WanaKana

Utilities for detecting and transliterating between Hiragana, Katakana, and Romaji

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// ==UserScript==
// @name        WanaKana
// @version     1.3.7
// @namespace   https://github.com/WaniKani/WanaKana
// @description Utilities for detecting and transliterating between Hiragana, Katakana, and Romaji
// @author      Mims H. Wright
// @license     MIT; http://opensource.org/licenses/MIT
// ==/UserScript==

/*
The MIT License (MIT)

Copyright (c) 2013 WaniKani Community Github

Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
the Software, and to permit persons to whom the Software is furnished to do so,
subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/

var wanakana,
  __indexOf = [].indexOf || function(item) { for (var i = 0, l = this.length; i < l; i++) { if (i in this && this[i] === item) return i; } return -1; };

wanakana = wanakana || {};

wanakana.version = "1.3.7";

if (typeof define === "function" && define.amd) {
  define("wanakana", [], function() {
    return wanakana;
  });
}

wanakana.LOWERCASE_START = 0x61;

wanakana.LOWERCASE_END = 0x7A;

wanakana.UPPERCASE_START = 0x41;

wanakana.UPPERCASE_END = 0x5A;

wanakana.HIRAGANA_START = 0x3041;

wanakana.HIRAGANA_END = 0x3096;

wanakana.KATAKANA_START = 0x30A1;

wanakana.KATAKANA_END = 0x30FA;

wanakana.LOWERCASE_FULLWIDTH_START = 0xFF41;

wanakana.LOWERCASE_FULLWIDTH_END = 0xFF5A;

wanakana.UPPERCASE_FULLWIDTH_START = 0xFF21;

wanakana.UPPERCASE_FULLWIDTH_END = 0xFF3A;

wanakana.defaultOptions = {
  useObseleteKana: false,
  IMEMode: false
};

/**
 * Automatically sets up an input field to be an IME.
*/


wanakana.bind = function(input) {
  return input.addEventListener('input', wanakana._onInput);
};

wanakana.unbind = function(input) {
  return input.removeEventListener('input', wanakana._onInput);
};

wanakana._onInput = function(event) {
  var input, newText, normalizedInputString, range, startingCursor, startingLength;
  input = event.target;
  startingCursor = input.selectionStart;
  startingLength = input.value.length;
  normalizedInputString = wanakana._convertFullwidthCharsToASCII(input.value);
  newText = wanakana.toKana(normalizedInputString, {
    IMEMode: true
  });
  if (normalizedInputString !== newText) {
    input.value = newText;
    if (typeof input.selectionStart === "number") {
      return input.selectionStart = input.selectionEnd = input.value.length;
    } else if (typeof input.createTextRange !== "undefined") {
      input.focus();
      range = input.createTextRange();
      range.collapse(false);
      return range.select();
    }
  }
};

wanakana._extend = function(target, source) {
  var prop;
  if (target == null) {
    return source;
  }
  for (prop in source) {
    if ((target[prop] == null) && (source[prop] != null)) {
      target[prop] = source[prop];
    }
  }
  return target;
};

/**
 * Takes a character and a unicode range. Returns true if the char is in the range.
*/


wanakana._isCharInRange = function(char, start, end) {
  var code;
  code = char.charCodeAt(0);
  return (start <= code && code <= end);
};

wanakana._isCharVowel = function(char, includeY) {
  var regexp;
  if (includeY == null) {
    includeY = true;
  }
  regexp = includeY ? /[aeiouy]/ : /[aeiou]/;
  return char.toLowerCase().charAt(0).search(regexp) !== -1;
};

wanakana._isCharConsonant = function(char, includeY) {
  var regexp;
  if (includeY == null) {
    includeY = true;
  }
  regexp = includeY ? /[bcdfghjklmnpqrstvwxyz]/ : /[bcdfghjklmnpqrstvwxz]/;
  return char.toLowerCase().charAt(0).search(regexp) !== -1;
};

wanakana._isCharKatakana = function(char) {
  return wanakana._isCharInRange(char, wanakana.KATAKANA_START, wanakana.KATAKANA_END);
};

