725 lines
31 KiB
Python
725 lines
31 KiB
Python
# -*- coding: utf-8 -*-
|
|
# Copyright (C) 2012-2013 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/>.
|
|
#
|
|
# The original `Config` design model is unproudly borrowed from
|
|
# the rough pypy's guys: http://codespeak.net/svn/pypy/dist/pypy/config/
|
|
# the whole pypy projet is under MIT licence
|
|
# ____________________________________________________________
|
|
"options handler global entry point"
|
|
import weakref
|
|
from tiramisu.error import PropertiesOptionError, ConfigError
|
|
from tiramisu.option import OptionDescription, Option, SymLinkOption
|
|
from tiramisu.setting import groups, Settings, default_encoding, undefined
|
|
from tiramisu.storage import get_storages, get_storage, set_storage, \
|
|
_impl_getstate_setting
|
|
from tiramisu.value import Values, Multi
|
|
from tiramisu.i18n import _
|
|
|
|
|
|
class SubConfig(object):
|
|
"""Sub configuration management entry.
|
|
Tree if OptionDescription's responsability. SubConfig are generated
|
|
on-demand. A Config is also a SubConfig.
|
|
Root Config is call context below
|
|
"""
|
|
__slots__ = ('_impl_context', '_impl_descr', '_impl_path')
|
|
|
|
def __init__(self, descr, context, subpath=None):
|
|
""" Configuration option management master class
|
|
|
|
:param descr: describes the configuration schema
|
|
:type descr: an instance of ``option.OptionDescription``
|
|
:param context: the current root config
|
|
:type context: `Config`
|
|
:type subpath: `str` with the path name
|
|
"""
|
|
# main option description
|
|
if descr is not None and not isinstance(descr, OptionDescription):
|
|
raise TypeError(_('descr must be an optiondescription, not {0}'
|
|
).format(type(descr)))
|
|
self._impl_descr = descr
|
|
# sub option descriptions
|
|
if not isinstance(context, weakref.ReferenceType):
|
|
raise ValueError('context must be a Weakref')
|
|
self._impl_context = context
|
|
self._impl_path = subpath
|
|
|
|
def cfgimpl_reset_cache(self, only_expired=False, only=('values',
|
|
'settings')):
|
|
"remove cache (in context)"
|
|
self._cfgimpl_get_context().cfgimpl_reset_cache(only_expired, only)
|
|
|
|
def cfgimpl_get_home_by_path(self, path, force_permissive=False):
|
|
""":returns: tuple (config, name)"""
|
|
path = path.split('.')
|
|
for step in path[:-1]:
|
|
self = self.getattr(step,
|
|
force_permissive=force_permissive)
|
|
return self, path[-1]
|
|
|
|
#def __hash__(self):
|
|
#FIXME
|
|
# return hash(self.cfgimpl_get_description().impl_getkey(self))
|
|
|
|
#def __eq__(self, other):
|
|
#FIXME
|
|
# "Config's comparison"
|
|
# if not isinstance(other, Config):
|
|
# return False
|
|
# return self.cfgimpl_get_description().impl_getkey(self) == \
|
|
# other.cfgimpl_get_description().impl_getkey(other)
|
|
|
|
#def __ne__(self, other):
|
|
#FIXME
|
|
# "Config's comparison"
|
|
# if not isinstance(other, Config):
|
|
# return True
|
|
# return not self == other
|
|
|
|
# ______________________________________________________________________
|
|
def __iter__(self):
|
|
"""Pythonesque way of parsing group's ordered options.
|
|
iteration only on Options (not OptionDescriptions)"""
|
|
for child in self.cfgimpl_get_description().impl_getchildren():
|
|
if not isinstance(child, OptionDescription):
|
|
try:
|
|
yield child.impl_getname(), getattr(self, child.impl_getname())
|
|
except GeneratorExit:
|
|
raise StopIteration
|
|
except PropertiesOptionError:
|
|
pass # option with properties
|
|
|
|
def iter_all(self, force_permissive=False):
|
|
"""A way of parsing options **and** groups.
|
|
iteration on Options and OptionDescriptions."""
