Module: Russian::Transliteration

Extended by:
Transliteration
Included in:
Transliteration
Defined in:
lib/russian/transliteration.rb

Overview

Russian transliteration

Транслитерация для букв русского алфавита

Constant Summary collapse

LOWER_SINGLE =

Transliteration heavily based on rutils gem by Julian “julik” Tarkhanov and Co. <rutils.rubyforge.org/> Cleaned up and optimized.

{
  "і"=>"i","ґ"=>"g","ё"=>"yo","№"=>"#","є"=>"e",
  "ї"=>"yi","а"=>"a","б"=>"b",
  "в"=>"v","г"=>"g","д"=>"d","е"=>"e","ж"=>"zh",
  "з"=>"z","и"=>"i","й"=>"y","к"=>"k","л"=>"l",
  "м"=>"m","н"=>"n","о"=>"o","п"=>"p","р"=>"r",
  "с"=>"s","т"=>"t","у"=>"u","ф"=>"f","х"=>"h",
  "ц"=>"ts","ч"=>"ch","ш"=>"sh","щ"=>"sch","ъ"=>"'",
  "ы"=>"y","ь"=>"","э"=>"e","ю"=>"yu","я"=>"ya",
}
LOWER_MULTI = 
{
  "ье"=>"ie",
  "ьё"=>"ie",
}
UPPER_SINGLE = 
{
  "Ґ"=>"G","Ё"=>"YO","Є"=>"E","Ї"=>"YI","І"=>"I",
  "А"=>"A","Б"=>"B","В"=>"V","Г"=>"G",
  "Д"=>"D","Е"=>"E","Ж"=>"ZH","З"=>"Z","И"=>"I",
  "Й"=>"Y","К"=>"K","Л"=>"L","М"=>"M","Н"=>"N",
  "О"=>"O","П"=>"P","Р"=>"R","С"=>"S","Т"=>"T",
  "У"=>"U","Ф"=>"F","Х"=>"H","Ц"=>"TS","Ч"=>"CH",
  "Ш"=>"SH","Щ"=>"SCH","Ъ"=>"'","Ы"=>"Y","Ь"=>"",
  "Э"=>"E","Ю"=>"YU","Я"=>"YA",
}
UPPER_MULTI = 
{
  "ЬЕ"=>"IE",
  "ЬЁ"=>"IE",
}
LOWER = 
(LOWER_SINGLE.merge(LOWER_MULTI)).freeze
UPPER = 
(UPPER_SINGLE.merge(UPPER_MULTI)).freeze
MULTI_KEYS = 
(LOWER_MULTI.merge(UPPER_MULTI)).keys.sort_by {|s| s.length}.reverse.freeze

Instance Method Summary collapse

Instance Method Details

#transliterate(str) ⇒ Object

Transliterate a string with russian characters

Возвращает строку, в которой все буквы русского алфавита заменены на похожую по звучанию латиницу



51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
 
# File 'lib/russian/transliteration.rb', line 51

def transliterate(str)
  chars = str.scan(%r{#{MULTI_KEYS.join '|'}|\w|.})

  result = ""

  chars.each_with_index do |char, index|
    if UPPER.has_key?(char) && LOWER.has_key?(chars[index+1])
      # combined case
      result << UPPER[char].downcase.capitalize
    elsif UPPER.has_key?(char)
      result << UPPER[char]
    elsif LOWER.has_key?(char)
      result << LOWER[char]
    else
      result << char
    end
  end

  result
end