620 lines
26 KiB
Python
620 lines
26 KiB
Python
# -*- coding: utf-8 -*-
|
|
"takes care of the option's values and multi values"
|
|
# Copyright (C) 2013-2018 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/>.
|
|
# ____________________________________________________________
|
|
import weakref
|
|
from .error import ConfigError, PropertiesOptionError
|
|
from .setting import owners, expires_time, undefined, forbidden_owners, OptionBag, ConfigBag
|
|
from .autolib import carry_out_calculation
|
|
from .i18n import _
|
|
|
|
|
|
class Values(object):
|
|
"""The `Config`'s root is indeed in charge of the `Option()`'s values,
|
|
but the values are physicaly located here, in `Values`, wich is also
|
|
responsible of a caching utility.
|
|
"""
|
|
__slots__ = ('_p_',
|
|
'__weakref__')
|
|
|
|
def __init__(self,
|
|
storage):
|
|
"""
|
|
Initializes the values's dict.
|
|
|
|
:param storage: where values or owners are stored
|
|
|
|
"""
|
|
# store the storage
|
|
self._p_ = storage
|
|
|
|
#______________________________________________________________________
|
|
# get value
|
|
|
|
def get_cached_value(self,
|
|
option_bag):
|
|
"""get value directly in cache if set
|
|
otherwise calculated value and set it in cache
|
|
|
|
:returns: value
|
|
"""
|
|
# try to retrive value in cache
|
|
setting_properties = option_bag.config_bag.properties
|
|
is_cached, value = self._p_.getcache(option_bag.path,
|
|
expires_time,
|
|
option_bag.index,
|
|
setting_properties,
|
|
option_bag.properties,
|
|
'value')
|
|
|
|
if not is_cached:
|
|
# no cached value so get value
|
|
value = self.getvalue(option_bag)
|
|
# validate value
|
|
context = option_bag.config_bag.context
|
|
opt = option_bag.option
|
|
opt.impl_validate(value,
|
|
option_bag,
|
|
context=context,
|
|
check_error=True)
|
|
if 'warnings' in setting_properties:
|
|
opt.impl_validate(value,
|
|
option_bag,
|
|
context=context,
|
|
check_error=False)
|
|
# store value in cache
|
|
if not is_cached:
|
|
self._p_.setcache(option_bag.path,
|
|
option_bag.index,
|
|
value,
|
|
option_bag.properties,
|
|
setting_properties)
|
|
if isinstance(value, list):
|
|
# return a copy, so value cannot be modified
|
|
return value.copy()
|
|
# and return it
|
|
return value
|
|
|
|
def getvalue(self,
|
|
option_bag):
|
|
"""actually retrieves the value
|
|
|
|
:param path: the path of the `Option`
|
|
:param index: index for a slave `Option`
|
|
|
|
:returns: value
|
|
"""
|
|
# get owner and value from store
|
|
# index allowed only for slave
|
|
index = option_bag.index
|
|
is_slave = option_bag.option.impl_is_master_slaves('slave')
|
|
if index is None or not is_slave:
|
|
_index = None
|
|
else:
|
|
_index = index
|
|
owner, value = self._p_.getowner(option_bag.path,
|
|
owners.default,
|
|
index=_index,
|
|
with_value=True)
|
|
|
|
if owner != owners.default:
|
|
# if a value is store in storage, check if not frozen + force_default_on_freeze
|
|
# if frozen + force_default_on_freeze => force default value
|
|
if not ('frozen' in option_bag.properties and \
|
|
'force_default_on_freeze' in option_bag.properties):
|
|
if index is not None and not is_slave:
|
|
if len(value) > index:
|
|
return value[index]
|
|
#value is smaller than expected
|
|
#so return default value
|
|
else:
|
|
return value
|
|
return self.getdefaultvalue(option_bag)
|
|
|
|
def getdefaultvalue(self,
|
|
option_bag):
|
|
"""get default value:
|
|
- get meta config value or
|
|
- get calculated value or
|
|
- get default value
|
|
:param opt: the `option.Option()` object
|
|
:param path: path for `option.Option()` object
|
|
:type path: str
|
|
:param index: index of a multi/submulti
|
|
:type index: int
|
|
:returns: default value
|
|
"""
|
|
config_bag = option_bag.config_bag
|
|
context = config_bag.context
|
|
opt = option_bag.option
|
|
index = option_bag.index
|
|
def _reset_cache(_value):
|
|
if not 'expire' in option_bag.properties:
