Class: Hawkins::Commands::LiveServe::BodyProcessor

Inherits:
Object
  • Object
show all
Defined in:
lib/hawkins/servlet.rb

Constant Summary collapse

HEAD_TAG_REGEX = 
/<head>|<head[^(er)][^<]*>/

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(body, options) ⇒ BodyProcessor

Returns a new instance of BodyProcessor.



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# File 'lib/hawkins/servlet.rb', line 46

def initialize(body, options)
  @body = body
  @options = options
  @processed = false
end

Instance Attribute Details

#content_length ⇒ Object (readonly)

Returns the value of attribute content_length.



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# File 'lib/hawkins/servlet.rb', line 44

def content_length
  @content_length
end

#livereload_added ⇒ Object (readonly)

Returns the value of attribute livereload_added.



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# File 'lib/hawkins/servlet.rb', line 44

def livereload_added
  @livereload_added
end

#new_body ⇒ Object (readonly)

Returns the value of attribute new_body.



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# File 'lib/hawkins/servlet.rb', line 44

def new_body
  @new_body
end

Instance Method Details

#livereload_args ⇒ Object 



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# File 'lib/hawkins/servlet.rb', line 121

def livereload_args
  src = ''
  # XHTML standard requires ampersands to be encoded as entities when in attributes
  # See http://stackoverflow.com/a/2190292
  src << "&amp;mindelay=#{@options['min_delay']}" if @options["min_delay"]
  src << "&amp;maxdelay=#{@options['max_delay']}" if @options["max_delay"]
  src << "&amp;port=#{@options['reload_port']}" if @options["reload_port"]
  src
end

#process! ⇒ Object 



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# File 'lib/hawkins/servlet.rb', line 60

def process!
  # @body will usually be a File object but Strings occur in rare cases
  # that occur for reasons unknown to me.
  @new_body = []
  if @body.respond_to?(:each)
    begin
      @body.each { |line| @new_body << line.to_s }
    ensure
      @body.close
    end
  else
    @new_body = @body.lines
  end

  @content_length = 0
  @livereload_added = false

  @new_body.each do |line|
    if !@livereload_added && line['<head']
      line.gsub!(HEAD_TAG_REGEX) { |match| %(#{match}#{template.result(binding)}) }

      @livereload_added = true
    end

    @content_length += line.bytesize
    @processed = true
  end
  @new_body = @new_body.join
end

#processed? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/hawkins/servlet.rb', line 56

def processed?
  @processed
end

#template ⇒ Object 



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# File 'lib/hawkins/servlet.rb', line 90

def template
  # Unclear what "snipver" does. Doc at
  # https://github.com/livereload/livereload-js states that the recommended
  # setting is 1.

  # Complicated JavaScript to ensure that livereload.js is loaded from the
  # same origin as the page.  Mostly useful for dealing with the browser's
  # distinction between 'localhost' and 127.0.0.1

  # Use 'src="//..."' to mirror the protocol used to load the page itself.
  template = <<-TEMPLATE
  <% if with_swf? %>
    <script type="text/javascript">
      WEB_SOCKET_SWF_LOCATION = "<%= @options["baseurl"] %>/__livereload/WebSocketMain.swf";
      WEB_SOCKET_FORCE_FLASH = false;
    </script>
    <script type="text/javascript" src="<%= @options["baseurl"] %>/__livereload/swfobject.js"></script>
    <script type="text/javascript" src="<%= @options["baseurl"] %>/__livereload/web_socket.js"></script>
  <% end %>
  <script>
    document.write(
      '<script src="//' +
      (location.host || 'localhost').split(':')[0] +
      ':<%=@options["reload_port"] %>/livereload.js?snipver=1<%= livereload_args %>"' +
      '></' +
      'script>');
  </script>
  TEMPLATE
  ERB.new(Jekyll::Utils.strip_heredoc(template))
end

#with_swf? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/hawkins/servlet.rb', line 52

def with_swf?
  @options["swf"]
end