def main(argv):
try:
from signal import signal, SIGHUP, SIGINT, SIG_IGN
signal(SIGHUP, SIG_IGN)
signal(SIGINT, SIG_IGN)
except ImportError:
# presumably we're on Windows: nothing to do
pass
try:
# this should work on posix systems and Windows with Python >= 2.6
subprocess.Popen(argv, close_fds=True)
except ValueError:
try:
# Python versions before 2.6 don't allow close_fds=True on Windows
import pywintypes
import win32process
try:
from nws.util import msc_argv2str, which
except ImportError:
# nws-python isn't installed, but we just need nwsutil.py
from nwsutil import msc_argv2str, which
if not os.path.isabs(argv[0]):
argv[0] = which(argv[0])[0]
commandLine = msc_argv2str(argv)
processSecurityAttributes = None
threadSecurityAttributes = None
fInheritHandles = 0
creationFlags = win32process.CREATE_NO_WINDOW
environment = None
currentDirectory = None
startupInfo = win32process.STARTUPINFO()
procHandle, threadHandle, procId, threadId = win32process.CreateProcess(
argv[0],
commandLine,
processSecurityAttributes,
threadSecurityAttributes,
fInheritHandles,
creationFlags,
environment,
currentDirectory,
startupInfo,
)
except ImportError:
# presumably we're on Windows using Python < 2.6
# we'll inherit handles, but this is better than nothing
subprocess.Popen(argv)
def _getRProg():
# try to find it using PATH first
m = which(_RNAME)
if m:
return m[0]
# try to find it using the latest version of R installed on this machine
rdirs = glob.glob(_RVERSIONPATTERN)
rdirs.sort()
rdirs.reverse() # latest version of R first
rprogs = [os.path.join(d, 'bin', _RNAME) for d in rdirs]
for rprog in rprogs:
if os.path.exists(rprog):
return rprog
else:
return None
def _getPythonProg():
m = which(_PYTHONNAME)
if m:
return m[0]
return _DEFAULTINTERP
