process_code_pane

in src/_plugins/code_excerpt_processor.rb [157:194]

• 36 lines of code
• 10 McCabe index (conditional complexity)

    def process_code_pane(pi, _attrs, args)
      # TODO: support use of globally set replace args.
      title = args['title'] || trim_file_vers(args[''])
      escaped_code = get_code_frag(args['path'],
                                   full_frag_path(args['path'], args['region']),
                                   src_path(args['path'], args['region']),
                                   args['region'])
      # args['replace'] syntax: /regex/replacement/g
      # Replacement and '_g' are currently mandatory (but not checked)
      if args['replace']
        _, re, replacement, _g = args['replace'].split '/'
        escaped_code.gsub!(Regexp.new(re)) {
          match = Regexp.last_match
          # TODO: doesn't yet recognize escaped '$' ('\$')
          while (arg_match = /(?<=\$)(\d)(?!\d)/.match(replacement)) do
            next unless arg_match
            replacement.gsub!("$#{arg_match[0]}", match[arg_match[0].to_i])
          end
          if /\$\d+|\\\$/.match?(replacement)
            raise "Plugin doesn't support \\$, or more than 9 match groups $1, ..., $9: #{replacement}.\nAborting."
          end
          if replacement.include? '$&'
            replacement.gsub('$&', match[0])
          else
            replacement
          end
        }
      end
      escaped_code = _process_highlight_markers(escaped_code)
      attrs = {}
      attrs[:language] = _attrs[:lang] if _attrs[:lang]
      attrs[:format] = _attrs[:class] if _attrs[:class]
      <<~TEMPLATE
        
        <code-pane name="#{title}" 
      TEMPLATE
    end