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japanese_transliterators.rb
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japanese_transliterators.rb
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# Encoding: UTF-8
class Ve
class Provider
class JapaneseTransliterators < Ve::Provider
def initialize(config = {})
end
def works?
true
end
def parse(text, options = {})
Ve::Parse::JapaneseTransliterators.new(text)
end
end
end
end
class Ve
class Parse
class JapaneseTransliterators < Ve::Parse
H_SYLLABIC_N = 'ん'
H_SMALL_TSU = 'っ'
HIRA_TO_LATN = {
"あ"=>"a", "い"=>"i", "う"=>"u", "え"=>"e", "お"=>"o",
"か"=>"ka", "き"=>"ki", "く"=>"ku", "け"=>"ke", "こ"=>"ko",
"が"=>"ga", "ぎ"=>"gi", "ぐ"=>"gu", "げ"=>"ge", "ご"=>"go",
"さ"=>"sa", "し"=>"shi", "す"=>"su", "せ"=>"se", "そ"=>"so",
"ざ"=>"za", "じ"=>"ji", "ず"=>"zu", "ぜ"=>"ze", "ぞ"=>"zo",
"た"=>"ta", "ち"=>"chi", "つ"=>"tsu", "て"=>"te", "と"=>"to",
"だ"=>"da", "ぢ"=>"ji", "づ"=>"zu", "で"=>"de", "ど"=>"do",
"な"=>"na", "に"=>"ni", "ぬ"=>"nu", "ね"=>"ne", "の"=>"no",
"は"=>"ha", "ひ"=>"hi", "ふ"=>"fu", "へ"=>"he", "ほ"=>"ho",
"ば"=>"ba", "び"=>"bi", "ぶ"=>"bu", "べ"=>"be", "ぼ"=>"bo",
"ぱ"=>"pa", "ぴ"=>"pi", "ぷ"=>"pu", "ぺ"=>"pe", "ぽ"=>"po",
"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", "うぃ"=>"whi", "うぇ"=>"whe", "を"=>"wo",
"ゑ"=>"we", "ゐ"=>"wi", "ー"=>"-", "ん"=>"n",
"きゃ"=>"kya", "きゅ"=>"kyu", "きょ"=>"kyo", "きぇ"=>"kye", "きぃ"=>"kyi",
"ぎゃ"=>"gya", "ぎゅ"=>"gyu", "ぎょ"=>"gyo", "ぎぇ"=>"gye", "ぎぃ"=>"gyi",
"くぁ"=>"kwa", "くぃ"=>"kwi", "くぅ"=>"kwu", "くぇ"=>"kwe", "くぉ"=>"kwo",
"ぐぁ"=>"qwa", "ぐぃ"=>"gwi", "ぐぅ"=>"gwu", "ぐぇ"=>"gwe", "ぐぉ"=>"gwo",
"しゃ"=>"sha", "しぃ"=>"syi", "しゅ"=>"shu", "しぇ"=>"she", "しょ"=>"sho",
"じゃ"=>"ja", "じゅ"=>"ju", "じぇ"=>"jye", "じょ"=>"jo", "じぃ"=>"jyi",
"すぁ"=>"swa", "すぃ"=>"swi", "すぅ"=>"swu", "すぇ"=>"swe", "すぉ"=>"swo",
"ちゃ"=>"cha", "ちゅ"=>"chu", "ちぇ"=>"tye", "ちょ"=>"cho", "ちぃ"=>"tyi",
"ぢゃ"=>"ja", "ぢぃ"=>"dyi", "ぢゅ"=>"ju", "ぢぇ"=>"dye", "ぢょ"=>"jo",
"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", "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", "にゃ"=>"nya",
"にゅ"=>"nyu", "にょ"=>"nyo", "にぇ"=>"nye", "にぃ"=>"nyi", "ひゃ"=>"hya",
"ひぃ"=>"hyi", "ひゅ"=>"hyu", "ひぇ"=>"hye", "ひょ"=>"hyo", "びゃ"=>"bya",
"びぃ"=>"byi", "びゅ"=>"byu", "びぇ"=>"bye", "びょ"=>"byo", "ぴゃ"=>"pya",
