ipa-jfk/db.js

IPA narrow transcription of English words in New York City accent

/* Copyright (C) 2020-2021 b1f6c1c4
 *
 * This file is part of IPA-JFK.
 *
 * IPA-JFK is free software: you can redistribute it and/or modify it under the
 * terms of the GNU Affero General Public License as published by the Free
 * Software Foundation, version 3.
 *
 * IPA-JFK 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 Affero General Public License for
 * more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with IPA-JFK.  If not, see <https://www.gnu.org/licenses/>.
 */

import escapeStringRegexp from 'escape-string-regexp';
import core from './src/index.js';

let dictF;
let dict;

export function cache() {
  if (!dictF) throw new Error('No database loaded.');
  dict = {};
  dictF.split('\n').forEach((l) => {
    try {
      if (!l || l.startsWith(';;;')) return;
      const [w0, phst] = l.split('  ');
      const [, w, id] = w0.match(/^(.+?)(?:\(([0-9]+)\))?$/);
      if (!dict[w]) dict[w] = [];
      dict[w][id && +id || 0] = phst;
    } catch (e) {
      console.error('Error on line', l);
      throw e;
    }
  });
}

const norm = (w) => w.trim().toUpperCase().replace(/ /g, '-');

export function query(word) {
  const w = norm(word);
  if (dict) return dict[w];
  if (!dictF) throw new Error('No database loaded.');
  const regex = new RegExp(
    `\\b${escapeStringRegexp(w.toUpperCase())}(?:\\([0-9]+\\))?  ([A-Z0-9 ]+)\\b`,
    'g',
  );
  const res = [];
  for (let m of dictF.matchAll(regex)) {
    res.push(m[1]);
  }
  return res;
}

export const load = (file) => { dictF = file.replace(/_/g, '-'); };
export const process = (ph, word, phonemic, hints) => core(ph.trim(), norm(word), phonemic, hints);
export { display } from './src/index.js';