def test_grib_keys_iterator_skip():
gid = eccodes.codes_grib_new_from_samples("reduced_gg_pl_1280_grib1")
iterid = eccodes.codes_keys_iterator_new(gid, "ls")
count = 0
eccodes.codes_skip_computed(iterid)
# codes_skip_coded(iterid)
eccodes.codes_skip_edition_specific(iterid)
eccodes.codes_skip_duplicates(iterid)
eccodes.codes_skip_read_only(iterid)
eccodes.codes_skip_function(iterid)
while eccodes.codes_keys_iterator_next(iterid):
keyname = eccodes.codes_keys_iterator_get_name(iterid)
keyval = eccodes.codes_get_string(gid, keyname)
assert len(keyval) > 0
count += 1
# centre, level and dataType
assert count == 3
eccodes.codes_keys_iterator_delete(iterid)
iterid = eccodes.codes_keys_iterator_new(gid)
count = 0
eccodes.codes_skip_coded(iterid)
while eccodes.codes_keys_iterator_next(iterid):
count += 1
assert count == 141
eccodes.codes_keys_iterator_delete(iterid)
eccodes.codes_release(gid)
def message_grib_keys(self, namespace=None):
# type: (str) -> T.Generator[str, None, None]
iterator = eccodes.codes_keys_iterator_new(self.codes_id,
namespace=namespace)
while eccodes.codes_keys_iterator_next(iterator):
yield eccodes.codes_keys_iterator_get_name(iterator)
eccodes.codes_keys_iterator_delete(iterator)
def message_grib_keys(self,
namespace: T.Optional[str] = None
) -> T.Iterator[str]:
iterator = eccodes.codes_keys_iterator_new(self.codes_id,
namespace=namespace)
while eccodes.codes_keys_iterator_next(iterator):
yield eccodes.codes_keys_iterator_get_name(iterator)
eccodes.codes_keys_iterator_delete(iterator)
def keys(self, namespace=None):
"""Get available keys in message."""
iterator = eccodes.codes_keys_iterator_new(self.codes_id,
namespace=namespace)
keys = []
while eccodes.codes_keys_iterator_next(iterator):
key = eccodes.codes_keys_iterator_get_name(iterator)
keys.append(key)
eccodes.codes_keys_iterator_delete(iterator)
return keys
def message_iterkeys(self, namespace=None):
# type: (str) -> T.Generator[str, None, None]
if namespace is not None:
bnamespace = namespace # type: T.Optional[str]
else:
bnamespace = None
iterator = eccodes.codes_keys_iterator_new(self.codes_id,
namespace=bnamespace)
while eccodes.codes_keys_iterator_next(iterator):
yield eccodes.codes_keys_iterator_get_name(iterator)
eccodes.codes_keys_iterator_delete(iterator)
def get_ecc_msg_keys(gid, namespace=None, skipkeys=None):
"""Retrieve keys from one particular ecc message
Parameters
----------
gid : ecc message id
namespace : string
namespace to be retrieved, defaults to None (means all)
'ls', 'parameter', 'time', 'geography', 'vertical', 'statistics', 'mars'
skipkeys : list of strings
keys to be skipped, defaults to None
possible keys: 'computed', 'coded', 'edition', 'duplicates', 'read_only', 'function'
Returns
-------
data : list of ecc message keys
"""
# get key iterator
iterid = ecc.codes_keys_iterator_new(gid, namespace)
# Different types of keys can be skipped
if skipkeys:
if 'computed' in skipkeys:
ecc.codes_skip_computed(iterid)
if 'coded' in skipkeys:
ecc.codes_skip_coded(iterid)
if 'edition' in skipkeys:
ecc.codes_skip_edition_specific(iterid)
if 'duplicates' in skipkeys:
ecc.codes_skip_duplicates(iterid)
if 'read_only' in skipkeys:
ecc.codes_skip_read_only(iterid)
if 'function' in skipkeys:
ecc.codes_skip_function(iterid)
data = []
# iterate over message keys
while ecc.codes_keys_iterator_next(iterid):
keyname = ecc.codes_keys_iterator_get_name(iterid)
# add keyname-keyvalue-pair to output dictionary
data.append(keyname)
# release iterator
ecc.codes_keys_iterator_delete(iterid)
return data
def _index_grib_file(path, path_name=None):
import eccodes
with open(path, "rb") as f:
h = eccodes.codes_grib_new_from_file(f)
while h:
try:
field = dict()
if isinstance(path_name, str):
field["_path"] = path_name
elif path_name is False:
pass
elif path_name is None:
field["_path"] = path
else:
raise ValueError(
f"Value of path_name cannot be '{path_name}.'")
i = eccodes.codes_keys_iterator_new(h, "mars")
try:
while eccodes.codes_keys_iterator_next(i):
name = eccodes.codes_keys_iterator_get_name(i)
value = eccodes.codes_get_string(h, name)
field[name] = value
finally:
eccodes.codes_keys_iterator_delete(i)
field["_offset"] = eccodes.codes_get_long(h, "offset")
field["_length"] = eccodes.codes_get_long(h, "totalLength")
field["_param_id"] = eccodes.codes_get_string(h, "paramId")
field["param"] = eccodes.codes_get_string(h, "shortName")
yield field
finally:
eccodes.codes_release(h)
h = eccodes.codes_grib_new_from_file(f)
def get_ecc_msg(gid, namespace=None, skipkeys=None):
"""Read data from one particular ecc message
Parameters
----------
gid : ecc message id
namespace : string
namespace to be retrieved, defaults to None (means all)
'ls', 'parameter', 'time', 'geography', 'vertical', 'statistics', 'mars'
skipkeys : list of strings
keys to be skipped, defaults to None
possible keys: 'computed', 'coded', 'edition', 'duplicates', 'read_only', 'function'
Returns
-------
data : dictionary of ecc message contents
"""
# get key iterator
iterid = ecc.codes_keys_iterator_new(gid, namespace)
# Different types of keys can be skipped
if skipkeys:
if 'computed' in skipkeys:
ecc.codes_skip_computed(iterid)
if 'coded' in skipkeys:
ecc.codes_skip_coded(iterid)
if 'edition' in skipkeys:
ecc.codes_skip_edition_specific(iterid)
if 'duplicates' in skipkeys:
ecc.codes_skip_duplicates(iterid)
if 'read_only' in skipkeys:
ecc.codes_skip_read_only(iterid)
if 'function' in skipkeys:
ecc.codes_skip_function(iterid)
data = OrderedDict()
# iterate over message keys
while ecc.codes_keys_iterator_next(iterid):
keyname = ecc.codes_keys_iterator_get_name(iterid)
#print(keyname)
#print("Size:", ecc.codes_get_size(gid, keyname))
#print("Values:", ecc.codes_get_values(gid, keyname))
#print("Array:", ecc.codes_get_values(gid, keyname))
# try to get key values,
# use get_array for sizes > 1 and get for sizes == 1
if ecc.codes_get_size(gid,keyname) > 1:
#print("has array", type is str)
#print(type is not <type 'str'>)
if ecc.codes_get_native_type(iterid, keyname) is not str:
keyval = ecc.codes_get_array(gid, keyname, None)
else:
keyval = ecc.codes_get(gid, keyname, None)
#print("Arr:", keyval)
else:
# Todo: fix reading mybits
if keyname not in ['mybits']:
keyval = ecc.codes_get(gid, keyname, None)
#print("Val:", keyval)
else:
keyval = 'err'
# add keyname-keyvalue-pair to output dictionary
data[keyname] = keyval
#print('Message processed')
# release iterator
ecc.codes_keys_iterator_delete(iterid)
return data