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#include <hdf5.h>
#define FILE "iterate.h5"
#define FALSE 0
/* 1-D dataset with fixed dimensions */
#define SPACE1_NAME "Space1"
#define SPACE1_RANK 1
#define SPACE1_DIM1 4
herr_t file_info(hid_t loc_id, const char *name, void *opdata);
/* Operator function */
int
main(void) {
hid_t file; /* HDF5 File IDs */
hid_t dataset; /* Dataset ID */
hid_t group; /* Group ID */
hid_t sid; /* Dataspace ID */
hid_t tid; /* Datatype ID */
hsize_t dims[] = {SPACE1_DIM1};
herr_t ret; /* Generic return value */
/* Compound datatype */
typedef struct s1_t {
unsigned int a;
unsigned int b;
float c;
} s1_t;
/* Create file */
file = H5Fcreate(FILE, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
/* Create dataspace for datasets */
sid = H5Screate_simple(SPACE1_RANK, dims, NULL);
/* Create a group */
group=H5Gcreate(file,"Group1",-1);
/* Close a group */
ret = H5Gclose(group);
/* Create a dataset */
dataset=H5Dcreate(file,"Dataset1",H5T_STD_U32LE,sid,H5P_DEFAULT);
/* Close Dataset */
ret = H5Dclose(dataset);
/* Create a datatype */
tid = H5Tcreate (H5T_COMPOUND, sizeof(s1_t));
/* Insert fields */
ret=H5Tinsert (tid, "a", HOFFSET(s1_t,a), H5T_NATIVE_INT);
ret=H5Tinsert (tid, "b", HOFFSET(s1_t,b), H5T_NATIVE_INT);
ret=H5Tinsert (tid, "c", HOFFSET(s1_t,c), H5T_NATIVE_FLOAT);
/* Save datatype for later */
ret=H5Tcommit (file, "Datatype1", tid);
/* Close datatype */
ret = H5Tclose(tid);
/* Iterate through the file to see members of the root group */
printf(" Objects in the root group are:\n");
printf("\n");
H5Giterate(file, "/", NULL, file_info, NULL);
/* Close file */
ret = H5Fclose(file);
return 0;
}
/*
* Operator function.
*/
herr_t file_info(hid_t loc_id, const char *name, void *opdata)
{
H5G_stat_t statbuf;
/*
* Get type of the object and display its name and type.
* The name of the object is passed to this function by
* the Library. Some magic :-)
*/
H5Gget_objinfo(loc_id, name, FALSE, &statbuf);
switch (statbuf.type) {
case H5G_GROUP:
printf(" Object with name %s is a group \n", name);
break;
case H5G_DATASET:
printf(" Object with name %s is a dataset \n", name);
break;
case H5G_TYPE:
printf(" Object with name %s is a named datatype \n", name);
break;
default:
printf(" Unable to identify an object ");
}
return 0;
}
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