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# vim:fileencoding=utf-8:noet
from __future__ import (unicode_literals, division, absolute_import, print_function)
import re
import os
import subprocess
from collections import namedtuple
from powerline.lib.shell import run_cmd
TmuxVersionInfo = namedtuple('TmuxVersionInfo', ('major', 'minor', 'suffix'))
def get_tmux_executable_name():
'''Returns tmux executable name
It should be defined in POWERLINE_TMUX_EXE environment variable, otherwise
it is simply “tmux”.
'''
return os.environ.get('POWERLINE_TMUX_EXE', 'tmux')
def _run_tmux(runner, args):
return runner([get_tmux_executable_name()] + list(args))
def run_tmux_command(*args):
'''Run tmux command, ignoring the output'''
_run_tmux(subprocess.check_call, args)
def get_tmux_output(pl, *args):
'''Run tmux command and return its output'''
return _run_tmux(lambda cmd: run_cmd(pl, cmd), args)
def set_tmux_environment(varname, value, remove=True):
'''Set tmux global environment variable
:param str varname:
Name of the variable to set.
:param str value:
Variable value.
:param bool remove:
True if variable should be removed from the environment prior to
attaching any client (runs ``tmux set-environment -r {varname}``).
'''
run_tmux_command('set-environment', '-g', varname, value)
if remove:
try:
run_tmux_command('set-environment', '-r', varname)
except subprocess.CalledProcessError:
# On tmux-2.0 this command may fail for whatever reason. Since it is
# critical just ignore the failure.
pass
def source_tmux_file(fname):
'''Source tmux configuration file
:param str fname:
Full path to the sourced file.
'''
run_tmux_command('source', fname)
NON_DIGITS = re.compile('[^0-9]+')
DIGITS = re.compile('[0-9]+')
NON_LETTERS = re.compile('[^a-z]+')
def get_tmux_version(pl):
version_string = get_tmux_output(pl, '-V')
_, version_string = version_string.split(' ')
version_string = version_string.strip()
if version_string == 'master':
return TmuxVersionInfo(float('inf'), 0, version_string)
major, minor = version_string.split('.')
major = NON_DIGITS.subn('', major)[0]
suffix = DIGITS.subn('', minor)[0] or None
minor = NON_DIGITS.subn('', minor)[0]
return TmuxVersionInfo(int(major), int(minor), suffix)
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