class ActiveSupport::XmlMini_LibXMLSAX::HashBuilder

is being parsed using SAX events.
Class that will build the hash while the XML document

def current_hash 

def current_hash
  @hash_stack.last
end

def on_characters(string) 

def on_characters(string)
  current_hash[CONTENT_KEY] << string
end

def on_end_document 

def on_end_document
  @hash = @hash_stack.pop
  @hash.delete(CONTENT_KEY)
end

def on_end_element(name) 

def on_end_element(name)
  if current_hash.length > current_hash.delete(HASH_SIZE_KEY) && current_hash[CONTENT_KEY].blank? || current_hash[CONTENT_KEY] == ""
    current_hash.delete(CONTENT_KEY)
  end
  @hash_stack.pop
end

def on_start_document 

def on_start_document
  @hash = { CONTENT_KEY => +"" }
  @hash_stack = [@hash]
end

def on_start_element(name, attrs = {}) 

def on_start_element(name, attrs = {})
  new_hash = { CONTENT_KEY => +"" }.merge!(attrs)
  new_hash[HASH_SIZE_KEY] = new_hash.size + 1
  case current_hash[name]
  when Array then current_hash[name] << new_hash
  when Hash  then current_hash[name] = [current_hash[name], new_hash]
  when nil   then current_hash[name] = new_hash
  end
  @hash_stack.push(new_hash)
end