dtype"))
            VERIFY(oinfo.type, H5O_TYPE_NAMED_DATATYPE, "H5Lget_name_by_idx");
        if(!HDstrncmp(dataset_name, "Dataset", (size_t)7))
            VERIFY(oinfo.type, H5O_TYPE_DATASET, "H5Lget_name_by_idx");
    } /* end for */

    H5E_BEGIN_TRY {
        ret = (herr_t)H5Lget_name_by_idx(root_group, ".", H5_INDEX_NAME, H5_ITER_INC, (hsize_t)(NDATASETS+3), dataset_name, (size_t)NAMELEN, H5P_DEFAULT);
    } H5E_END_TRY;
    VERIFY(ret, FAIL, "H5Lget_name_by_idx");

    /* Sort the dataset names */
    HDqsort(obj_names, (size_t)(NDATASETS + 2), sizeof(char *), iter_strcmp);

    /* Compare object names */
    for(i = 0; i< (int)ginfo.nlinks; i++) {
        ret = HDstrcmp(dnames[i], obj_names[i]);
        VERIFY(ret, 0, "HDstrcmp");
    } /* end for */

    ret = H5Gclose(root_group);
    CHECK(ret, FAIL, "H5Gclose");


    ret = H5Fclose(file);
    CHECK(ret, FAIL, "H5Fclose");

    /* Free the dataset names */
    for(i = 0; i< (NDATASETS + 2); i++) {
        HDfree(dnames[i]);
        HDfree(obj_names[i]);
    } /* end for */
} /* test_grp_memb_funcs() */

/****************************************************************
**
**  test_links(): Test soft and hard link iteration
**
****************************************************************/
static void test_links(hid_t fapl)
{
    hid_t file;             /* File ID */
    char obj_name[NAMELEN]; /* Names of the object in group */
    ssize_t name_len;       /* Length of object's name */
    hid_t    gid, gid1;
    H5G_info_t ginfo;       /* Buffer for querying object's info */
    hsize_t i;
    herr_t ret;		    /* Generic return value */

    /* Output message about test being performed */
    MESSAGE(5, ("Testing Soft and Hard Link Iteration Functionality\n"));

    /* Create the test file with the datasets */
    file = H5Fcreate(DATAFILE, H5F_ACC_TRUNC, H5P_DEFAULT, fapl);
    CHECK(file, FAIL, "H5Fcreate");

    /* create groups */
    gid = H5Gcreate2(file, "/g1", H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
    CHECK(gid, FAIL, "H5Gcreate2");

    gid1 = H5Gcreate2(file, "/g1/g1.1", H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
    CHECK(gid1, FAIL, "H5Gcreate2");

    /* create soft and hard links to the group "/g1". */
    ret = H5Lcreate_soft("something", gid, "softlink", H5P_DEFAULT, H5P_DEFAULT);
    CHECK(ret, FAIL, "H5Lcreate_soft");

    ret = H5Lcreate_hard(gid, "/g1", H5L_SAME_LOC, "hardlink", H5P_DEFAULT, H5P_DEFAULT);
    CHECK(ret, FAIL, "H5Lcreate_hard");

    ret = H5Gget_info(gid, &ginfo);
    CHECK(ret, FAIL, "H5Gget_info");
    VERIFY(ginfo.nlinks, 3, "H5Gget_info");

    /* Test these two functions, H5Oget_info_by_idx and H5Lget_name_by_idx */
    for(i = 0; i < ginfo.nlinks; i++) {
        H5O_info_t oinfo;               /* Object info */
        H5L_info_t linfo;               /* Link info */

        /* Get link name */
        name_len = H5Lget_name_by_idx(gid, ".", H5_INDEX_NAME, H5_ITER_INC, i, obj_name, (size_t)NAMELEN, H5P_DEFAULT);
        CHECK(name_len, FAIL, "H5Lget_name_by_idx");

        /* Get link type */
        ret = H5Lget_info_by_idx(gid, ".", H5_INDEX_NAME, H5_ITER_INC, (hsize_t)i, &linfo, H5P_DEFAULT);
        CHECK(ret, FAIL, "H5Lget_info_by_idx");

        /* Get object type */
        if(linfo.type == H5L_TYPE_HARD) {
            ret = H5Oget_info_by_idx(gid, ".", H5_INDEX_NAME, H5_ITER_INC, (hsize_t)i, &oinfo, H5P_DEFAULT);
            CHECK(ret, FAIL, "H5Oget_info_by_idx");
        } /* end if */

        if(!HDstrcmp(obj_name, "g1.1"))
            VERIFY(oinfo.type, H5O_TYPE_GROUP, "H5Lget_name_by_idx");
        else if(!HDstrcmp(obj_name, "hardlink"))
            VERIFY(oinfo.type, H5O_TYPE_GROUP, "H5Lget_name_by_idx");
        else if(!HDstrcmp(obj_name, "softlink"))
            VERIFY(linfo.type, H5L_TYPE_SOFT, "H5Lget_name_by_idx");
        else
            CHECK(0, 0, "unknown object name");
    } /* end for */

    ret = H5Gclose(gid);
    CHECK(ret, FAIL, "H5Gclose");

    ret = H5Gclose(gid1);
    CHECK(ret, FAIL, "H5Gclose");

    ret = H5Fclose(file);
    CHECK(ret, FAIL, "H5Fclose");
} /* test_links() */

/****************************************************************
**
**  test_iterate(): Main iteration testing routine.
**
****************************************************************/
void
test_iterate(void)
{
    hid_t fapl, fapl2;          /* File access property lists */
    hbool_t new_format;         /* Whether to use the new format or not */
    herr_t ret;		        /* Generic return value */

    /* Output message about test being performed */
    MESSAGE(5, ("Testing Iteration Operations\n"));

    /* Get the default FAPL */
    fapl = H5Pcreate(H5P_FILE_ACCESS);
    CHECK(fapl, FAIL, "H5Pcreate");

    /* Copy the file access property list */
    fapl2 = H5Pcopy(fapl);
    CHECK(fapl2, FAIL, "H5Pcopy");

    /* Set the "use the latest version of the format" bounds for creating objects in the file */
    ret = H5Pset_libver_bounds(fapl2, H5F_LIBVER_LATEST, H5F_LIBVER_LATEST);
    CHECK(ret, FAIL, "H5Pset_libver_bounds");

    /* These next tests use the same file */
    for(new_format = FALSE; new_format <= TRUE; new_format++) {
        test_iter_group(new_format ? fapl2 : fapl, new_format); /* Test group iteration */
        test_iter_group_large(new_format ? fapl2 : fapl);   /* Test group iteration for large # of objects */
        test_iter_attr(new_format ? fapl2 : fapl, new_format);  /* Test attribute iteration */
        test_grp_memb_funcs(new_format ? fapl2 : fapl);     /* Test group member information functions */
        test_links(new_format ? fapl2 : fapl);              /* Test soft and hard link iteration */
    } /* end for */

    /* Close FAPLs */
    ret = H5Pclose(fapl);
    CHECK(ret, FAIL, "H5Pclose");
    ret = H5Pclose(fapl2);
    CHECK(ret, FAIL, "H5Pclose");
}   /* test_iterate() */


/*-------------------------------------------------------------------------
 * Function:	cleanup_iterate
 *
 * Purpose:	Cleanup temporary test files
 *
 * Return:	none
 *
 * Programmer:	Quincey Koziol
 *              April 5, 2000
 *
 * Modifications:
 *
 *-------------------------------------------------------------------------
 */
void
cleanup_iterate(void)
{
    remove(DATAFILE);
}