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Fix issue #2674 #2675

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Apr 12, 2023
Merged

Fix issue #2674 #2675

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16 changes: 10 additions & 6 deletions libhdf5/hdf5open.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1205,29 +1205,33 @@ static int get_quantize_info(NC_VAR_INFO_T *var)
{
hid_t attid;
hid_t datasetid;
htri_t attr_exists;

/* Try to open an attribute of the correct name for quantize
* info. */
datasetid = ((NC_HDF5_VAR_INFO_T *)var->format_var_info)->hdf_datasetid;
attid = H5Aopen_by_name(datasetid, ".", NC_QUANTIZE_BITGROOM_ATT_NAME,
H5P_DEFAULT, H5P_DEFAULT);
attr_exists = H5Aexists(datasetid, NC_QUANTIZE_BITGROOM_ATT_NAME);
attid = attr_exists ? H5Aopen_by_name(datasetid, ".", NC_QUANTIZE_BITGROOM_ATT_NAME,
H5P_DEFAULT, H5P_DEFAULT) : 0;

if (attid > 0)
{
var->quantize_mode = NC_QUANTIZE_BITGROOM;
}
else
{
attid = H5Aopen_by_name(datasetid, ".", NC_QUANTIZE_GRANULARBR_ATT_NAME,
H5P_DEFAULT, H5P_DEFAULT);
attr_exists = H5Aexists(datasetid, NC_QUANTIZE_GRANULARBR_ATT_NAME);
attid = attr_exists ? H5Aopen_by_name(datasetid, ".", NC_QUANTIZE_GRANULARBR_ATT_NAME,
H5P_DEFAULT, H5P_DEFAULT) : 0;
if (attid > 0)
{
var->quantize_mode = NC_QUANTIZE_GRANULARBR;
}
else
{
attid = H5Aopen_by_name(datasetid, ".", NC_QUANTIZE_BITROUND_ATT_NAME,
H5P_DEFAULT, H5P_DEFAULT);
attr_exists = H5Aexists(datasetid, NC_QUANTIZE_BITROUND_ATT_NAME);
attid = attr_exists ? H5Aopen_by_name(datasetid, ".", NC_QUANTIZE_BITROUND_ATT_NAME,
H5P_DEFAULT, H5P_DEFAULT) : 0;
if (attid > 0)
var->quantize_mode = NC_QUANTIZE_BITROUND;
}
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