wanakana._isCharHiragana = function(char) {
  return wanakana._isCharInRange(char, wanakana.HIRAGANA_START, wanakana.HIRAGANA_END);
};

wanakana._isCharKana = function(char) {
  return wanakana._isCharHiragana(char) || wanakana._isCharKatakana(char);
};

wanakana._isCharNotKana = function(char) {
  return !wanakana._isCharHiragana(char) && !wanakana._isCharKatakana(char);
};

wanakana._convertFullwidthCharsToASCII = function(string) {
  var char, chars, code, i, _i, _len;
  chars = string.split("");
  for (i = _i = 0, _len = chars.length; _i < _len; i = ++_i) {
    char = chars[i];
    code = char.charCodeAt(0);
    if (wanakana._isCharInRange(char, wanakana.LOWERCASE_FULLWIDTH_START, wanakana.LOWERCASE_FULLWIDTH_END)) {
      chars[i] = String.fromCharCode(code - wanakana.LOWERCASE_FULLWIDTH_START + wanakana.LOWERCASE_START);
    }
    if (wanakana._isCharInRange(char, wanakana.UPPERCASE_FULLWIDTH_START, wanakana.UPPERCASE_FULLWIDTH_END)) {
      chars[i](String.fromCharCode(code - wanakana.UPPERCASE_FULLWIDTH_START + wanakana.UPPERCASE_START));
    }
  }
  return chars.join("");
};

wanakana._katakanaToHiragana = function(kata) {
  var code, hira, hiraChar, kataChar, _i, _len, _ref;
  hira = [];
  _ref = kata.split("");
  for (_i = 0, _len = _ref.length; _i < _len; _i++) {
    kataChar = _ref[_i];
    if (wanakana._isCharKatakana(kataChar)) {
      code = kataChar.charCodeAt(0);
      code += wanakana.HIRAGANA_START - wanakana.KATAKANA_START;
      hiraChar = String.fromCharCode(code);
      hira.push(hiraChar);
    } else {
      hira.push(kataChar);
    }
  }
  return hira.join("");
};

wanakana._hiraganaToKatakana = function(hira) {
  var code, hiraChar, kata, kataChar, _i, _len, _ref;
  kata = [];
  _ref = hira.split("");
  for (_i = 0, _len = _ref.length; _i < _len; _i++) {
    hiraChar = _ref[_i];
    if (wanakana._isCharHiragana(hiraChar)) {
      code = hiraChar.charCodeAt(0);
      code += wanakana.KATAKANA_START - wanakana.HIRAGANA_START;
      kataChar = String.fromCharCode(code);
      kata.push(kataChar);
    } else {
      kata.push(hiraChar);
    }
  }
  return kata.join("");
};

wanakana._hiraganaToRomaji = function(hira, options) {
  var chunk, chunkSize, cursor, getChunk, len, maxChunk, nextCharIsDoubleConsonant, resetChunkSize, roma, romaChar;
  options = wanakana._extend(options, wanakana.defaultOptions);
  len = hira.length;
  roma = [];
  cursor = 0;
  chunkSize = 0;
  maxChunk = 2;
  getChunk = function() {
    return hira.substr(cursor, chunkSize);
  };
  resetChunkSize = function() {
    return chunkSize = Math.min(maxChunk, len - cursor);
  };
  while (cursor < len) {
    resetChunkSize();
    while (chunkSize > 0) {
      chunk = getChunk();
      if (wanakana.isKatakana(chunk)) {
        chunk = wanakana._katakanaToHiragana(chunk);
      }
      if (chunk.charAt(0) === "っ" && chunkSize === 1 && cursor < (len - 1)) {
        nextCharIsDoubleConsonant = true;
        romaChar = "";
        break;
      }
      romaChar = wanakana.J_to_R[chunk];
      if ((romaChar != null) && nextCharIsDoubleConsonant) {
        romaChar = romaChar.charAt(0).concat(romaChar);
        nextCharIsDoubleConsonant = false;
      }
      if (romaChar != null) {
        break;
      }
      chunkSize--;
    }
    if (romaChar == null) {
      romaChar = chunk;
    }
    roma.push(romaChar);
    cursor += chunkSize || 1;
  }
  return roma.join("");
};

