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SickRage/lib/subliminal/utils.py

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# -*- coding: utf-8 -*-
# Copyright 2011-2012 Antoine Bertin <diaoulael@gmail.com>
#
# This file is part of subliminal.
#
# subliminal is free software; you can redistribute it and/or modify it under
# the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# subliminal 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 Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with subliminal. If not, see <http://www.gnu.org/licenses/>.
import re
__all__ = ['get_keywords', 'split_keyword', 'to_unicode']
def get_keywords(guess):
"""Retrieve keywords from guessed informations
:param guess: guessed informations
:type guess: :class:`guessit.guess.Guess`
:return: lower case alphanumeric keywords
:rtype: set
"""
keywords = set()
for k in ['releaseGroup', 'screenSize', 'videoCodec', 'format']:
if k in guess:
keywords = keywords | split_keyword(guess[k].lower())
return keywords
def split_keyword(keyword):
"""Split a keyword in multiple ones on any non-alphanumeric character
:param string keyword: keyword
:return: keywords
:rtype: set
"""
split = set(re.findall(r'\w+', keyword))
return split
def to_unicode(data):
"""Convert a basestring to unicode
:param basestring data: data to decode
:return: data as unicode
:rtype: unicode
"""
if not isinstance(data, basestring):
raise ValueError('Basestring expected')
if isinstance(data, unicode):
return data
for encoding in ('utf-8', 'latin-1'):
try:
return unicode(data, encoding)
except UnicodeDecodeError:
pass
return unicode(data, 'utf-8', 'replace')