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# Copyright (C) 2017 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.
""" Wrapper to invoke compiled build tools from the build system.
This is just a workaround for GN assuming that all external scripts are
python sources. It is used to invoke tools like the protoc compiler.
"""
from __future__ import print_function
import argparse
import os
import subprocess
import sys
def main():
parser = argparse.ArgumentParser()
parser.add_argument('--chdir', default=None)
parser.add_argument('--stamp', default=None)
parser.add_argument('--path', default=None)
parser.add_argument('--noop', default=False, action='store_true')
parser.add_argument('--suppress_stdout', default=False, action='store_true')
parser.add_argument('--suppress_stderr', default=False, action='store_true')
parser.add_argument('cmd', nargs=argparse.REMAINDER)
args = parser.parse_args()
if args.noop:
return 0
if args.chdir and not os.path.exists(args.chdir):
print(
'Cannot chdir to %s from %s' % (workdir, os.getcwd()), file=sys.stderr)
return 1
exe = os.path.abspath(args.cmd[0]) if os.sep in args.cmd[0] else args.cmd[0]
env = os.environ.copy()
if args.path:
env['PATH'] = os.path.abspath(args.path) + os.pathsep + env['PATH']
devnull = open(os.devnull, 'wb')
stdout = devnull if args.suppress_stdout else None
stderr = devnull if args.suppress_stderr else None
try:
proc = subprocess.Popen(
[exe] + args.cmd[1:],
cwd=args.chdir,
env=env,
stderr=stderr,
stdout=stdout)
ret = proc.wait()
if ret == 0 and args.stamp:
with open(args.stamp, 'w'):
os.utime(args.stamp, None)
return ret
except OSError as e:
print('Error running: "%s" (%s)' % (args.cmd[0], e.strerror))
print('PATH=%s' % env.get('PATH'))
return 127
if __name__ == '__main__':
sys.exit(main())
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