class HTTP::Response::Body

A streamable response body, also easily converted into a string

def each

Iterate over the body, allowing it to be enumerable 
def each
  while (chunk = readpartial)
    yield chunk
  end
end

def find_encoding(encoding)

Retrieve encoding by name. If encoding cannot be found, default to binary. 
def find_encoding(encoding)
  Encoding.find encoding
rescue ArgumentError
  Encoding::BINARY
end

def initialize(stream, encoding: Encoding::BINARY) 

def initialize(stream, encoding: Encoding::BINARY)
  @stream     = stream
  @connection = stream.is_a?(Inflater) ? stream.connection : stream
  @streaming  = nil
  @contents   = nil
  @encoding   = find_encoding(encoding)
end

def inspect

Easier to interpret string inspect 
def inspect
  "#<#{self.class}:#{object_id.to_s(16)} @streaming=#{!!@streaming}>"
end

def readpartial(*args)

(see HTTP::Client#readpartial) 
def readpartial(*args)
  stream!
  chunk = @stream.readpartial(*args)
  String.new(chunk, :encoding => @encoding) if chunk
end

def stream!

Assert that the body is actively being streamed 
def stream!
  raise StateError, "body has already been consumed" if @streaming == false
  @streaming = true
end

def to_s

Returns:
  • (String) - eagerly consume the entire body as a string 
def to_s
  return @contents if @contents
  raise StateError, "body is being streamed" unless @streaming.nil?
  begin
    @streaming  = false
    @contents   = String.new("", :encoding => @encoding)
    while (chunk = @stream.readpartial)
      @contents << String.new(chunk, :encoding => @encoding)
      chunk = nil # deallocate string
    end
  rescue
    @contents = nil
    raise
  end
  @contents
end