|
|
for child in self.cfgimpl_get_description().impl_getchildren():
|
|
try:
|
|
yield child.impl_getname(), self.getattr(child.impl_getname(),
|
|
force_permissive=force_permissive)
|
|
except GeneratorExit:
|
|
raise StopIteration
|
|
except PropertiesOptionError:
|
|
pass # option with properties
|
|
|
|
def iter_groups(self, group_type=None, force_permissive=False):
|
|
"""iteration on groups objects only.
|
|
All groups are returned if `group_type` is `None`, otherwise the groups
|
|
can be filtered by categories (families, or whatever).
|
|
|
|
:param group_type: if defined, is an instance of `groups.GroupType`
|
|
or `groups.MasterGroupType` that lives in
|
|
`setting.groups`
|
|
"""
|
|
if group_type is not None and not isinstance(group_type,
|
|
groups.GroupType):
|
|
raise TypeError(_("unknown group_type: {0}").format(group_type))
|
|
for child in self.cfgimpl_get_description().impl_getchildren():
|
|
if isinstance(child, OptionDescription):
|
|
try:
|
|
if group_type is None or (group_type is not None and
|
|
child.impl_get_group_type()
|
|
== group_type):
|
|
yield child.impl_getname(), self.getattr(child.impl_getname(),
|
|
force_permissive=force_permissive)
|
|
except GeneratorExit:
|
|
raise StopIteration
|
|
except PropertiesOptionError:
|
|
pass
|
|
# ______________________________________________________________________
|
|
|
|
def __str__(self):
|
|
"Config's string representation"
|
|
lines = []
|
|
for name, grp in self.iter_groups():
|
|
lines.append("[{0}]".format(name))
|
|
for name, value in self:
|
|
try:
|
|
lines.append("{0} = {1}".format(name, value))
|
|
except UnicodeEncodeError:
|
|
lines.append("{0} = {1}".format(name,
|
|
value.encode(default_encoding)))
|
|
return '\n'.join(lines)
|
|
|
|
__repr__ = __str__
|
|
|
|
def _cfgimpl_get_context(self):
|
|
"""context could be None, we need to test it
|
|
context is None only if all reference to `Config` object is deleted
|
|
(for example we delete a `Config` and we manipulate a reference to
|
|
old `SubConfig`, `Values`, `Multi` or `Settings`)
|
|
"""
|
|
context = self._impl_context()
|
|
if context is None:
|
|
raise ConfigError(_('the context does not exist anymore'))
|
|
return context
|
|
|
|
def cfgimpl_get_description(self):
|
|
if self._impl_descr is None:
|
|
raise ConfigError(_('no option description found for this config'
|
|
' (may be GroupConfig)'))
|
|
else:
|
|
return self._impl_descr
|
|
|
|
def cfgimpl_get_settings(self):
|
|
return self._cfgimpl_get_context()._impl_settings
|
|
|
|
def cfgimpl_get_values(self):
|
|
return self._cfgimpl_get_context()._impl_values
|
|
|
|
# ____________________________________________________________
|
|
# attribute methods
|
|
def __setattr__(self, name, value):
|
|
"attribute notation mechanism for the setting of the value of an option"
|
|
if name.startswith('_impl_'):
|
|
object.__setattr__(self, name, value)
|
|
return
|
|
self._setattr(name, value)
|
|
|
|
def _setattr(self, name, value, force_permissive=False):
|
|
if '.' in name:
|
|
homeconfig, name = self.cfgimpl_get_home_by_path(name)
|
|
return homeconfig.__setattr__(name, value)
|
|
child = getattr(self.cfgimpl_get_description(), name)
|
|
if isinstance(child, OptionDescription):
|
|
raise TypeError(_("can't assign to an OptionDescription"))
|
|
