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#!/usr/bin/env python3
# -*- coding: utf-8 -*-
'''
featherweight – A lightweight terminal news feed reader
Copyright © 2013 Mattias Andrée (maandree@member.fsf.org)
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/>.
'''
import fcntl
def touch(file):
file = open(file, 'a')
file.flush()
return file
def flock(file, exclusive, nonblocking = False):
locktype = (LOCK_fcntl.EX if exclusive else fcntl.LOCK_SH) | (fcntl.LOCK_NB if nonblocking else 0)
fcntl.fcntl(file.fileno(), locktype)
def unflock(file):
fcntl.fcntl(file.fileno(), fcntl.LOCK_UN)
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