Method: Text::Soundex.soundex_str

Defined in:
lib/flatulent/text/soundex.rb

.soundex_str(str) ⇒ Object

returns nil if the value couldn’t be calculated (empty-string, wrong-character) do not change the parameter “str”



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# File 'lib/flatulent/text/soundex.rb', line 29

def soundex_str(str)
  return nil if str.empty?

  str = str.upcase
  last_code = get_code(str[0,1])
  soundex_code = str[0,1]

  for index in 1...(str.size) do
    return soundex_code if soundex_code.size == 4

    code = get_code(str[index,1])
  
    if code == "0" then
      last_code = nil
    elsif code == nil then
      return nil
    elsif code != last_code then
      soundex_code += code
      last_code = code        
    end 
  end # for


  return soundex_code + "000"[0,4-soundex_code.size]
end