blob: e3210ed86b27fbb7e51f129ead62b5391bf52a65 [file] [log] [blame]
# 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(mode='w+')
with open(input_file, 'r') as in_file:
tmp_output.writelines(line for line in in_file.readlines()
if line not in patterns)
# Append empty line because a completely empty file
# will trip up secilc later on:
tmp_output.write("\n")
tmp_output.flush()
# Replaces the input_file.
shutil.copyfile(tmp_output.name, input_file)