Source code for stoqlib.lib.process

# -*- coding: utf-8 -*-
# vi:si:et:sw=4:sts=4:ts=4

##
## Copyright (C) 2011 Async Open Source
##
## This program is free software; you can redistribute it and/or
## modify it under the terms of the GNU Lesser General Public License
## as published by the Free Software Foundation; either version 2
## 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 Lesser General Public License for more details.
##
## You should have received a copy of the GNU Lesser General Public License
## along with this program; if not, write to the Free Software
## Foundation, Inc., or visit: http://www.gnu.org/.
##
##
## Author(s): Stoq Team <stoq-devel@async.com.br>
##

"""Platform abstracted Process utilitites"""

import os
import platform
import subprocess
import sys

PIPE = subprocess.PIPE


[docs]class Process(subprocess.Popen): def __init__(self, args, bufsize=0, executable=None, stdin=None, stdout=None, stderr=None, shell=False, cwd=None, env=None, quiet=True): if quiet and platform.system() == 'Windows': startupinfo = subprocess.STARTUPINFO() startupinfo.dwFlags |= subprocess._subprocess.STARTF_USESHOWWINDOW # Workaround for problem described here: # http://www.py2exe.org/index.cgi/Py2ExeSubprocessInteractions # http://bytes.com/topic/python/answers/634409-subprocess-handle-invalid-error # # Basically, py2exe apps have no parent process, so they cant inherit # the parent handles (for stdin, stdout and stderr). In this case, # we must always pipe all those handles (if the call site didn't # already) if hasattr(sys, 'frozen'): if stdout is None: stdout = PIPE if stderr is None: stderr = PIPE if stdin is None: stdin = PIPE else: startupinfo = None if env is None: env = os.environ.copy() # Make sure stdout/stderr will not be buffered env['PYTHONUNBUFFERED'] = '1' subprocess.Popen.__init__(self, args, bufsize, executable, stdin=stdin, stdout=stdout, stderr=stderr, shell=shell, cwd=cwd, env=env, startupinfo=startupinfo)