|
|
return
|
|
is_cache, cache_value = self._p_.getcache(option_bag.path,
|
|
None,
|
|
index,
|
|
config_bag.properties,
|
|
option_bag.properties,
|
|
'value')
|
|
if not is_cache or cache_value == _value:
|
|
# calculation return same value as previous value,
|
|
# so do not invalidate cache
|
|
return
|
|
# calculated value is a new value, so reset cache
|
|
context.cfgimpl_reset_cache(option_bag)
|
|
|
|
if opt.impl_is_master_slaves('slave'):
|
|
index_ = index
|
|
else:
|
|
index_ = None
|
|
if option_bag.index != index_:
|
|
moption_bag = OptionBag()
|
|
moption_bag.set_option(opt,
|
|
option_bag.path,
|
|
index_,
|
|
config_bag)
|
|
moption_bag.fromconsistency = option_bag.fromconsistency.copy()
|
|
else:
|
|
moption_bag = option_bag
|
|
if self._is_meta(moption_bag):
|
|
moption_bag.properties = frozenset()
|
|
meta = context.cfgimpl_get_meta()
|
|
# retrieved value from meta config
|
|
return meta.cfgimpl_get_values().get_cached_value(moption_bag)
|
|
|
|
if opt.impl_has_callback():
|
|
# if value has callback, calculate value
|
|
callback, callback_params = opt.impl_get_callback()
|
|
value = carry_out_calculation(opt,
|
|
context=context,
|
|
callback=callback,
|
|
callback_params=callback_params,
|
|
index=index,
|
|
option_bag=option_bag)
|
|
if isinstance(value, list) and index is not None:
|
|
# if value is a list and index is set
|
|
if opt.impl_is_submulti() and (value == [] or not isinstance(value[0], list)):
|
|
# return value only if it's a submulti and not a list of list
|
|
_reset_cache(value)
|
|
return value
|
|
|
|
if len(value) > index:
|
|
# return the value for specified index if found
|
|
_reset_cache(value[index])
|
|
return value[index]
|
|
# there is no calculate value for this index,
|
|
# so return an other default value
|
|
else:
|
|
if opt.impl_is_submulti():
|
|
if isinstance(value, list):
|
|
# value is a list, but no index specified
|
|
if (value != [] and not isinstance(value[0], list)):
|
|
# if submulti, return a list of value
|
|
value = [value]
|
|
elif index is not None:
|
|
# if submulti, return a list of value
|
|
value = [value]
|
|
else:
|
|
# return a list of list for a submulti
|
|
value = [[value]]
|
|
elif opt.impl_is_multi() and not isinstance(value, list) and index is None:
|
|
# return a list for a multi
|
|
value = [value]
|
|
_reset_cache(value)
|
|
return value
|
|
|
|
# now try to get default value:
|
|
# - if opt is a submulti, return a list a list
|
|
# - if opt is a multi, return a list
|
|
# - default value
|
|
value = opt.impl_getdefault()
|
|
if opt.impl_is_multi() and index is not None:
|
|
# if index, must return good value for this index
|
|
if len(value) > index:
|
|
value = value[index]
|
|
else:
|
|
# no value for this index, retrieve default multi value
|
|
# default_multi is already a list for submulti
|
|
value = opt.impl_getdefault_multi()
|
|
return value
|
|
|
|
def isempty(self,
|
|
opt,
|
|
value,
|
|
force_allow_empty_list=False,
|
|
index=None):
|
|
"convenience method to know if an option is empty"
|
|
empty = opt._empty
|
|
if index in [None, undefined] and opt.impl_is_multi():
|
|
if force_allow_empty_list:
|
|
allow_empty_list = True
|
|
else:
|
|
allow_empty_list = opt.impl_allow_empty_list()
|
|
if allow_empty_list is undefined:
|
|
allow_empty_list = opt.impl_is_master_slaves('slave')
|
|
isempty = value is None or (not allow_empty_list and value == []) or \
|
|
None in value or empty in value
|
|
else:
|
|
isempty = value is None or value == empty
|
|
return isempty
|
|
|
|
#______________________________________________________________________
|
|
# set value
|
|
|
|
def setvalue(self,
|
|
value,
|
|
option_bag,
|
|
_commit):
|
|
|
|
context = option_bag.config_bag.context
|
|
owner = context.cfgimpl_get_settings().getowner()
|
|
if 'validator' in option_bag.config_bag.properties:
|
|
if option_bag.index is not None or option_bag.option._has_consistencies(context):
