File: str.py

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# -*- coding: utf-8 -*-

# Copyright (C) 2016-2016 Martin Sandve Aln├Žs
#
# This file is part of UFL.
#
# UFL 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.
#
# UFL 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 UFL. If not, see <http://www.gnu.org/licenses/>.

"""String compatibility utilities."""


def as_unicode(s):
    "Return s if unicode string, or decode bytes to unicode string using utf-8."
    if isinstance(s, bytes):
        return s.decode("utf-8")
    else:
        return s