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#
# Copyright (C) 2018 Codethink Limited
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2 of the License, or (at your option) any later version.
#
# This library 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
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library. If not, see <http://www.gnu.org/licenses/>.
#
# Authors:
# Tristan Van Berkom <tristan.vanberkom@codethink.co.uk>
import os
import click
from .app import App
# This trick is currently only supported on some terminals,
# avoid using it where it can cause garbage to be printed
# to the terminal.
#
def _osc_777_supported():
term = os.environ.get('TERM')
if term and (term.startswith('xterm') or term.startswith('vte')):
# Since vte version 4600, upstream silently ignores
# the OSC 777 without printing garbage to the terminal.
#
# For distros like Fedora who have patched vte, this
# will trigger a desktop notification and bring attention
# to the terminal.
#
vte_version = os.environ.get('VTE_VERSION')
try:
vte_version_int = int(vte_version)
except (ValueError, TypeError):
return False
if vte_version_int >= 4600:
return True
return False
# A linux specific App implementation
#
class LinuxApp(App):
def notify(self, title, text):
# Currently we only try this notification method
# of sending an escape sequence to the terminal
#
if _osc_777_supported():
click.echo("\033]777;notify;{};{}\007".format(title, text), err=True)
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