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# IVLE - Informatics Virtual Learning Environment
# Copyright (C) 2007-2009 The University of Melbourne
#
# 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 2 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, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
# Author: Matt Giuca, Will Grant
"""
Provides programmatic access to the IVLE configuration file.
"""
import os
from configobj import ConfigObj
__all__ = ["ConfigError", "Config"]
class ConfigError(Exception):
"""
An error reading or writing the configuration file.
"""
pass
def search_conffile():
"""
Search for the config file, and return it as a filename.
1. Environment var IVLECONF (full filename).
2. ./etc/ivle.conf
3. /etc/ivle/ivle.conf
Raises a ConfigError on error.
"""
if 'IVLECONF' in os.environ:
fname = os.environ['IVLECONF']
if os.path.exists(fname):
return fname
if os.path.exists('./etc/ivle.conf'):
return './etc/ivle.conf'
if os.path.exists('/etc/ivle/ivle.conf'):
return '/etc/ivle/ivle.conf'
raise ConfigError("Could not find IVLE config file")
class Config(ConfigObj):
"""
The configuration object. Can be instantiated with no arguments (will
implicitly find the ivle.conf file and load it).
"""
def __init__(self, *args, **kwargs):
conffile = search_conffile()
super(Config, self).__init__(infile=conffile, *args, **kwargs)
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