jekyll/jekyll-assets

# Frozen-string-literal: true
# Copyright: 2012 - 2020 - ISC License
# Author: Jordon Bedwell
# Encoding: utf-8

module Jekyll
  module Assets
    class Default
      class Img < Default
        content_types %r@^image/(?!x-icon$)[a-zA-Z0-9\-_+]+$@
        internal!

        # --
        def set_width
          unless args.key?(:width) || !config[:width]
            args[:width] = "100%"
          end
        end

        # --
        def set_height
          unless args.key?(:height) || !config[:height]
            args[:height] = "auto"
          end
        end

        # --
        def set_src
          d_path = asset.digest_path
          return args[:src] = asset.url if asset.is_a?(Url)
          return args[:src] = env.prefix_url(d_path) unless args[:inline]
          args[:src] = asset.data_uri
        end

        # --
        def set_integrity
          return unless integrity?
          args[:integrity] = asset.integrity
          unless args.key?(:crossorigin)
            args.update(
              crossorigin: 'anonymous'
            )
          end
        end

        # --
        def integrity?
          config[:integrity] && !asset.is_a?(Url) &&
            !args.key?(
              :integrity
            )
        end
      end
    end
  end
end

# --
Jekyll::Assets::Hook.register :config, :before_merge do |c|
  c.deep_merge!({
    defaults: {
      img: {
        height: false,
        integrity: Jekyll.production?,
        width: false,
      },
    },
  })
end