utils.py

# Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
  
# 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 os

def find_files_by_extensions(root, exts=[]):
    def _has_ext(name):
        if not exts:
            return True
        name = name.lower()
        for ext in exts:
            if name.endswith(ext):
                return True
        return False

    for path, _, files in os.walk(root):
        for name in files:
            if _has_ext(name):
                yield os.path.join(path, name)