replaceDakuten.js

replaceDakuten.js

import _ from 'lodash';

export const DAKUTEN_CODE = 12441; //     \u3099
export const HAN_DAKUTEN_CODE = 12442; // \u309a

/**
 * In Japanese, find the dot or dot string and convert it to the correct full-width string.
 * 
 * ぁ: 12353, あ: 12354, ぃ: 12355, い: 12356, ぅ: 12357, う: 12358, ぇ: 12359
 * え: 12360, ぉ: 12361, お: 12362, か: 12363, が: 12364, き: 12365, ぎ: 12366
 * く: 12367, ぐ: 12368, け: 12369, げ: 12370, こ: 12371, ご: 12372, さ: 12373
 * ざ: 12374, し: 12375, じ: 12376, す: 12377, ず: 12378, せ: 12379, ぜ: 12380
 * そ: 12381, ぞ: 12382, た: 12383, だ: 12384, ち: 12385, ぢ: 12386, っ: 12387
 * つ: 12388, づ: 12389, て: 12390, で: 12391, と: 12392, ど: 12393, な: 12394
 * に: 12395, ぬ: 12396, ね: 12397, の: 12398, は: 12399, ば: 12400, ぱ: 12401
 * ひ: 12402, び: 12403, ぴ: 12404, ふ: 12405, ぶ: 12406, ぷ: 12407, へ: 12408
 * べ: 12409, ぺ: 12410, ほ: 12411, ぼ: 12412, ぽ: 12413, ま: 12414, み: 12415
 * む: 12416, め: 12417, も: 12418, ゃ: 12419, や: 12420, ゅ: 12421, ゆ: 12422
 * ょ: 12423, よ: 12424, ら: 12425, り: 12426, る: 12427, れ: 12428, ろ: 12429
 * ゎ: 12430, わ: 12431, ゐ: 12432, ゑ: 12433, を: 12434, ん: 12435, ゔ: 12436
 *
 * ァ: 12449, ア: 12450, ィ: 12451, イ: 12452, ゥ: 12453, ウ: 12454, ェ: 12455
 * エ: 12456, ォ: 12457, オ: 12458, カ: 12459, ガ: 12460, キ: 12461, ギ: 12462
 * ク: 12463, グ: 12464, ケ: 12465, ゲ: 12466, コ: 12467, ゴ: 12468, サ: 12469
 * ザ: 12470, シ: 12471, ジ: 12472, ス: 12473, ズ: 12474, セ: 12475, ゼ: 12476
 * ソ: 12477, ゾ: 12478, タ: 12479, ダ: 12480, チ: 12481, ヂ: 12482, ッ: 12483
 * ツ: 12484, ヅ: 12485, テ: 12486, デ: 12487, ト: 12488, ド: 12489, ナ: 12490
 * ニ: 12491, ヌ: 12492, ネ: 12493, ノ: 12494, ハ: 12495, バ: 12496, パ: 12497
 * ヒ: 12498, ビ: 12499, ピ: 12500, フ: 12501, ブ: 12502, プ: 12503, ヘ: 12504
 * ベ: 12505, ペ: 12506, ホ: 12507, ボ: 12508, ポ: 12509, マ: 12510, ミ: 12511
 * ム: 12512, メ: 12513, モ: 12514, ャ: 12515, ヤ: 12516, ュ: 12517, ユ: 12518
 * ョ: 12519, ヨ: 12520, ラ: 12521, リ: 12522, ル: 12523, レ: 12524, ロ: 12525
 * ヮ: 12526, ワ: 12527, ヰ: 12528, ヱ: 12529, ヲ: 12530, ン: 12531, ヴ: 12532
 */
export default (raw) => {
  let changed = raw;

  // 탁점 처리
  let index = _.findIndex(changed, c => c.charCodeAt() === DAKUTEN_CODE);

  while (index > -1) {
    const target = changed[index - 1];
    const targetCode = target.charCodeAt();

    let replaced;

    if (
      targetCode === 12363
      || targetCode === 12365
      || targetCode === 12367
      || targetCode === 12369
      || targetCode === 12371
      || targetCode === 12373
      || targetCode === 12375
      || targetCode === 12377
      || targetCode === 12379
      || targetCode === 12381
      || targetCode === 12383
      || targetCode === 12385
      || targetCode === 12388
      || targetCode === 12390
      || targetCode === 12392
      || targetCode === 12399
      || targetCode === 12402
      || targetCode === 12405
      || targetCode === 12408
      || targetCode === 12411
      || targetCode === 12459
      || targetCode === 12461
      || targetCode === 12463
      || targetCode === 12465
      || targetCode === 12467
      || targetCode === 12469
      || targetCode === 12471
      || targetCode === 12473
      || targetCode === 12475
      || targetCode === 12477
      || targetCode === 12479
      || targetCode === 12481
      || targetCode === 12484
      || targetCode === 12486
      || targetCode === 12488
      || targetCode === 12495
      || targetCode === 12498
      || targetCode === 12501
      || targetCode === 12504
      || targetCode === 12507
    ) {
      replaced = String.fromCharCode(targetCode + 1);
    } else {
      replaced = `${target}${changed[index]}`;
    }

    changed = _.replace(changed, `${target}${changed[index]}`, replaced);
    index = _.findIndex(changed, c => c.charCodeAt() === DAKUTEN_CODE, index + 1);
  }

