Nokogiri

accept(visitor) Show Source

Accept visitor

# File lib/nokogiri/css/node.rb, line 16
      def accept visitor
        visitor.send(:"visit_#{type.to_s.downcase}", self)
      end

find_by_type(types) Show Source

Find a node by type using types

# File lib/nokogiri/css/node.rb, line 77
      def find_by_type types
        matches = []
        matches << self if to_type == types
        @value.each do |v|
          matches += v.find_by_type(types) if v.respond_to?(:find_by_type)
        end
        matches
      end

preprocess!() Show Source

Preprocess this node tree

# File lib/nokogiri/css/node.rb, line 28
      def preprocess!
        ### Deal with nth-child
        matches = find_by_type(
          [:CONDITIONAL_SELECTOR,
            [:ELEMENT_NAME],
            [:PSEUDO_CLASS,
              [:FUNCTION]
            ]
          ]
        )
        matches.each do |match|
          if match.value[1].value[0].value[0] =~ /^nth-(last-)?child/
            tag_name = match.value[0].value.first
            match.value[0].value = ['*']
            match.value[1] = Node.new(:COMBINATOR, [
              match.value[1].value[0],
              Node.new(:FUNCTION, ['self(', tag_name])
            ])
          end
        end

        ### Deal with first-child, last-child
        matches = find_by_type(
          [:CONDITIONAL_SELECTOR,
            [:ELEMENT_NAME], [:PSEUDO_CLASS]
        ])
        matches.each do |match|
          if ['first-child', 'last-child'].include?(match.value[1].value.first)
            which = match.value[1].value.first.gsub(/-\w*$/, '')
            tag_name = match.value[0].value.first
            match.value[0].value = ['*']
            match.value[1] = Node.new(:COMBINATOR, [
              Node.new(:FUNCTION, ["#{which}("]),
              Node.new(:FUNCTION, ['self(', tag_name])
            ])
          elsif 'only-child' == match.value[1].value.first
            tag_name = match.value[0].value.first
            match.value[0].value = ['*']
            match.value[1] = Node.new(:COMBINATOR, [
              Node.new(:FUNCTION, ["#{match.value[1].value.first}("]),
              Node.new(:FUNCTION, ['self(', tag_name])
            ])
          end
        end

        self
      end

to_a() Show Source

Convert to array

# File lib/nokogiri/css/node.rb, line 94
      def to_a
        [@type] + @value.map { |n| n.respond_to?(:to_a) ? n.to_a : [n] }
      end

to_type() Show Source

Convert to_type

# File lib/nokogiri/css/node.rb, line 87
      def to_type
        [@type] + @value.map { |n|
          n.to_type if n.respond_to?(:to_type)
        }.compact
      end

to_xpath(prefix = '//', visitor = XPathVisitor.new) Show Source

Convert this CSS node to xpath with prefix using visitor

# File lib/nokogiri/css/node.rb, line 22
      def to_xpath prefix = '//', visitor = XPathVisitor.new
        self.preprocess!
        prefix + visitor.accept(self)
      end

An HTML, XML, SAX, & Reader parser with the ability to search documents via XPath or CSS3 selectors… and much more

Nokogiri 鋸

Class Nokogiri::CSS::Node inherits from Object

Attributes

Public Class Methods

Public Instance Methods