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# Copyright (c) 2007 - 2021, Pascal Volk
# See COPYING for distribution information.
"""
VirtualMailManager.cli.main
~~~~~~~~~~~~~~~~~~~~~~~~~~~
VirtualMailManager's command line interface.
"""
from configparser import NoOptionError, NoSectionError
from VirtualMailManager import ENCODING, errors
from VirtualMailManager.config import BadOptionError, ConfigValueError
from VirtualMailManager.cli import w_err
from VirtualMailManager.cli.handler import CliHandler
from VirtualMailManager.constants import EX_MISSING_ARGS, EX_SUCCESS, \
EX_USER_INTERRUPT, INVALID_ARGUMENT
from VirtualMailManager.cli.subcommands import RunContext, setup_parser
_ = lambda msg: msg
def _get_handler():
"""Try to get a CliHandler. Exit the program when an error occurs."""
try:
handler = CliHandler()
except (errors.NotRootError, errors.PermissionError, errors.VMMError,
errors.ConfigError) as err:
w_err(err.code, _('Error: %s') % err.msg)
else:
handler.cfg_install()
return handler
def run(argv):
parser = setup_parser()
if len(argv) < 2:
parser.print_usage()
parser.exit(status=EX_MISSING_ARGS,
message=_('You must specify a subcommand at least.') + '\n')
args = parser.parse_args()
handler = _get_handler()
run_ctx = RunContext(args, handler)
try:
args.func(run_ctx)
except (EOFError, KeyboardInterrupt):
# TP: We have to cry, because root has killed/interrupted vmm
# with Ctrl+C or Ctrl+D.
w_err(EX_USER_INTERRUPT, '', _('Ouch!'), '')
except errors.VMMError as err:
if handler.has_warnings():
w_err(0, _('Warnings:'), *handler.get_warnings())
w_err(err.code, _('Error: %s') % err.msg)
except (BadOptionError, ConfigValueError) as err:
w_err(INVALID_ARGUMENT, _('Error: %s') % err)
except NoSectionError as err:
w_err(INVALID_ARGUMENT,
_("Error: Unknown section: '%s'") % err.section)
except NoOptionError as err:
w_err(INVALID_ARGUMENT,
_("Error: No option '%(option)s' in section: '%(section)s'") %
{'option': err.option, 'section': err.section})
if handler.has_warnings():
w_err(0, _('Warnings:'), *handler.get_warnings())
return EX_SUCCESS
del _
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