Class: MaRuKu::REXMLHTMLFragment

### Home Classes Methods

### In Files

- lib/maruku/html.rb

### Parent

Object

### Methods

- ::new
- #add_class
- #first_node_name
- #process_markdown_inside_elements
- #to_html

### Class/Module Index

Quicksearch

- MaRuKu
- MaRuKu::AttributeList
- MaRuKu::Errors
- MaRuKu::Exception
- MaRuKu::HTMLElement
- MaRuKu::HTMLFragment
- MaRuKu::Helpers
- MaRuKu::In
- MaRuKu::In::Markdown
- MaRuKu::In::Markdown::BlockLevelParser
- MaRuKu::In::Markdown::BlockLevelParser::BlockContext
- MaRuKu::In::Markdown::BlockLevelParser::LineSource
- MaRuKu::In::Markdown::SpanExtension
- MaRuKu::In::Markdown::SpanLevelParser
- MaRuKu::In::Markdown::SpanLevelParser::CharSourceDebug
- MaRuKu::In::Markdown::SpanLevelParser::CharSourceManual
- MaRuKu::In::Markdown::SpanLevelParser::CharSourceStrscan
- MaRuKu::In::Markdown::SpanLevelParser::HTMLHelper
- MaRuKu::In::Markdown::SpanLevelParser::SpanContext
- MaRuKu::MDDocument
- MaRuKu::MDElement
- MaRuKu::MDHTMLElement
- MaRuKu::MDLine
- MaRuKu::NokogiriHTMLFragment
- MaRuKu::Out
- MaRuKu::Out::EntityTable
- MaRuKu::Out::HTML
- MaRuKu::Out::HTML::HTMLElement
- MaRuKu::Out::Latex
- MaRuKu::Out::Latex::MDDocumentExtensions
- MaRuKu::Out::Markdown
- MaRuKu::REXMLHTMLFragment
- MaRuKu::Section
- MaRuKu::Strings
- Maruku
- Maruku::In
- Maruku::In::Markdown
- Maruku::In::Markdown::FencedCode
- Object
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# MaRuKu::REXMLHTMLFragment

An HTMLFragment implementation using REXML

### Public Class Methods

new(raw_html) click to toggle source

    # File lib/maruku/html.rb, line 150
        def initialize(raw_html)
          wrapped = '<!DOCTYPE html PUBLIC
      "-//W3C//DTD XHTML 1.1 plus MathML 2.0 plus SVG 1.1//EN"
      "http://www.w3.org/2002/04/xhtml-math-svg/xhtml-math-svg.dtd">
    <html>' + raw_html.strip + '</html>'

          @fragment = REXML::Document.new(wrapped).root
        end

### Public Instance Methods

add_class(class_name) click to toggle source

Add a class to the children of this fragment

    # File lib/maruku/html.rb, line 166
    def add_class(class_name)
      @fragment.each_element do |c|
        c.attributes['class'] = ((c.attributes['class']||'').split(' ') + [class_name]).join(' ')
      end
    end

first_node_name() click to toggle source

The name of the first element in the fragment

    # File lib/maruku/html.rb, line 160
    def first_node_name
      first_child = @fragment.children.first
      (first_child && first_child.respond_to?(:name)) ? first_child.name : nil
    end

process_markdown_inside_elements(doc) click to toggle source

Process markdown within the contents of some elements and replace their contents with the processed version.

    # File lib/maruku/html.rb, line 174
    def process_markdown_inside_elements(doc)
      elts = []
      @fragment.each_element('//*[@markdown]') do |e|
        elts << e
      end

      d = @fragment.children.first
      if d && HTML_INLINE_ELEMS.include?(first_node_name)
        elts << d unless d.attributes['markdown']
        elts += span_descendents(d)
      end

      # find span elements or elements with 'markdown' attribute
      elts.each do |e|
        # should we parse block-level or span-level?
        how = e.attributes['markdown']
        e.attributes.delete('markdown')

        next if "0" == how # user requests no markdown parsing inside
        parse_blocks = (how == 'block') || BLOCK_TAGS.include?(e.name)

        # Select all text children of e
        e.texts.each do |original_text|
          s = MaRuKu::Out::HTML.escapeHTML(original_text.value)
          unless s.strip.empty?
            # TODO extract common functionality
            parsed = parse_blocks ? doc.parse_text_as_markdown(s) : doc.parse_span(s)
            # restore leading and trailing spaces
            padding = /\A(\s*).*?(\s*)\z/.match(s)
            parsed = [padding[1]] + parsed + [padding[2]] if padding

            el = doc.md_el(:dummy, parsed)

            new_html = "<dummy>"
            el.children_to_html.each do |x|
              new_html << x.to_s
            end
            new_html << "</dummy>"

            newdoc = REXML::Document.new(new_html).root

            p = original_text.parent
            newdoc.children.each do |c|
              p.insert_before(original_text, c)
            end

            p.delete(original_text)
          end
        end
      end
    end

to_html() click to toggle source

    # File lib/maruku/html.rb, line 226
    def to_html
      formatter = REXML::Formatters::Default.new(true)
      @fragment.children.inject("") do |out, child|
        out << formatter.write(child, '')
      end
    end

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