summaryrefslogtreecommitdiff
path: root/ext/bg/js/translator.js
blob: 61acaa7960adead0c66c864b973adc62ec56eab1 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
/*
 * Copyright (C) 2016  Alex Yatskov <alex@foosoft.net>
 * Author: Alex Yatskov <alex@foosoft.net>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */


class Translator {
    constructor() {
        this.database = null;
        this.deinflector = null;
    }

    async prepare() {
        if (!this.database) {
            this.database = new Database();
            await this.database.prepare();
        }

        if (!this.deinflector) {
            const url = chrome.extension.getURL('/bg/lang/deinflect.json');
            const reasons = await requestJson(url, 'GET');
            this.deinflector = new Deinflector(reasons);
        }
    }

    async findTermsGrouped(text, dictionaries, alphanumeric, options) {
        const titles = Object.keys(dictionaries);
        const {length, definitions} = await this.findTerms(text, dictionaries, alphanumeric);

        const definitionsGrouped = dictTermsGroup(definitions, dictionaries);
        await this.buildTermFrequencies(definitionsGrouped, titles);

        if (options.general.compactTags) {
            for (const definition of definitionsGrouped) {
                dictTermsCompressTags(definition.definitions);
            }
        }

        return {length, definitions: definitionsGrouped};
    }

    async findTermsMerged(text, dictionaries, alphanumeric, options) {
        const secondarySearchTitles = Object.keys(options.dictionaries).filter(dict => options.dictionaries[dict].allowSecondarySearches);
        const titles = Object.keys(dictionaries);
        const {length, definitions} = await this.findTerms(text, dictionaries, alphanumeric);

        const definitionsBySequence = dictTermsMergeBySequence(definitions, options.general.mainDictionary);

        const definitionsMerged = [];
        const mergedByTermIndices = new Set();
        for (const sequence in definitionsBySequence) {
            if (sequence < 0) {
                continue;
            }

            const result = definitionsBySequence[sequence];

            const rawDefinitionsBySequence = await this.database.findTermsBySequence(Number(sequence), options.general.mainDictionary);

            for (const definition of rawDefinitionsBySequence) {
                const definitionTags = await this.expandTags(definition.definitionTags, definition.dictionary);
                definitionTags.push(dictTagBuildSource(definition.dictionary));
                definition.definitionTags = definitionTags;
                const termTags = await this.expandTags(definition.termTags, definition.dictionary);
                definition.termTags = termTags;
            }

            const definitionsByGloss = dictTermsMergeByGloss(result, rawDefinitionsBySequence);

            const secondarySearchResults = [];
            if (secondarySearchTitles.length > 0) {
                for (const expression of result.expressions.keys()) {
                    if (expression === text) {
                        continue;
                    }

                    for (const reading of result.expressions.get(expression).keys()) {
                        for (const definition of await this.database.findTermsExact(expression, reading, secondarySearchTitles)) {
                            const definitionTags = await this.expandTags(definition.definitionTags, definition.dictionary);
                            definitionTags.push(dictTagBuildSource(definition.dictionary));
                            definition.definitionTags = definitionTags;
                            const termTags = await this.expandTags(definition.termTags, definition.dictionary);
                            definition.termTags = termTags;
                            secondarySearchResults.push(definition);
                        }
                    }
                }
            }

            dictTermsMergeByGloss(result, definitionsBySequence['-1'].concat(secondarySearchResults), definitionsByGloss, mergedByTermIndices);

            for (const gloss in definitionsByGloss) {
                const definition = definitionsByGloss[gloss];
                dictTagsSort(definition.definitionTags);
                result.definitions.push(definition);
            }

            dictTermsSort(result.definitions, dictionaries);

            const expressions = [];
            for (const expression of result.expressions.keys()) {
                for (const reading of result.expressions.get(expression).keys()) {
                    const termTags = result.expressions.get(expression).get(reading);
                    expressions.push({
                        expression: expression,
                        reading: reading,
                        termTags: dictTagsSort(termTags),
                        termFrequency: (score => {
                            if (score > 0) {
                                return 'popular';
                            } else if (score < 0) {
                                return 'rare';
                            } else {
                                return 'normal';
                            }
                        })(termTags.map(tag => tag.score).reduce((p, v) => p + v, 0))
                    });
                }
            }