  // 반탁점 처리
  index = _.findIndex(changed, c => c.charCodeAt() === HAN_DAKUTEN_CODE);

  while (index > -1) {
    const target = changed[index - 1];
    const targetCode = target.charCodeAt();

    let replaced;

    if (
      targetCode === 12399
      || targetCode === 12402
      || targetCode === 12405
      || targetCode === 12408
      || targetCode === 12411
      || targetCode === 12495
      || targetCode === 12498
      || targetCode === 12501
      || targetCode === 12504
      || targetCode === 12507
    ) {
      replaced = String.fromCharCode(targetCode + 2);
    } else {
      replaced = `${target}${changed[index]}`;
    }

    changed = _.replace(changed, `${target}${changed[index]}`, replaced);
    index = _.findIndex(changed, c => c.charCodeAt() === HAN_DAKUTEN_CODE, index + 1);
  }

  return changed;
};

import _ from 'lodash';
import replaceDakuten, {
  DAKUTEN_CODE,
  HAN_DAKUTEN_CODE,
} from '../replaceDakuten';


describe('replaceDakuten.js', () => {
  it('탁점이 붙을 수 있는 히라가나인 붙은 경우', () => {
    const c = String.fromCharCode(DAKUTEN_CODE);
    const target = _.join(_.map('かきくけこさしすせそたちつてとはひふへほ', s => `${s}${c}`), '');
    const replaced = replaceDakuten(target);

    expect(replaced).toBe('がぎぐげござじずぜぞだぢづでどばびぶべぼ');
  });

  it('탁점이 붙을 수 없는 히라가나인 경우', () => {
    const c = String.fromCharCode(DAKUTEN_CODE);
    const target = _.join(_.map('えぉおがぎぐげござじずぜぞだぢっづでどなにぬねのばぱびぴぶぷべぺぼぽまみ', s => `${s}${c}`), '');
    const replaced = replaceDakuten(target);

    expect(target).toBe(replaced);
  });

  it('반탁점이 붙을 수 있는 히라가나인 경우', () => {
    const c = String.fromCharCode(HAN_DAKUTEN_CODE);
    const target = _.join(_.map('はひふへほ', s => `${s}${c}`), '');
    const replaced = replaceDakuten(target);

    expect(replaced).toBe('ぱぴぷぺぽ');
  });

  it('반탁점이 붙을 수 없는 히라가나인 경우', () => {
    const c = String.fromCharCode(HAN_DAKUTEN_CODE);
    const target = _.join(_.map('えぉおかがきぎくぐけげこごさざしじすずせぜそぞただちぢっつづてでとどなにぬねのばぱびぴぶぷべぺぼぽまみ', s => `${s}${c}`), '');
    const replaced = replaceDakuten(target);

    expect(target).toBe(replaced);
  });

  it('탁점이 붙을 수 있는 가타가나인 경우', () => {
    const c = String.fromCharCode(DAKUTEN_CODE);
    const target = _.join(_.map('カキクケコサシスセソタチツテトハヒフヘホ', s => `${s}${c}`), '');
    const replaced = replaceDakuten(target);

    expect(replaced).toBe('ガギグゲゴザジズゼゾダヂヅデドバビブベボ');
  });

  it('탁점이 붙을 수 없는 가타가나인 경우', () => {
    const c = String.fromCharCode(DAKUTEN_CODE);
    const target = _.join(_.map('ァアィイゥウェエォオガギグゲゴザジズゼゾダヂッヅデドナニヌネノバパビピブプベペボポマミムメモャヤュユョヨラリルレロヮワヰヱヲンヴ', s => `${s}${c}`), '');
    const replaced = replaceDakuten(target);

    expect(target).toBe(replaced);
  });

  it('반탁점이 붙을 수 있는 가타가나인 경우', () => {
    const c = String.fromCharCode(HAN_DAKUTEN_CODE);
    const target = _.join(_.map('ハヒフヘホ', s => `${s}${c}`), '');
    const replaced = replaceDakuten(target);

    expect(replaced).toBe('パピプペポ');
  });

  it('반탁점이 붙을 수 없는 가타가나인 경우', () => {
    const c = String.fromCharCode(HAN_DAKUTEN_CODE);
    const target = _.join(_.map('ァアィイゥウェエォオカガキギクグケゲコゴサザシジスズセゼソゾタダチヂッツヅテデトドナニヌネノバパビピブプベペボポマミムメモャヤュユョヨラリルレロヮワヰヱヲンヴ', s => `${s}${c}`), '');
    const replaced = replaceDakuten(target);

    expect(target).toBe(replaced);
  });
});