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108 changes: 108 additions & 0 deletions lib/romanize.rb
Original file line number Diff line number Diff line change
@@ -1,4 +1,112 @@
module Romanize
def romanize(s)

dictionary = Hash.new
dictionary = {
'あ' => 'a',
'い' => 'i',
'う' => 'u',
'え' => 'e',
'お' => 'o',
'か' => 'ka',
'き' => 'ki',
'く' => 'ku',
'け' => 'ke',
'こ' => 'ko',
'さ' => 'sa',
'し' => 'si',
'す' => 'su',
'せ' => 'se',
'そ' => 'so',
'た' => 'ta',
'ち' => 'ti',
'つ' => 'tu',
'て' => 'te',
'と' => 'to',
'な' => 'na',
'に' => 'ni',
'ぬ' => 'nu',
'ね' => 'ne',
'の' => 'no',
'は' => 'ha',
'ひ' => 'hi',
'ふ' => 'hu',
'へ' => 'he',
'ほ' => 'ho',
'ま' => 'ma',
'み' => 'mi',
'む' => 'mu',
'め' => 'me',
'も' => 'mo',
'や' => 'ya',
'ゆ' => 'yu',
'よ' => 'yo',
'ら' => 'ra',
'り' => 'ri',
'る' => 'ru',
'れ' => 're',
'ろ' => 'ro',
'わ' => 'wa',
'ゐ' => 'wi',
'ゑ' => 'we',
'を' => 'wo',
'ん' => 'n',
'が' => 'ga',
'ぎ' => 'gi',
'ぐ' => 'gu',
'げ' => 'ge',
'ご' => 'go',
'ざ' => 'za',
'じ' => 'zi',
'ず' => 'zu',
'ぜ' => 'ze',
'ぞ' => 'zo',
'だ' => 'da',
'ぢ' => 'di',
'づ' => 'du',
'で' => 'de',
'ど' => 'do',
'ば' => 'ba',
'び' => 'bi',
'ぶ' => 'bu',
'べ' => 'be',
'ぼ' => 'bo',
'ぱ' => 'pa',
'ぴ' => 'pi',
'ぷ' => 'pu',
'ぺ' => 'pe',
'ぽ' => 'po',
'きゃ'=> 'kya', 'きゅ'=> 'kyu', 'きょ'=> 'kyo',
'しゃ'=> 'sya', 'しゅ'=> 'syu', 'しょ'=> 'syo',
'ちゃ'=> 'tya', 'ちゅ'=> 'tyu', 'ちょ'=> 'tyo',
'にゃ'=> 'nya', 'にゅ'=> 'nyu', 'にょ'=> 'nyo',
'ひゃ'=> 'hya', 'ひゅ'=> 'hyu', 'ひょ'=> 'hyo',
'みゃ'=> 'mya', 'みゅ'=> 'myu', 'みょ'=> 'myo',
'りゃ'=> 'rya', 'りゅ'=> 'ryu', 'りょ'=> 'ryo',
'ぎゃ'=> 'gya', 'ぎゅ'=> 'gyu', 'ぎょ'=> 'gyo',
'じゃ'=> 'zya', 'じゅ'=> 'zyu', 'じょ'=> 'zyo',
'ぢゃ'=> 'dya', 'ぢゅ'=> 'dyu', 'ぢょ'=> 'dyo',
'びゃ'=> 'bya', 'びゅ'=> 'byu', 'びょ'=> 'byo',
'ぴゃ'=> 'pya', 'ぴゅ'=> 'pyu', 'ぴょ'=> 'pyo'
}

small_letters = %w(ゃ ゅ ょ ぁ ぃ ぅ)

answer = ""
s.each_char.to_a.each_index do |index|
#next_letter = s[index+1]
#if next_letter
letter = s[index]
answer << dictionary[letter]
end
return answer

# if s == 'ひらがな'
# return 'hiragana'
# elsif s == 'しんじゅく'
# return 'sinzyuku'
# elsif s == 'なっとう'
# return 'nattou'
# end
end
end
28 changes: 28 additions & 0 deletions spec/romanize_spec.rb
Original file line number Diff line number Diff line change
@@ -0,0 +1,28 @@
require 'romanize'

describe '#romanizeはひらがなをローマ字に変えられる' do
include Romanize


context 'ようおんを' do
it 'ローマ字に変えられる' do
expect( romanize('しんじゅく') ).to eq('sinzyuku')
end
end

context 'そくおん' do
it 'ローマ字に変えられる' do
expect( romanize('なっとう') ).to eq('nattou')
end
end

context 'ひらがなを' do
it 'ローマ字に変えられる' do
expect( romanize('ひらがな') ).to eq('hiragana')
end

it 'ローマ字に変えられる' do
expect( romanize('くつした') ).to eq('kutusita')
end
end
end