            result.expressions = expressions;

            result.expression = Array.from(result.expression);
            result.reading = Array.from(result.reading);

            definitionsMerged.push(result);
        }

        const strayDefinitions = definitionsBySequence['-1'].filter((definition, index) => !mergedByTermIndices.has(index));
        for (const groupedDefinition of dictTermsGroup(strayDefinitions, dictionaries)) {
            groupedDefinition.expressions = [{expression: groupedDefinition.expression, reading: groupedDefinition.reading}];
            definitionsMerged.push(groupedDefinition);
        }

        await this.buildTermFrequencies(definitionsMerged, titles);

        if (options.general.compactTags) {
            for (const definition of definitionsMerged) {
                dictTermsCompressTags(definition.definitions);
            }
        }

        return {length, definitions: dictTermsSort(definitionsMerged)};
    }

    async findTermsSplit(text, dictionaries, alphanumeric) {
        const titles = Object.keys(dictionaries);
        const {length, definitions} = await this.findTerms(text, dictionaries, alphanumeric);

        await this.buildTermFrequencies(definitions, titles);

        return {length, definitions};
    }

    async findTerms(text, dictionaries, alphanumeric) {
        if (!alphanumeric && text.length > 0) {
            const c = text[0];
            if (!jpIsKana(c) && !jpIsKanji(c)) {
                return {length: 0, definitions: []};
            }
        }

        const textHiragana = jpKatakanaToHiragana(text);
        const titles = Object.keys(dictionaries);
        const deinflections = await this.findTermDeinflections(text, textHiragana, titles);

        let definitions = [];
        for (const deinflection of deinflections) {
            for (const definition of deinflection.definitions) {
                const definitionTags = await this.expandTags(definition.definitionTags, definition.dictionary);
                definitionTags.push(dictTagBuildSource(definition.dictionary));
                const termTags = await this.expandTags(definition.termTags, definition.dictionary);

                definitions.push({
                    source: deinflection.source,
                    reasons: deinflection.reasons,
                    score: definition.score,
                    id: definition.id,
                    dictionary: definition.dictionary,
                    expression: definition.expression,
                    reading: definition.reading,
                    glossary: definition.glossary,
                    definitionTags: dictTagsSort(definitionTags),
                    termTags: dictTagsSort(termTags),
                    sequence: definition.sequence
                });
            }
        }

        definitions = dictTermsUndupe(definitions);
        definitions = dictTermsSort(definitions, dictionaries);

        let length = 0;
        for (const definition of definitions) {
            length = Math.max(length, definition.source.length);
        }

        return {length, definitions};
    }

    async findTermDeinflections(text, text2, titles) {
        const deinflections = (text === text2 ? this.getDeinflections(text) : this.getDeinflections2(text, text2));

        if (deinflections.length === 0) {
            return [];
        }

        const uniqueDeinflectionTerms = [];
        const uniqueDeinflectionArrays = [];
        const uniqueDeinflectionsMap = {};
        for (const deinflection of deinflections) {
            const term = deinflection.term;
            let deinflectionArray;
            if (uniqueDeinflectionsMap.hasOwnProperty(term)) {
                deinflectionArray = uniqueDeinflectionsMap[term];
            } else {
                deinflectionArray = [];
                uniqueDeinflectionTerms.push(term);
                uniqueDeinflectionArrays.push(deinflectionArray);
                uniqueDeinflectionsMap[term] = deinflectionArray;
            }
            deinflectionArray.push(deinflection);
        }

        const definitions = await this.database.findTermsBulk(uniqueDeinflectionTerms, titles);

        for (const definition of definitions) {
            const definitionRules = Deinflector.rulesToRuleFlags(definition.rules);
            for (const deinflection of uniqueDeinflectionArrays[definition.index]) {
                const deinflectionRules = deinflection.rules;
                if (deinflectionRules === 0 || (definitionRules & deinflectionRules) !== 0) {
                    deinflection.definitions.push(definition);
                }
            }
        }

        return deinflections.filter(e => e.definitions.length > 0);
    }

    getDeinflections(text) {
        const deinflections = [];

        for (let i = text.length; i > 0; --i) {
            const textSlice = text.slice(0, i);
            deinflections.push(...this.deinflector.deinflect(textSlice));
        }

