Module: Freeberry::Transliteration

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

Overview

Russian transliteration

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



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# File 'lib/freeberry/transliteration.rb', line 49

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