elif not isinstance(child, SymLinkOption):
|
|
if self._impl_path is None:
|
|
path = name
|
|
else:
|
|
path = self._impl_path + '.' + name
|
|
self.cfgimpl_get_values().setitem(child, value, path,
|
|
force_permissive=force_permissive)
|
|
else:
|
|
context = self._cfgimpl_get_context()
|
|
path = context.cfgimpl_get_description().impl_get_path_by_opt(
|
|
child._opt)
|
|
context._setattr(path, value, force_permissive=force_permissive)
|
|
|
|
def __delattr__(self, name):
|
|
child = getattr(self.cfgimpl_get_description(), name)
|
|
self.cfgimpl_get_values().__delitem__(child)
|
|
|
|
def __getattr__(self, name):
|
|
return self.getattr(name)
|
|
|
|
def _getattr(self, name, force_permissive=False, validate=True):
|
|
"""use getattr instead of _getattr
|
|
"""
|
|
return self.getattr(name, force_permissive, validate)
|
|
|
|
def getattr(self, name, force_permissive=False, validate=True):
|
|
"""
|
|
attribute notation mechanism for accessing the value of an option
|
|
:param name: attribute name
|
|
:return: option's value if name is an option name, OptionDescription
|
|
otherwise
|
|
"""
|
|
# attribute access by passing a path,
|
|
# for instance getattr(self, "creole.general.family.adresse_ip_eth0")
|
|
if '.' in name:
|
|
homeconfig, name = self.cfgimpl_get_home_by_path(
|
|
name, force_permissive=force_permissive)
|
|
return homeconfig.getattr(name, force_permissive=force_permissive,
|
|
validate=validate)
|
|
opt_or_descr = self.cfgimpl_get_description().__getattr__(name)
|
|
if self._impl_path is None:
|
|
subpath = name
|
|
else:
|
|
subpath = self._impl_path + '.' + name
|
|
# symlink options
|
|
#FIXME a gerer plutot dans l'option ca ...
|
|
#FIXME je n'en sais rien en fait ... :/
|
|
if isinstance(opt_or_descr, SymLinkOption):
|
|
context = self._cfgimpl_get_context()
|
|
path = context.cfgimpl_get_description().impl_get_path_by_opt(
|
|
opt_or_descr._opt)
|
|
return context.getattr(path, validate=validate,
|
|
force_permissive=force_permissive)
|
|
elif isinstance(opt_or_descr, OptionDescription):
|
|
self.cfgimpl_get_settings().validate_properties(
|
|
opt_or_descr, True, False, path=subpath,
|
|
force_permissive=force_permissive)
|
|
return SubConfig(opt_or_descr, self._impl_context, subpath)
|
|
else:
|
|
return self.cfgimpl_get_values()._get_cached_item(
|
|
opt_or_descr, path=subpath,
|
|
validate=validate,
|
|
force_permissive=force_permissive)
|
|
|
|
def find(self, bytype=None, byname=None, byvalue=undefined, type_='option',
|
|
check_properties=True, force_permissive=False):
|
|
"""
|
|
finds a list of options recursively in the config
|
|
|
|
:param bytype: Option class (BoolOption, StrOption, ...)
|
|
:param byname: filter by Option.impl_getname()
|
|
:param byvalue: filter by the option's value
|
|
:returns: list of matching Option objects
|
|
"""
|
|
return self._cfgimpl_get_context()._find(bytype, byname, byvalue,
|
|
first=False,
|
|
type_=type_,
|
|
_subpath=self.cfgimpl_get_path(),
|
|
check_properties=check_properties,
|
|
force_permissive=force_permissive)
|
|
|
|
def find_first(self, bytype=None, byname=None, byvalue=undefined,
|
|
type_='option', display_error=True, check_properties=True,
|
|
force_permissive=False):
|
|
"""
|
|
finds an option recursively in the config
|
|
|
|
:param bytype: Option class (BoolOption, StrOption, ...)
