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mecabUnidic.ts
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mecabUnidic.ts
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#!/usr/bin/env node
const spawn = require('child_process').spawn;
const assert = require('assert')
import{partitionBy, flatten} from 'curtiz-utils';
// https://gist.github.com/masayu-a/e3eee0637c07d4019ec9 "prepared by Irena Srdanovic, 17.1.2013, checked by Ogiso, Den
// and Maekawa"
const partOfSpeechKeys = [
"代名詞",
"pronoun",
"副詞",
"adverb",
"助動詞",
"auxiliary_verb",
"助詞",
"particle",
"係助詞",
"binding",
"副助詞",
"adverbial",
"接続助詞",
"conjunctive",
"格助詞",
"case",
"準体助詞",
"nominal",
"終助詞",
"phrase_final",
"動詞",
"verb",
"一般",
"general",
"非自立可能",
"bound",
"名詞",
"noun",
"助動詞語幹",
"auxiliary",
"固有名詞",
"proper",
"人名",
"name",
"名",
"firstname",
"姓",
"surname",
"地名",
"place",
"国",
"country",
"数詞",
"numeral",
"普通名詞",
"common",
"サ変可能",
"verbal_suru",
"サ変形状詞可能",
"verbal_adjectival",
"副詞可能",
"adverbial_suffix",
"助数詞可能",
"counter",
"形状詞可能",
"adjectival",
"形容詞",
"adjective_i",
"形状詞",
"adjectival_noun",
"タリ",
"tari",
"感動詞",
"interjection",
"フィラー",
"filler",
"接尾辞",
"suffix",
"動詞的",
"verbal",
"名詞的",
"nominal_suffix",
"助数詞",
"counter_suffix",
"形容詞的",
"adjective_i_suffix",
"形状詞的",
"adjectival_noun_suffix",
"接続詞",
"conjunction",
"接頭辞",
"prefix",
"空白",
"whitespace",
"補助記号",
"supplementary_symbol",
"AA",
"ascii_art",
"顔文字",
"emoticon",
"句点",
"period",
"括弧閉",
"bracket_open",
"括弧開",
"bracket_close",
"読点",
"comma",
"記号",
"symbol",
"文字",
"character",
"連体詞",
"adnominal",
"未知語",
"unknown_words",
"カタカナ文",
"katakana",
"漢文",
"chinese_writing",
"言いよどみ",
"hesitation",
"web誤脱",
"errors_omissions",
"方言",
"dialect",
"ローマ字文",
"latin_alphabet",
"新規未知語",
"new_unknown_words"
];
// https://gist.github.com/masayu-a/3e11168f9330e2d83a68 "prepared by Irena Srdanovic, 18.1.2013 and 22.1.2013"
const inflectionKeys = [
"ク語法", "ku_wording",
"仮定形", "conditional",
"一般", "general",
"融合", "integrated",
"命令形", "imperative",
"已然形", "realis",
"補助", "auxiliary_inflection",
"意志推量形", "volitional_tentative",
"未然形", "irrealis",
"サ", "sa",
"セ", "se",
"撥音便", "euphonic_change_n",
"終止形", "conclusive",
"ウ音便", "euphonic_change_u",
"促音便", "euphonic_change_t",
"語幹", "word_stem",
"連体形", "attributive",
"イ音便", "euphonic_change_i",
"省略", "abbreviation",
"連用形", "continuative",
"ト", "change_to",
"ニ", "change_ni",
"長音", "long_sound",
"*", "uninflected"
];
// https://gist.github.com/masayu-a/b3ce862336e47736e84f "prepared by Irena Srdanovic, 18.1.2013 and 22.1.2013"
const inflectionTypeKeys = [
"ユク", "yuku",
"ダ行", "da_column",
"ザ行変格", "zahen_verb_irregular",
"ダ", "da",
"タイ", "tai",
"文語ラ行変格", "classical_ra_column_change",
"ワ行", "wa_column",
"コス", "kosu",
"キ", "ki",
"文語下二段", "classical_shimonidan_verb_e_u_row",
"ス", "su",
"ハ行", "ha_column",
"上一段", "kamiichidan_verb_i_row",
"イク", "iku",
"マ行", "ma_column",
"助動詞", "auxiliary",
"シク", "shiku",
"ナ行", "na_column",
"ガ行", "ga_column",
"ム", "mu",
"ア行", "a_column",
"ザンス", "zansu",
"文語形容詞", "classical_adjective",
"タ", "ta",
"伝聞", "reported_speech",
"ナイ", "nai",
"ヘン", "hen",
"文語助動詞", "classical_auxiliary",
"ジ", "ji",
"ワア行", "wa_a_column",
"文語ナ行変格", "classical_na_column_change",
"カ行変格", "kahen_verb_irregular",
"ラシ", "rashi",
"マイ", "mai",
"タリ", "tari",
"呉レル", "kureru",
"形容詞", "adjective",
"ゲナ", "gena",
"一般+う", "general_u",
"ザマス", "zamasu",
"ゴトシ", "gotoshi",
"ヌ", "nu",
"文語上二段", "classical_kaminidan_verb_u_i_row",
"ク", "ku",
"サ行変格", "sahen_verb_irregular",
"ラ行", "ra_column",
"下一段", "shimoichidan_verb_e_row",
"完了", "final",
"ラシイ", "rashii",
"文語四段", "classical_yondan_verb",
"ドス", "dosu",
"ザ行", "za_column",
"ツ", "shi",
"ヤス", "yasu",
"バ行", "ba_column",
"断定", "assertive",
"ナンダ", "nanda",
"ケリ", "keri",
"文語サ行変格", "classical_sa_column_change",
"タ行", "ta_column",
"ケム", "kemu",
"カ行", "ka_column",
"ゲス", "gesu",
"ヤ行", "ya_column",
