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module ActionController
class RewindableInput
class RewindableIO < ActiveSupport::BasicObject
def initialize(io)
@io = io
end
def read(*args)
read_original_io
@io.read(*args)
end
def rewind
read_original_io
@io.rewind
end
def string
@string
end
def method_missing(method, *args, &block)
@io.send(method, *args, &block)
end
private
def read_original_io
unless @string
@string = @io.read
@io = StringIO.new(@string)
end
end
end
def initialize(app)
@app = app
end
def call(env)
env['rack.input'] = RewindableIO.new(env['rack.input'])
@app.call(env)
end
end
end
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