Method: Packr::Base62#encode

Defined in:
lib/packr/base62.rb

#encode(script) ⇒ Object 



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# File 'lib/packr/base62.rb', line 16

def encode(script)
  words = search(script)
  words.sort!
  
  encoded = Collection.new # a dictionary of base62 -> base10
  words.size.times { |i| encoded.put(Packr.encode62(i), i) }
  
  replacement = lambda { |word| words.get(word).replacement }
  
  index = 0
  words.each do |word, key|
    if encoded.has?(word)
      word.index = encoded.get(word)
      def word.to_s; ""; end
    else
      index += 1 while words.has?(Packr.encode62(index))
      word.index = index
      index += 1
      if word.count == 1
        def word.to_s; ""; end
      end
    end
    word.replacement = Packr.encode62(word.index)
    if word.replacement.length == word.to_s.length
      def word.to_s; ""; end
    end
  end
  
  # sort by encoding
  words.sort! { |word1, word2| word1.index - word2.index }
  
  # trim unencoded words
  words = words.slice(0, get_key_words(words).split("|").length)
  
  script = script.gsub(get_pattern(words), &replacement)
  
  # build the packed script
  
  p = escape(script)
  a = "[]"
  c = get_count(words)
  k = get_key_words(words)
  e = get_encoder(words)
  d = get_decoder(words)
  
  # the whole thing
  UNPACK.call(p,a,c,k,e,d)
end