tools(templates): workflow improvments: - template theme can be specified in parenthesis: (some_theme)path/to/template.html. Withtout parenthesis, "default" is used - static content are supposed to be in [theme]/static, error pages in [theme]/error/[err_code].html - default page are used in some case (2 for now): if error page with specified code doesn't exists, a base page is used, and if a page doesn't exist for a theme, the same one for default theme is looked for - CSS files are automatically found for HTML pages - CSS files can be split, the'll be added in the template according to the page requested. - theme CSS file is looked for, and if not found the default theme equivalent is looked for. - each element of a path can be associated to a CSS file, and styles.css is always there. For instance if blog/articles.html is requested, the following CSS can be included: "styles.css", "blog.css", "blog_article.css". They all must be in /static - if the automatic finding of CSS files is not wanted, css_files arguments can be used instead, with full relative path (i.e. including theme) - CSS files can be merged and included inline with css_inline argument - root_path can be specified, it will be used as a prefix for static files - requested theme (which may differ from actual theme, e.g. if the template is not found and default one is used instead) is available in template with "theme" variable - added getThemeAndRoot method to retrieve theme and theme root path from template

#!/usr/bin/env python2
# -*- coding: utf-8 -*-

# SAT: a jabber client
# Copyright (C) 2009-2016 Jérôme Poisson (goffi@goffi.org)

# 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 sat.core.log import getLogger
log = getLogger(__name__)

try:

    import gettext

    _ = gettext.translation('sat', 'i18n', fallback=True).ugettext
    _translators = {None: gettext.NullTranslations()}

    def languageSwitch(lang=None):
        if not lang in _translators:
            _translators[lang] = gettext.translation('sat', languages=[lang], fallback=True)
        _translators[lang].install(unicode=True)

except ImportError:

    log.warning("gettext support disabled")
    _ = lambda msg: msg # Libervia doesn't support gettext
    def languageSwitch(lang=None):
        pass


D_ = lambda msg: msg # used for deferred translations