class Protocol::HPACK::Compressor

def write_header(command)
	representation = HEADER_REPRESENTATION[command[:type]]
	
	first = @buffer.bytesize
	
	case command[:type]
	when :indexed
		write_integer(command[:name] + 1, representation[:prefix])
	when :change_table_size
		write_integer(command[:value], representation[:prefix])
	else
		if command[:name].is_a? Integer
			write_integer(command[:name] + 1, representation[:prefix])
		else
			write_integer(0, representation[:prefix])
			write_string(command[:name])
		end
		
		write_string(command[:value])
	end
	# set header representation pattern on first byte
	@buffer.setbyte(first, @buffer.getbyte(first) | representation[:pattern])
end