Class: Lively::Assets

Inherits:
Protocol::HTTP::Middleware
  • Object
show all
Defined in:
lib/lively/assets.rb

Constant Summary collapse

DEFAULT_CACHE_CONTROL = 
'public, max-age=3600'
DEFAULT_CONTENT_TYPES = 
{
  ".html" => "text/html",
  ".css" => "text/css",
  ".js" => "application/javascript",
  ".png" => "image/png",
  ".jpeg" => "image/jpeg",
  ".gif" => "image/gif",
}

Instance Method Summary collapse

Constructor Details

#initialize(delegate, root: Dir.pwd, content_types: DEFAULT_CONTENT_TYPES, cache_control: DEFAULT_CACHE_CONTROL) ⇒ Assets

Returns a new instance of Assets.



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# File 'lib/lively/assets.rb', line 36

def initialize(delegate, root: Dir.pwd, content_types: DEFAULT_CONTENT_TYPES, cache_control: DEFAULT_CACHE_CONTROL)
  super(delegate)
  
  @root = root
  
  @content_types = content_types
  @cache_control = cache_control
end

Instance Method Details

#call(request) ⇒ Object 



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# File 'lib/lively/assets.rb', line 70

def call(request)
  if path = expand_path(request.path)
    extension = File.extname(path)
    content_type = @content_types[extension]
    
    if path.start_with?(@root) && File.exist?(path) && content_type
      return response_for(path, content_type)
    end
  end
  
  super
end

#expand_path(path) ⇒ Object 



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# File 'lib/lively/assets.rb', line 64

def expand_path(path)
  File.realpath(File.join(@root, path))
rescue Errno::ENOENT
  nil
end

#freeze ⇒ Object 



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# File 'lib/lively/assets.rb', line 45

def freeze
  return self if frozen?
  
  @root.freeze
  @content_types.freeze
  @cache_control.freeze
  
  super
end

#response_for(path, content_type) ⇒ Object 



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# File 'lib/lively/assets.rb', line 55

def response_for(path, content_type)
  headers = [
    ['content-type', content_type],
    ['cache-control', @cache_control],
  ]
  
  return Protocol::HTTP::Response[200, headers, Protocol::HTTP::Body::File.open(path)]
end