wanakana._romajiToHiragana = function(roma, options) {
  return wanakana._romajiToKana(roma, options, true);
};

wanakana._romajiToKana = function(roma, options, ignoreCase) {
  var chunk, chunkLC, chunkSize, cursor, getChunk, isCharUpperCase, kana, kanaChar, len, maxChunk;
  if (ignoreCase == null) {
    ignoreCase = false;
  }
  options = wanakana._extend(options, wanakana.defaultOptions);
  len = roma.length;
  kana = [];
  cursor = 0;
  maxChunk = 3;
  getChunk = function() {
    return roma.substr(cursor, chunkSize);
  };
  isCharUpperCase = function(char) {
    return wanakana._isCharInRange(char, wanakana.UPPERCASE_START, wanakana.UPPERCASE_END);
  };
  while (cursor < len) {
    chunkSize = Math.min(maxChunk, len - cursor);
    while (chunkSize > 0) {
      chunk = getChunk();
      chunkLC = chunk.toLowerCase();
      if (__indexOf.call(wanakana.FOUR_CHARACTER_EDGE_CASES, chunkLC) >= 0 && (len - cursor) >= 4) {
        chunkSize++;
        chunk = getChunk();
        chunkLC = chunk.toLowerCase();
      } else {
        if (chunkLC.charAt(0) === "n") {
          if (options.IMEMode && chunkLC.charAt(1) === "'" && chunkSize === 2) {
            kanaChar = "ん";
            break;
          }
          if (wanakana._isCharConsonant(chunkLC.charAt(1), false) && wanakana._isCharVowel(chunkLC.charAt(2))) {
            chunkSize = 1;
            chunk = getChunk();
            chunkLC = chunk.toLowerCase();
          }
        }
        if (chunkLC.charAt(0) !== "n" && wanakana._isCharConsonant(chunkLC.charAt(0)) && chunk.charAt(0) === chunk.charAt(1)) {
          chunkSize = 1;
          if (wanakana._isCharInRange(chunk.charAt(0), wanakana.UPPERCASE_START, wanakana.UPPERCASE_END)) {
            chunkLC = chunk = "ッ";
          } else {
            chunkLC = chunk = "っ";
          }
        }
      }
      kanaChar = wanakana.R_to_J[chunkLC];
      if (kanaChar != null) {
        break;
      }
      if (chunkSize === 4) {
        chunkSize -= 2;
      } else {
        chunkSize--;
      }
    }
    if (kanaChar == null) {
      chunk = wanakana._convertPunctuation(chunk);
      kanaChar = chunk;
    }
    if (options != null ? options.useObseleteKana : void 0) {
      if (chunkLC === "wi") {
        kanaChar = "ゐ";
      }
      if (chunkLC === "we") {
        kanaChar = "ゑ";
      }
    }
    if (options.IMEMode && chunkLC.charAt(0) === "n") {
      if (roma.charAt(cursor + 1).toLowerCase() === "y" && wanakana._isCharVowel(roma.charAt(cursor + 2)) === false || cursor === (len - 1) || wanakana.isKana(roma.charAt(cursor + 1))) {
        kanaChar = chunk.charAt(0);
      }
    }
    if (!ignoreCase) {
      if (isCharUpperCase(chunk.charAt(0))) {
        kanaChar = wanakana._hiraganaToKatakana(kanaChar);
      }
    }
    kana.push(kanaChar);
    cursor += chunkSize || 1;
  }
  return kana.join("");
};

wanakana._convertPunctuation = function(input, options) {
  if (input === ' ') {
    return ' ';
  }
  if (input === '-') {
    return 'ー';
  }
  return input;
};

