Class: RDF::RDFa::Reader::Nokogiri::NodeProxy

Inherits:
Object
  • Object
show all
Defined in:
vendor/bundler/ruby/2.5.0/bundler/gems/rdf-rdfa-4ca5edf60ab8/lib/rdf/rdfa/reader/nokogiri.rb

Overview

Proxy class to implement uniform element accessors

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(node, parent = nil) ⇒ NodeProxy

Returns a new instance of NodeProxy



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# File 'vendor/bundler/ruby/2.5.0/bundler/gems/rdf-rdfa-4ca5edf60ab8/lib/rdf/rdfa/reader/nokogiri.rb', line 21

def initialize(node, parent = nil)
  @node = node
  @parent = parent
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(method, *args) ⇒ Object

Proxy for everything else to @node



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# File 'vendor/bundler/ruby/2.5.0/bundler/gems/rdf-rdfa-4ca5edf60ab8/lib/rdf/rdfa/reader/nokogiri.rb', line 122

def method_missing(method, *args)
  @node.send(method, *args)
end

Instance Attribute Details

#nodeObject (readonly)

Returns the value of attribute node



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# File 'vendor/bundler/ruby/2.5.0/bundler/gems/rdf-rdfa-4ca5edf60ab8/lib/rdf/rdfa/reader/nokogiri.rb', line 18

def node
  @node
end

#parentObject (readonly)

Returns the value of attribute parent



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# File 'vendor/bundler/ruby/2.5.0/bundler/gems/rdf-rdfa-4ca5edf60ab8/lib/rdf/rdfa/reader/nokogiri.rb', line 19

def parent
  @parent
end

Instance Method Details

#ancestorsObject

Ancestors of this element, in order



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# File 'vendor/bundler/ruby/2.5.0/bundler/gems/rdf-rdfa-4ca5edf60ab8/lib/rdf/rdfa/reader/nokogiri.rb', line 93

def ancestors
  @ancestors ||= parent ? parent.ancestors + [parent] : []
end

#attribute_nodesString

Inner text of an element. Decode Entities

def inner_text coder = HTMLEntities.new coder.decode(@node.inner_text) end

Returns:



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# File 'vendor/bundler/ruby/2.5.0/bundler/gems/rdf-rdfa-4ca5edf60ab8/lib/rdf/rdfa/reader/nokogiri.rb', line 106

def attribute_nodes
  @attribute_nodes ||= NodeSetProxy.new(@node.attribute_nodes, self)
end

#baseString

Return xml:base on element, if defined

Returns:



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# File 'vendor/bundler/ruby/2.5.0/bundler/gems/rdf-rdfa-4ca5edf60ab8/lib/rdf/rdfa/reader/nokogiri.rb', line 51

def base
  @node.attribute_with_ns("base", RDF::XML.to_s) || @node.attribute('xml:base')
end

#childrenNodeSetProxy

Children of this node

Returns:



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# File 'vendor/bundler/ruby/2.5.0/bundler/gems/rdf-rdfa-4ca5edf60ab8/lib/rdf/rdfa/reader/nokogiri.rb', line 88

def children
  NodeSetProxy.new(@node.children, self)
end

#display_pathObject



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# File 'vendor/bundler/ruby/2.5.0/bundler/gems/rdf-rdfa-4ca5edf60ab8/lib/rdf/rdfa/reader/nokogiri.rb', line 55

def display_path
  @display_path ||= begin
    path = []
    path << parent.display_path if parent
    path << @node.name
    case @node
    when ::Nokogiri::XML::Element then path.join("/")
    when ::Nokogiri::XML::Attr    then path.join("@")
    else path.join("?")
    end
  end
end

#languageString

Element language

From HTML5 3.2.3.3 If both the lang attribute in no namespace and the lang attribute in the XML namespace are set on an element, user agents must use the lang attribute in the XML namespace, and the lang attribute in no namespace must be ignored for the purposes of determining the element's language.

Returns:



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# File 'vendor/bundler/ruby/2.5.0/bundler/gems/rdf-rdfa-4ca5edf60ab8/lib/rdf/rdfa/reader/nokogiri.rb', line 36

def language
  language = case
  when @node.attribute_with_ns("lang", RDF::XML.to_s)
    @node.attribute_with_ns("lang", RDF::XML.to_s)
  when @node.attribute("xml:lang")
    @node.attribute("xml:lang").to_s
  when @node.attribute("lang")
    @node.attribute("lang").to_s
  end
end

#namespacesHash{String => String}

Retrieve XMLNS definitions for this element

Returns:



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# File 'vendor/bundler/ruby/2.5.0/bundler/gems/rdf-rdfa-4ca5edf60ab8/lib/rdf/rdfa/reader/nokogiri.rb', line 80

def namespaces
  @node.namespace_definitions.inject({}) {|memo, ns| memo[ns.prefix] = ns.href.to_s; memo }
end

#text_content?Array<:text, :element, :attribute>

Return true of all child elements are text

Returns:

  • (Array<:text, :element, :attribute>)


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# File 'vendor/bundler/ruby/2.5.0/bundler/gems/rdf-rdfa-4ca5edf60ab8/lib/rdf/rdfa/reader/nokogiri.rb', line 72

def text_content?
  @node.children.all? {|c| c.text?}
end

#xpath(*args) ⇒ Object



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# File 'vendor/bundler/ruby/2.5.0/bundler/gems/rdf-rdfa-4ca5edf60ab8/lib/rdf/rdfa/reader/nokogiri.rb', line 110

def xpath(*args)
  @node.xpath(*args).map do |n|
    # Get node ancestors
    parent = n.ancestors.reverse.inject(nil) do |p,node|
      NodeProxy.new(node, p)
    end
    NodeProxy.new(n, parent)
  end
end