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R3600/invenio/ext/babel/selectors.py
3f4c631dc166maint-1.1

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selectors.py
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# -*- coding: utf-8 -*-
#
# This file is part of Invenio.
# Copyright (C) 2012, 2013, 2014 CERN.
#
# Invenio 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.
#
# Invenio 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 Invenio; if not, write to the Free Software Foundation, Inc.,
# 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
"""Implement various localization selectors."""
from flask import request, session, current_app
from flask.ext.login import current_user
def get_locale():
"""Compute the language needed to return the answer to the client."""
from invenio.base.i18n import wash_language
required_ln = None
passed_ln = request.values.get('ln', type=str)
if passed_ln:
## If ln is specified explictly as a GET or POST argument
## let's take it!
required_ln = wash_language(passed_ln)
if passed_ln != required_ln:
## But only if it was a valid language
required_ln = None
if required_ln is None and 'ln' not in session:
## If there is no language saved into the session...
user_language = current_user.get('language')
if user_language:
## ... and the user is logged in, we try to take it from its
## settings.
required_ln = user_language
else:
## Otherwise we try to guess it from its request headers
for value, quality in request.accept_languages:
value = str(value)
ln = wash_language(value)
if ln == value or ln[:2] == value[:2]:
required_ln = ln
break
else:
## Too bad! We stick to the default :-)
required_ln = current_app.config.get('CFG_SITE_LANG')
elif required_ln is None:
required_ln = session.get('ln')
assert required_ln is not None
if required_ln != session.get('ln',
current_app.config.get('CFG_SITE_LANG')):
session['ln'] = required_ln
return required_ln
def get_timezone():
"""Return the timezone from user settings."""
return current_user.get('timezone')
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