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# -*- coding: utf-8 -*-
# config.py
# Copyright (C) 2017 LEAP
#
# 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/>.
"""
Configuration parser/writter
"""
import ConfigParser
import os
from leap.common import files
from leap.common.config import get_path_prefix
DEFAULT_BASEDIR = os.path.join(get_path_prefix(), 'leap')
class MissingConfigEntry(Exception):
"""
A required config entry was not found.
"""
class Configuration(object):
def __init__(self, config_file, basedir=DEFAULT_BASEDIR,
default_config=""):
path = os.path.abspath(os.path.expanduser(basedir))
if not os.path.isdir(path):
files.mkdir_p(path)
self.config_path = os.path.join(path, config_file)
self.default_config = default_config
self.read()
def get(self, section, option, default=None, boolean=False):
try:
if boolean:
return self.config.getboolean(section, option)
item = self.config.get(section, option)
return item
except (ConfigParser.NoOptionError, ConfigParser.NoSectionError):
if default is None:
raise MissingConfigEntry("%s is missing the [%s]%s entry"
% (self.config_path, section, option))
return default
def set(self, section, option, value):
if not self.config.has_section(section):
self.config.add_section(section)
self.config.set(section, option, value)
self.save()
self.read()
assert self.config.get(section, option) == value
def get_section(self, section):
return _ConfigurationSection(self, section)
def read(self):
self.config = ConfigParser.SafeConfigParser()
if not os.path.isfile(self.config_path):
self._create_default_config()
with open(self.config_path, "rb") as f:
self.config.readfp(f)
def save(self):
with open(self.config_path, 'wb') as f:
self.config.write(f)
def _create_default_config(self):
with open(self.config_path, 'w') as outf:
outf.write(self.default_config)
class _ConfigurationSection(object):
def __init__(self, config, section):
self.config = config
self.section = section
def get(self, option, default=None, boolean=False):
return self.config.get(self.section, option, default, boolean)
def set(self, option, value):
if isinstance(value, bool):
value = str(value)
return self.config.set(self.section, option, value)
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