Added GuessIt library and required libs for it.

We now perform a guessit on the nzbName to extract movie title and year instead of a regex, this is more accurate.

lib/guessit/transfo/split_explicit_groups.py

@@ -0,0 +1,49 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+#
+# GuessIt - A library for guessing information from filenames
+# Copyright (c) 2013 Nicolas Wack <wackou@gmail.com>
+#
+# GuessIt is free software; you can redistribute it and/or modify it under
+# the terms of the Lesser GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# GuessIt 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
+# Lesser GNU General Public License for more details.
+#
+# You should have received a copy of the Lesser GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+from __future__ import absolute_import, division, print_function, unicode_literals
+
+from guessit.plugins.transformers import Transformer
+from guessit.textutils import find_first_level_groups
+from guessit.patterns import group_delimiters
+from functools import reduce
+
+
+class SplitExplicitGroups(Transformer):
+    def __init__(self):
+        Transformer.__init__(self, 245)
+
+    def process(self, mtree, options=None):
+        """split each of those into explicit groups (separated by parentheses or square brackets)
+
+        :return: return the string split into explicit groups, that is, those either
+        between parenthese, square brackets or curly braces, and those separated
+        by a dash."""
+        for c in mtree.children:
+            groups = find_first_level_groups(c.value, group_delimiters[0])
+            for delimiters in group_delimiters:
+                flatten = lambda l, x: l + find_first_level_groups(x, delimiters)
+                groups = reduce(flatten, groups, [])
+
+            # do not do this at this moment, it is not strong enough and can break other
+            # patterns, such as dates, etc...
+            # groups = functools.reduce(lambda l, x: l + x.split('-'), groups, [])
+
+            c.split_on_components(groups)