/**
* Returns true if input is entirely hiragana.
*/


wanakana.isHiragana = function(input) {
  var chars;
  chars = input.split("");
  return chars.every(wanakana._isCharHiragana);
};

wanakana.isKatakana = function(input) {
  var chars;
  chars = input.split("");
  return chars.every(wanakana._isCharKatakana);
};

wanakana.isKana = function(input) {
  var chars;
  chars = input.split("");
  return chars.every(function(char) {
    return (wanakana.isHiragana(char)) || (wanakana.isKatakana(char));
  });
};

wanakana.isRomaji = function(input) {
  var chars;
  chars = input.split("");
  return chars.every(function(char) {
    return (!wanakana.isHiragana(char)) && (!wanakana.isKatakana(char));
  });
};

wanakana.toHiragana = function(input, options) {
  if (wanakana.isRomaji(input)) {
    return input = wanakana._romajiToHiragana(input, options);
  }
  if (wanakana.isKatakana(input)) {
    return input = wanakana._katakanaToHiragana(input, options);
  }
  return input;
};

wanakana.toKatakana = function(input, options) {
  if (wanakana.isHiragana(input)) {
    return input = wanakana._hiraganaToKatakana(input, options);
  }
  if (wanakana.isRomaji(input)) {
    input = wanakana._romajiToHiragana(input, options);
    return input = wanakana._hiraganaToKatakana(input, options);
  }
  return input;
};

wanakana.toKana = function(input, options) {
  return input = wanakana._romajiToKana(input, options);
};

wanakana.toRomaji = function(input, options) {
  return input = wanakana._hiraganaToRomaji(input);
};

