sinatra-static-assets/lib/sinatra/static_assets.rb

73 lines
2.0 KiB
Ruby

gem 'sinatra', '~>0.9.2'
require 'sinatra/base'
gem 'emk-sinatra-url-for', '>=0.2.1'
require 'sinatra/url_for'
module Sinatra
module StaticAssets
# In HTML <link> and <img> 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)
"<a href='#{url_for url}'>#{desc}</a>"
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) + "</script>"
end
def extract_options(a)
opts = a.last.is_a?(::Hash) ? a.pop : {}
[a, opts]
end
end
helpers StaticAssets
end