1 files changed, 85 insertions, 0 deletions
diff --git a/powerline/bindings/tmux/__init__.py b/powerline/bindings/tmux/__init__.py
new file mode 100644
index 0000000..eb84e7a
--- /dev/null
+++ b/powerline/bindings/tmux/__init__.py
@@ -0,0 +1,85 @@
+# 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)