wanakana.R_to_J = {
  a: 'あ',
  i: 'い',
  u: 'う',
  e: 'え',
  o: 'お',
  yi: 'い',
  wu: 'う',
  whu: 'う',
  xa: 'ぁ',
  xi: 'ぃ',
  xu: 'ぅ',
  xe: 'ぇ',
  xo: 'ぉ',
  xyi: 'ぃ',
  xye: 'ぇ',
  ye: 'いぇ',
  wha: 'うぁ',
  whi: 'うぃ',
  whe: 'うぇ',
  who: 'うぉ',
  wi: 'うぃ',
  we: 'うぇ',
  va: 'ゔぁ',
  vi: 'ゔぃ',
  vu: 'ゔ',
  ve: 'ゔぇ',
  vo: 'ゔぉ',
  vya: 'ゔゃ',
  vyi: 'ゔぃ',
  vyu: 'ゔゅ',
  vye: 'ゔぇ',
  vyo: 'ゔょ',
  ka: 'か',
  ki: 'き',
  ku: 'く',
  ke: 'け',
  ko: 'こ',
  lka: 'ヵ',
  lke: 'ヶ',
  xka: 'ヵ',
  xke: 'ヶ',
  kya: 'きゃ',
  kyi: 'きぃ',
  kyu: 'きゅ',
  kye: 'きぇ',
  kyo: 'きょ',
  ca: 'か',
  ci: 'き',
  cu: 'く',
  ce: 'け',
  co: 'こ',
  lca: 'ヵ',
  lce: 'ヶ',
  xca: 'ヵ',
  xce: 'ヶ',
  qya: 'くゃ',
  qyu: 'くゅ',
  qyo: 'くょ',
  qwa: 'くぁ',
  qwi: 'くぃ',
  qwu: 'くぅ',
  qwe: 'くぇ',
  qwo: 'くぉ',
  qa: 'くぁ',
  qi: 'くぃ',
  qe: 'くぇ',
  qo: 'くぉ',
  kwa: 'くぁ',
  qyi: 'くぃ',
  qye: 'くぇ',
  ga: 'が',
  gi: 'ぎ',
  gu: 'ぐ',
  ge: 'げ',
  go: 'ご',
  gya: 'ぎゃ',
  gyi: 'ぎぃ',
  gyu: 'ぎゅ',
  gye: 'ぎぇ',
  gyo: 'ぎょ',
  gwa: 'ぐぁ',
  gwi: 'ぐぃ',
  gwu: 'ぐぅ',
  gwe: 'ぐぇ',
  gwo: 'ぐぉ',
  sa: 'さ',
  si: 'し',
  shi: 'し',
  su: 'す',
  se: 'せ',
  so: 'そ',
  za: 'ざ',
  zi: 'じ',
  zu: 'ず',
  ze: 'ぜ',
  zo: 'ぞ',
  ji: 'じ',
  sya: 'しゃ',
  syi: 'しぃ',
  syu: 'しゅ',
  sye: 'しぇ',
  syo: 'しょ',
  sha: 'しゃ',
  shu: 'しゅ',
  she: 'しぇ',
  sho: 'しょ',
  shya: 'しゃ',
  shyu: 'しゅ',
  shye: 'しぇ',
  shyo: 'しょ',
  swa: 'すぁ',
  swi: 'すぃ',
  swu: 'すぅ',
  swe: 'すぇ',
  swo: 'すぉ',
  zya: 'じゃ',
  zyi: 'じぃ',
  zyu: 'じゅ',
  zye: 'じぇ',
  zyo: 'じょ',
  ja: 'じゃ',
  ju: 'じゅ',
  je: 'じぇ',
  jo: 'じょ',
  jya: 'じゃ',
  jyi: 'じぃ',
  jyu: 'じゅ',
  jye: 'じぇ',
  jyo: 'じょ',
  ta: 'た',
  ti: 'ち',
  tu: 'つ',
  te: 'て',
  to: 'と',
  chi: 'ち',
  tsu: 'つ',
  ltu: 'っ',
  xtu: 'っ',
  tya: 'ちゃ',
  tyi: 'ちぃ',
  tyu: 'ちゅ',
  tye: 'ちぇ',
  tyo: 'ちょ',
  cha: 'ちゃ',
  chu: 'ちゅ',
