tiramisu-cmdline-parser/tiramisu_cmdline_parser/api.py

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# Copyright (C) 2018-2019 Team tiramisu (see AUTHORS for all contributors)
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#
# 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/>.
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from typing import Union, List, Dict, Tuple, Optional, Any
from argparse import ArgumentParser, Namespace, SUPPRESS, _HelpAction, HelpFormatter
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from copy import copy
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from gettext import gettext as _
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try:
from tiramisu import Config
from tiramisu.error import PropertiesOptionError, RequirementError, LeadershipError
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except ImportError:
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Config = None
from tiramisu_api.error import PropertiesOptionError
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RequirementError = PropertiesOptionError
LeadershipError = ValueError
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try:
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from tiramisu_api import Config as ConfigJson
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if Config is None:
Config = ConfigJson
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except ImportError:
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ConfigJson = Config
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def get_choice_list(obj, properties, display):
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def convert(choice):
if isinstance(choice, int):
return str(choice)
return choice
choices = [convert(choice) for choice in obj.value.list()]
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if choices and choices[0] == '':
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del choices[0]
if display:
choices = '{{{}}}'.format(','.join(choices))
if 'mandatory' not in properties:
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choices = '[{}]'.format(choices)
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return choices
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class TiramisuNamespace(Namespace):
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def __init__(self,
config: Config,
root: Optional[str]) -> None:
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super().__setattr__('_config', config)
super().__setattr__('_root', root)
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super().__setattr__('list_force_no', {})
super().__setattr__('list_force_del', {})
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super().__setattr__('arguments', {})
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self._populate()
super().__init__()
def _populate(self) -> None:
if self._root is None:
config = self._config
else:
config = self._config.option(self._root)
for tiramisu_key, tiramisu_value in config.value.dict(fullpath=True).items():
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option = self._config.option(tiramisu_key)
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if not option.option.issymlinkoption():
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if tiramisu_value == [] and \
option.option.ismulti(): # and \
# option.owner.isdefault():
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tiramisu_value = None
super().__setattr__(tiramisu_key, tiramisu_value)
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def __setattr__(self,
key: str,
value: Any) -> None:
if key in self.list_force_no:
true_key = self.list_force_no[key]
elif key in self.list_force_del:
true_key = self.list_force_del[key]
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else:
true_key = key
option = self._config.option(true_key)
if option.option.isfollower():
_setattr = self._setattr_follower
true_value = ','.join(value[1:])
else:
_setattr = self._setattr
true_value = value
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if option.option.type() == 'choice':
# HACK if integer in choice
values = option.value.list()
if isinstance(value, list):
int_value = []
for val in value:
if isinstance(val, str) and val.isdigit():
int_val = int(val)
if int_val in values:
val = int_val
int_value.append(val)
value = int_value
elif value not in values and isinstance(value, str) and value.isdigit():
int_value = int(value)
if int_value in values:
value = int_value
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try:
if key in self.list_force_del:
option.value.pop(value)
else:
_setattr(option, true_key, key, value)
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except ValueError as err:
if option.option.type() == 'choice':
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values = option.value.list()
if isinstance(true_value, list):
for val in value:
if val not in values:
display_value = val
break
else:
display_value = true_value
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choices = get_choice_list(option, option.property.get(), False)