"ぴぃ"=>"pyi", "ぴゅ"=>"pyu", "ぴぇ"=>"pye", "ぴょ"=>"pyo", "ふぁ"=>"fwa",
"ふぃ"=>"fyi", "ふぇ"=>"fye", "ふぉ"=>"fwo", "ふぅ"=>"fwu", "ふゃ"=>"fya",
"ふゅ"=>"fyu", "ふょ"=>"fyo", "みゃ"=>"mya", "みぃ"=>"myi", "みゅ"=>"myu",
"みぇ"=>"mye", "みょ"=>"myo", "りゃ"=>"rya", "りぃ"=>"ryi", "りゅ"=>"ryu",
"りぇ"=>"rye", "りょ"=>"ryo",
"ゔぁ"=>"va", "ゔぃ"=>"vyi", "ゔ"=>"vu", "ゔぇ"=>"vye", "ゔぉ"=>"vo",
"ゔゃ"=>"vya", "ゔゅ"=>"vyu", "ゔょ"=>"vyo",
"うぁ"=>"wha", "いぇ"=>"ye", "うぉ"=>"who",
"ぁ"=>"xa", "ぃ"=>"xi", "ぅ"=>"xu", "ぇ"=>"xe", "ぉ"=>"xo",
"ゕ"=>"xka", "ゖ"=>"xke", "ゎ"=>"xwa"
}
LATN_TO_HIRA = {
'a' => 'あ', 'i' => 'い', 'u' => 'う', 'e' => 'え', 'o' => 'お',
'ka' => 'か', 'ki' => 'き', 'ku' => 'く', 'ke' => 'け', 'ko' => 'こ',
'ga' => 'が', 'gi' => 'ぎ', 'gu' => 'ぐ', 'ge' => 'げ', 'go' => 'ご',
'sa' => 'さ', 'si' => 'し', 'shi' => 'し', 'su' => 'す', 'se' => 'せ', 'so' => 'そ',
'za' => 'ざ', 'zi' => 'じ', 'ji' => 'じ', 'zu' => 'ず', 'ze' => 'ぜ', 'zo' => 'ぞ',
'ta' => 'た', 'ti' => 'ち', 'chi' => 'ち', 'tu' => 'つ', 'tsu'=> 'つ', 'te' => 'て', 'to' => 'と',
'da' => 'だ', 'di' => 'ぢ', 'du' => 'づ', 'dzu'=> 'づ', 'de' => 'で', 'do' => 'ど',
'na' => 'な', 'ni' => 'に', 'nu' => 'ぬ', 'ne' => 'ね', 'no' => 'の',
'ha' => 'は', 'hi' => 'ひ', 'hu' => 'ふ', 'fu' => 'ふ', 'he' => 'へ', 'ho' => 'ほ',
'ba' => 'ば', 'bi' => 'び', 'bu' => 'ぶ', 'be' => 'べ', 'bo' => 'ぼ',
'pa' => 'ぱ', 'pi' => 'ぴ', 'pu' => 'ぷ', 'pe' => 'ぺ', 'po' => 'ぽ',
'ma' => 'ま', 'mi' => 'み', 'mu' => 'む', 'me' => 'め', 'mo' => 'も',
'ya' => 'や', 'yu' => 'ゆ', 'yo' => 'よ',
'ra' => 'ら', 'ri' => 'り', 'ru' => 'る', 're' => 'れ', 'ro' => 'ろ',
'la' => 'ら', 'li' => 'り', 'lu' => 'る', 'le' => 'れ', 'lo' => 'ろ',
'wa' => 'わ', 'wi' => 'うぃ', 'we' => 'うぇ', 'wo' => 'を',
'wye' => 'ゑ', 'wyi' => 'ゐ', '-' => 'ー',
'n' => 'ん', 'nn' => 'ん', "n'"=> 'ん',
'kya' => 'きゃ', 'kyu' => 'きゅ', 'kyo' => 'きょ', 'kye' => 'きぇ', 'kyi' => 'きぃ',
'gya' => 'ぎゃ', 'gyu' => 'ぎゅ', 'gyo' => 'ぎょ', 'gye' => 'ぎぇ', 'gyi' => 'ぎぃ',
'kwa' => 'くぁ', 'kwi' => 'くぃ', 'kwu' => 'くぅ', 'kwe' => 'くぇ', 'kwo' => 'くぉ',
'gwa' => 'ぐぁ', 'gwi' => 'ぐぃ', 'gwu' => 'ぐぅ', 'gwe' => 'ぐぇ', 'gwo' => 'ぐぉ',
'qwa' => 'ぐぁ', 'qwi' => 'ぐぃ', 'qwu' => 'ぐぅ', 'qwe' => 'ぐぇ', 'qwo' => 'ぐぉ',
'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',
'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',
'zya' => 'じゃ', 'zyu' => 'じゅ', 'zyo' => 'じょ', 'zye' => 'じぇ', 'zyi' => 'じぃ',
