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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Copyright by The HDF Group. *
* Copyright by the Board of Trustees of the University of Illinois. *
* All rights reserved. *
* *
* This file is part of HDF5. The full HDF5 copyright notice, including *
* terms governing use, modification, and redistribution, is contained in *
* the files COPYING and Copyright.html. COPYING can be found at the root *
* of the source code distribution tree; Copyright.html can be found at the *
* root level of an installed copy of the electronic HDF5 document set and *
* is linked from the top-level documents page. It can also be found at *
* http://hdfgroup.org/HDF5/doc/Copyright.html. If you do not have *
* access to either file, you may request a copy from help@hdfgroup.org. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*
* Programmer: Quincey Koziol <koziol@ncsa.uiuc.edu>
* Saturday, April 17, 2004
*
* Purpose: Create a dataset with a null dataspace and an attribute
* with a null dataspace.
* This program is used to create the test file `tnullspace.h5' which
* has dataspaces stored in the newer (version 2) style in the object headers.
* To build the test file, this program MUST be compiled and linked with
* the hdf5-1.7+ series of libraries and the generated test file must be
* put into the 'test' directory in the 1.6.x branch of the library.
*/
#include "hdf5.h"
#include <assert.h>
#define NULLFILE "tnullspace.h5"
#define NULLDATASET "null_dataset"
#define NULLATTR "null_attribute"
int
main(void)
{
hid_t fid; /* File ID */
hid_t gid; /* Group ID */
hid_t sid; /* Dataspace ID */
hid_t did; /* Dataset ID */
hid_t attr; /* Attribute ID */
herr_t ret; /* Generic return value */
/* Create the file */
fid = H5Fcreate(NULLFILE, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
assert(fid>0);
sid = H5Screate(H5S_NULL);
assert(sid>0);
/* Create dataset */
did = H5Dcreate(fid, NULLDATASET, H5T_NATIVE_UINT, sid, H5P_DEFAULT);
assert(did>0);
/* Close the dataset */
ret = H5Dclose(did);
assert(ret>=0);
/* Open the root group */
gid = H5Gopen2(fid, "/", H5P_DEFAULT);
assert(gid > 0);
/* Create an attribute for the group */
attr=H5Acreate(gid,NULLATTR,H5T_NATIVE_INT,sid,H5P_DEFAULT);
assert(attr>0);
/* Close attribute */
ret=H5Aclose(attr);
assert(ret>=0);
/* Close the group */
ret = H5Gclose(gid);
assert(ret>=0);
/* Close the dataspace */
ret = H5Sclose(sid);
assert(ret>=0);
/* Close the file */
ret = H5Fclose(fid);
assert(ret>=0);
return 0;
}
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