core, frontends: refactoring to base Libervia on QuickFrontend (big mixed commit): /!\ not finished, everything is still instable ! - bridge: DBus bridge has been modified to allow blocking call to be called in the same way as asynchronous calls - bridge: calls with a callback and no errback are now possible, default errback log the error - constants: removed hack to manage presence without OrderedDict, as an OrderedDict like class has been implemented in Libervia - core: getLastResource has been removed and replaced by getMainResource (there is a global better management of resources) - various style improvments: use of constants when possible, fixed variable overlaps, import of module instead of direct class import - frontends: printInfo and printMessage methods in (Quick)Chat are more generic (use of extra instead of timestamp) - frontends: bridge creation and option parsing (command line arguments) are now specified by the frontend in QuickApp __init__ - frontends: ProfileManager manage a more complete plug sequence (some stuff formerly manage in contact_list have moved to ProfileManager) - quick_frontend (quick_widgets): QuickWidgetsManager is now iterable (all widgets are then returned), or can return an iterator on a specific class (return all widgets of this class) with getWidgets - frontends: tools.jid can now be used in Pyjamas, with some care - frontends (XMLUI): profile is now managed - core (memory): big improvment on entities cache management (and specially resource management) - core (params/exceptions): added PermissionError - various fixes and improvments, check diff for more details

#!/usr/bin/python
# -*- coding: utf-8 -*-

# SAT: a jabber client
# Copyright (C) 2009, 2010, 2011, 2012, 2013, 2014 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/>.

""" various useful methods """

import unicodedata


def clean_ustr(ustr):
    """Clean unicode string
    remove special characters from unicode string"""
    def valid_chars(unicode_source):
        for char in unicode_source:
            if unicodedata.category(char) == 'Cc' and char!='\n':
                continue
            yield char
    return ''.join(valid_chars(ustr))