--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libervia/backend/tools/common/ansi.py	Fri Jun 02 11:49:51 2023 +0200
@@ -0,0 +1,60 @@
+#!/usr/bin/env python3
+
+
+# Libervia: an XMPP client
+# Copyright (C) 2009-2021 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 range(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 one argument
+        if args[-1] != cls.RESET:
+            args = list(args)
+            args.append(cls.RESET)
+        return "".join(args)
+
+
+try:
+    tty = sys.stdout.isatty()
+except (
+    AttributeError,
+    TypeError,
+):  # FIXME: TypeError is here for Pyjamas, need to be removed
+    tty = False
+if not tty:
+    #  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), str):
+            setattr(ANSI, attr, "")
+del tty