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raise ValueError("argument {}: invalid choice: '{}' (choose from {})".format(self.arguments[key], display_value, ', '.join([f"'{val}'" for val in choices])))
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else:
raise err
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def _setattr(self,
option: 'Option',
true_key: str,
key: str,
value: Any) -> None:
if option.option.ismulti() and \
value is not None and \
not isinstance(value, list):
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value = [value]
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try:
option.value.set(value)
except PropertiesOptionError:
raise AttributeError('unrecognized arguments: {}'.format(self.arguments[key]))
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def _setattr_follower(self,
option: 'Option',
true_key: str,
key: str,
value: Any) -> None:
if not value[0].isdecimal():
raise ValueError('index must be a number, not {}'.format(value[0]))
index = int(value[0])
if option.option.type() == 'boolean':
value = key not in self.list_force_no
elif option.option.issubmulti():
value = value[1:]
else:
value = value[1]
self._config.option(true_key, index).value.set(value)
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class TiramisuHelpFormatter:
def _get_default_metavar_for_optional(self,
action):
ret = super()._get_default_metavar_for_optional(action)
if '.' in ret:
ret = ret.rsplit('.', 1)[1]
return ret
class _Section(HelpFormatter._Section):
def format_help(self):
# Remove empty OD
if self.formatter.remove_empty_od and \
len(self.items) == 1 and \
self.items[0][0].__name__ == '_format_text':
return ''
return super().format_help()
class _TiramisuHelpAction(_HelpAction):
needs = False
def __call__(self, *args, **kwargs):
_TiramisuHelpAction.needs = True
def display(self, parser):
_HelpAction.__call__(self, parser, None, None)
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class _BuildKwargs:
def __init__(self,
name: str,
option: 'Option',
cmdlineparser: 'TiramisuCmdlineParser',
properties: List[str],
force_no: bool,
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force_del: bool,
display_modified_value: bool,
not_display: bool) -> None:
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self.kwargs = {}
self.cmdlineparser = cmdlineparser
self.properties = properties
self.force_no = force_no
self.force_del = force_del
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if (not self.force_no or (not_display and not display_modified_value)) and not self.force_del:
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description = option.doc()
if not description:
description = description.replace('%', '%%')
self.kwargs['help'] = description
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if 'positional' not in self.properties:
is_short_name = self.cmdlineparser._is_short_name(name, 'longargument' in self.properties)
if self.force_no:
ga_name = self.gen_argument_name(name, is_short_name)
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ga_path = self.gen_argument_name(option.path(), is_short_name)
self.cmdlineparser.namespace.list_force_no[ga_path] = option.path()
elif self.force_del:
ga_name = self.gen_argument_name(name, is_short_name)
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ga_path = self.gen_argument_name(option.path(), is_short_name)
self.cmdlineparser.namespace.list_force_del[ga_path] = option.path()
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else:
ga_name = name
self.kwargs['dest'] = self.gen_argument_name(option.path(), False)
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argument = self.cmdlineparser._gen_argument(ga_name, is_short_name)
self.cmdlineparser.namespace.arguments[option.path()] = argument
self.args = [argument]
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else:
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self.cmdlineparser.namespace.arguments[option.path()] = option.path()
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self.args = [option.path()]
def __setitem__(self,
key: str,
value: Any) -> None:
self.kwargs[key] = value
def add_argument(self,
option: 'Option'):
is_short_name = self.cmdlineparser._is_short_name(option.name(), 'longargument' in self.properties)
if self.force_no:
name = self.gen_argument_name(option.name(), is_short_name)
elif self.force_del:
name = self.gen_argument_name(option.name(), is_short_name)
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else:
name = option.name()
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argument = self.cmdlineparser._gen_argument(name, is_short_name)
self.cmdlineparser.namespace.arguments[option.path()] = argument
self.args.insert(0, argument)
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def gen_argument_name(self, name, is_short_name):
if self.force_no:
if is_short_name:
prefix = 'n'
else:
prefix = 'no-'
if '.' in name:
sname = name.rsplit('.', 1)
name = sname[0] + '.' + prefix + sname[1]
else:
name = prefix + name
if self.force_del:
if is_short_name:
prefix = 'p'
else:
prefix = 'pop-'
if '.' in name:
sname = name.rsplit('.', 1)
name = sname[0] + '.' + prefix + sname[1]
else:
name = prefix + name
