#
# Copyright 2007 Zuza Software Foundation
#
# This file is part of translate.
#
# translate is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# translate 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, see <http://www.gnu.org/licenses/>.

"""
A class loader that will load C or Python implementations of the PO class
depending on the ``USECPO`` variable.

Use the environment variable ``USECPO=2`` (or ``USECPO=1``) to choose the
C implementation which uses Gettext's libgettextpo for high parsing speed.
Otherwise the local Python based parser is used (slower but very well
tested).
"""

import logging
import os
import platform

__all__ = ("lsep", "pofile", "pounit")

logger = logging.getLogger(__name__)
usecpo = os.getenv("USECPO")

if platform.python_implementation() == "CPython":
    if usecpo == "1":
        from translate.storage.cpo import lsep, pofile, pounit
    elif usecpo == "2":
        from translate.storage.fpo import lsep, pofile, pounit
    else:
        from translate.storage.pypo import lsep, pofile, pounit
else:
    if usecpo:
        logger.error(
            "cPO and fPO do not work on %s defaulting to PyPO",
            platform.python_implementation(),
        )
    from translate.storage.pypo import lsep, pofile, pounit
