2013-04-23 20:28:23 +00:00
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require 'rack/livereload'
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module Rack
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class LiveReload
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class BodyProcessor
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LIVERELOAD_JS_PATH = '/__rack/livereload.js'
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HEAD_TAG_REGEX = /<head>|<head[^(er)][^<]*>/
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LIVERELOAD_PORT = 35729
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attr_reader :content_length, :new_body, :livereload_added
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def livereload_local_uri
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"http://localhost:#{@options[:live_reload_port]}/livereload.js"
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end
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def initialize(body, options)
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@body, @options = body, options
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@options[:live_reload_port] ||= LIVERELOAD_PORT
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@processed = false
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end
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def force_swf?
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@options[:force_swf]
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end
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def with_swf?
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!@options[:no_swf]
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end
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def use_vendored?
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return @use_vendored if @use_vendored
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if @options[:source]
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@use_vendored = (@options[:source] == :vendored)
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else
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require 'net/http'
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require 'uri'
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uri = URI.parse(livereload_local_uri)
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http = Net::HTTP.new(uri.host, uri.port)
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http.read_timeout = 1
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begin
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http.send_request('GET', uri.path)
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@use_vendored = false
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rescue Timeout::Error, Errno::ECONNREFUSED, EOFError
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@use_vendored = true
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rescue => e
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$stderr.puts e.inspect
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raise e
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end
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end
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@use_vendored
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end
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def processed?
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@processed
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end
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def process!(env)
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2013-05-06 13:36:15 +00:00
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@env = env
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2013-04-23 20:28:23 +00:00
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@body.close if @body.respond_to?(:close)
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@new_body = [] ; @body.each { |line| @new_body << line.to_s }
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@content_length = 0
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@livereload_added = false
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@new_body.each do |line|
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if !@livereload_added && line['<head']
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line.gsub!(HEAD_TAG_REGEX) { |match| %{#{match}#{template.result(binding)}} }
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@livereload_added = true
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end
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@content_length += line.bytesize
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@processed = true
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end
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end
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2013-05-06 13:36:15 +00:00
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def app_root
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ENV['RAILS_RELATIVE_URL_ROOT'] || ''
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end
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def host_to_use
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(@options[:host] || @env['HTTP_HOST'] || 'localhost').gsub(%r{:.*}, '')
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end
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def template
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ERB.new(::File.read(::File.expand_path('../../../../skel/livereload.html.erb', __FILE__)))
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end
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def livereload_source
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if use_vendored?
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src = "#{app_root}#{LIVERELOAD_JS_PATH.dup}?host=#{host_to_use}"
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else
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src = livereload_local_uri.dup.gsub('localhost', host_to_use) + '?'
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end
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src << "&mindelay=#{@options[:min_delay]}" if @options[:min_delay]
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src << "&maxdelay=#{@options[:max_delay]}" if @options[:max_delay]
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src << "&port=#{@options[:port]}" if @options[:port]
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src
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end
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2013-04-23 20:28:23 +00:00
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end
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end
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end
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