Class: Protocol::HTTP::Body::Streamable

Inherits:
Wrapper show all
Defined in:
lib/protocol/http/body/streamable.rb

Overview

Invokes a callback once the body has finished reading.

Instance Attribute Summary

Attributes inherited from Wrapper

#body

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Wrapper

#empty?, #inspect, #length

Methods inherited from Readable

#each, #empty?, #join, #length

Constructor Details

#initialize(body, callback, remaining = nil) ⇒ Streamable

Returns a new instance of Streamable.



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# File 'lib/protocol/http/body/streamable.rb', line 42

def initialize(body, callback, remaining = nil)
	super(body)
	
	@callback = callback
	@remaining = remaining
end

Class Method Details

.wrap(message, &block) ⇒ Object 



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# File 'lib/protocol/http/body/streamable.rb', line 30

def self.wrap(message, &block)
	if message and body = message.body
		if remaining = body.length
			remaining = Integer(remaining)
		end
		
		message.body = self.new(message.body, block, remaining)
	else
		yield
	end
end

Instance Method Details

#close ⇒ Object 



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# File 'lib/protocol/http/body/streamable.rb', line 61

def close(*)
	if @body
		super
		
		@callback.call
		
		@body = nil
	end
end

#finish ⇒ Object 



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# File 'lib/protocol/http/body/streamable.rb', line 49

def finish
	if @body
		result = super
		
		@callback.call
		
		@body = nil
		
		return result
	end
end

#read ⇒ Object 



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# File 'lib/protocol/http/body/streamable.rb', line 71

def read
	if chunk = super
		@remaining -= chunk.bytesize if @remaining
	else
		if @remaining and @remaining > 0
			raise EOFError, "Expected #{@remaining} more bytes!"
		end
	end
	
	return chunk
end