Class: Asciidoctor::Diagram::TikZConverter

Inherits:
Object
  • Object
show all
Includes:
CliGenerator, DiagramConverter
Defined in:
lib/asciidoctor-diagram/tikz/converter.rb

Instance Method Summary collapse

Methods included from CliGenerator

#generate_file, #generate_file_stdout, #generate_stdin, #generate_stdin_file, #generate_stdin_stdout

Methods included from DiagramConverter

#native_scaling?, #wrap_source

Instance Method Details

#collect_options(source) ⇒ Object 



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# File 'lib/asciidoctor-diagram/tikz/converter.rb', line 16

def collect_options(source)
  {
      :preamble => source.attr('preamble') == 'true'
  }
end

#convert(source, format, options) ⇒ Object 



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# File 'lib/asciidoctor-diagram/tikz/converter.rb', line 22

def convert(source, format, options)
  latexpath = source.find_command('pdflatex')

  if format == :svg
    svgpath = source.find_command('pdf2svg')
  else
    svgpath = nil
  end

  if options[:preamble]
    preamble, body = source.to_s.split(/^~~~~$/, 2)
    unless body
      body = preamble
      preamble = ''
    end
  else
    preamble = ''
    body = source.to_s
  end

  latex = <<'END'
\documentclass[border=2bp, tikz]{standalone}
\usepackage{tikz}
END
  latex << preamble
  latex << <<'END'
\begin{document}
\begingroup
\tikzset{every picture/.style={scale=1}}
END
  latex << body
  latex << <<'END'
\endgroup
\end{document}
END

  pdf = generate_file(latexpath, 'tex', 'pdf', latex) do |tool_path, input_path, output_path|
    {
        :args => [tool_path, '-shell-escape', '-file-line-error', '-interaction=nonstopmode', '-output-directory', Platform.native_path(File.dirname(output_path)), Platform.native_path(input_path)],
        :out_file => "#{File.dirname(input_path)}/#{File.basename(input_path, '.*')}.pdf"
    }
  end

  if svgpath
    generate_file(svgpath, 'pdf', 'svg', pdf) do |tool_path, input_path, output_path|
      {
        :args => [tool_path, Platform.native_path(input_path), Platform.native_path(output_path)],
        :chdir => source.base_dir
      }
    end
  else
    pdf
  end
end

#supported_formats ⇒ Object 



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# File 'lib/asciidoctor-diagram/tikz/converter.rb', line 12

def supported_formats
  [:pdf, :svg]
end