Removing support for cdf_uint8 (which never actually existed) (#285)

Author: bryan-harter

cdflib/cdfwrite.py

@@ -1417,14 +1417,14 @@ def _datatype_define(self, value: Union[str, int, float, complex, np.ndarray]) -
                     return numElems, self.CDF_INT8
                 elif value.dtype.type == np.complex128:
                     return numElems, self.CDF_EPOCH16
-                elif value.dtype.type in (np.uint8, np.uint16, np.uint32, np.uint64):
+                elif value.dtype.type in (np.uint8, np.uint16, np.uint32):
                     return numElems, self.CDF_UINT4
                 elif value.dtype.type in (np.float16, np.float32, np.float64):
                     return numElems, self.CDF_DOUBLE
                 elif value.dtype.type == np.str_:
                     return numElems, self.CDF_CHAR
                 else:
-                    logger.warning("Invalid data type for data.... Skip")
+                    logger.warning(f"Invalid data type for data {value.dtype.type}.... Skip")
                     return None, None
             else:
                 logger.warning("Invalid data type for data.... Skip")

cdflib/xarray/xarray_to_cdf.py

@@ -166,7 +166,11 @@ def _dtype_to_cdf_type(var: xr.DataArray, terminate_on_warning: bool = False) ->
     elif numpy_data_type == np.uint32:
         cdf_data_type = "CDF_UINT4"
     elif numpy_data_type == np.uint64:
-        cdf_data_type = "CDF_UINT8"
+        _warn_or_except(
+            f"CONVERSION ERROR: Data in variable {var.name} is a 64bit unsigned integer. CDF does not currently support this data type. See documentation for supported xarray/numpy data types.",
+            terminate_on_warning,
+        )
+        cdf_data_type = "CDF_UINT4"
     elif numpy_data_type == np.complex128:
         cdf_data_type = "CDF_EPOCH16"
     elif numpy_data_type.type in (np.str_, np.bytes_):
@@ -1020,7 +1024,6 @@ def xarray_to_cdf(
         np.uint8       CDF_UINT1
         np.uint16      CDF_UINT2
         np.uint32      CDF_UINT4
-        np.uint64      CDF_UINT8
         np.complex_    CDF_EPOCH16
         np.str_        CDF_CHAR
         np.bytes_      CDF_CHAR