|
|
:param byname: filter by Option.impl_getname()
|
|
:param byvalue: filter by the option's value
|
|
:returns: list of matching Option objects
|
|
"""
|
|
return self._cfgimpl_get_context()._find(
|
|
bytype, byname, byvalue, first=True, type_=type_,
|
|
_subpath=self.cfgimpl_get_path(), display_error=display_error,
|
|
check_properties=check_properties,
|
|
force_permissive=force_permissive)
|
|
|
|
def _find(self, bytype, byname, byvalue, first, type_='option',
|
|
_subpath=None, check_properties=True, display_error=True,
|
|
force_permissive=False):
|
|
"""
|
|
convenience method for finding an option that lives only in the subtree
|
|
|
|
:param first: return only one option if True, a list otherwise
|
|
:return: find list or an exception if nothing has been found
|
|
"""
|
|
def _filter_by_value():
|
|
if byvalue is undefined:
|
|
return True
|
|
try:
|
|
value = self.getattr(path, force_permissive=force_permissive)
|
|
if isinstance(value, Multi):
|
|
return byvalue in value
|
|
else:
|
|
return value == byvalue
|
|
except PropertiesOptionError: # a property is a restriction
|
|
# upon the access of the value
|
|
return False
|
|
|
|
if type_ not in ('option', 'path', 'value'):
|
|
raise ValueError(_('unknown type_ type {0}'
|
|
'for _find').format(type_))
|
|
find_results = []
|
|
# if value and/or check_properties are set, need all avalaible option
|
|
# If first one has no good value or not good property check second one
|
|
# and so on
|
|
only_first = first is True and byvalue is None and check_properties is None
|
|
options = self.cfgimpl_get_description().impl_get_options_paths(
|
|
bytype, byname, _subpath, only_first)
|
|
for path, option in options:
|
|
if not _filter_by_value():
|
|
continue
|
|
#remove option with propertyerror, ...
|
|
if byvalue is undefined and check_properties:
|
|
try:
|
|
value = self.getattr(path,
|
|
force_permissive=force_permissive)
|
|
except PropertiesOptionError:
|
|
# a property restricts the access of the value
|
|
continue
|
|
if type_ == 'value':
|
|
retval = value
|
|
elif type_ == 'path':
|
|
retval = path
|
|
elif type_ == 'option':
|
|
retval = option
|
|
if first:
|
|
return retval
|
|
else:
|
|
find_results.append(retval)
|
|
return self._find_return_results(find_results, display_error)
|
|
|
|
def _find_return_results(self, find_results, display_error):
|
|
if find_results == []:
|
|
if display_error:
|
|
raise AttributeError(_("no option found in config"
|
|
" with these criteria"))
|
|
else:
|
|
# translation is slow
|
|
raise AttributeError()
|
|
else:
|
|
return find_results
|
|
|
|
def make_dict(self, flatten=False, _currpath=None, withoption=None,
|
|
withvalue=undefined, force_permissive=False):
|
|
"""exports the whole config into a `dict`, for example:
|
|
|
|
>>> print cfg.make_dict()
|
|
{'od2.var4': None, 'od2.var5': None, 'od2.var6': None}
|
|
|
|
|
|
|
|
:param flatten: returns a dict(name=value) instead of a dict(path=value)
|
|
::
|
|
|
|
>>> print cfg.make_dict(flatten=True)
|
|
{'var5': None, 'var4': None, 'var6': None}
|
|
|
|
:param withoption: returns the options that are present in the very same
|
|
`OptionDescription` than the `withoption` itself::
|
|
|
|
>>> print cfg.make_dict(withoption='var1')
|
|
{'od2.var4': None, 'od2.var5': None,
|
|
'od2.var6': None,
|
|
'od2.var1': u'value',
|
|
'od1.var1': None,
|
|
'od1.var3': None,
|
|
'od1.var2': None}
|
|
|
|
:param withvalue: returns the options that have the value `withvalue`
|
|
::
|
|
|
|
>>> print c.make_dict(withoption='var1',
|
|
withvalue=u'value')
|
|
{'od2.var4': None,
|
|
'od2.var5': None,
|
|
'od2.var6': None,
|
|
'od2.var1': u'value'}
|
|
|
|
:returns: dict of Option's name (or path) and values
|
|
"""
|
|
pathsvalues = []
|
|
if _currpath is None:
|
|
_currpath = []
|
|
if withoption is None and withvalue is not undefined:
|
|
raise ValueError(_("make_dict can't filtering with value without "
|
|
"option"))
|
|
if withoption is not None:
|
|
mypath = self.cfgimpl_get_path()
|
|
for path in self._cfgimpl_get_context()._find(bytype=None,
|
|
byname=withoption,
|
|
byvalue=withvalue,
|
|
first=False,
|
|
type_='path',
|
|
_subpath=mypath,
|
|
force_permissive=force_permissive):
|
|
path = '.'.join(path.split('.')[:-1])
|
|
opt = self._cfgimpl_get_context().cfgimpl_get_description(
|
|
).impl_get_opt_by_path(path)
|
|
if mypath is not None:
|
|
if mypath == path:
|
|
withoption = None
|
|
withvalue = undefined
|
|
break
|
|
else:
|
|
tmypath = mypath + '.'