|
|
# set value to a fake config when option has dependency
|
|
# validation will be complet in this case (consistency, ...)
|
|
tested_context = context._gen_fake_values()
|
|
config_bag = option_bag.config_bag.copy()
|
|
config_bag.remove_validation()
|
|
config_bag.context = tested_context
|
|
soption_bag = option_bag.copy()
|
|
soption_bag.config_bag = config_bag
|
|
tested_context.cfgimpl_get_values().setvalue(value,
|
|
soption_bag,
|
|
True)
|
|
soption_bag.config_bag.properties = option_bag.config_bag.properties
|
|
tested_context.getattr(soption_bag.path,
|
|
soption_bag)
|
|
else:
|
|
self.setvalue_validation(value,
|
|
option_bag)
|
|
|
|
self._setvalue(option_bag,
|
|
value,
|
|
owner,
|
|
commit=_commit)
|
|
|
|
def setvalue_validation(self,
|
|
value,
|
|
option_bag):
|
|
|
|
context = option_bag.config_bag.context
|
|
settings = context.cfgimpl_get_settings()
|
|
# First validate properties with this value
|
|
opt = option_bag.option
|
|
settings.validate_frozen(option_bag)
|
|
settings.validate_mandatory(value,
|
|
option_bag)
|
|
# Value must be valid for option
|
|
opt.impl_validate(value,
|
|
option_bag,
|
|
context,
|
|
check_error=True)
|
|
if 'warnings' in option_bag.config_bag.properties:
|
|
# No error found so emit warnings
|
|
opt.impl_validate(value,
|
|
option_bag,
|
|
context,
|
|
check_error=False)
|
|
|
|
def _setvalue(self,
|
|
option_bag,
|
|
value,
|
|
owner,
|
|
commit=True):
|
|
|
|
option_bag.config_bag.context.cfgimpl_reset_cache(option_bag)
|
|
if isinstance(value, list):
|
|
# copy
|
|
value = value.copy()
|
|
self._p_.setvalue(option_bag.path,
|
|
value,
|
|
owner,
|
|
option_bag.index,
|
|
commit)
|
|
|
|
def _is_meta(self,
|
|
option_bag):
|
|
context = option_bag.config_bag.context
|
|
meta = context.cfgimpl_get_meta()
|
|
if meta is None:
|
|
return False
|
|
if option_bag.option.impl_is_master_slaves('slave'):
|
|
master = option_bag.option.impl_get_master_slaves().getmaster()
|
|
masterp = master.impl_getpath()
|
|
# slave could be a "meta" only if master hasn't value
|
|
if self._p_.hasvalue(masterp,
|
|
index=None):
|
|
return False
|
|
doption_bag = option_bag.copy()
|
|
config_bag = option_bag.config_bag.copy()
|
|
config_bag.context = meta
|
|
doption_bag.config_bag = config_bag
|
|
return not meta.cfgimpl_get_values().is_default_owner(doption_bag)
|
|
|
|
|
|
#______________________________________________________________________
|
|
# owner
|
|
|
|
def is_default_owner(self,
|
|
option_bag,
|
|
validate_meta=undefined):
|
|
return self.getowner(option_bag,
|
|
validate_meta=validate_meta,
|
|
only_default=True) == owners.default
|
|
|
|
def getowner(self,
|
|
option_bag,
|
|
validate_meta=True,
|
|
only_default=False):
|
|
"""
|
|
retrieves the option's owner
|
|
|
|
:param opt: the `option.Option` object
|
|
:param force_permissive: behaves as if the permissive property
|
|
was present
|
|
:returns: a `setting.owners.Owner` object
|
|
"""
|
|
context = option_bag.config_bag.context
|
|
opt = option_bag.option
|
|
if opt.impl_is_symlinkoption():
|
|
option_bag.ori_option = opt
|
|
opt = opt.impl_getopt()
|
|
option_bag.option = opt
|
|
option_bag.path = opt.impl_getpath()
|
|
settings = context.cfgimpl_get_settings()
|
|
settings.validate_properties(option_bag)
|
|
if 'frozen' in option_bag.properties and \
|
|
'force_default_on_freeze' in option_bag.properties:
|
|
return owners.default
|
|
if only_default:
|
|
if self._p_.hasvalue(option_bag.path,
|
|
option_bag.index):
|
|
owner = undefined
|
|
else:
|
|
owner = owners.default
|
|
else:
|
|
owner = self._p_.getowner(option_bag.path,
|
|
owners.default,
|
|
index=option_bag.index)