'swa' => 'すぁ', 'swi' => 'すぃ', 'swu' => 'すぅ', 'swe' => 'すぇ', 'swo' => 'すぉ',
'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',
'tya' => 'ちゃ', 'tyi' => 'ちぃ', 'tyu' => 'ちゅ', 'tye' => 'ちぇ', 'tyo' => 'ちょ',
'dya' => 'ぢゃ', 'dyi' => 'ぢぃ', 'dyu' => 'ぢゅ', 'dye' => 'ぢぇ', 'dyo' => 'ぢょ',
'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',
'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',
'nya' => 'にゃ', 'nyu' => 'にゅ', 'nyo' => 'にょ', 'nye' => 'にぇ', 'nyi' => 'にぃ',
'hya' => 'ひゃ', 'hyi' => 'ひぃ', 'hyu' => 'ひゅ', 'hye' => 'ひぇ', 'hyo' => 'ひょ',
'bya' => 'びゃ', 'byi' => 'びぃ', 'byu' => 'びゅ', 'bye' => 'びぇ', 'byo' => 'びょ',
'pya' => 'ぴゃ', 'pyi' => 'ぴぃ', 'pyu' => 'ぴゅ', 'pye' => 'ぴぇ', 'pyo' => 'ぴょ',
'fa' => 'ふぁ', 'fi' => 'ふぃ', 'fe' => 'ふぇ', 'fo' => 'ふぉ',
'fwa' => 'ふぁ', 'fwi' => 'ふぃ', 'fwu' => 'ふぅ', 'fwe' => 'ふぇ', 'fwo' => 'ふぉ',
'fya' => 'ふゃ', 'fyi' => 'ふぃ', 'fyu' => 'ふゅ', 'fye' => 'ふぇ', 'fyo' => 'ふょ',
'mya' => 'みゃ', 'myi' => 'みぃ', 'myu' => 'みゅ', 'mye' => 'みぇ', 'myo' => 'みょ',
'rya' => 'りゃ', 'ryi' => 'りぃ', 'ryu' => 'りゅ', 'rye' => 'りぇ', 'ryo' => 'りょ',
'lya' => 'りゃ', 'lyu' => 'りゅ', 'lyo' => 'りょ', 'lye' => 'りぇ', 'lyi' => 'りぃ',
'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',
'wha' => 'うぁ', 'whi' => 'うぃ', 'ye' => 'いぇ', 'whe' => 'うぇ', 'who' => 'うぉ',
'xa' => 'ぁ', 'xi' => 'ぃ', 'xu' => 'ぅ', 'xe' => 'ぇ', 'xo' => 'ぉ',
'xya' => 'ゃ', 'xyu' => 'ゅ', 'xyo' => 'ょ',
'xtu' => 'っ', 'xtsu' => 'っ',
'xka' => 'ゕ', 'xke' => 'ゖ', 'xwa' => 'ゎ',
'@@' => ' ', '#[' => '「', '#]' => '」', '#,' => '、', '#.' => '。', '#/' => '・',
}
attr_reader :tokens, :text
def initialize(text)
@tokens = []
@text = text
end
def transliterate_from_hrkt_to_latn
@text = transliterate_from_kana_to_hira
transliterate_from_hira_to_latn
end
def transliterate_from_hira_to_latn
# Hepburn style romaji
kana = @text.dup
romaji = ''
geminate = false
while kana.length > 0
[2, 1].each do |length|
mora = ''
for_conversion = kana[0, length]
if for_conversion == H_SMALL_TSU
geminate = true
kana[0, length] = ''
break
elsif for_conversion == H_SYLLABIC_N && kana[1, 1].match(/[やゆよ]/)
# Syllabic N before ya, yu or yo
mora = "n'"
elsif HIRA_TO_LATN[for_conversion]
# Generic cases
mora = HIRA_TO_LATN[for_conversion]
end
if mora.length > 0
