"""
_compat module (imdb package).

This module provides compatibility functions used by the imdb package
to deal with unusual environments.

Copyright 2008-2010 Davide Alberani <da@erlug.linux.it>

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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
"""

# TODO: now we're heavily using the 'logging' module, which was not
#       present in Python 2.2.  To work in a Symbian environment, we
#       need to create a fake 'logging' module (its functions may call
#       the 'warnings' module, or do nothing at all).


import os
# If true, we're working on a Symbian device.
if os.name == 'e32':
    # Replace os.path.expandvars and os.path.expanduser, if needed.
    def _noact(x):
        """Ad-hoc replacement for IMDbPY."""
        return x
    try:
        os.path.expandvars
    except AttributeError:
        os.path.expandvars = _noact
    try:
        os.path.expanduser
    except AttributeError:
        os.path.expanduser = _noact

    # time.strptime is missing, on Symbian devices.
    import time
    try:
        time.strptime
    except AttributeError:
        import re
        _re_web_time = re.compile(r'Episode dated (\d+) (\w+) (\d+)')
        _re_ptdf_time = re.compile(r'\((\d+)-(\d+)-(\d+)\)')
        _month2digit = {'January': '1', 'February': '2', 'March': '3',
                'April': '4', 'May': '5', 'June': '6', 'July': '7',
                'August': '8', 'September': '9', 'October': '10',
                'November': '11', 'December': '12'}
        def strptime(s, format):
            """Ad-hoc strptime replacement for IMDbPY."""
            try:
                if format.startswith('Episode'):
                    res = _re_web_time.findall(s)[0]
                    return (int(res[2]), int(_month2digit[res[1]]), int(res[0]),
                            0, 0, 0, 0, 1, 0)
                else:
                    res = _re_ptdf_time.findall(s)[0]
                    return (int(res[0]), int(res[1]), int(res[2]),
                            0, 0, 0, 0, 1, 0)
            except:
                raise ValueError('error in IMDbPY\'s ad-hoc strptime!')
        time.strptime = strptime