|
|
if owner is owners.default and validate_meta is not False and self._is_meta(option_bag):
|
|
moption_bag = option_bag.copy()
|
|
moption_bag.properties = frozenset()
|
|
config_bag = moption_bag.config_bag.copy()
|
|
meta = context.cfgimpl_get_meta()
|
|
config_bag.context = meta
|
|
moption_bag.config_bag = config_bag
|
|
owner = meta.cfgimpl_get_values().getowner(moption_bag,
|
|
only_default=only_default)
|
|
return owner
|
|
|
|
def setowner(self,
|
|
owner,
|
|
option_bag):
|
|
"""
|
|
sets a owner to an option
|
|
|
|
:param opt: the `option.Option` object
|
|
:param owner: a valid owner, that is a `setting.owners.Owner` object
|
|
"""
|
|
opt = option_bag.option
|
|
if opt.impl_is_symlinkoption():
|
|
raise ConfigError(_("can't set owner for the symlinkoption \"{}\""
|
|
"").format(opt.impl_get_display_name()))
|
|
if owner in forbidden_owners:
|
|
raise ConfigError(_('set owner "{0}" is forbidden').format(str(owner)))
|
|
|
|
if not self._p_.hasvalue(option_bag.path):
|
|
raise ConfigError(_('no value for {0} cannot change owner to {1}'
|
|
'').format(option_bag.path, owner))
|
|
option_bag.config_bag.context.cfgimpl_get_settings().validate_frozen(option_bag)
|
|
self._p_.setowner(option_bag.path,
|
|
owner,
|
|
index=option_bag.index)
|
|
#______________________________________________________________________
|
|
# reset
|
|
|
|
def reset(self,
|
|
option_bag,
|
|
_commit=True):
|
|
|
|
context = option_bag.config_bag.context
|
|
hasvalue = self._p_.hasvalue(option_bag.path)
|
|
|
|
if hasvalue and 'validator' in option_bag.config_bag.properties:
|
|
fake_context = context._gen_fake_values()
|
|
config_bag = option_bag.config_bag.copy()
|
|
config_bag.remove_validation()
|
|
config_bag.context = fake_context
|
|
soption_bag = option_bag.copy()
|
|
soption_bag.config_bag = config_bag
|
|
fake_value = fake_context.cfgimpl_get_values()
|
|
fake_value.reset(soption_bag)
|
|
soption_bag.config_bag.properties = option_bag.config_bag.properties
|
|
value = fake_value.getdefaultvalue(soption_bag)
|
|
fake_value.setvalue_validation(value,
|
|
soption_bag)
|
|
opt = option_bag.option
|
|
if opt.impl_is_master_slaves('master'):
|
|
opt.impl_get_master_slaves().reset(self,
|
|
option_bag,
|
|
_commit=_commit)
|
|
if hasvalue:
|
|
if 'force_store_value' in option_bag.properties:
|
|
value = self.getdefaultvalue(option_bag)
|
|
|
|
self._setvalue(option_bag,
|
|
value,
|
|
owners.forced,
|
|
commit=_commit)
|
|
else:
|
|
self._p_.resetvalue(option_bag.path,
|
|
_commit)
|
|
if not opt.impl_is_master_slaves('master'):
|
|
# if master, already reset behind
|
|
pass
|
|
context.cfgimpl_reset_cache(option_bag)
|
|
|
|
def reset_slave(self,
|
|
option_bag):
|
|
|
|
if self._p_.hasvalue(option_bag.path, index=option_bag.index):
|
|
context = option_bag.config_bag.context
|
|
if 'validator' in option_bag.config_bag.properties:
|
|
fake_context = context._gen_fake_values()
|
|
fake_value = fake_context.cfgimpl_get_values()
|
|
config_bag = option_bag.config_bag.copy()
|
|
config_bag.remove_validation()
|
|
config_bag.context = fake_context
|
|
soption_bag = option_bag.copy()
|
|
soption_bag.config_bag = config_bag
|
|
fake_value.reset_slave(soption_bag)
|
|
value = fake_value.getdefaultvalue(soption_bag)
|
|
fake_value.setvalue_validation(value,
|
|
soption_bag)
|
|
self._p_.resetvalue_index(option_bag.path, option_bag.index)
|
|
context.cfgimpl_reset_cache(option_bag)
|
|
|
|
def reset_master(self,
|
|
index,
|
|
option_bag,
|
|
subconfig):
|
|
|
|
current_value = self.get_cached_value(option_bag)
|
|
length = len(current_value)
|
|
if index >= length:
|
|
