Class: XmlUtils::Formatters::Default

Inherits:
Object
  • Object
show all
Defined in:
lib/xmlutils/formatters.rb

Direct Known Subclasses

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Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(compact = false) ⇒ Default

Returns a new instance of Default.



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# File 'lib/xmlutils/formatters.rb', line 23

def initialize(compact = false)
  @compact = compact
end

Instance Attribute Details

#compact ⇒ Object

Returns the value of attribute compact.



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# File 'lib/xmlutils/formatters.rb', line 21

def compact
  @compact
end

Instance Method Details

#write(node, output = $stdout) ⇒ Object 



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# File 'lib/xmlutils/formatters.rb', line 27

def write(node, output = $stdout)
  case node
  when Document
    node.children.each_with_index do |child, idx|
      write(child, output)
      output << "\n" unless idx == node.children.length - 1
    end
  when Element
    write_element(node, output, 0)
  when Text
    output << node.to_s
  when CData
    output << node.to_s
  when Comment
    output << node.to_s
  when ProcessingInstruction
    output << node.to_s
  when XMLDecl
    output << node.to_s
  when DocType
    output << node.to_s
  end
end

#write_element(node, output, indent = 0) ⇒ Object 



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# File 'lib/xmlutils/formatters.rb', line 51

def write_element(node, output, indent = 0)
  output << '  ' * indent
  output << "<#{node.name}"
  node.attributes.each_value do |attr|
    output << " #{attr.to_string}"
  end

  if node.children.empty?
    output << " />"
  else
    output << ">"
    has_only_text = node.children.all? { |c| c.is_a?(Text) || c.is_a?(CData) }
    if has_only_text
      node.children.each { |c| write(c, output) }
    else
      output << "\n"
      node.children.each do |c|
        write(c, output) if c.is_a?(Text) && c.to_s.strip.empty?
        next if c.is_a?(Text) && c.to_s.strip.empty?
        if c.is_a?(Element)
          write_element(c, output, indent + 1)
        else
          output << '  ' * (indent + 1)
          write(c, output)
        end
        output << "\n"
      end
      output << '  ' * indent
    end
    output << "</#{node.name}>"
  end
end