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return name
def get(self) -> Tuple[Dict]:
return self.args, self.kwargs
class TiramisuCmdlineParser(ArgumentParser):
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def __init__(self,
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config: Union[Config, ConfigJson],
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*args,
root: str=None,
fullpath: bool=True,
remove_empty_od: bool=False,
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display_modified_value: bool=True,
formatter_class=HelpFormatter,
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unrestraint: bool=False,
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_forhelp: bool=False,
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**kwargs):
self.fullpath = fullpath
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self.config = config
self.root = root
self.remove_empty_od = remove_empty_od
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self.unrestraint = unrestraint
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self.display_modified_value = display_modified_value
if TiramisuHelpFormatter not in formatter_class.__mro__:
formatter_class = type('TiramisuHelpFormatter', (TiramisuHelpFormatter, formatter_class), {})
formatter_class.remove_empty_od = self.remove_empty_od
kwargs['formatter_class'] = formatter_class
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if not _forhelp and self.unrestraint:
subconfig = self.config.unrestraint
else:
subconfig = self.config
if self.root is None:
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subconfig = subconfig.option
else:
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subconfig = subconfig.option(self.root)
self.namespace = TiramisuNamespace(self.config, self.root)
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super().__init__(*args, **kwargs)
self.register('action', 'help', _TiramisuHelpAction)
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self._config_to_argparser(_forhelp,
subconfig,
self.root)
def _pop_action_class(self, kwargs, default=None):
ret = super()._pop_action_class(kwargs, default)
if kwargs.get('action') != 'help' and kwargs.get('dest') != 'help':
return ret
return _TiramisuHelpAction
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def _match_arguments_partial(self,
actions,
arg_string_pattern):
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# 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):
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if self.config.option(action.dest).property.get(only_raises=True):
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actions_pop.append(idx)
else:
break
for idx in actions_pop:
actions.pop(0)
return super()._match_arguments_partial(actions, arg_string_pattern)
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def _is_short_name(self, name, longargument):
return len(name) == 1 and not longargument
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def _gen_argument(self, name, is_short_name):
if is_short_name:
return self.prefix_chars + name
return self.prefix_chars * 2 + name
def _parse_known_args(self, args=None, namespace=None):
try:
namespace_, args_ = super()._parse_known_args(args, namespace)
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except (ValueError, LeadershipError, AttributeError) as err:
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self.error(err)
if args != args_ and args_ and args_[0].startswith(self.prefix_chars):
# option that was disabled are no more disable
# so create a new parser
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new_parser = TiramisuCmdlineParser(self.config,
self.prog,
root=self.root,
remove_empty_od=self.remove_empty_od,
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display_modified_value=self.display_modified_value,
formatter_class=self.formatter_class,
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epilog=self.epilog,
description=self.description,
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unrestraint=self.unrestraint,
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fullpath=self.fullpath)
namespace_, args_ = new_parser._parse_known_args(args_, new_parser.namespace)
else:
if self._registries['action']['help'].needs:
# display help only when all variables assignemnt are done
self._registries['action']['help'].needs = False
helper = self._registries['action']['help'](None)
helper.display(self)
return namespace_, args_
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def add_argument(self, *args, **kwargs):
if args == ('-h', '--help'):
super().add_argument(*args, **kwargs)
else:
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raise NotImplementedError(_('do not use add_argument'))
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def add_arguments(self, *args, **kwargs):
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raise NotImplementedError(_('do not use add_argument'))
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def add_subparsers(self, *args, **kwargs):
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raise NotImplementedError(_('do not use add_subparsers'))