"マス", "masu",
"レル", "reru",
"サ行", "sa_column",
"文語下一段", "classical_shimoichidan_verb_e_row",
"ベシ", "beshi",
"アル", "aru",
"ヤ", "ya",
"五段", "godan_verb",
"一般", "general",
"デス", "desu",
"リ", "ri",
"ナリ", "nari",
"文語上一段", "classical_kamiichidan_verb_i_row",
"無変化型", "uninflected_form",
"ズ", "zu",
"ジャ", "ja",
"文語カ行変格", "classical_ka_column_change",
"イウ", "iu"
];
function keysToObj(keys: string[]) {
if (keys.length % 2 !== 0) { throw new Error("Even number of keys required"); }
let ret: any = {};
for (let i = 0; i < keys.length; i += 2) { ret[keys[i]] = keys[i + 1]; }
return ret;
}
const partOfSpeechObj = keysToObj(partOfSpeechKeys);
const inflectionObj = keysToObj(inflectionKeys);
const inflectionTypeObj = keysToObj(inflectionTypeKeys);
export function invokeMecab(text: string, numBest: number = 1): Promise<string> {
const native = !(process.env["NODE_MECAB"]);
const numBestArgs = numBest === 1 ? [] : ['-N', numBest.toString()];
return new Promise((resolve, reject) => {
let spawned;
if (native) {
spawned = spawn('mecab', ['-d', '/opt/homebrew/lib/mecab/dic/unidic'].concat(numBestArgs))
} else {
const args =
['mecab-emscripten-node', '-d', process.env["UNIDIC"] || '/opt/homebrew/lib/mecab/dic/unidic'].concat(
process.env["MECABRC"] ? ['-r', process.env["MECABRC"] || '/usr/local/etc/mecabrc'] : []);
args.push(...numBestArgs);
spawned = spawn('npx', args);
}
spawned.stdin.write(text);
spawned.stdin.write('\n'); // necessary, otherwise MeCab says `input-buffer overflow.`
spawned.stdin.end();
let arr: string[] = [];
spawned.stdout.on('data', (data: Buffer) => arr.push(data.toString('utf8')));
spawned.stderr.on('data', (data: Buffer) => {
console.log('stderr', data.toString());
reject(data);
});
spawned.on('close', (code: number) => {
if (code !== 0) { reject(code); }
resolve(arr.join(''));
});
});
}
export interface Morpheme {
literal: string;
pronunciation: string;
lemmaReading: string;
lemma: string;
partOfSpeech: string[];
inflectionType: string[]|null;
inflection: string[]|null;
}
export type MaybeMorpheme = Morpheme|null;
export function maybeMorphemesToMorphemes(v: MaybeMorpheme[]): Morpheme[] { return v.filter(o => !!o) as Morpheme[]; }
export function maybeMorphemeToMorpheme(o: MaybeMorpheme): Morpheme {
if (o) { return o; }
throw new Error('Invalid morpheme found');
}
export function morphemesEq(x: MaybeMorpheme, y: MaybeMorpheme): boolean {
return !!x && !!y && ultraCompressMorpheme(x) === ultraCompressMorpheme(y);
}
export function parseMorpheme(raw: string[]): MaybeMorpheme {
if (raw.length === 7) {
const [literal, pronunciation, lemmaReading, lemma, partOfSpeechRaw, inflectionTypeRaw, inflectionRaw] = raw;
const clean = (dashed: string, obj: any) => dashed === '' ? null : dashed.split('-').map(key => {
const res: string = obj[key];
if (!res) {
console.error('Unknown MeCab Unidic key encountered, key', key, 'dashed', dashed, 'raw', raw);
// throw new Error('Unknown MeCab Unidic key encountered');
return '';
}
return res;
});
const partOfSpeech = clean(partOfSpeechRaw, partOfSpeechObj);
if (!partOfSpeech) {
// this will never happen, but `clean` does potentially return null so let's check it.
throw new Error('Empty part of speech encountered');
}
// These two can potentially be null, for uninflected morphemes
const inflectionType = clean(inflectionTypeRaw, inflectionTypeObj);
const inflection = clean(inflectionRaw, inflectionObj);
return {literal, pronunciation, lemmaReading, lemma, partOfSpeech, inflectionType, inflection};
} else if (raw.length === 1) {
return null;
}
console.error('Neither 1 nor 7', raw);
return null;
// throw new Error('Unexpected number of columns in MeCab Unidic output');
}
/**
* Outermost nesting: sentence of input
* Middle nesting: 1 thru nBest
* Innermost nesting: morphemes of sentence
*
* I.e., `output[numSentence][numParsing][numMorpheme]`.
