asciidoctor-foodogsquared-extensions/lib/asciidoctor/man-inline-macro/extension.rb

# frozen_string_literal: true

class ManInlineMacro < Asciidoctor::Extensions::InlineMacroProcessor
  use_dsl

  named :man
  name_positional_attributes 'volnum'
  default_attributes 'service' => 'debian', 'subpath' => ''

  def process(parent, target, attrs)
    doc = parent.document
    manname = target

    text = %(#{manname}(#{attrs['volnum']}))

    if doc.basebackend? 'html'
      domain = case attrs['service']
               when 'debian'
                 'https://manpages.debian.org'
               when 'ubuntu'
                 'https://manpages.ubuntu.org'
               when 'arch'
                 'https://man.archlinux.org/man'
               when 'opensuse'
                 'https://manpages.opensuse.org'
               when 'voidlinux'
                 'https://man.voidlinux.org'
               when 'openbsd'
                 'https://man.openbsd.org'
               when 'none'
                 nil
               else
                 raise "no available manpage service #{attrs['service']}"
               end

      if !domain.nil?
        target = %(#{domain}/#{attrs['subpath'].delete_prefix '/'}#{manname}.#{attrs['volnum']})
        doc.register :links, target
        node = create_anchor parent, text, type: :link, target: target
      else
        node = create_inline parent, :quoted, text
      end
    elsif doc.backend == 'manpage'
      node = create_inline parent, :quoted, text, type: :strong
    else
      node = create_inline parent, :quoted, text
    end

    node
  end
end