71 lines
2.7 KiB
Python
71 lines
2.7 KiB
Python
#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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#
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# GuessIt - A library for guessing information from filenames
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# Copyright (c) 2013 Nicolas Wack <wackou@gmail.com>
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#
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# GuessIt is free software; you can redistribute it and/or modify it under
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# the terms of the Lesser GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# GuessIt is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# Lesser GNU General Public License for more details.
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#
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# You should have received a copy of the Lesser GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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from __future__ import absolute_import, division, print_function, unicode_literals
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from functools import reduce
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from guessit.plugins.transformers import Transformer
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from guessit.textutils import find_first_level_groups
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from guessit.patterns import group_delimiters
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class SplitExplicitGroups(Transformer):
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def __init__(self):
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Transformer.__init__(self, 250)
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def process(self, mtree, options=None):
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"""split each of those into explicit groups (separated by parentheses or square brackets)
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:return: return the string split into explicit groups, that is, those either
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between parenthese, square brackets or curly braces, and those separated
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by a dash."""
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for c in mtree.unidentified_leaves():
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groups = find_first_level_groups(c.value, group_delimiters[0])
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for delimiters in group_delimiters:
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flatten = lambda l, x: l + find_first_level_groups(x, delimiters)
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groups = reduce(flatten, groups, [])
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# do not do this at this moment, it is not strong enough and can break other
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# patterns, such as dates, etc...
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# groups = functools.reduce(lambda l, x: l + x.split('-'), groups, [])
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c.split_on_components(groups, category='explicit')
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def post_process(self, mtree, options=None):
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"""
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Decrease confidence for properties found in explicit groups.
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:param mtree:
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:param options:
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:return:
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"""
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if not options.get('name_only'):
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explicit_nodes = [node for node in mtree.nodes() if node.category == 'explicit' and node.is_explicit()]
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for explicit_node in explicit_nodes:
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self.alter_confidence(explicit_node, 0.5)
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def alter_confidence(self, node, factor):
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for guess in node.guesses:
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for k in guess.keys():
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confidence = guess.confidence(k)
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guess.set_confidence(k, confidence * factor)
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