  che: 'ちぇ',
  cho: 'ちょ',
  cya: 'ちゃ',
  cyi: 'ちぃ',
  cyu: 'ちゅ',
  cye: 'ちぇ',
  cyo: 'ちょ',
  chya: 'ちゃ',
  chyu: 'ちゅ',
  chye: 'ちぇ',
  chyo: 'ちょ',
  tsa: 'つぁ',
  tsi: 'つぃ',
  tse: 'つぇ',
  tso: 'つぉ',
  tha: 'てゃ',
  thi: 'てぃ',
  thu: 'てゅ',
  the: 'てぇ',
  tho: 'てょ',
  twa: 'とぁ',
  twi: 'とぃ',
  twu: 'とぅ',
  twe: 'とぇ',
  two: 'とぉ',
  da: 'だ',
  di: 'ぢ',
  du: 'づ',
  de: 'で',
  "do": 'ど',
  dya: 'ぢゃ',
  dyi: 'ぢぃ',
  dyu: 'ぢゅ',
  dye: 'ぢぇ',
  dyo: 'ぢょ',
  dha: 'でゃ',
  dhi: 'でぃ',
  dhu: 'でゅ',
  dhe: 'でぇ',
  dho: 'でょ',
  dwa: 'どぁ',
  dwi: 'どぃ',
  dwu: 'どぅ',
  dwe: 'どぇ',
  dwo: 'どぉ',
  na: 'な',
  ni: 'に',
  nu: 'ぬ',
  ne: 'ね',
  no: 'の',
  nya: 'にゃ',
  nyi: 'にぃ',
  nyu: 'にゅ',
  nye: 'にぇ',
  nyo: 'にょ',
  ha: 'は',
  hi: 'ひ',
  hu: 'ふ',
  he: 'へ',
  ho: 'ほ',
  fu: 'ふ',
  hya: 'ひゃ',
  hyi: 'ひぃ',
  hyu: 'ひゅ',
  hye: 'ひぇ',
  hyo: 'ひょ',
  fya: 'ふゃ',
  fyu: 'ふゅ',
  fyo: 'ふょ',
  fwa: 'ふぁ',
  fwi: 'ふぃ',
  fwu: 'ふぅ',
  fwe: 'ふぇ',
  fwo: 'ふぉ',
  fa: 'ふぁ',
  fi: 'ふぃ',
  fe: 'ふぇ',
  fo: 'ふぉ',
  fyi: 'ふぃ',
  fye: 'ふぇ',
  ba: 'ば',
  bi: 'び',
  bu: 'ぶ',
  be: 'べ',
  bo: 'ぼ',
  bya: 'びゃ',
  byi: 'びぃ',
  byu: 'びゅ',
  bye: 'びぇ',
  byo: 'びょ',
  pa: 'ぱ',
  pi: 'ぴ',
  pu: 'ぷ',
  pe: 'ぺ',
  po: 'ぽ',
  pya: 'ぴゃ',
  pyi: 'ぴぃ',
  pyu: 'ぴゅ',
  pye: 'ぴぇ',
  pyo: 'ぴょ',
  ma: 'ま',
  mi: 'み',
  mu: 'む',
  me: 'め',
  mo: 'も',
  mya: 'みゃ',
  myi: 'みぃ',
  myu: 'みゅ',
  mye: 'みぇ',
  myo: 'みょ',
  ya: 'や',
  yu: 'ゆ',
  yo: 'よ',
  xya: 'ゃ',
  xyu: 'ゅ',
  xyo: 'ょ',
  ra: 'ら',
  ri: 'り',
  ru: 'る',
  re: 'れ',
  ro: 'ろ',
  rya: 'りゃ',
  ryi: 'りぃ',
  ryu: 'りゅ',
  rye: 'りぇ',
  ryo: 'りょ',
  la: 'ら',
  li: 'り',
  lu: 'る',
  le: 'れ',
  lo: 'ろ',
  lya: 'りゃ',
  lyi: 'りぃ',
  lyu: 'りゅ',
  lye: 'りぇ',
  lyo: 'りょ',
  wa: 'わ',
  wo: 'を',
  lwe: 'ゎ',
  xwa: 'ゎ',
  n: 'ん',
  nn: 'ん',
  'n ': 'ん',
  xn: 'ん',
  ltsu: 'っ'
};

