tiramisu-cmdline-parser/tiramisu_cmdline_parser.py

166 lines
7.1 KiB
Python
Raw Normal View History

2018-11-29 22:52:20 +01:00
# Copyright (C) 2018 Team tiramisu (see AUTHORS for all contributors)
#
# This program is free software: you can redistribute it and/or modify it
# under the terms of the GNU Lesser General Public License as published by the
# Free Software Foundation, either version 3 of the License, or (at your
# option) any later version.
#
# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
# details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
2018-11-29 22:10:08 +01:00
from typing import Union, List
from argparse import ArgumentParser, Namespace, SUPPRESS
from tiramisu import Option, OptionDescription, Config, BoolOption, StrOption, IntOption, \
ChoiceOption, SymLinkOption
from tiramisu.error import PropertiesOptionError
class TiramisuNamespace(Namespace):
def _populate(self):
for tiramisu_key, tiramisu_value in self._config.value.dict().items():
option = self._config.option(tiramisu_key)
if not isinstance(option.option.get(), SymLinkOption):
if tiramisu_value == [] and option.option.ismulti() and option.owner.isdefault():
tiramisu_value = None
super().__setattr__(tiramisu_key, tiramisu_value)
def __init__(self, config):
self._config = config
super().__init__()
def __setattr__(self, key, value):
if key == '_config':
super().__setattr__(key, value)
return
self._config.property.read_write()
option = self._config.option(key)
if option.option.ismulti() and value is not None and not isinstance(value, list):
value = [value]
option.value.set(value)
def __getattribute__(self, key):
if key == '__dict__' and hasattr(self, '_config'):
self._config.property.read_only()
self._populate()
self._config.property.read_write()
return super().__getattribute__(key)
class TiramisuCmdlineParser(ArgumentParser):
2018-11-29 22:10:08 +01:00
def __init__(self, *args, **kwargs):
self.config = None
super().__init__(*args, **kwargs)
def _match_arguments_partial(self, actions, arg_string_pattern):
# used only when check first proposal for first value
# we have to remove all actions with propertieserror
# so only first settable option will be returned
actions_pop = []
for idx, action in enumerate(actions):
if self.config.unrestraint.option(action.dest).property.get(only_raises=True):
actions_pop.append(idx)
else:
break
for idx in actions_pop:
actions.pop(0)
return super()._match_arguments_partial(actions, arg_string_pattern)
def add_argument(self, *args, **kwargs):
if args == ('-h', '--help'):
super().add_argument(*args, **kwargs)
else:
raise NotImplementedError('do not use add_argument')
def add_arguments(self, tiramisu: Union[Config, Option, List[Option], OptionDescription]) -> None:
if not isinstance(tiramisu, Config):
if not isinstance(tiramisu, OptionDescription):
if isinstance(tiramisu, Option):
tiramisu = [tiramisu]
tiramisu = OptionDescription('root', 'root', tiramisu)
tiramisu = Config(tiramisu)
self.config = tiramisu
actions = {}
for obj in tiramisu.unrestraint.option.list():
if obj.option.properties(only_raises=True) or 'frozen' in obj.option.properties():
continue
option = obj.option
tiramisu_option = option.get()
name = option.name()
if name.startswith(self.prefix_chars):
raise ValueError('name cannot startswith "{}"'.format(self.prefix_chars))
properties = obj.property.get()
kwargs = {'help': option.doc(),
'default': SUPPRESS}
if 'positional' in properties:
#if not 'mandatory' in properties:
# raise ValueError('"positional" argument must be "mandatory" too')
args = [name]
if option.requires():
kwargs['nargs'] = '?'
else:
if len(name) == 1 and 'longargument' not in properties:
args = [self.prefix_chars + name]
else:
args = [self.prefix_chars * 2 + name]
if 'mandatory' in properties:
kwargs['required'] = True
if isinstance(tiramisu_option, BoolOption):
if 'mandatory' in properties:
raise ValueError('"mandatory" property is not allowed for BoolOption')
#if not isinstance(option.default(), bool):
# raise ValueError('default value is mandatory for BoolOption')
if option.default() is False:
action = 'store_true'
else:
action = 'store_false'
kwargs['action'] = action
else:
if option.default() not in [None, []]:
#kwargs['default'] = kwargs['const'] = option.default()
#kwargs['action'] = 'store_const'
kwargs['nargs'] = '?'
if option.ismulti():
if 'mandatory' in properties:
kwargs['nargs'] = '+'
else:
kwargs['nargs'] = '*'
if isinstance(tiramisu_option, StrOption):
pass
elif isinstance(tiramisu_option, IntOption):
kwargs['type'] = int
elif isinstance(tiramisu_option, SymLinkOption):
tiramisu_option = tiramisu_option.impl_getopt()
actions[tiramisu_option.impl_getname()][0].insert(0, args[0])
continue
elif isinstance(tiramisu_option, ChoiceOption):
kwargs['choices'] = obj.value.list()
else:
pass
#raise NotImplementedError('not supported yet')
actions[option.name()] = (args, kwargs)
for args, kwargs in actions.values():
super().add_argument(*args, **kwargs)
def parse_args(self, *args, **kwargs):
kwargs['namespace'] = TiramisuNamespace(self.config)
try:
namespaces = super().parse_args(*args, **kwargs)
except PropertiesOptionError as err:
# import traceback
# traceback.print_exc()
if err.proptype == ('mandatory',):
self.error('the following arguments are required: {}'.format(err._option_bag.option.impl_getname()))
else:
self.error('unexpected error: {}'.format(err))
del namespaces.__dict__['_config']
return namespaces
def get_config(self):
return self.config