Class: Shutterbug::Rackapp

Inherits:
Object
  • Object
show all
Defined in:
lib/shutterbug/rackapp.rb

Constant Summary collapse

DefaultHandlers = 
[
  Shutterbug::Handlers::ConvertHandler ,
  Shutterbug::Handlers::JsFileHandler,
  Shutterbug::Handlers::FileHandlers::PngFile,
  Shutterbug::Handlers::FileHandlers::HtmlFile
]

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(app = nil) {|@config| ... } ⇒ Rackapp

Returns a new instance of Rackapp.

Yields:

  • (@config) 


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# File 'lib/shutterbug/rackapp.rb', line 23

def initialize(app=nil, &block)
  @handlers = {}
  @config = Configuration.instance
  yield @config if block_given?
  @app = app
  add_default_handlers
  log "initialized"
end

Instance Attribute Details

#handlers ⇒ Object

Returns the value of attribute handlers.



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# File 'lib/shutterbug/rackapp.rb', line 12

def handlers
  @handlers
end

Instance Method Details

#add_default_handlers ⇒ Object 



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# File 'lib/shutterbug/rackapp.rb', line 19

def add_default_handlers
  DefaultHandlers.each { |h| add_handler(h) }
end

#add_handler(klass) ⇒ Object 



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# File 'lib/shutterbug/rackapp.rb', line 13

def add_handler(klass)
  instance = klass.new(@config)
  log "adding handler for #{instance.regex} ➙ #{klass.name}"
  self.handlers[instance.regex] = instance
end

#call(env) ⇒ Object 



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# File 'lib/shutterbug/rackapp.rb', line 32

def call env
  req      = Rack::Request.new(env)
  result   = false
  handlers.keys.each do |path_regex|
    if req.path =~ path_regex
      result = handlers[path_regex].handle(self, req, env)
    end
  end
  result || skip(env)
end

#good_response(content, type, cachable = true) ⇒ Object 



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# File 'lib/shutterbug/rackapp.rb', line 43

def good_response(content, type, cachable=true)
  headers = {}
  size = content.respond_to?(:bytesize) ? content.bytesize : content.size
  headers['Content-Length'] = size.to_s
  headers['Content-Type']   = type
  headers['Cache-Control']  = 'no-cache' unless cachable
  # content must be enumerable.
  content = [content] if content.kind_of? String
  return [200, headers, content]
end

#log(string) ⇒ Object 



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# File 'lib/shutterbug/rackapp.rb', line 54

def log(string)
  puts "★ shutterbug #{Shutterbug::VERSION} ➙ #{string}"
end

#skip(env) ⇒ Object 



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# File 'lib/shutterbug/rackapp.rb', line 58

def skip(env)
  # call the applicaiton default
  @app.call env if @app
end