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def _option_is_not_default(self,
properties,
type,
name,
value):
if 'positional' not in properties:
is_short_name = self._is_short_name(name, 'longargument' in properties)
self.prog += ' {}'.format(self._gen_argument(name, is_short_name))
if type != 'boolean':
if isinstance(value, list):
for val in value:
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self.prog += ' "{}"'.format(val)
else:
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self.prog += ' "{}"'.format(value)
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def _config_list(self,
config: Config,
prefix: Optional[str],
_forhelp: bool,
group, level):
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for obj in config.list(type='all'):
# do not display frozen option
if 'frozen' in obj.option.properties():
continue
if obj.option.isoptiondescription():
if _forhelp:
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newgroup = self.add_argument_group(obj.option.path(), obj.option.description())
else:
newgroup = group
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if prefix:
prefix_ = prefix + '.' + obj.option.name()
else:
prefix_ = obj.option.path()
self._config_to_argparser(_forhelp, obj, prefix_, newgroup, level + 1)
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elif obj.option.type() == 'boolean' and not obj.option.issymlinkoption():
if not obj.option.isleader():
yield obj, False, None
yield obj, True, None
else:
yield obj, False, False
yield obj, False, True
yield obj, True, None
elif obj.option.isleader():
yield obj, None, False
yield obj, None, True
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else:
yield obj, None, None
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def _config_to_argparser(self,
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_forhelp: bool,
config,
prefix: Optional[str],
group=None,
level=0) -> None:
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if group is None:
group = super()
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actions = {}
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leadership_len = None
options_is_not_default = {}
for obj, force_no, force_del in self._config_list(config, prefix, _forhelp, group, level):
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option = obj.option
name = option.name()
if name.startswith(self.prefix_chars):
raise ValueError(_('name cannot startswith "{}"').format(self.prefix_chars))
if option.issymlinkoption():
symlink_name = option.name(follow_symlink=True)
if symlink_name in options_is_not_default:
options_is_not_default[symlink_name]['name'] = name
if symlink_name in actions:
for action in actions[symlink_name]:
action.add_argument(option)
continue
if force_del:
value = None
elif option.isleader():
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value = obj.value.get()
leadership_len = len(value)
elif option.isfollower():
value = []
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try:
for index in range(leadership_len):
value.append(self.config.option(obj.option.path(), index).value.get())
except:
value = None
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else:
value = obj.value.get()
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if self.fullpath and prefix:
name = prefix + '.' + name
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if option.isfollower():
properties = obj.option.properties()
else:
properties = obj.property.get()
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not_display = not option.isfollower() and not obj.owner.isdefault() and value is not None
kwargs = _BuildKwargs(name, option, self, properties, force_no, force_del, self.display_modified_value, not_display)
if _forhelp and not_display and ((value is not False and not force_no) or (value is False and force_no)):
options_is_not_default[option.name()] = {'properties': properties,
'type': option.type(),
'name': name,
'value': value}
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if not self.display_modified_value:
continue
if 'positional' in properties:
if option.type() == 'boolean':
raise ValueError(_('boolean option must not be positional'))
if not 'mandatory' in properties:
raise ValueError('"positional" argument must be "mandatory" too')
if _forhelp:
kwargs['default'] = obj.value.default()
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else:
kwargs['default'] = value
kwargs['nargs'] = '?'
else:
kwargs['default'] = SUPPRESS
if _forhelp and 'mandatory' in properties:
kwargs['required'] = True
if not force_del and option.type() == 'boolean':
if not option.isfollower():
if 'storefalse' in properties:
if force_no:
action = 'store_true'
else:
action = 'store_false'
elif force_no:
action = 'store_false'
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else:
action = 'store_true'
kwargs['action'] = action
else:
kwargs['metavar'] = 'INDEX'
if option.type() != 'boolean' or force_del:
if not force_del:
if _forhelp:
value = obj.value.default()
if value not in [None, []]:
#kwargs['default'] = kwargs['const'] = option.default()
#kwargs['action'] = 'store_const'
kwargs['nargs'] = '?'
