Transliterate russian dictionary names, protect against not allowed f…

…ile names

dsl2txt.rb

@@ -4,6 +4,7 @@
 require File.expand_path('../lib/Dictionary', __FILE__)
 require File.expand_path('../lib/Card', __FILE__)
 require File.expand_path('../lib/TxtDictionary', __FILE__)
+require File.expand_path('../lib/transliteration', __FILE__)
 
 $IN = ""
 $OUT = ""

lib/TxtDictionary.rb

@@ -28,6 +28,6 @@ def print_out(out_name)
   end
 
   def desc_to_filename
-    @desc.gsub('"', '').gsub(/\s\\#/, '_')
+    Russian::Transliteration.transliterate(@desc.gsub('"', '').gsub(/[\s\\\/\*\?"\|<>#:]+/, '_'))
   end
 end

lib/transliteration.rb

@@ -0,0 +1,72 @@
+# -*- encoding: utf-8 -*- 
+
+module Russian
+  # Russian transliteration 
+  #
+  # Транслитерация для букв русского алфавита
+  module Transliteration
+    extend self
+
+    # Transliteration heavily based on rutils gem by Julian "julik" Tarkhanov and Co.
+    # <http://rutils.rubyforge.org/>
+    # Cleaned up and optimized.
+
+    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_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
+
+    # Transliterate a string with russian characters
+    #
+    # Возвращает строку, в которой все буквы русского алфавита заменены на похожую по звучанию латиницу
+    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
+  end
+end