30 lines
771 B
Ruby
30 lines
771 B
Ruby
require 'rack/utils'
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module Rack
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# Sets the Content-Length header on responses with fixed-length bodies.
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class ContentLength
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include Rack::Utils
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def initialize(app)
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@app = app
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end
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def call(env)
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status, headers, body = @app.call(env)
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headers = HeaderHash.new(headers)
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if !STATUS_WITH_NO_ENTITY_BODY.include?(status.to_i) &&
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!headers['Content-Length'] &&
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!headers['Transfer-Encoding'] &&
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(body.respond_to?(:to_ary) || body.respond_to?(:to_str))
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body = [body] if body.respond_to?(:to_str) # rack 0.4 compat
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length = body.to_ary.inject(0) { |len, part| len + bytesize(part) }
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headers['Content-Length'] = length.to_s
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end
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[status, headers, body]
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end
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end
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end
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