Class: Nokogiri::XML::Node

Inherits:
Object
  • Object
show all
Defined in:
lib/pacer-xml/nokogiri_node.rb

Instance Method Summary collapse

Instance Method Details

#attrs ⇒ Object 



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# File 'lib/pacer-xml/nokogiri_node.rb', line 105

def attrs
  if respond_to? :attributes
    attributes
  else
    {}
  end
end

#contained_rels ⇒ Object 



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# File 'lib/pacer-xml/nokogiri_node.rb', line 129

def contained_rels
  if container?
    elements.select(&:vertex?) +
      elements.select(&:container?).flat_map(&:contained_rels)
  else
    []
  end
end

#container? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/pacer-xml/nokogiri_node.rb', line 91

def container?
  not property? and
    elements.map(&:name).uniq.length == 1 and
    elements.all? { |e| e.vertex? or e.container? }
end

#description ⇒ Object 



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# File 'lib/pacer-xml/nokogiri_node.rb', line 74

def description
  s = if property?
    "property"
  elsif container?
    'container'
  elsif vertex?
    'vertex'
  else
    'other'
  end
  "#{ s } #{ name }"
end

#fields ⇒ Object 



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# File 'lib/pacer-xml/nokogiri_node.rb', line 113

def fields
  result = {}
  attrs.each do |name, attr|
    result[name] = attr.value
  end
  properties.each do |e|
    result[e.name] = e.text
  end
  result['type'] = name
  result
end

#inspect ⇒ Object 



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# File 'lib/pacer-xml/nokogiri_node.rb', line 66

def inspect
  if children.all? &:text?
    "#<Property #{ name }>"
  else
    "#<Element #{ name } [#{ elements.map(&:name).uniq.join(', ') }]>"
  end
end

#many_rels ⇒ Object 



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# File 'lib/pacer-xml/nokogiri_node.rb', line 138

def many_rels
  elements.select &:container?
end

#one_rels ⇒ Object 



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# File 'lib/pacer-xml/nokogiri_node.rb', line 125

def one_rels
  elements.select &:vertex?
end

#properties ⇒ Object 



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# File 'lib/pacer-xml/nokogiri_node.rb', line 101

def properties
  elements.select(&:property?)
end

#property? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/pacer-xml/nokogiri_node.rb', line 87

def property?
  children.all? &:text?
end

#rels_hash ⇒ Object 



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# File 'lib/pacer-xml/nokogiri_node.rb', line 142

def rels_hash
  result = Hash.new { |h, k| h[k] = [] }
  one_rels.each  { |e| result[e.name] << e }
  many_rels.each { |e| result[e.name] += e.contained_rels }
  result
end

#tree(key_map = {}) ⇒ Object 



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# File 'lib/pacer-xml/nokogiri_node.rb', line 17

def tree(key_map = {})
  c = elements.map { |x| x.tree(key_map) }.compact
  if c.empty?
    key_map.fetch(name, name)
  else
    ct = {}
    texts = []
    attrs = {}
    if respond_to? :attributes
      attrs = Hash[attributes.map { |k, a|
        k = key_map.fetch(k, k)
        [k, a.value] if k
      }.compact]
    end
    c.each do |h|
      if h.is_a? String
        texts << h
        next
      end
      h.each do |name, value|
        if ct.key? name
          if ct[name].is_a? Array
            ct[name] << value unless ct[name].include? value
          elsif ct[name] != value
            ct[name] = [ct[name], value]
          end
        else
          ct[name] = value
        end
      end
    end
    ct.merge! attrs
    key = key_map.fetch(name, name)
    if key
      if ct.empty?
        if texts.count < 2
          { key => texts.first }
        else
          { key => texts.uniq }
        end
      elsif texts.any?
        { key => ct }
      else
        { key => ct }
      end
    end
  end
end

#vertex? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/pacer-xml/nokogiri_node.rb', line 97

def vertex?
  not property? and not container?
end