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- # This file is part of Fusion-icon.
-
- # Fusion-icon 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 2 of the License, or
- # (at your option) any later version.
- #
- # Fusion-icon 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/>.
- #
- # Author(s): crdlb, nesl247
- #
- # Copyright 2007 Christopher Williams <christopherw@verizon.net>
-
- import subprocess, signal, os
-
- # avoid zombies
- signal.signal(signal.SIGCHLD, signal.SIG_IGN)
-
- def run(command, mode='spawn', quiet=False, env=None):
- 'Simple wrapper for the subprocess module. Supported modes: spawn, call, and output'
-
- try:
- if mode == 'spawn':
- if not quiet:
- popen_object = subprocess.Popen(command)
- else:
- popen_object = subprocess.Popen(command, stdout=open(os.devnull, 'w'))
-
- return popen_object
-
- elif mode == 'call':
- # restore normal child handling
- signal.signal(signal.SIGCHLD, signal.SIG_DFL)
- if not quiet:
- exitcode = subprocess.call(command, stderr=subprocess.PIPE)
- else:
- exitcode = subprocess.call(command, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
-
- # turn zombie protection back on
- signal.signal(signal.SIGCHLD, signal.SIG_IGN)
-
- return exitcode
-
- elif mode == 'output':
- signal.signal(signal.SIGCHLD, signal.SIG_DFL)
- if not env:
- output = subprocess.Popen(command, stdout=subprocess.PIPE, stderr=open(os.devnull, 'w')).communicate()[0]
- else:
- output = subprocess.Popen(command, stdout=subprocess.PIPE, stderr=open(os.devnull, 'w'), env=env).communicate()[0]
-
- signal.signal(signal.SIGCHLD, signal.SIG_IGN)
-
- return output
-
- except OSError:
- print ' * execution of "%s" failed' % ' '.join(command)
- return None
-