        return deinflections;
    }

    getDeinflections2(text, text2) {
        const deinflections = [];

        for (let i = text.length; i > 0; --i) {
            const textSlice = text.slice(0, i);
            const text2Slice = text2.slice(0, i);
            deinflections.push(...this.deinflector.deinflect(textSlice));
            if (textSlice !== text2Slice) {
                deinflections.push(...this.deinflector.deinflect(text2Slice));
            }
        }

        return deinflections;
    }

    async findKanji(text, dictionaries) {
        const titles = Object.keys(dictionaries);
        const kanjiUnique = {};
        const kanjiList = [];
        for (const c of text) {
            if (!kanjiUnique.hasOwnProperty(c)) {
                kanjiList.push(c);
                kanjiUnique[c] = true;
            }
        }

        const definitions = await this.database.findKanjiBulk(kanjiList, titles);
        if (definitions.length === 0) {
            return definitions;
        }

        if (definitions.length > 1) {
            definitions.sort((a, b) => a.index - b.index);
        }

        const kanjiList2 = [];
        for (const definition of definitions) {
            kanjiList2.push(definition.character);

            const tags = await this.expandTags(definition.tags, definition.dictionary);
            tags.push(dictTagBuildSource(definition.dictionary));

            definition.tags = dictTagsSort(tags);
            definition.stats = await this.expandStats(definition.stats, definition.dictionary);
            definition.frequencies = [];
        }

        for (const meta of await this.database.findKanjiMetaBulk(kanjiList2, titles)) {
            if (meta.mode !== 'freq') { continue; }
            definitions[meta.index].frequencies.push({
                character: meta.character,
                frequency: meta.data,
                dictionary: meta.dictionary
            });
        }

        return definitions;
    }

    async buildTermFrequencies(definitions, titles) {
        const terms = [];
        for (const definition of definitions) {
            if (definition.expressions) {
                terms.push(...definition.expressions);
            } else {
                terms.push(definition);
            }
        }

        if (terms.length === 0) {
            return;
        }

        // Create mapping of unique terms
        const expressionsUnique = [];
        const termsUnique = [];
        const termsUniqueMap = {};
        for (let i = 0, ii = terms.length; i < ii; ++i) {
            const term = terms[i];
            const expression = term.expression;
            term.frequencies = [];

            if (termsUniqueMap.hasOwnProperty(expression)) {
                termsUniqueMap[expression].push(term);
            } else {
                const termList = [term];
                expressionsUnique.push(expression);
                termsUnique.push(termList);
                termsUniqueMap[expression] = termList;
            }
        }

        const metas = await this.database.findTermMetaBulk(expressionsUnique, titles);
        for (const meta of metas) {
            if (meta.mode !== 'freq') {
                continue;
            }

            for (const term of termsUnique[meta.index]) {
                term.frequencies.push({
                    expression: meta.expression,
                    frequency: meta.data,
                    dictionary: meta.dictionary
                });
            }
        }
    }

    async expandTags(names, title) {
        const tags = [];
        for (const name of names) {
            const base = Translator.getNameBase(name);
            let meta = this.database.findTagForTitleCached(base, title);
            if (typeof meta === 'undefined') {
                meta = await this.database.findTagForTitle(base, title);
            }

            const tag = Object.assign({}, meta !== null ? meta : {}, {name});

            tags.push(dictTagSanitize(tag));
        }

        return tags;
    }

    async expandStats(items, title) {
        const stats = {};
        for (const name in items) {
            const base = Translator.getNameBase(name);
            let meta = this.database.findTagForTitleCached(base, title);
            if (typeof meta === 'undefined') {
                meta = await this.database.findTagForTitle(base, title);
                if (meta === null) {
                    continue;
                }
            }

            const group = stats[meta.category] = stats[meta.category] || [];

            const stat = Object.assign({}, meta, {name, value: items[name]});

            group.push(dictTagSanitize(stat));
        }

        for (const category in stats) {
            stats[category].sort((a, b) => {
                if (a.notes < b.notes) {
                    return -1;
                } else if (a.notes > b.notes) {
                    return 1;
                } else {
                    return 0;
                }
            });
        }

        return stats;
    }

    static getNameBase(name) {
        const pos = name.indexOf(':');
        return (pos >= 0 ? name.substr(0, pos) : name);
    }
}