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
|
# Low level unix utility functions
#
# Copyright (C) 2016 Kevin O'Connor <kevin@koconnor.net>
#
# This file may be distributed under the terms of the GNU GPLv3 license.
import os, pty, fcntl, termios, signal, logging, subprocess, traceback, shlex
# Return the SIGINT interrupt handler back to the OS default
def fix_sigint():
signal.signal(signal.SIGINT, signal.SIG_DFL)
fix_sigint()
# Set a file-descriptor as non-blocking
def set_nonblock(fd):
fcntl.fcntl(fd, fcntl.F_SETFL
, fcntl.fcntl(fd, fcntl.F_GETFL) | os.O_NONBLOCK)
# Clear HUPCL flag
def clear_hupcl(fd):
attrs = termios.tcgetattr(fd)
attrs[2] = attrs[2] & ~termios.HUPCL
termios.tcsetattr(fd, termios.TCSADRAIN, attrs)
# Support for creating a pseudo-tty for emulating a serial port
def create_pty(ptyname):
mfd, sfd = pty.openpty()
try:
os.unlink(ptyname)
except os.error:
pass
os.symlink(os.ttyname(sfd), ptyname)
fcntl.fcntl(mfd, fcntl.F_SETFL
, fcntl.fcntl(mfd, fcntl.F_GETFL) | os.O_NONBLOCK)
old = termios.tcgetattr(mfd)
old[3] = old[3] & ~termios.ECHO
termios.tcsetattr(mfd, termios.TCSADRAIN, old)
return mfd
def get_git_version():
# Obtain version info from "git" program
if not os.path.exists('.git'):
logging.debug("No '.git' file/directory found")
return "?"
prog = "git describe --tags --long --dirty"
try:
process = subprocess.Popen(shlex.split(prog), stdout=subprocess.PIPE)
output = process.communicate()[0]
retcode = process.poll()
except OSError:
logging.debug("Exception on run: %s" % (traceback.format_exc(),))
return "?"
return output.strip()
|
