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directory.py
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directory.py
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# (C) Copyright 2020 ECMWF.
#
# This software is licensed under the terms of the Apache Licence Version 2.0
# which can be obtained at http://www.apache.org/licenses/LICENSE-2.0.
# In applying this licence, ECMWF does not waive the privileges and immunities
# granted to it by virtue of its status as an intergovernmental organisation
# nor does it submit to any jurisdiction.
#
import os
from . import Reader, reader
class DirectoryReader(Reader):
def __init__(self, source, path):
super().__init__(source, path)
self._content = []
for root, _, files in os.walk(path):
for file in files:
self._content.append(os.path.join(root, file))
def mutate(self):
# If there is only one file, let's mutate to the proper reader
if len(self._content) == 1:
return reader(self.source, self._content[0])
return self
def to_xarray(self):
import xarray as xr
return xr.open_mfdataset(self._content, combine="by_coords")