|
|
if not path.startswith(tmypath):
|
|
raise AttributeError(_('unexpected path {0}, '
|
|
'should start with {1}'
|
|
'').format(path, mypath))
|
|
path = path[len(tmypath):]
|
|
self._make_sub_dict(opt, path, pathsvalues, _currpath, flatten,
|
|
force_permissive=force_permissive)
|
|
#withoption can be set to None below !
|
|
if withoption is None:
|
|
for opt in self.cfgimpl_get_description().impl_getchildren():
|
|
path = opt.impl_getname()
|
|
self._make_sub_dict(opt, path, pathsvalues, _currpath, flatten,
|
|
force_permissive=force_permissive)
|
|
if _currpath == []:
|
|
options = dict(pathsvalues)
|
|
return options
|
|
return pathsvalues
|
|
|
|
def _make_sub_dict(self, opt, path, pathsvalues, _currpath, flatten,
|
|
force_permissive=False):
|
|
try:
|
|
if isinstance(opt, OptionDescription):
|
|
pathsvalues += self.getattr(path,
|
|
force_permissive=force_permissive).make_dict(
|
|
flatten,
|
|
_currpath + path.split('.'),
|
|
force_permissive=force_permissive)
|
|
else:
|
|
value = self.getattr(opt.impl_getname(),
|
|
force_permissive=force_permissive)
|
|
if flatten:
|
|
name = opt.impl_getname()
|
|
else:
|
|
name = '.'.join(_currpath + [opt.impl_getname()])
|
|
pathsvalues.append((name, value))
|
|
except PropertiesOptionError:
|
|
pass
|
|
|
|
def cfgimpl_get_path(self):
|
|
descr = self.cfgimpl_get_description()
|
|
context_descr = self._cfgimpl_get_context().cfgimpl_get_description()
|
|
return context_descr.impl_get_path_by_opt(descr)
|
|
|
|
|
|
class _CommonConfig(SubConfig):
|
|
"abstract base class for the Config, GroupConfig and the MetaConfig"
|
|
__slots__ = ('_impl_values', '_impl_settings', '_impl_meta', '_impl_test')
|
|
|
|
def _impl_build_all_caches(self):
|
|
if not self.cfgimpl_get_description().impl_already_build_caches():
|
|
self.cfgimpl_get_description().impl_build_cache_consistency()
|
|
self.cfgimpl_get_description().impl_validate_options()
|
|
self.cfgimpl_get_description().impl_build_cache_option()
|
|
|
|
def read_only(self):
|
|
"read only is a global config's setting, see `settings.py`"
|
|
self.cfgimpl_get_settings().read_only()
|
|
|
|
def read_write(self):
|
|
"read write is a global config's setting, see `settings.py`"
|
|
self.cfgimpl_get_settings().read_write()
|
|
|
|
def getowner(self, opt, force_permissive=False):
|
|
"""convenience method to retrieve an option's owner
|
|
from the config itself
|
|
"""
|
|
if not isinstance(opt, Option) and not isinstance(opt, SymLinkOption):
|
|
raise TypeError(_('opt in getowner must be an option not {0}'
|
|
'').format(type(opt)))
|
|
return self.cfgimpl_get_values().getowner(opt,
|
|
force_permissive=force_permissive)
|
|
|
|
def unwrap_from_path(self, path, force_permissive=False):
|
|
"""convenience method to extract and Option() object from the Config()
|
|
and it is **fast**: finds the option directly in the appropriate
|
|
namespace
|
|
|
|
:returns: Option()
|
|
"""
|
|
if '.' in path:
|
|
homeconfig, path = self.cfgimpl_get_home_by_path(
|
|
path, force_permissive=force_permissive)
|
|
return getattr(homeconfig.cfgimpl_get_description(), path)
|
|
return getattr(self.cfgimpl_get_description(), path)
|
|
|
|
def cfgimpl_get_path(self):
|
|
return None
|
|
|
|
def cfgimpl_get_meta(self):
|
|
if self._impl_meta is not None:
|
|
return self._impl_meta()
|
|
|
|
# information
|
|
def impl_set_information(self, key, value):
|
|
"""updates the information's attribute
|
|
|
|
:param key: information's key (ex: "help", "doc"
|
|
