Class: Moxml::Adapter::CustomizedRexml::Formatter

Inherits:
REXML::Formatters::Pretty
  • Object
show all
Defined in:
lib/moxml/adapter/customized_rexml/formatter.rb

Overview

Custom REXML formatter that fixes indentation and wrapping issues

Instance Method Summary collapse

Constructor Details

#initialize(indentation: 2, self_close_empty: false, adapter: nil) ⇒ Formatter

Returns a new instance of Formatter.



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# File 'lib/moxml/adapter/customized_rexml/formatter.rb', line 10

def initialize(indentation: 2, self_close_empty: false, adapter: nil)
  @indentation = " " * indentation
  @level = 0
  @compact = true
  @width = -1 # Disable line wrapping
  @self_close_empty = self_close_empty
  @adapter = adapter
end

Instance Method Details

#escape_text(text) ⇒ Object 



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# File 'lib/moxml/adapter/customized_rexml/formatter.rb', line 109

def escape_text(text)
  text.to_s.gsub(/[<>&]/) do |match|
    case match
    when "<" then "&lt;"
    when ">" then "&gt;"
    when "&" then "&amp;"
    end
  end
end

#write(node, output) ⇒ Object 



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# File 'lib/moxml/adapter/customized_rexml/formatter.rb', line 19

def write(node, output)
  case node
  when ::REXML::XMLDecl
    write_declaration(node, output)
  when ::Moxml::Adapter::CustomizedRexml::EntityReference
    output << "&#{node.name};"
  else
    super
  end
end

#write_element(node, output) ⇒ Object 



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# File 'lib/moxml/adapter/customized_rexml/formatter.rb', line 30

def write_element(node, output)
  # output << ' ' * @level
  output << "<#{node.expanded_name}"
  write_attributes(node, output)

  # Check for entity refs stored in adapter attachments
  entity_refs = @adapter&.attachments&.get(node, :entity_refs)
  child_sequence = @adapter&.attachments&.get(node, :child_sequence)

  has_no_children = node.children.empty? && !(entity_refs && !entity_refs.empty?)

  if has_no_children && @self_close_empty
    output << "/>"
    return
  end

  output << ">"

  # Check for mixed content
  has_text = node.children.any? { |c| c.is_a?(::REXML::Text) && !c.to_s.strip.empty? }
  has_elements = node.children.any?(::REXML::Element)
  mixed = has_text && has_elements

  # Handle children based on content type
  all_children_empty = node.children.empty? && !(entity_refs && !entity_refs.empty?)
  unless all_children_empty
    @level += @indentation.length unless mixed

    if entity_refs && !entity_refs.empty? && child_sequence
      # Interleave native children with entity refs using tracked sequence
      eref_idx = 0
      native_idx = 0
      child_sequence.each do |type|
        case type
        when :native
          if native_idx < node.children.size
            child = node.children[native_idx]
            native_idx += 1
            next if child.is_a?(::REXML::Text) &&
              child.to_s.strip.empty? &&
              !(child.next_sibling.nil? && child.previous_sibling.nil?)
            write(child, output)
          end
        when :eref
          if eref_idx < entity_refs.size
            write(entity_refs[eref_idx], output)
            eref_idx += 1
          end
        end
      end
    else
      node.children.each_with_index do |child, _index|
        # Skip insignificant whitespace
        next if child.is_a?(::REXML::Text) &&
          child.to_s.strip.empty? &&
          !(child.next_sibling.nil? && child.previous_sibling.nil?)

        write(child, output)
      end
    end

    # Reset indentation for closing tag in non-mixed content
    unless mixed
      @level -= @indentation.length
      # output << ' ' * @level
    end
  end

  output << "</#{node.expanded_name}>"
  # output << "\n" unless mixed
end

#write_text(node, output) ⇒ Object 



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# File 'lib/moxml/adapter/customized_rexml/formatter.rb', line 102

def write_text(node, output)
  text = node.value
  return if text.empty?

  output << escape_text(text)
end