#!/usr/bin/python3
# -*- coding: utf-8 -*-

# ##### BEGIN LICENSE BLOCK #####
# Version: MPL 1.1/GPL 2.0/LGPL 2.1
#
# The contents of this file are subject to the Mozilla Public License Version
# 1.1 (the "License"); you may not use this file except in compliance with
# the License. You may obtain a copy of the License at
# http://www.mozilla.org/MPL/
#
# Software distributed under the License is distributed on an "AS IS" basis,
# WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
# for the specific language governing rights and limitations under the
# License.
#
# The Original Code is Mozilla Universal charset detector code.
#
# The Initial Developer of the Original Code is
# Netscape Communications Corporation.
# Portions created by the Initial Developer are Copyright (C) 2001
# the Initial Developer. All Rights Reserved.
#
# Contributor(s):
#          Jehan <jehan@girinstud.io>
#
# Alternatively, the contents of this file may be used under the terms of
# either the GNU General Public License Version 2 or later (the "GPL"), or
# the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
# in which case the provisions of the GPL or the LGPL are applicable instead
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# decision by deleting the provisions above and replace them with the notice
# and other provisions required by the GPL or the LGPL. If you do not delete
# the provisions above, a recipient may use your version of this file under
# the terms of any one of the MPL, the GPL or the LGPL.
#
# ##### END LICENSE BLOCK #####

import importlib
import sys
import os

def load(charset_names):
    '''
    Load a list of charsets.

    This function will return a dictionary of charsets from our
    charset database.

    :param charset_names: a list of supported charset names.
    :return: a dictionary with all the loaded charsets.
    :rtype: dict
    '''
    charsets = {}

    # Temporarily change the search path for modules.
    sys_path_backup = sys.path
    current_dir = os.path.dirname(os.path.realpath(__file__))
    sys.path = [current_dir + '/../charsets']

    for name in charset_names:
        try:
            charset = importlib.import_module(name.lower())
        except ImportError:
            print('Unknown charset "{}": '
                  'file "charsets/{}.py" does not exist.'.format(name, name.lower()))
            exit(1)
        charsets[charset.name] = charset
    # Set back the default module paths.
    sys.path = sys_path_backup
    return charsets