*
* If `nBest=1`, `output[0][1]` will not exist.
*/
export function parseMecab(rawMecab: string, nBest: number = 1) {
const sections = rawMecab.split('\nEOS').filter(s => !!s.trim());
assert(sections.length % nBest === 0)
const parsings = sections.map(parseMecabSection);
const parsingsPerSection = partitionBy(parsings, (_, i) => !(i! % nBest));
const rawPerSection = partitionBy(sections, (_, i) => !(i! % nBest));
return {morphemes: parsingsPerSection, raws: rawPerSection};
}
function isMorpheme(x: MaybeMorpheme): x is Morpheme { return !!x; }
function parseMecabSection(result: string): Morpheme[] {
return result.split('\n').map(line => parseMorpheme(line.split('\t'))).filter(isMorpheme);
}
const MORPHEMESEP = '\t';
const BUNSETSUSEP = '::';
const ELEMENTSEP = '-';
export function ultraCompressMorpheme(m: MaybeMorpheme): string {
return m ? [m.literal, m.pronunciation, m.lemmaReading, m.lemma, m.partOfSpeech.join(ELEMENTSEP),
(m.inflectionType || []).join(ELEMENTSEP), (m.inflection || []).join(ELEMENTSEP)].join(MORPHEMESEP) : '';
}
export function ultraCompressMorphemes(ms: MaybeMorpheme[]): string {
return ms.map(ultraCompressMorpheme).join(BUNSETSUSEP);
}
export function decompressMorpheme(s: string): MaybeMorpheme {
const split = (s: string) => s.split(ELEMENTSEP);
const nullable = (v: any[]) => v.length ? v : null;
if (s === '') { return null; }
let [literal, pronunciation, lemmaReading, lemma, partOfSpeech, inflectionType, inflection] = s.split(MORPHEMESEP);
return {
literal,
pronunciation,
lemmaReading,
lemma,
partOfSpeech: split(partOfSpeech),
inflectionType: nullable(split(inflectionType || '')),
inflection: nullable(split(inflection || ''))
};
}
export function decompressMorphemes(s: string): MaybeMorpheme[] { return s.split(BUNSETSUSEP).map(decompressMorpheme); }
export function goodMorphemePredicate(m: Morpheme): boolean {
return !(m.partOfSpeech[0] === 'supplementary_symbol') &&
!(m.partOfSpeech[0] === 'particle' && m.partOfSpeech[1] === 'phrase_final');
}
if (require.main === module) {
const readFile = require('fs').readFile;
const promisify = require('util').promisify;
const getStdin = require('get-stdin');
const eaw: {length: (s: string) => number} = require('eastasianwidth');
function formatRow(row: string[], width: number[]) {
return `| ${width.map((n, i) => (row[i] || '') + ' '.repeat(n - eaw.length(row[i] || ''))).join(' | ')} |`;
}
function printMarkdownTable(table: string[][], header: string[] = []) {
if (header.length && header.length !== table[0].length) {
throw new Error('table and header have different lengths');
}
const cellLengths =
table.concat([header]).filter(v => v.length).map(row => {return row.map(cell => eaw.length(cell))});
let widths = Array.from(table[0], () => 0);
for (const l of cellLengths) { widths = widths.map((curr, i) => Math.max(curr, l[i])); }
if (header.length) {
console.log(formatRow(header, widths));
console.log(formatRow(header.map((h, i) => '-'.repeat(widths[i])), widths))
}
for (const row of table) { console.log(formatRow(row, widths)); }
}
(async function() {
let text = '今日は 良い天気だ。\n\nたのしいですか。\n\n何できた?';
if (process.argv.length <= 2) {
// no arguments, read from stdin. If stdin is empty, use default.
text = (await getStdin()) || text;
} else {
text = (await Promise.all(process.argv.slice(2).map(f => promisify(readFile)(f, 'utf8'))))
.join('\n')
.replace(/\r/g, '');
}
let nBest = 1;
if (process.env['MECAB_NBEST']) {
const candidate = Number(process.env['MECAB_NBEST']);
if (candidate && isFinite(candidate) && candidate > 0) { nBest = candidate }
}
// Output
const parseds = parseMecab(await invokeMecab(text.trim(), nBest), nBest);
for (const sentence of parseds.morphemes) {
for (const [n, parsed] of sentence.entries()) {
console.log(`\n# ${n + 1} parsing`)
const table = parsed.map(m => {
return m ? [m.literal, m.pronunciation, m.lemmaReading, m.lemma, m.partOfSpeech.join(ELEMENTSEP),
(m.inflectionType || []).join(ELEMENTSEP), (m.inflection || []).join(ELEMENTSEP)] : [];
})
printMarkdownTable(table, 'Literal,Pron.,Lemma Read.,Lemma,PoS,Infl. Type,Infl.'.split(','));
}
}
// DELETED WASM CHECK (mecab-emscripten-node)
})();
}