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import subprocess
import shlex
def run_command(command, stdin=None, encoding='utf-8', return_codes=None,
**kwargs):
if not isinstance(command, list):
command = shlex.split(command)
try:
pipe = subprocess.Popen(command, shell=False,
stdin=subprocess.PIPE,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
**kwargs)
except OSError:
return (None, None, -1)
kwargs = {}
if stdin:
kwargs['input'] = stdin.read()
(output, stderr) = (x.decode(encoding) for x in pipe.communicate(**kwargs))
if return_codes is not None:
if not isinstance(return_codes, tuple):
return_codes = (return_codes, )
if pipe.returncode not in return_codes:
raise SchrootCommandError("Bad return code %d" % pipe.returncode)
return (output, stderr, pipe.returncode)
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