Class: Jekyll::Diagrams::GraphvizRenderer

Inherits:
BasicRenderer show all
Defined in:
lib/jekyll-diagrams/graphviz/renderer.rb

Constant Summary collapse

XML_REGEX = 
/^<\?xml(([^>]|\n)*>\n?){2}/.freeze
CONFIGRATIONS = 
{
  'K' => 'default_layout',
  'G' => 'graph_attributes',
  'N' => 'node_attributes',
  'E' => 'edge_attributes'
}.freeze

Instance Method Summary collapse

Methods inherited from BasicRenderer

#initialize, render, #render

Methods included from Rendering

render_with_command, render_with_stdin_stdout, render_with_tempfile

Constructor Details

This class inherits a constructor from Jekyll::Diagrams::BasicRenderer

Instance Method Details

#build_command(config) ⇒ Object 



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# File 'lib/jekyll-diagrams/graphviz/renderer.rb', line 24

def build_command(config)
  command = +'dot -Tsvg'

  CONFIGRATIONS.each do |prefix, conf|
    next unless config.key?(conf)

    command << Utils.normalized_attrs(
      config[conf],
      prefix: " -#{prefix}"
    )
  end

  command
end

#render_svg(code, config) ⇒ Object 



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# File 'lib/jekyll-diagrams/graphviz/renderer.rb', line 14

def render_svg(code, config)
  command = build_command(config)

  svg = render_with_stdin_stdout(command, code).force_encoding(
    config.fetch('encoding', 'utf-8')
  )

  svg.sub!(XML_REGEX, '')
end