#	Copyright 2020 Division of Medical Image Computing, German Cancer Research Center (DKFZ), Heidelberg, Germany
#
#	Licensed under the Apache License, Version 2.0 (the "License");
#	you may not use this file except in compliance with the License.
#	You may obtain a copy of the License at
#
#		http://www.apache.org/licenses/LICENSE-2.0
#
#	Unless required by applicable law or agreed to in writing, software
#	distributed under the License is distributed on an "AS IS" BASIS,
#	WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
#	See the License for the specific language governing permissions and
#	limitations under the License.


from batchgenerators.utilities.file_and_folder_operations import *


def remove_trailing_slash(filename: str):
	while filename.endswith('/'):
		filename = filename[:-1]
	return filename


def maybe_add_0000_to_all_niigz(folder):
	nii_gz = subfiles(folder, suffix='.nii.gz')
	for n in nii_gz:
		n = remove_trailing_slash(n)
		if not n.endswith('_0000.nii.gz'):
			os.rename(n, n[:-7] + '_0000.nii.gz')
