wtetsu/mouse-dictionary

/**
 * Mouse Dictionary (https://github.com/wtetsu/mouse-dictionary/)
 * Copyright 2018-present wtetsu
 * Licensed under MIT
 */

import UniqList from "uniqlist";
import rule from "../rule";

const RE_UNNECESSARY_CHARACTERS = new RegExp(String.fromCharCode(0x200c), "g");
const RE_ALPHABETS_NUMBERS = /[A-Za-z0-9]/g;

const createLookupWordsJa = (sourceStr) => {
  const str = sourceStr
    .substring(0, 40)
    .replace(RE_UNNECESSARY_CHARACTERS, "")
    .replace(RE_ALPHABETS_NUMBERS, (s) => String.fromCharCode(s.charCodeAt(0) + 0xfee0));

  const result = new UniqList();

  for (let i = str.length; i >= 1; i--) {
    const part = str.substring(0, i);
    result.push(part);

    if (i >= 2) {
      const deinedWords = rule.doJa(part);
      result.merge(deinedWords);
    }
  }
  return result.toArray();
};

export default createLookupWordsJa;