:param value: information's value (ex: "the help string")
|
|
"""
|
|
self._impl_values.set_information(key, value)
|
|
|
|
def impl_get_information(self, key, default=undefined):
|
|
"""retrieves one information's item
|
|
|
|
:param key: the item string (ex: "help")
|
|
"""
|
|
return self._impl_values.get_information(key, default)
|
|
|
|
# ----- state
|
|
def __getstate__(self):
|
|
if self._impl_meta is not None:
|
|
raise ConfigError(_('cannot serialize Config with MetaConfig'))
|
|
slots = set()
|
|
for subclass in self.__class__.__mro__:
|
|
if subclass is not object:
|
|
slots.update(subclass.__slots__)
|
|
slots -= frozenset(['_impl_context', '_impl_meta', '__weakref__'])
|
|
state = {}
|
|
for slot in slots:
|
|
try:
|
|
state[slot] = getattr(self, slot)
|
|
except AttributeError:
|
|
pass
|
|
storage = self._impl_values._p_._storage
|
|
if not storage.serializable:
|
|
raise ConfigError(_('this storage is not serialisable, could be a '
|
|
'none persistent storage'))
|
|
state['_storage'] = {'session_id': storage.session_id,
|
|
'persistent': storage.persistent}
|
|
state['_impl_setting'] = _impl_getstate_setting()
|
|
return state
|
|
|
|
def __setstate__(self, state):
|
|
for key, value in state.items():
|
|
if key not in ['_storage', '_impl_setting']:
|
|
setattr(self, key, value)
|
|
set_storage('config', **state['_impl_setting'])
|
|
self._impl_context = weakref.ref(self)
|
|
self._impl_settings.context = weakref.ref(self)
|
|
self._impl_values.context = weakref.ref(self)
|
|
storage = get_storage('config', test=self._impl_test, **state['_storage'])
|
|
self._impl_values._impl_setstate(storage)
|
|
self._impl_settings._impl_setstate(storage)
|
|
self._impl_meta = None
|
|
|
|
|
|
# ____________________________________________________________
|
|
class Config(_CommonConfig):
|
|
"main configuration management entry"
|
|
__slots__ = ('__weakref__', '_impl_test')
|
|
|
|
def __init__(self, descr, session_id=None, persistent=False):
|
|
""" Configuration option management master class
|
|
|
|
:param descr: describes the configuration schema
|
|
:type descr: an instance of ``option.OptionDescription``
|
|
:param context: the current root config
|
|
:type context: `Config`
|
|
:param session_id: session ID is import with persistent Config to
|
|
retrieve good session
|
|
:type session_id: `str`
|
|
:param persistent: if persistent, don't delete storage when leaving
|
|
:type persistent: `boolean`
|
|
"""
|
|
settings, values = get_storages(self, session_id, persistent)
|
|
self._impl_settings = Settings(self, settings)
|
|
self._impl_values = Values(self, values)
|
|
super(Config, self).__init__(descr, weakref.ref(self))
|
|
self._impl_build_all_caches()
|
|
self._impl_meta = None
|
|
#undocumented option used only in test script
|
|
self._impl_test = False
|
|
|
|
def cfgimpl_reset_cache(self,
|
|
only_expired=False,
|
|
only=('values', 'settings')):
|
|
if 'values' in only:
|
|
self.cfgimpl_get_values().reset_cache(only_expired=only_expired)
|
|
if 'settings' in only:
|
|
self.cfgimpl_get_settings().reset_cache(only_expired=only_expired)
|
|
|
|
|
|
class GroupConfig(_CommonConfig):
|
|
__slots__ = ('_impl_children', '__weakref__')
|
|
|
|
def __init__(self, children, session_id=None, persistent=False,
|
|
_descr=None):
|
|
if not isinstance(children, list):
|
|
raise ValueError(_("metaconfig's children must be a list"))
|
|
self._impl_children = children
|
|
settings, values = get_storages(self, session_id, persistent)
