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

# SàT: a XMPP 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/>.

import sys

class ANSI(object):

    ## ANSI escape sequences ##
    RESET = '\033[0m'
    NORMAL_WEIGHT = '\033[22m'
    FG_BLACK, FG_RED, FG_GREEN, FG_YELLOW, FG_BLUE, FG_MAGENTA, FG_CYAN, FG_WHITE = ('\033[3%dm' % nb for nb in xrange(8))
    BOLD = '\033[1m'
    BLINK = '\033[5m'
    BLINK_OFF = '\033[25m'

    @classmethod
    def color(cls, *args):
        """output text using ANSI codes

        this method simply merge arguments, and add RESET if is not the last arguments
        """
        # XXX: we expect to have at least on argument
        if args[-1] != cls.RESET:
            args = list(args)
            args.append(cls.RESET)
        return u''.join(args)


if not sys.stdout.isatty():
    # we don't want ANSI escape codes if we are not outputing to a tty!
    for attr in dir(ANSI):
        if isinstance(getattr(ANSI, attr), basestring):
            setattr(ANSI, attr, u'')