if not option.isfollower() and option.ismulti():
if _forhelp and 'mandatory' in properties:
kwargs['nargs'] = '+'
else:
kwargs['nargs'] = '*'
if option.isfollower() and not option.type() == 'boolean':
metavar = option.name().upper()
if option.issubmulti():
kwargs['nargs'] = '+'
else:
kwargs['nargs'] = 2
if _forhelp and 'mandatory' not in properties:
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metavar = '[{}]'.format(metavar)
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if option.type() == 'choice':
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# do not manage choice with argparse there is problem with integer problem
kwargs['metavar'] = ('INDEX', get_choice_list(obj, properties, True))
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else:
kwargs['metavar'] = ('INDEX', metavar)
if force_del:
kwargs['metavar'] = 'INDEX'
kwargs['type'] = int
elif option.type() == 'string':
pass
elif option.type() == 'integer' or option.type() == 'boolean':
# when boolean we are here only if follower
kwargs['type'] = int
if _forhelp and option.type() == 'boolean':
kwargs['metavar'] = 'INDEX'
kwargs['nargs'] = 1
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elif option.type() == 'choice' and not option.isfollower():
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# do not manage choice with argparse there is problem with integer problem
kwargs['choices'] = get_choice_list(obj, properties, False)
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elif option.type() == 'float':
kwargs['type'] = float
else:
pass
actions.setdefault(option.name(), []).append(kwargs)
for option_is_not_default in options_is_not_default.values():
self._option_is_not_default(**option_is_not_default)
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for values in actions.values():
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for value in values:
args, kwargs = value.get()
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group.add_argument(*args, **kwargs)
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def _valid_mandatory(self):
pass
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def parse_args(self,
*args,
valid_mandatory=True,
**kwargs):
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kwargs['namespace'] = self.namespace
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try:
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namespaces = super().parse_args(*args, **kwargs)
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except PropertiesOptionError as err:
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name = err._option_bag.option.impl_getname()
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properties = self.config.option(name).property.get()
if self.fullpath and 'positional' not in properties:
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if len(name) == 1 and 'longargument' not in properties:
name = self.prefix_chars + name
else:
name = self.prefix_chars * 2 + name
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if err.proptype == ['mandatory']:
self.error('the following arguments are required: {}'.format(name))
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else:
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self.error('unrecognized arguments: {}'.format(name))
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if valid_mandatory:
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errors = []
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for key in self.config.value.mandatory():
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properties = self.config.option(key).option.properties()
if not self.config.option(key).option.isfollower():
if 'positional' not in properties:
if self.fullpath or '.' not in key:
name = key
else:
name = key.rsplit('.', 1)[1]
is_short_name = self._is_short_name(name, 'longargument' in self.config.option(key).property.get())
args = self._gen_argument(name, is_short_name)
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else:
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args = key
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else:
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if 'positional' not in properties:
args = self._gen_argument(key, False)
else:
args = key
if not self.fullpath and '.' in args:
args = args.rsplit('.', 1)[1]
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if 'positional' not in properties:
args = self._gen_argument(args, False)
errors.append(args)
if errors:
self.error('the following arguments are required: {}'.format(', '.join(errors)))
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return namespaces
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def format_usage(self,
*args,
**kwargs):
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help_formatter = TiramisuCmdlineParser(self.config,
self.prog,
root=self.root,
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fullpath=self.fullpath,
remove_empty_od=self.remove_empty_od,
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display_modified_value=self.display_modified_value,
formatter_class=self.formatter_class,
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epilog=self.epilog,
description=self.description,
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_forhelp=True)
return super(TiramisuCmdlineParser, help_formatter).format_usage(*args, **kwargs)
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def format_help(self):
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help_formatter = TiramisuCmdlineParser(self.config,
self.prog,
root=self.root,
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fullpath=self.fullpath,
remove_empty_od=self.remove_empty_od,
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display_modified_value=self.display_modified_value,
formatter_class=self.formatter_class,
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epilog=self.epilog,
description=self.description,
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_forhelp=True)
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return super(TiramisuCmdlineParser, help_formatter).format_help()
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def get_config(self):
return self.config