Class: GrpcKit::Transport::Packable::Unpacker

Inherits:
Object
  • Object
show all
Defined in:
lib/grpc_kit/transport/packable.rb

Constant Summary collapse

METADATA_SIZE =

Compressed bytes(1 Byte) + length bytes(4 Bytes)

5

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Unpacker

Returns a new instance of Unpacker.



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# File 'lib/grpc_kit/transport/packable.rb', line 30

def initialize
  @data = +''.b
end

Instance Method Details

#data_exist? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/grpc_kit/transport/packable.rb', line 35

def data_exist?
  !@data.empty?
end

#feed(data) ⇒ void

This method returns an undefined value.

Parameters:

  • data (String) 


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# File 'lib/grpc_kit/transport/packable.rb', line 41

def feed(data)
  @data << data
end

#read ⇒ nil, Array<Boolean, Integer, String>

Returns:

  • (nil, Array<Boolean, Integer, String>) 


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# File 'lib/grpc_kit/transport/packable.rb', line 46

def read
  return nil if @data.empty?

  d = @data.freeze
  metadata = d.byteslice(0, METADATA_SIZE)
  c, size = metadata.unpack('CN')
  data = @data.byteslice(METADATA_SIZE, size)
  @data = @data.byteslice(METADATA_SIZE + size, @data.bytesize)
  [c != 0, size, data]
end