Class: DslBuilder

Inherits:
Object
  • Object
show all
Defined in:
lib/roundtrip_xml/dsl_builder.rb

Instance Method Summary collapse

Constructor Details

#initialize(xmlStr, runtime, root_class) ⇒ DslBuilder

Returns a new instance of DslBuilder.



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# File 'lib/roundtrip_xml/dsl_builder.rb', line 4

def initialize(xmlStr, runtime, root_class)
  @doc = Nokogiri::XML(xmlStr)
  @runtime = runtime
  @root_class = root_class
end

Instance Method Details

#to_dsl ⇒ Object 



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# File 'lib/roundtrip_xml/dsl_builder.rb', line 10

def to_dsl
  write_attrs @runtime.fetch(@root_class), @doc.root
end

#write_attrs(clazz, xml, inset = '') ⇒ Object 



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# File 'lib/roundtrip_xml/dsl_builder.rb', line 14

def write_attrs(clazz, xml, inset='')
  clazz.roxml_attrs.inject('') do |out, attr|
    # if no xml was found for the given selector, the attribute was optional
    return '' unless xml
    accessor = attr.accessor
    selector = attr.name

    if attr.sought_type == :text
      text_element = xml.children.find {|c| c.name == selector}
      out += inset + "#{accessor} '#{text_element.content}'\n" if text_element
    elsif attr.sought_type == :attr
      child_attribute = xml.attributes[selector]
      out += inset + "#{accessor} '#{child_attribute.content}'\n" if child_attribute
    elsif !attr.array?
      # the element that matches `selector` may not be in this node
      child_element = xml.children.find {|c| c.name == selector}
      if child_element
        out += inset + "#{accessor} do\n#{write_attrs attr.sought_type, child_element, inset + '  '}#{inset}end\n"
      end
    else
      xml.xpath(selector).each do |node|
        out += inset + "#{accessor} do\n#{write_attrs attr.sought_type, node, inset + '  '}#{inset}end\n"
        if inset == ''
          out += "\n"
        end
      end
    end

    out
  end
end