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annotate src/tools/common/ansi.py @ 2154:7cbffd754b4a

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core (constants), tools (common/ansi): moved ANSI escape codes to a dedicated class, with helper methods
author Goffi <goffi@goffi.org>
date Thu, 16 Feb 2017 00:44:54 +0100
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children a0fbb2b11fd0
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2154
7cbffd754b4a core (constants), tools (common/ansi): moved ANSI escape codes to a dedicated class, with helper methods
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1 #!/usr/bin/env python2
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2 # -*- coding: utf-8 -*-
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3
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4 # SàT: a XMPP client
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5 # Copyright (C) 2009-2016 Jérôme Poisson (goffi@goffi.org)
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6
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7 # This program is free software: you can redistribute it and/or modify
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8 # it under the terms of the GNU Affero General Public License as published by
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9 # the Free Software Foundation, either version 3 of the License, or
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10 # (at your option) any later version.
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11
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12 # This program is distributed in the hope that it will be useful,
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13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 # GNU Affero General Public License for more details.
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16
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17 # You should have received a copy of the GNU Affero General Public License
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18 # along with this program. If not, see <http://www.gnu.org/licenses/>.
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19
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20 import sys
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21
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22 class ANSI(object):
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23
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24 ## ANSI escape sequences ##
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25 RESET = '\033[0m'
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26 NORMAL_WEIGHT = '\033[22m'
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27 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))
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28 BOLD = '\033[1m'
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29 BLINK = '\033[5m'
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30 BLINK_OFF = '\033[25m'
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31
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32 @classmethod
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33 def color(cls, *args):
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34 """output text using ANSI codes
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35
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36 this method simply merge arguments, and add RESET if is not the last arguments
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37 """
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38 # XXX: we expect to have at least on argument
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39 if args[-1] != cls.RESET:
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40 args = list(args)
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41 args.append(cls.RESET)
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42 return u''.join(args)
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43
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44
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45 if not sys.stdout.isatty():
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46 # we don't want ANSI escape codes if we are not outputing to a tty!
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47 for attr in dir(ANSI):
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48 if isinstance(getattr(ANSI, attr), basestring):
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49 setattr(ANSI, attr, u'')