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# Copyright 2021 The Pigweed Authors
#
# 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
#
# https://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.
"""Prints an error message and exits unsuccessfully."""
import argparse
import logging
import os
from pathlib import Path
import subprocess
import sys
try:
from pw_cli.log import install as setup_logging
except ImportError:
from logging import basicConfig as setup_logging # type: ignore
_LOG = logging.getLogger(__name__)
def _parse_args() -> argparse.Namespace:
parser = argparse.ArgumentParser(description=__doc__)
parser.add_argument('--message',
required=True,
help='Error message to print')
parser.add_argument('--target',
required=True,
help='GN target in which the error occurred')
parser.add_argument('--root', required=True, type=Path, help='GN root')
parser.add_argument('--out', required=True, type=Path, help='GN out dir')
return parser.parse_args()
def main(message: str, target: str, root: Path, out: Path) -> int:
"""Logs the error message and returns 1."""
_LOG.error('')
_LOG.error('Build error for %s:', target)
_LOG.error('')
for line in message.split('\\n'):
_LOG.error(' %s', line)
_LOG.error('')
gn_cmd = subprocess.run(
['gn', 'path', f'--root={root}', out, '//:default', target],
capture_output=True)
path_info = gn_cmd.stdout.decode(errors='replace').rstrip()
relative_out = os.path.relpath(out, root)
if gn_cmd.returncode == 0 and 'No non-data paths found' not in path_info:
_LOG.error('Dependency path to this target:')
_LOG.error('')
_LOG.error(' gn path %s //:default "%s"\n%s', relative_out, target,
path_info)
_LOG.error('')
else:
_LOG.error(
'Run this command to see the build dependency path to this target:'
)
_LOG.error('')
_LOG.error(' gn path %s <target> "%s"', relative_out, target)
_LOG.error('')
_LOG.error('where <target> is the GN target you are building.')
_LOG.error('')
return 1
if __name__ == '__main__':
setup_logging()
sys.exit(main(**vars(_parse_args())))
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