require 'sinatra/base'
require 'sinatra/url_for'
module Sinatra
module StaticAssets
module Helpers
# 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 = {})
options[:src] = url_for(source)
tag("img", options)
end
def stylesheet_link_tag(*sources)
list, options = extract_options(sources)
list.collect { |source| stylesheet_tag(source, options) }.join("\n")
end
def javascript_script_tag(*sources)
list, options = extract_options(sources)
list.collect { |source| javascript_tag(source, options) }.join("\n")
end
alias :javascript_include_tag, :javascript_script_tag
def link_to(desc, url, options = {})
tag("a", options.merge(:href => url_for(url))) do
desc
end
end
private
def tag(name, local_options = {})
start_tag = "<#{name}#{tag_options(local_options) if local_options}"
if block_given?
content = yield
"#{start_tag}>#{content}#{name}>"
else
"#{start_tag}#{"/" if options.xhtml}>"
end
end
def tag_options(options)
unless options.empty?
attrs = []
attrs = options.map { |key, value| %(#{key}="#{Rack::Utils.escape_html(value)}") }
" #{attrs.sort * ' '}" unless attrs.empty?
end
end
def stylesheet_tag(source, options = {})
tag("link", { :type => "text/css",
:charset => "utf-8", :media => "screen", :rel => "stylesheet",
:href => url_for(source) }.merge(options))
end
def javascript_tag(source, options = {})
tag("script", { :type => "text/javascript", :charset => "utf-8",
:src => url_for(source) }.merge(options)) do
end
end
def extract_options(a)
opts = a.last.is_a?(::Hash) ? a.pop : {}
[a, opts]
end
end
def self.registered(app)
app.helpers StaticAssets::Helpers
app.disable :xhtml
end
end
register StaticAssets
end