Class: Gmi2LaTeX::Renderer

Inherits:
Object
  • Object
show all
Defined in:
lib/gmi2latex/renderer.rb

Instance Method Summary collapse

Constructor Details

#initialize(document, header: nil, footer: nil) ⇒ Renderer

Returns a new instance of Renderer.



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# File 'lib/gmi2latex/renderer.rb', line 5

def initialize(document, header: nil, footer: nil)
  @document = document
  @header = header
  @footer = footer
end

Instance Method Details

#end_itemize ⇒ Object 



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# File 'lib/gmi2latex/renderer.rb', line 76

def end_itemize
  @listing or return
  @listing = false
  print "\\end{itemize}\n"
end

#render ⇒ Object 



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# File 'lib/gmi2latex/renderer.rb', line 13

def render
  @header and print @header
  @document.nodes.each do |node|
    render_node(node)
  end
  end_itemize
  @footer and print @footer
end

#render_node(node) ⇒ Object 



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# File 'lib/gmi2latex/renderer.rb', line 22

def render_node(node)
  case node
  in Gemtext::Heading[content:]
    end_itemize
    print "\\section{#{content}}\n"
  in Gemtext::SubHeading[content:]
    end_itemize
    print "\\subsection{#{content}}\n"
  in Gemtext::SubSubHeading[content:]
    end_itemize
    print "\\subsubsection{#{content}}\n"
  in Gemtext::Whitespace
    end_itemize
    print "\n"
  in Gemtext::Text[content:]
    end_itemize
    content.each_char do |char|
      case char
      in "_"
        print "\\_"
      else
        print char
      end
    end
    print "\n"
  in Gemtext::Link[target:, description:]
    end_itemize
    print "#{description} (\\url{#{target}})\n"
  in Gemtext::Preformatted[content:]
    end_itemize
    print <<~LaTeX
      \\begin{verbatim}
      #{content}
      \\end{verbatim}
    LaTeX
  in Gemtext::ListItem[content:]
    if @listing
      print <<~LaTeX
        \\item{}
        #{content}
      LaTeX
    else
      print <<~LaTeX
        \\begin{itemize}
        \\item{}
        #{content}
      LaTeX
      @listing = true
    end
  else
    raise node.inspect
  end
end