94 lines
2.9 KiB
Python
94 lines
2.9 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright (C) 2011 Alex Yatskov
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#
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# This program 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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# This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
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import operator
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import re
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import sqlite3
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class Dictionary:
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def __init__(self, filename, index=True):
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self.db = sqlite3.connect(filename)
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self.indices = set()
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def findTerm(self, word, partial=False):
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cursor = self.db.cursor()
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if not self.hasIndex('TermIndex'):
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cursor.execute('CREATE INDEX TermIndex ON Terms(expression, reading)')
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self.db.commit()
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cursor.execute('SELECT * FROM Terms WHERE expression {0} ? OR reading=?'.format('LIKE' if partial else '='), (word, word))
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return cursor.fetchall()
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def findCharacter(self, character):
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cursor = self.db.cursor()
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cursor.execute('SELECT * FROM Kanji WHERE character=?', character)
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return cursor.fetchone()
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def findCharacterVisually(self, characters):
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radicals = dict()
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for character in characters:
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for radical in self.findRadicalsByCharacter(character):
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radicals[radical] = radicals.get(radical, 0) + 1
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results = dict()
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for radical, count in radicals.items():
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for character in self.findCharactersByRadical(radical):
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results[character] = results.get(character, 0) + count
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return sorted(results.items(), key=operator.itemgetter(1), reverse=True)
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def findRadicalsByCharacter(self, character):
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cursor = self.db.cursor()
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cursor.execute('SELECT radicals FROM Radicals WHERE character=?', character)
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columns = cursor.fetchone()
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if columns is None:
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return None
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return columns[0].split()
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def findCharactersByRadical(self, radical):
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cursor = self.db.cursor()
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cursor.execute('SELECT character FROM Radicals WHERE radicals LIKE ?', (u'%{0}%'.format(radical),))
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columns = cursor.fetchall()
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if columns is None:
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return None
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return map(operator.itemgetter(0), columns)
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def hasIndex(self, name):
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if name in self.indices:
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return True
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cursor = self.db.cursor()
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cursor.execute('SELECT * FROM sqlite_master WHERE name=?', (name,))
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if len(cursor.fetchall()) == 0:
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return False
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self.indices.update([name])
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return True
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