# -*- Mode: Python; coding: utf-8; indent-tabs-mode: nil; tab-width: 4 -*-
### BEGIN LICENSE
# Copyright (c) 2012, Peter Levi <peterlevi@peterlevi.com>
# This program is free software: you can redistribute it and/or modify it 
# under the terms of the GNU General Public License version 3, as published 
# by the Free Software Foundation.
# 
# This program is distributed in the hope that it will be useful, but 
# WITHOUT ANY WARRANTY; without even the implied warranties of 
# MERCHANTABILITY, SATISFACTORY QUALITY, 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/>.
### END LICENSE

# THIS IS Variety CONFIGURATION FILE
# YOU CAN PUT THERE SOME GLOBAL VALUE
# Do not touch unless you know what you're doing.
# you're warned :)

__all__ = [
    'project_path_not_found',
    'get_data_file',
    'get_data_path',
    ]

# Where your project will look for your data (for instance, images and ui
# files). By default, this is ../data, relative your trunk layout
__variety_data_directory__ = '/usr/share/variety/'
__license__ = 'GPL-3'
__version__ = '0.6.6'

import os

class project_path_not_found(Exception):
    """Raised when we can't find the project directory."""


def get_data_file(*path_segments):
    """Get the full path to a data file.

    Returns the path to a file underneath the data directory (as defined by
    `get_data_path`). Equivalent to os.path.join(get_data_path(),
    *path_segments).
    """
    return os.path.join(get_data_path(), *path_segments)


def get_data_path():
    """Retrieve variety data path

    This path is by default <variety_lib_path>/../data/ in trunk
    and /usr/share/variety in an installed version but this path
    is specified at installation time.
    """

    # Get pathname absolute or relative.
    path = os.path.join(
        os.path.dirname(__file__), __variety_data_directory__)

    abs_data_path = os.path.abspath(path)
    if not os.path.exists(abs_data_path):
        raise project_path_not_found

    return abs_data_path


def get_version():
    return __version__
