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- # Copyright 2018 - The Android Open Source Project
- #
- # 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.
- """File-related utilities."""
- import os
- import shutil
- import tempfile
- def make_parent_dirs(file_path):
- """Creates parent directories for the file_path."""
- if os.path.exists(file_path):
- return
- parent_dir = os.path.dirname(file_path)
- if parent_dir and not os.path.exists(parent_dir):
- os.makedirs(parent_dir)
- def filter_out(pattern_files, input_file):
- """"Removes lines in input_file that match any line in pattern_files."""
- # Prepares patterns.
- patterns = []
- for f in pattern_files:
- patterns.extend(open(f).readlines())
- # Copy lines that are not in the pattern.
- tmp_output = tempfile.NamedTemporaryFile()
- with open(input_file, 'r') as in_file:
- tmp_output.writelines(line for line in in_file.readlines()
- if line not in patterns)
- tmp_output.flush()
- # Replaces the input_file.
- shutil.copyfile(tmp_output.name, input_file)
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