# -*- coding: utf8 -*-
# Dioptas - GUI program for fast processing of 2D X-ray data
#     Copyright (C) 2014  Clemens Prescher (clemens.prescher@gmail.com)
#     GSECARS, University of Chicago
#
#     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/>.
from __future__ import absolute_import

import sys
import os
import time

try:
    from cStringIO import StringIO
except ImportError:
    from io import StringIO
import traceback
from qtpy import QtWidgets


def excepthook(exc_type, exc_value, traceback_obj):
    """
    Global function to catch unhandled exceptions. This function will result in an error dialog which displays the
    error information.

    :param exc_type: exception type
    :param exc_value: exception value
    :param traceback_obj: traceback object
    :return:
    """

    separator = '-' * 80
    tb_info_file = StringIO()
    traceback.print_tb(traceback_obj, None, tb_info_file)
    traceback.print_exception(exc_type, exc_value, traceback_obj)
    tb_info_file.seek(0)
    tb_info = tb_info_file.read()
    errmsg = '%s: \n%s' % (str(exc_type), str(exc_value))
    sections = [separator, errmsg, separator, tb_info]
    msg = '\n'.join(sections)

    print(msg)


def main():
    sys.excepthook = excepthook