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require 'csshttprequest'
module Rack
# A Rack middleware for providing CSSHTTPRequest responses.
class CSSHTTPRequest
def initialize(app)
@app = app
end
# Proxies the request to the application then encodes the response with
# the CSSHTTPRequest encoder
def call(env)
status, headers, response = @app.call(env)
if chr_request?(env)
response = encode(response)
modify_headers!(headers, response)
end
[status, headers, response]
end
def chr_request?(env)
env['csshttprequest.chr'] ||=
!(/\.chr$/.match(env['PATH_INFO'])).nil? || Rack::Request.new(env).params['_format'] == 'chr'
end
def encode(response, assembled_body="")
response.each { |s| assembled_body << s.to_s } # call down the stack
return ::CSSHTTPRequest.encode(assembled_body)
end
def modify_headers!(headers, encoded_response)
headers['Content-Length'] = encoded_response.length.to_s
headers['Content-Type'] = 'text/css'
nil
end
end
end