blob: 94297c550b9bc3b7b6c6821097d91a98cf74bd1e [file] [log] [blame] [edit]
#!/usr/bin/env python3
# Copyright 2021 The Chromium Authors
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
"""Creates a dummy RTS filter file and a dummy inverse filter file if a
real ones do not exist yet. Real filter files (and their inverse) are
generated by the RTS binary for suites with any skippable tests. The
rest of the suites need to have dummy files because gn will expect the
file to be present.
Implementation uses try / except because the filter files are written
relatively close to when this code creates the dummy files.
The following type of implementation would have a race condition:
if not os.path.isfile(filter_file):
open(filter_file, 'w') as fp:
fp.write('*')
"""
import errno
import os
import sys
def main():
filter_file = sys.argv[1]
# '*' is a dummy that means run everything
write_filter_file(filter_file, '*')
inverted_filter_file = sys.argv[2]
# '-*' is a dummy that means run nothing
write_filter_file(inverted_filter_file, '-*')
def write_filter_file(filter_file, filter_string):
directory = os.path.dirname(filter_file)
try:
os.makedirs(directory)
except OSError as err:
if err.errno == errno.EEXIST:
pass
else:
raise
try:
fp = os.open(filter_file, os.O_CREAT | os.O_EXCL | os.O_WRONLY)
except OSError as err:
if err.errno == errno.EEXIST:
pass
else:
raise
else:
with os.fdopen(fp, 'w') as file_obj:
file_obj.write(filter_string)
if __name__ == '__main__':
sys.exit(main())