authentic/src/authentic2/utils/lazy.py

39 lines
1.3 KiB
Python

# authentic2 - versatile identity manager
# Copyright (C) 2010-2020 Entr'ouvert
#
# This program is free software: you can redistribute it and/or modify it
# under the terms of the GNU Affero 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 Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
from __future__ import unicode_literals
from django.utils.encoding import force_text
from django.utils.functional import keep_lazy
from django.utils.text import format_lazy
def lazy_join(join, args):
if not args:
return ''
fstring = '{}' + ''.join([join + '{}'] * (len(args) - 1))
return format_lazy(fstring, *args)
@keep_lazy(str)
def lazy_label(default, func):
"""Allow using a getter for a label, with late binding.
ex.: lazy_label(_('Default label'), lambda: app_settings.CUSTOM_LABEL)
"""
return force_text(func() or default)