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# -*- coding:utf-8 -*-
'''@package settings.py
Recover settings from a standard ini/conf file
Author: Robert Oliveira <olivecoder@gmail.com>
'''
from future import standard_library
standard_library.install_aliases()
from builtins import object
###########################################################################
#
# 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 configparser
import tempfile
import os
import shutil
class Settings(object):
'''Base class to read and write ini files
define FNAME in child class
'''
FNAME = None
def __init__(self):
self.changed = False
self.file_name = self.FNAME
self.mtime = 0
self.config = None
self.read()
def read(self):
self.config = configparser.ConfigParser()
self.config.read(self.file_name)
def updateFromFile(self):
current_mtime = os.path.getmtime(self.file_name)
if current_mtime > self.mtime:
self.read()
self.mtime = current_mtime
return True
else:
return False
def set(self, section, option, value):
self.changed = True
self.config.set(section, option, value)
def get(self, section, option):
return self.config.get(section, option)
def items(self, section):
return self.config.items(section)
def sections(self):
return self.config.sections()
def write(self):
'''atomic writing'''
tmp_file, tmp_fname = tempfile.mkstemp()
os.close(tmp_file)
shutil.copystat(self.file_name, tmp_fname)
self.config.write(open(tmp_fname, 'w'))
shutil.move(tmp_fname, self.file_name)
def __enter__(self):
return this
def __exit__(self, *args):
if self.changed:
self.save()
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