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# encoding: utf-8
# (c) Yaroslav Markin, Julian "julik" Tarkhanov and Co
# https://github.com/yaroslav/russian/blob/master/lib/russian/transliteration.rb
module RailsI18n
module Transliteration
module Russian
class << self
def rule
lambda do |string|
next '' unless string
chars = string.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
end
private
# use instance variables instead of constants to prevent warnings
# on re-evaling after I18n.reload!
def upper
@upper ||= begin
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_single.merge(upper_multi)).freeze
end
end
def lower
@lower ||= begin
lower_single = {
"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_single.merge(lower_multi)).freeze
end
end
def upper_multi
@upper_multi ||= { "ЬЕ"=>"IE", "ЬЁ"=>"IE" }
end
def lower_multi
@lower_multi ||= { "ье"=>"ie", "ьё"=>"ie" }
end
def multi_keys
@multi_keys ||= (lower_multi.merge(upper_multi)).keys.sort_by {|s| s.length}.reverse.freeze
end
end
end
end
end
{ :ru => {
:i18n => {
:transliterate => {
:rule => RailsI18n::Transliteration::Russian.rule }}}}
|
