require 'sinatra/base' require 'sinatra/url_for' module Sinatra module StaticAssets # In HTML and tags have no end tag. # In XHTML, on the contrary, these tags must be properly closed. # # We can choose the appropriate behaviour with +closed+ option: # # image_tag "/images/foo.png", :alt => "Foo itself", :closed => true # # The default value of +closed+ option is +false+. # def image_tag(source, options = {}) closed = options.delete(:closed) options[:src] = url_for(source) tag("img", options, closed) end def stylesheet_link_tag(*sources) list, options = extract_options(sources) closed = options.delete(:closed) list.collect { |source| stylesheet_tag(source, options, closed) }.join("\n") end def javascript_script_tag(*sources) list, options = extract_options(sources) list.collect { |source| javascript_tag(source, options) }.join("\n") end def link_to(desc, url) "#{desc}" end private def tag(name, options = {}, closed = false) "<#{name}#{tag_options(options) if options}#{closed ? " />" : ">"}" end def tag_options(options) unless options.empty? attrs = [] attrs = options.map { |key, value| %(#{key}="#{value}") } " #{attrs.sort * ' '}" unless attrs.empty? end end def stylesheet_tag(source, options, closed = false) tag("link", { :type => "text/css", :charset => "utf-8", :media => "screen", :rel => "stylesheet", :href => url_for(source) }.merge(options), closed) end def javascript_tag(source, options) tag("script", { :type => "text/javascript", :charset => "utf-8", :src => url_for(source) }.merge(options), false) + "" end def extract_options(a) opts = a.last.is_a?(::Hash) ? a.pop : {} [a, opts] end end helpers StaticAssets end