forked from ungleich-public/cdist
77 lines
2.1 KiB
Python
77 lines
2.1 KiB
Python
# -*- coding: utf-8 -*-
|
|
#
|
|
# 2016-2017 Darko Poljak (darko.poljak at gmail.com)
|
|
#
|
|
# This file is part of cdist.
|
|
#
|
|
# cdist 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.
|
|
#
|
|
# cdist 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 cdist. If not, see <http://www.gnu.org/licenses/>.
|
|
#
|
|
#
|
|
|
|
import fileinput
|
|
|
|
|
|
def hostfile_process_line(line, strip_func=str.strip):
|
|
"""Return entry from read line or None if no entry present."""
|
|
if not line:
|
|
return None
|
|
# remove comment if present
|
|
comment_index = line.find('#')
|
|
if comment_index >= 0:
|
|
foo = line[:comment_index]
|
|
else:
|
|
foo = line
|
|
# remove leading and trailing whitespaces
|
|
foo = strip_func(foo)
|
|
# skip empty lines
|
|
if foo:
|
|
return foo
|
|
else:
|
|
return None
|
|
|
|
|
|
class HostSource:
|
|
"""
|
|
Host source object.
|
|
Source can be a sequence or filename (stdin if \'-\').
|
|
In case of filename each line represents one host.
|
|
"""
|
|
def __init__(self, source):
|
|
self.source = source
|
|
|
|
def _process_file_line(self, line):
|
|
return hostfile_process_line(line)
|
|
|
|
def _hosts_from_sequence(self):
|
|
for host in self.source:
|
|
yield host
|
|
|
|
def _hosts_from_file(self):
|
|
for line in fileinput.input(files=(self.source)):
|
|
host = self._process_file_line(line)
|
|
if host:
|
|
yield host
|
|
|
|
def hosts(self):
|
|
if not self.source:
|
|
return
|
|
|
|
if isinstance(self.source, str):
|
|
yield from self._hosts_from_file()
|
|
else:
|
|
yield from self._hosts_from_sequence()
|
|
|
|
def __call__(self):
|
|
yield from self.hosts()
|