Class: Stark::Rack::Metadata::RewindableInput

Inherits:
Object
  • Object
show all
Defined in:
lib/stark/rack/metadata.rb

Instance Method Summary collapse

Constructor Details

#initialize(io) ⇒ RewindableInput

Returns a new instance of RewindableInput.



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# File 'lib/stark/rack/metadata.rb', line 59

def initialize(io)
  @io = io
  @buffered = StringIO.new
end

Instance Method Details

#read(n) ⇒ Object 



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# File 'lib/stark/rack/metadata.rb', line 64

def read(n)
  if @io
    @io.read(n).tap do |s|
      if s
        @buffered.write s
      else
        @io.close
        @io = nil
      end
    end
  else
    @buffered.read(n)
  end
end

#rewind ⇒ Object 



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# File 'lib/stark/rack/metadata.rb', line 79

def rewind
  if @io
    @io = CompositeReadIO.new([StringIO.new(@buffered.string), @io])
    @buffered = StringIO.new
  else
    @buffered.rewind
  end
end