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72 lines
2.2 KiB
Python
72 lines
2.2 KiB
Python
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#!/usr/bin/env python2
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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 unicode_literals
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from guessit.transfo import SingleNodeGuesser
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from guessit.patterns import find_properties
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import re
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import logging
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log = logging.getLogger(__name__)
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def guess_properties(string):
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try:
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prop, value, pos, end = find_properties(string)[0]
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return { prop: value }, (pos, end)
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except IndexError:
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return None, None
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_idnum = re.compile(r'(?P<idNumber>[a-zA-Z0-9-]{10,})') # 1.0, (0, 0))
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def guess_idnumber(string):
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match = _idnum.search(string)
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if match is not None:
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result = match.groupdict()
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switch_count = 0
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DIGIT = 0
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LETTER = 1
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OTHER = 2
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last = LETTER
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for c in result['idNumber']:
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if c in '0123456789':
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ci = DIGIT
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elif c in 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ':
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ci = LETTER
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else:
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ci = OTHER
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if ci != last:
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switch_count += 1
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last = ci
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switch_ratio = float(switch_count) / len(result['idNumber'])
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# only return the result as probable if we alternate often between
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# char type (more likely for hash values than for common words)
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if switch_ratio > 0.4:
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return result, match.span()
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return None, None
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def process(mtree):
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SingleNodeGuesser(guess_idnumber, 0.4, log).process(mtree)
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