public static (int success, long CreatedgroupId) WriteStrings(long groupId, string name, IEnumerable <string> strs)
{
// create UTF-8 encoded test datasets
long datatype = H5T.create(H5T.class_t.STRING, H5T.VARIABLE);
H5T.set_cset(datatype, H5T.cset_t.ASCII);
H5T.set_strpad(datatype, H5T.str_t.NULLTERM);
int strSz = strs.Count();
long spaceId = H5S.create_simple(1, new[] { (ulong)strSz }, null);
string normalizedName = Hdf5Utils.NormalizedName(name);
var datasetId = Hdf5Utils.GetDatasetId(groupId, normalizedName, datatype, spaceId);
if (datasetId == -1L)
{
return(-1, -1L);
}
GCHandle[] hnds = new GCHandle[strSz];
IntPtr[] wdata = new IntPtr[strSz];
int cntr = 0;
foreach (string str in strs)
{
hnds[cntr] = GCHandle.Alloc(
Encoding.UTF8.GetBytes(str),
GCHandleType.Pinned);
wdata[cntr] = hnds[cntr].AddrOfPinnedObject();
cntr++;
}
var hnd = GCHandle.Alloc(wdata, GCHandleType.Pinned);
var result = H5D.write(datasetId, datatype, H5S.ALL, H5S.ALL,
H5P.DEFAULT, hnd.AddrOfPinnedObject());
hnd.Free();
for (int i = 0; i < strSz; ++i)
{
hnds[i].Free();
}
H5D.close(datasetId);
H5S.close(spaceId);
H5T.close(datatype);
return(result, datasetId);
}