|
|
self._impl_settings = Settings(self, settings)
|
|
self._impl_values = Values(self, values)
|
|
super(GroupConfig, self).__init__(_descr, weakref.ref(self))
|
|
self._impl_meta = None
|
|
#undocumented option used only in test script
|
|
self._impl_test = False
|
|
|
|
def cfgimpl_get_children(self):
|
|
return self._impl_children
|
|
|
|
#def cfgimpl_get_context(self):
|
|
# "a meta config is a config which has a setting, that is itself"
|
|
# return self
|
|
#
|
|
def cfgimpl_reset_cache(self,
|
|
only_expired=False,
|
|
only=('values', 'settings')):
|
|
if 'values' in only:
|
|
self.cfgimpl_get_values().reset_cache(only_expired=only_expired)
|
|
if 'settings' in only:
|
|
self.cfgimpl_get_settings().reset_cache(only_expired=only_expired)
|
|
for child in self._impl_children:
|
|
child.cfgimpl_reset_cache(only_expired=only_expired, only=only)
|
|
|
|
def setattrs(self, path, value):
|
|
"""Setattr not in current GroupConfig, but in each children
|
|
"""
|
|
for child in self._impl_children:
|
|
try:
|
|
if not isinstance(child, GroupConfig):
|
|
setattr(child, path, value)
|
|
else:
|
|
child.setattrs(path, value)
|
|
except PropertiesOptionError:
|
|
pass
|
|
|
|
def find_firsts(self, byname=None, bypath=None, byvalue=undefined,
|
|
type_='path', display_error=True):
|
|
"""Find first not in current GroupConfig, but in each children
|
|
"""
|
|
ret = []
|
|
#if MetaConfig, all children have same OptionDescription as context
|
|
#so search only one time for all children
|
|
try:
|
|
if bypath is None and byname is not None and \
|
|
isinstance(self, MetaConfig):
|
|
bypath = self._find(bytype=None, byvalue=undefined, byname=byname,
|
|
first=True, type_='path',
|
|
check_properties=False,
|
|
display_error=display_error)
|
|
byname = None
|
|
except AttributeError:
|
|
pass
|
|
for child in self._impl_children:
|
|
try:
|
|
if not isinstance(child, MetaConfig):
|
|
if bypath is not None:
|
|
#if byvalue is None, try if not raise
|
|
value = getattr(child, bypath)
|
|
if byvalue is not undefined:
|
|
if isinstance(value, Multi):
|
|
if byvalue in value:
|
|
ret.append(child)
|
|
else:
|
|
if value == byvalue:
|
|
ret.append(child)
|
|
else:
|
|
ret.append(child)
|
|
else:
|
|
ret.append(child.find_first(byname=byname,
|
|
byvalue=byvalue,
|
|
type_=type_,
|
|
display_error=False))
|
|
else:
|
|
ret.extend(child.find_firsts(byname=byname,
|
|
bypath=bypath,
|
|
byvalue=byvalue,
|
|
type_=type_,
|
|
display_error=False))
|
|
except AttributeError:
|
|
pass
|
|
return self._find_return_results(ret, display_error)
|
|
|
|
|
|
class MetaConfig(GroupConfig):
|
|
__slots__ = tuple()
|
|
|
|
def __init__(self, children, session_id=None, persistent=False):
|
|
descr = None
|
|
for child in children:
|
|
if not isinstance(child, _CommonConfig):
|
|
raise TypeError(_("metaconfig's children "
|
|
"should be config, not {0}"
|
|
).format(type(child)))
|
|
if child.cfgimpl_get_meta() is not None:
|
|
raise ValueError(_("child has already a metaconfig's"))
|
|
if descr is None:
|
|
descr = child.cfgimpl_get_description()
|
|
elif not descr is child.cfgimpl_get_description():
|
|
raise ValueError(_('all config in metaconfig must '
|
|
'have the same optiondescription'))
|
|
child._impl_meta = weakref.ref(self)
|
|
|
|
super(MetaConfig, self).__init__(children, session_id, persistent, descr)
|
|
|
|
|
|
def mandatory_warnings(config):
|
|
#only for retro-compatibility
|
|
return config.cfgimpl_get_values().mandatory_warnings()
|