wanakana.FOUR_CHARACTER_EDGE_CASES = ['lts', 'chy', 'shy'];

wanakana.J_to_R = {
  あ: 'a',
  い: 'i',
  う: 'u',
  え: 'e',
  お: 'o',
  ゔぁ: 'va',
  ゔぃ: 'vi',
  ゔ: 'vu',
  ゔぇ: 've',
  ゔぉ: 'vo',
  か: 'ka',
  き: 'ki',
  きゃ: 'kya',
  きぃ: 'kyi',
  きゅ: 'kyu',
  く: 'ku',
  け: 'ke',
  こ: 'ko',
  が: 'ga',
  ぎ: 'gi',
  ぐ: 'gu',
  げ: 'ge',
  ご: 'go',
  ぎゃ: 'gya',
  ぎぃ: 'gyi',
  ぎゅ: 'gyu',
  ぎぇ: 'gye',
  ぎょ: 'gyo',
  さ: 'sa',
  す: 'su',
  せ: 'se',
  そ: 'so',
  ざ: 'za',
  ず: 'zu',
  ぜ: 'ze',
  ぞ: 'zo',
  し: 'shi',
  しゃ: 'sha',
  しゅ: 'shu',
  しょ: 'sho',
  じ: 'ji',
  じゃ: 'ja',
  じゅ: 'ju',
  じょ: 'jo',
  た: 'ta',
  ち: 'chi',
  ちゃ: 'cha',
  ちゅ: 'chu',
  ちょ: 'cho',
  つ: 'tsu',
  て: 'te',
  と: 'to',
  だ: 'da',
  ぢ: 'di',
  づ: 'du',
  で: 'de',
  ど: 'do',
  な: 'na',
  に: 'ni',
  にゃ: 'nya',
  にゅ: 'nyu',
  にょ: 'nyo',
  ぬ: 'nu',
  ね: 'ne',
  の: 'no',
  は: 'ha',
  ひ: 'hi',
  ふ: 'fu',
  へ: 'he',
  ほ: 'ho',
  ひゃ: 'hya',
  ひゅ: 'hyu',
  ひょ: 'hyo',
  ふぁ: 'fa',
  ふぃ: 'fi',
  ふぇ: 'fe',
  ふぉ: 'fo',
  ば: 'ba',
  び: 'bi',
  ぶ: 'bu',
  べ: 'be',
  ぼ: 'bo',
  びゃ: 'bya',
  びゅ: 'byu',
  びょ: 'byo',
  ぱ: 'pa',
  ぴ: 'pi',
  ぷ: 'pu',
  ぺ: 'pe',
  ぽ: 'po',
  ぴゃ: 'pya',
  ぴゅ: 'pyu',
  ぴょ: 'pyo',
  ま: 'ma',
  み: 'mi',
  む: 'mu',
  め: 'me',
  も: 'mo',
  みゃ: 'mya',
  みゅ: 'myu',
  みょ: 'myo',
  や: 'ya',
  ゆ: 'yu',
  よ: 'yo',
  ら: 'ra',
  り: 'ri',
  る: 'ru',
  れ: 're',
  ろ: 'ro',
  りゃ: 'rya',
  りゅ: 'ryu',
  りょ: 'ryo',
  わ: 'wa',
  を: 'wo',
  ん: 'n',
  ゐ: 'wi',
  ゑ: 'we',
  きぇ: 'kye',
  きょ: 'kyo',
  じぃ: 'jyi',
  じぇ: 'jye',
  ちぃ: 'cyi',
  ちぇ: 'che',
  ひぃ: 'hyi',
  ひぇ: 'hye',
  びぃ: 'byi',
  びぇ: 'bye',
  ぴぃ: 'pyi',
  ぴぇ: 'pye',
  みぇ: 'mye',
  みぃ: 'myi',
  りぃ: 'ryi',
  りぇ: 'rye',
  にぃ: 'nyi',
  にぇ: 'nye',
  しぃ: 'syi',
  しぇ: 'she',
  いぇ: 'ye',
  うぁ: 'wha',
  うぉ: 'who',
  うぃ: 'wi',
  うぇ: 'we',
  ゔゃ: 'vya',
  ゔゅ: 'vyu',
  ゔょ: 'vyo',
  すぁ: 'swa',
  すぃ: 'swi',
  すぅ: 'swu',
  すぇ: 'swe',
  すぉ: 'swo',
  くゃ: 'qya',
  くゅ: 'qyu',
  くょ: 'qyo',
  くぁ: 'qwa',
  くぃ: 'qwi',
  くぅ: 'qwu',
  くぇ: 'qwe',
  くぉ: 'qwo',
  ぐぁ: 'gwa',
  ぐぃ: 'gwi',
  ぐぅ: 'gwu',
  ぐぇ: 'gwe',
  ぐぉ: 'gwo',
  つぁ: 'tsa',
  つぃ: 'tsi',
  つぇ: 'tse',
  つぉ: 'tso',
  てゃ: 'tha',
  てぃ: 'thi',
  てゅ: 'thu',
  てぇ: 'the',
  てょ: 'tho',
  とぁ: 'twa',
  とぃ: 'twi',
  とぅ: 'twu',
  とぇ: 'twe',
  とぉ: 'two',
  ぢゃ: 'dya',
  ぢぃ: 'dyi',
  ぢゅ: 'dyu',
  ぢぇ: 'dye',
  ぢょ: 'dyo',
  でゃ: 'dha',
  でぃ: 'dhi',
  でゅ: 'dhu',
  でぇ: 'dhe',
  でょ: 'dho',
  どぁ: 'dwa',
  どぃ: 'dwi',
  どぅ: 'dwu',
  どぇ: 'dwe',
  どぉ: 'dwo',
  ふぅ: 'fwu',
  ふゃ: 'fya',
  ふゅ: 'fyu',
  ふょ: 'fyo',
  ぁ: 'a',
  ぃ: 'i',
  ぇ: 'e',
  ぅ: 'u',
  ぉ: 'o',
  ゃ: 'ya',
  ゅ: 'yu',
  ょ: 'yo',
  っ: '',
  ゕ: 'ka',
  ゖ: 'ka',
  ゎ: 'wa',
  ' ': ' ',
  んあ: 'n\'a',
  んい: 'n\'i',
  んう: 'n\'u',
  んえ: 'n\'e',
  んお: 'n\'o',
  んや: 'n\'ya',
  んゆ: 'n\'yu',
  んよ: 'n\'yo'
};