raise IndexError(_('index "{}" is higher than the length "{}" '
|
|
'for option "{}"').format(index,
|
|
length,
|
|
option_bag.option.impl_get_display_name()))
|
|
current_value.pop(index)
|
|
self.setvalue(current_value,
|
|
option_bag,
|
|
_commit=True)
|
|
subconfig.cfgimpl_get_description().pop(self,
|
|
index,
|
|
option_bag)
|
|
|
|
#______________________________________________________________________
|
|
# information
|
|
|
|
def set_information(self, key, value, path=None):
|
|
"""updates the information's attribute
|
|
|
|
:param key: information's key (ex: "help", "doc"
|
|
:param value: information's value (ex: "the help string")
|
|
"""
|
|
self._p_.set_information(path, key, value)
|
|
|
|
def get_information(self, key, default=undefined, path=None):
|
|
"""retrieves one information's item
|
|
|
|
:param key: the item string (ex: "help")
|
|
"""
|
|
return self._p_.get_information(path, key, default)
|
|
|
|
def del_information(self, key, raises=True, path=None):
|
|
self._p_.del_information(path, key, raises)
|
|
|
|
#______________________________________________________________________
|
|
# mandatory warnings
|
|
def _mandatory_warnings(self,
|
|
context,
|
|
config_bag,
|
|
description,
|
|
currpath,
|
|
config,
|
|
od_config_bag):
|
|
settings = context.cfgimpl_get_settings()
|
|
# for option in config.cfgimpl_get_children(self.config_bag):
|
|
for option in description.impl_getchildren(config_bag, context):
|
|
name = option.impl_getname()
|
|
path = '.'.join(currpath + [name])
|
|
|
|
if option.impl_is_optiondescription():
|
|
try:
|
|
option_bag = OptionBag()
|
|
option_bag.set_option(option,
|
|
path,
|
|
None,
|
|
od_config_bag)
|
|
subconfig = config.get_subconfig(name,
|
|
option_bag)
|
|
except PropertiesOptionError as err:
|
|
pass
|
|
else:
|
|
for path in self._mandatory_warnings(context,
|
|
config_bag,
|
|
option,
|
|
currpath + [name],
|
|
subconfig,
|
|
od_config_bag):
|
|
yield path
|
|
elif not option.impl_is_symlinkoption():
|
|
# don't verifying symlink
|
|
try:
|
|
if not option.impl_is_master_slaves('slave'):
|
|
option_bag = OptionBag()
|
|
option_bag.set_option(option,
|
|
path,
|
|
None,
|
|
config_bag)
|
|
if 'mandatory' in option_bag.properties or 'empty' in option_bag.properties:
|
|
config.getattr(name,
|
|
option_bag)
|
|
else:
|
|
for index in range(config.cfgimpl_get_length()):
|
|
option_bag = OptionBag()
|
|
option_bag.set_option(option,
|
|
path,
|
|
index,
|
|
config_bag)
|
|
if 'mandatory' in option_bag.properties:
|
|
config.getattr(name,
|
|
option_bag)
|
|
except PropertiesOptionError as err:
|
|
if err.proptype == ['mandatory']:
|
|
yield path
|
|
except ConfigError as err:
|
|
#assume that uncalculated value is an empty value
|
|
yield path
|
|
|
|
def mandatory_warnings(self,
|
|
config_bag):
|
|
"""convenience function to trace Options that are mandatory and
|
|
where no value has been set
|
|
|
|
:returns: generator of mandatory Option's path
|
|
"""
|
|
context = config_bag.context
|
|
# copy
|
|
od_setting_properties = config_bag.properties - {'mandatory', 'empty'}
|
|
setting_properties = set(config_bag.properties) - {'warnings'}
|
|
setting_properties.update(['mandatory', 'empty'])
|
|
config_bag = ConfigBag(context=config_bag.context)
|
|
config_bag.properties = frozenset(setting_properties)
|
|
config_bag.set_permissive()
|
|
od_config_bag = ConfigBag(context=config_bag.context)
|
|
od_config_bag.properties = frozenset(od_setting_properties)
|
|
od_config_bag.set_permissive()
|
|
|
|
descr = context.cfgimpl_get_description()
|
|
return self._mandatory_warnings(context,
|
|
config_bag,
|
|
descr,
|
|
[],
|
|
context,
|
|
od_config_bag)
|