if geminate
geminate = false
romaji << mora[0, 1]
end
romaji << mora
kana[0, length] = ''
break
elsif length == 1
# Nothing found
romaji << for_conversion
kana[0, length] = ''
end
end
end
return romaji
end
def transliterate_from_latn_to_hrkt
romaji = @text.dup
kana = ''
romaji.gsub!(/m([BbPp])/, 'n\1')
romaji.gsub!(/M([BbPp])/, 'N\1')
while romaji.length > 0
[3, 2, 1].each do |length|
mora = ''
for_removal = length
for_conversion = romaji[0, length]
is_upper = !!(for_conversion.match(/^\p{Upper}/))
for_conversion.downcase!
if for_conversion.match(/nn[aiueo]/)
# nna should kanafy to んな instead of んあ
# This is what people expect for words like konna, anna, zannen
mora = H_SYLLABIC_N
for_removal = 1
elsif LATN_TO_HIRA[for_conversion]
# Generic cases
mora = LATN_TO_HIRA[for_conversion]
elsif for_conversion == 'tch' || ( length == 2 && for_conversion.match(/([kgsztdnbpmyrlwchf])\1/))
# tch and double-consonants for small tsu
mora = H_SMALL_TSU
for_removal = 1
end
if mora.length > 0
if is_upper
# Dance so we can call transliterate_from_hira_to_kana on internal data
# TODO: Need a better way for this
temp_text = @text
@text = mora.dup
kana << transliterate_from_hira_to_kana
@text = temp_text
else
kana << mora
end
romaji[0, for_removal] = ''
break
elsif length == 1
# Nothing found
kana << for_conversion
romaji[0, 1] = ''
end
end
end
return kana
end
def transliterate_from_kana_to_hira
transpose_codepoints_in_range(@text, -96, 12449..12534)
end
def transliterate_from_hira_to_kana
transpose_codepoints_in_range(@text, 96, 12353..12438)
end
def transliterate_from_fullwidth_to_halfwidth
res = transpose_codepoints_in_range(@text, -65248, 65281..65374)
transpose_codepoints_in_range(res, -12256, 12288..12288)
end
def transliterate_from_halfwidth_to_fullwidth
res = transpose_codepoints_in_range(@text, 65248, 33..126)
transpose_codepoints_in_range(res, 12256, 32..32)
end
private
def transpose_codepoints_in_range(text, distance, range)
result = ''
text.each_codepoint do |c|
if c >= range.first and c <= range.last
result << (c + distance).chr(Encoding::UTF_8)
else
result << c.chr(Encoding::UTF_8)
end
end
return result
end
end
end
end
Ve::Manager.register(Ve::Provider::JapaneseTransliterators, :ja)