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# -*- coding: utf-8 -*- |
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# Copyright 2014-2018 by Christopher C. Little. |
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# This file is part of Abydos. |
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# |
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# Abydos is free software: you can redistribute it and/or modify |
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# it under the terms of the 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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# Abydos 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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# GNU General Public License for more details. |
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# |
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# You should have received a copy of the GNU General Public License |
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# along with Abydos. If not, see <http://www.gnu.org/licenses/>. |
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"""abydos.phonetic._norphone. |
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Norphone |
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""" |
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from __future__ import ( |
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absolute_import, |
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division, |
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print_function, |
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unicode_literals, |
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) |
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from ._phonetic import _Phonetic |
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__all__ = ['Norphone', 'norphone'] |
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class Norphone(_Phonetic): |
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"""Norphone. |
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The reference implementation by Lars Marius Garshol is available in |
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:cite:`Garshol:2015`. |
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Norphone was designed for Norwegian, but this implementation has been |
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extended to support Swedish vowels as well. This function incorporates |
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the "not implemented" rules from the above file's rule set. |
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""" |
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_uc_v_set = {'A', 'E', 'I', 'O', 'U', 'Y', 'Å', 'Æ', 'Ø', 'Ä', 'Ö'} |
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_replacements = { |
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4: {'SKEI': 'X'}, |
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3: {'SKJ': 'X', 'KEI': 'X'}, |
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2: { |
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'CH': 'K', |
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'CK': 'K', |
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'GJ': 'J', |
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'GH': 'K', |
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'HG': 'K', |
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'HJ': 'J', |
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'HL': 'L', |
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'HR': 'R', |
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'KJ': 'X', |
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'KI': 'X', |
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'LD': 'L', |
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'ND': 'N', |
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'PH': 'F', |
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'TH': 'T', |
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'SJ': 'X', |
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}, |
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1: {'W': 'V', 'X': 'KS', 'Z': 'S', 'D': 'T', 'G': 'K'}, |
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} |
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def encode(self, word): |
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"""Return the Norphone code. |
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Parameters |
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---------- |
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word : str |
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The word to transform |
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Returns |
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------- |
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str |
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The Norphone code |
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Examples |
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-------- |
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>>> pe = Norphone() |
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>>> pe.encode('Hansen') |
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'HNSN' |
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>>> pe.encode('Larsen') |
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'LRSN' |
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>>> pe.encode('Aagaard') |
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'ÅKRT' |
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>>> pe.encode('Braaten') |
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'BRTN' |
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>>> pe.encode('Sandvik') |
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'SNVK' |
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""" |
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word = word.upper() |
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code = '' |
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skip = 0 |
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if word[0:2] == 'AA': |
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code = 'Å' |
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skip = 2 |
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elif word[0:2] == 'GI': |
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code = 'J' |
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skip = 2 |
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elif word[0:3] == 'SKY': |
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code = 'X' |
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skip = 3 |
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elif word[0:2] == 'EI': |
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code = 'Æ' |
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skip = 2 |
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elif word[0:2] == 'KY': |
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code = 'X' |
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skip = 2 |
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elif word[:1] == 'C': |
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code = 'K' |
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skip = 1 |
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elif word[:1] == 'Ä': |
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code = 'Æ' |
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skip = 1 |
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elif word[:1] == 'Ö': |
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code = 'Ø' |
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skip = 1 |
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if word[-2:] == 'DT': |
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word = word[:-2] + 'T' |
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# Though the rules indicate this rule applies in all positions, the |
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# reference implementation indicates it applies only in final position. |
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elif word[-2:-1] in self._uc_v_set and word[-1:] == 'D': |
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word = word[:-2] |
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for pos, char in enumerate(word): |
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if skip: |
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skip -= 1 |
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else: |
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for length in sorted(self._replacements, reverse=True): |
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if word[pos : pos + length] in self._replacements[length]: |
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code += self._replacements[length][ |
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word[pos : pos + length] |
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] |
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skip = length - 1 |
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break |
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else: |
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if not pos or char not in self._uc_v_set: |
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code += char |
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code = self._delete_consecutive_repeats(code) |
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return code |
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def norphone(word): |
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"""Return the Norphone code. |
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This is a wrapper for :py:meth:`Norphone.encode`. |
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Parameters |
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---------- |
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word : str |
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The word to transform |
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Returns |
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------- |
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str |
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The Norphone code |
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Examples |
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-------- |
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>>> norphone('Hansen') |
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'HNSN' |
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>>> norphone('Larsen') |
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'LRSN' |
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>>> norphone('Aagaard') |
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'ÅKRT' |
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>>> norphone('Braaten') |
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'BRTN' |
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>>> norphone('Sandvik') |
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'SNVK' |
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""" |
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return Norphone().encode(word) |
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if __name__ == '__main__': |
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import doctest |
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doctest.testmod() |
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chrislit /
abydos
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