Class: TreeRb::DomWalker

Inherits:
Object
  • Object
show all
Defined in:
lib/tree_rb/input_plugins/html_page/dom_walker.rb

Instance Method Summary collapse

Constructor Details

#initialize(node) ⇒ DomWalker

Returns a new instance of DomWalker.



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# File 'lib/tree_rb/input_plugins/html_page/dom_walker.rb', line 5

def initialize(node)
  @node = node
end

Instance Method Details

#is_leaf?(node) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/tree_rb/input_plugins/html_page/dom_walker.rb', line 31

def is_leaf?(node)
  node.node_type == Nokogiri::XML::Node::TEXT_NODE
end

#process_node(node, level = 1) ⇒ Object

recurse on nodes



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# File 'lib/tree_rb/input_plugins/html_page/dom_walker.rb', line 18

def process_node(node, level=1)
  entries = node.children
  @visitor.enter_node(node)
  entries.each do |entry|
    unless is_leaf?(entry)
      process_node(entry, level+1)
    else
      @visitor.visit_leaf(entry)
    end
  end
  @visitor.exit_node(node)
end

#run(visitor) ⇒ Object 



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# File 'lib/tree_rb/input_plugins/html_page/dom_walker.rb', line 9

def run(visitor)
  @visitor = visitor
  process_node(@node)
end