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# Copyright 2013-2016 The Meson development team
# 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.
import os
import sys
import argparse
import pickle
import subprocess
import typing as T
import locale
from .. import mesonlib
from ..backend.backends import ExecutableSerialisation
options = None
def buildparser() -> argparse.ArgumentParser:
parser = argparse.ArgumentParser(description='Custom executable wrapper for Meson. Do not run on your own, mmm\'kay?')
parser.add_argument('--unpickle')
parser.add_argument('--capture')
parser.add_argument('--feed')
return parser
def run_exe(exe: ExecutableSerialisation, extra_env: T.Optional[dict] = None) -> int:
if exe.exe_runner:
if not exe.exe_runner.found():
raise AssertionError('BUG: Can\'t run cross-compiled exe {!r} with not-found '
'wrapper {!r}'.format(exe.cmd_args[0], exe.exe_runner.get_path()))
cmd_args = exe.exe_runner.get_command() + exe.cmd_args
else:
cmd_args = exe.cmd_args
child_env = os.environ.copy()
if extra_env:
child_env.update(extra_env)
if exe.env:
child_env = exe.env.get_env(child_env)
if exe.extra_paths:
child_env['PATH'] = (os.pathsep.join(exe.extra_paths + ['']) +
child_env['PATH'])
if exe.exe_runner and mesonlib.substring_is_in_list('wine', exe.exe_runner.get_command()):
child_env['WINEPATH'] = mesonlib.get_wine_shortpath(
exe.exe_runner.get_command(),
['Z:' + p for p in exe.extra_paths] + child_env.get('WINEPATH', '').split(';')
)
stdin = None
if exe.feed:
stdin = open(exe.feed, 'rb')
pipe = subprocess.PIPE
if exe.verbose:
assert not exe.capture, 'Cannot capture and print to console at the same time'
pipe = None
p = subprocess.Popen(cmd_args, env=child_env, cwd=exe.workdir,
close_fds=False, stdin=stdin, stdout=pipe, stderr=pipe)
stdout, stderr = p.communicate()
if stdin is not None:
stdin.close()
if p.returncode == 0xc0000135:
# STATUS_DLL_NOT_FOUND on Windows indicating a common problem that is otherwise hard to diagnose
raise FileNotFoundError('due to missing DLLs')
if p.returncode != 0:
if exe.pickled:
print(f'while executing {cmd_args!r}')
if exe.verbose:
return p.returncode
encoding = locale.getpreferredencoding()
if not exe.capture:
print('--- stdout ---')
print(stdout.decode(encoding=encoding, errors='replace'))
print('--- stderr ---')
print(stderr.decode(encoding=encoding, errors='replace'))
return p.returncode
if exe.capture:
skip_write = False
try:
with open(exe.capture, 'rb') as cur:
skip_write = cur.read() == stdout
except OSError:
pass
if not skip_write:
with open(exe.capture, 'wb') as output:
output.write(stdout)
return 0
def run(args: T.List[str]) -> int:
global options
parser = buildparser()
options, cmd_args = parser.parse_known_args(args)
# argparse supports double dash to separate options and positional arguments,
# but the user has to remove it manually.
if cmd_args and cmd_args[0] == '--':
cmd_args = cmd_args[1:]
if not options.unpickle and not cmd_args:
parser.error('either --unpickle or executable and arguments are required')
if options.unpickle:
if cmd_args or options.capture or options.feed:
parser.error('no other arguments can be used with --unpickle')
with open(options.unpickle, 'rb') as f:
exe = pickle.load(f)
exe.pickled = True
else:
exe = ExecutableSerialisation(cmd_args, capture=options.capture, feed=options.feed)
return run_exe(exe)
if __name__ == '__main__':
sys.exit(run(sys.argv[1:]))
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