summaryrefslogtreecommitdiff
path: root/ext/bg/js/translator.js
blob: bf347343e4917fc3bf2cbacdb5072550b13af8b2 (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
/*
 * 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) {
        const options = await apiOptionsGet();
        const titles = Object.keys(dictionaries);
        const {length, definitions} = await this.findTerms(text, dictionaries, alphanumeric);

        const definitionsGrouped = dictTermsGroup(definitions, dictionaries);
        for (const definition of definitionsGrouped) {
            await this.buildTermFrequencies(definition, titles);
        }

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

        return {length, definitions: definitionsGrouped};
    }

    async findTermsMerged(text, dictionaries, alphanumeric) {
        const options = await apiOptionsGet();
        const mainDictionary = Object.keys(options.dictionaries).filter(dict => options.dictionaries[dict].main).concat([''])[0];
        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, 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), mainDictionary);
            const definitionsByGloss = dictTermsMergeByGloss(result, rawDefinitionsBySequence);

            const secondarySearchResults = [];
            if (secondarySearchTitles.length) {
                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)) {
                            secondarySearchResults.push(definition);
                        }
                    }
                }
            }

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

            for (const gloss in definitionsByGloss) {
                const definition = definitionsByGloss[gloss];

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

                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 tags = await this.expandTags(result.expressions.get(expression).get(reading), result.dictionary);
                    expressions.push({
                        expression: expression,
                        reading: reading,
                        termTags: dictTagsSort(tags),
                        jmdictTermFrequency: (tags => {
                            if (tags.has('P')) {
                                return 'popular';
                            } else if (dictJmdictTermTagsRare(tags)) {
                                return 'rare';
                            } else {
                                return 'normal';
                            }
                        })(result.expressions.get(expression).get(reading))
                    });
                }
            }

            result.expressions = expressions;

            // result.expression = Array.from(result.expression).join(', ');
            // result.reading = Array.from(result.reading).join(', ');
            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);
        }

        for (const definition of definitionsMerged) {
            await this.buildTermFrequencies(definition, 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);

        for (const definition of definitions) {
            await this.buildTermFrequencies(definition, 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 cache = {};
        const titles = Object.keys(dictionaries);
        let deinflections = await this.findTermDeinflections(text, titles, cache);
        const textHiragana = jpKatakanaToHiragana(text);
        if (text !== textHiragana) {
            deinflections = deinflections.concat(await this.findTermDeinflections(textHiragana, titles, cache));
        }

        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, titles, cache) {
        const definer = async term => {
            if (cache.hasOwnProperty(term)) {
                return cache[term];
            } else {
                return cache[term] = await this.database.findTerms(term, titles);
            }
        };

        let deinflections = [];
        for (let i = text.length; i > 0; --i) {
            const textSlice = text.slice(0, i);
            deinflections = deinflections.concat(await this.deinflector.deinflect(textSlice, definer));
        }

        return deinflections;
    }

    async findKanji(text, dictionaries) {
        let definitions = [];
        const processed = {};
        const titles = Object.keys(dictionaries);
        for (const c of text) {
            if (!processed[c]) {
                definitions = definitions.concat(await this.database.findKanji(c, titles));
                processed[c] = true;
            }
        }

        for (const definition of definitions) {
            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.findKanjiMeta(definition.character, titles)) {
                if (meta.mode === 'freq') {
                    definition.frequencies.push({
                        character: meta.character,
                        frequency: meta.data,
                        dictionary: meta.dictionary
                    });
                }
            }
        }

        return definitions;
    }

    async buildTermFrequencies(definition, titles) {
        let terms = [];
        if (definition.expressions) {
            terms = terms.concat(definition.expressions);
        } else {
            terms.push(definition);
        }

        for (const term of terms) {
            term.frequencies = [];
            for (const meta of await this.database.findTermMeta(term.expression, titles)) {
                if (meta.mode === 'freq') {
                    term.frequencies.push({
                        expression: meta.expression,
                        frequency: meta.data,
                        dictionary: meta.dictionary
                    });
                }
            }
        }
    }

    async expandTags(names, title) {
        const tags = [];
        for (const name of names) {
            if (typeof name !== 'string') {
                continue;
            }
            const base = name.split(':')[0];
            const meta = await this.database.findTagForTitle(base, title);

            const tag = {name};
            for (const prop in meta || {}) {
                if (prop !== 'name') {
                    tag[prop] = meta[prop];
                }
            }

            tags.push(dictTagSanitize(tag));
        }

        return tags;
    }

    async expandStats(items, title) {
        const stats = {};
        for (const name in items) {
            const base = name.split(':')[0];
            const meta = await this.database.findTagForTitle(base, title);
            const group = stats[meta.category] = stats[meta.category] || [];

            const stat = {name, value: items[name]};
            for (const prop in meta || {}) {
                if (prop !== 'name') {
                    stat[prop] = meta[prop];
                }
            }

            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;
    }
}