"""
Copyright 2020 Odd Gunnar Aspaas

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.
"""

import glob


def get_files(extension=None, folder=None):
    pattern = "**" # all
    if not extension:
        extension = "py"
    if folder:
        pattern = folder + "/" + pattern
    file_paths = glob.glob(pattern, recursive=True)   
    for path in file_paths[:]:
        if not path.endswith(extension):
            file_paths.remove(path)
    return file_paths



