about summary refs log tree commit diff stats
path: root/ranger/ext/get_executables.py
blob: 22c08eb9f1fe193c5c74eca79076f981d75aa255 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
# Copyright (C) 2009, 2010  Roman Zimbelmann <romanz@lavabit.com>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

from stat import S_IXOTH, S_IFREG
from ranger.ext.iter_tools import unique
from os import listdir, environ, stat
from os.path import join


_cached_executables = None


def get_executables():
	"""
	Return all executable files in each of the given directories.

	Looks in $PATH by default.
	"""
	global _cached_executables
	if _cached_executables is None:
		_cached_executables = sorted(get_executables_uncached())
	return _cached_executables


def get_executables_uncached(*paths):
	"""
	Return all executable files in each of the given directories.

	Looks in $PATH by default.
	"""
	if not paths:
		try:
			pathstring = environ['PATH']
		except KeyError:
			return ()
		paths = unique(pathstring.split(':'))

	executables = set()
	for path in paths:
		try:
			content = listdir(path)
		except:
			continue
		for item in content:
			abspath = join(path, item)
			try:
				filestat = stat(abspath)
			except:
				continue
			if filestat.st_mode & (S_IXOTH | S_IFREG):
				executables.add(item)
	return executables