require 'addressable/uri' # Relative Assets extension class Middleman::Extensions::RelativeAssets < ::Middleman::Extension option :exts, nil, 'List of extensions that get converted to relative paths.' option :sources, %w(.css .htm .html .xhtml), 'List of extensions that are searched for relative assets.' option :ignore, [], 'Regexes of filenames to skip converting to relative paths.' option :rewrite_ignore, [], 'Regexes of filenames to skip processing for path rewrites.' option :helpers_only, false, 'Allow only Ruby helpers to change paths.' def initialize(app, options_hash={}, &block) super return if options[:helpers_only] app.rewrite_inline_urls id: :relative_assets, url_extensions: options.exts || app.config[:asset_extensions], source_extensions: options.sources, ignore: options.ignore, rewrite_ignore: options.rewrite_ignore, proc: method(:rewrite_url) end def mark_as_relative(file_path, opts, current_resource) result = opts.dup valid_exts = options.sources return result unless current_resource return result unless valid_exts.include?(current_resource.ext) rewrite_ignores = Array(options.rewrite_ignore || []) path = current_resource.destination_path return result if rewrite_ignores.any? do |i| ::Middleman::Util.path_match(i, path) || ::Middleman::Util.path_match(i, "/#{path}") end return result if Array(options.ignore || []).any? do |r| ::Middleman::Util.should_ignore?(r, file_path) end result[:relative] = true unless result.key?(:relative) result end helpers do def asset_url(path, prefix='', options={}) super(path, prefix, app.extensions[:relative_assets].mark_as_relative(super, options, current_resource)) end def asset_path(kind, source, options={}) super(kind, source, app.extensions[:relative_assets].mark_as_relative(super, options, current_resource)) end end Contract String, Or[String, Pathname], Any => Maybe[String] def rewrite_url(asset_path, dirpath, request_path) uri = ::Middleman::Util.parse_uri(asset_path) return if uri.path[0..0] != '/' relative_path = uri.host.nil? full_asset_path = if relative_path dirpath.join(asset_path).to_s else asset_path end current_dir = Pathname(request_path).dirname result = Pathname(full_asset_path).relative_path_from(current_dir).to_s result end memoize :rewrite_url end