Class: Asciidoctor::Diagram::DiagramsConverter

Inherits:
Object
  • Object
show all
Includes:
CliGenerator, DiagramConverter
Defined in:
lib/asciidoctor-diagram/diagrams/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

#collect_options, #native_scaling?, #wrap_source

Instance Method Details

#convert(source, format, options) ⇒ Object 



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# File 'lib/asciidoctor-diagram/diagrams/converter.rb', line 17

def convert(source, format, options)
  python_path = source.find_command('python3', :attrs => ['diagrams-python'], :alt_cmds => ['python'])

  code = source.to_s

  match_data = /Diagram\((.*?)\)/.match(code)
  raise "Could not find Diagram constructor" unless match_data

  args = match_data[1].strip

  target_file = Tempfile.new('diagrams')

  diagram = 'Diagram('
  diagram << args
  diagram << ',' unless args.empty?
  diagram << "filename=\"#{target_file.path}\""
  diagram << ",outformat=\"#{format}\""
  diagram << ')'

  code = match_data.pre_match + diagram + match_data.post_match

  begin
    target_file.close
    generate_stdin_file(python_path, code, target_file.path + ".#{format}") do |tool|
      [tool, '-']
    end
  ensure
    target_file.unlink
  end
end

#supported_formats ⇒ Object 



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# File 'lib/asciidoctor-diagram/diagrams/converter.rb', line 13

def supported_formats
  [:png, :svg, :pdf]
end