Module: SAXMachine::SAXAbstractHandler

Included in:
SAXNokogiriHandler, SAXOgaHandler, SAXOxHandler
Defined in:
lib/sax-machine/handlers/sax_abstract_handler.rb

Defined Under Namespace

Classes: StackNode

Constant Summary collapse

NO_BUFFER = 
:no_buffer

Instance Method Summary collapse

Instance Method Details

#_characters(data) ⇒ Object 



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# File 'lib/sax-machine/handlers/sax_abstract_handler.rb', line 26

def _characters(data)
  node = stack.last

  if node.buffer == NO_BUFFER
    node.buffer = data.dup
  else
    node.buffer << data
  end
end

#_end_element(name) ⇒ Object 



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# File 'lib/sax-machine/handlers/sax_abstract_handler.rb', line 81

def _end_element(name)
  name = normalize_name(name)

  start_tag = stack[-2]
  close_tag = stack[-1]

  return unless start_tag && close_tag

  object  = start_tag.object
  element = close_tag.object
  config  = close_tag.config
  value   = close_tag.buffer

  return unless config.name == name

  unless parsed_config?(object, config)
    if (element_value_config = element_values_for(config))
      element_value_config.each { |evc| element.send(evc.setter, value) }
    end

    if config.respond_to?(:accessor)
      subconfig = sax_config_for(element)

      if econf = subconfig.element_config_for_tag(name, [])
        element.send(econf.setter, value) unless econf.value_configured?
      end

      object.send(config.accessor) << element
    else
      value = data_class_value(config.data_class, value) || element
      object.send(config.setter, value) if value != NO_BUFFER
      mark_as_parsed(object, config)
    end

    # try to set the ancestor
    if (sax_config = sax_config_for(element))
      sax_config.ancestors.each do |ancestor|
        element.send(ancestor.setter, object)
      end
    end
  end

  stack.pop
end

#_error(string) ⇒ Object 



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# File 'lib/sax-machine/handlers/sax_abstract_handler.rb', line 126

def _error(string)
  if @on_error
    @on_error.call(string)
  end
end

#_initialize(object, on_error = nil, on_warning = nil) ⇒ Object 



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# File 'lib/sax-machine/handlers/sax_abstract_handler.rb', line 19

def _initialize(object, on_error = nil, on_warning = nil)
  @stack = [ StackNode.new(object) ]
  @parsed_configs = {}
  @on_error = on_error
  @on_warning = on_warning
end

#_start_element(name, attrs = []) ⇒ Object 



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# File 'lib/sax-machine/handlers/sax_abstract_handler.rb', line 36

def _start_element(name, attrs = [])
  name   = normalize_name(name)
  node   = stack.last
  object = node.object

  sax_config = sax_config_for(object)

  if sax_config
    attrs = Hash[attrs]

    if collection_config = sax_config.collection_config(name, attrs)
      object     = collection_config.data_class.new
      sax_config = sax_config_for(object)

      stack.push(StackNode.new(object, collection_config))

      set_attributes_on(object, attrs)
    end

    sax_config.element_configs_for_attribute(name, attrs).each do |ec|
      unless parsed_config?(object, ec)
        object.send(ec.setter, ec.value_from_attrs(attrs))
        mark_as_parsed(object, ec)
      end
    end

    if !collection_config && element_config = sax_config.element_config_for_tag(name, attrs)
      new_object =
        case element_config.data_class.to_s
        when "Integer" then 0
        when "Float"   then 0.0
        when "Symbol"  then nil
        when "Time"    then Time.at(0)
        when ""        then object
        else
          element_config.data_class.new
        end

      stack.push(StackNode.new(new_object, element_config))

      set_attributes_on(new_object, attrs)
    end
  end
end

#_warning(string) ⇒ Object 



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# File 'lib/sax-machine/handlers/sax_abstract_handler.rb', line 132

def _warning(string)
  if @on_warning
    @on_warning.call(string)
  end
end

#sax_parse(xml_input) ⇒ Object

Raises:

  • (NotImplementedError) 


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# File 'lib/sax-machine/handlers/sax_abstract_handler.rb', line 15

def sax_parse(xml_input)
  raise NotImplementedError
end