Method: AMQ::Protocol::Basic.decode_properties

Defined in:

lib/amq/protocol/client.rb

.decode_properties(data) ⇒ Object

# File 'lib/amq/protocol/client.rb', line 1572

def self.decode_properties(data)
  offset, data_length, properties = 0, data.bytesize, {}

  compressed_index = data[offset, 2].unpack(PACK_UINT16)[0]
  offset += 2
  while data_length > offset
    DECODE_PROPERTIES_KEYS.each do |key|
      next unless compressed_index >= key
      compressed_index -= key
      name = DECODE_PROPERTIES[key] || raise(RuntimeError.new("No property found for index #{index.inspect}!"))
      case DECODE_PROPERTIES_TYPE[key]
      when :shortstr
        size = data[offset, 1].unpack(PACK_CHAR)[0]
        offset += 1
        result = data[offset, size]
      when :octet
        size = 1
        result = data[offset, size].unpack(PACK_CHAR).first
      when :timestamp
        size = 8
        result = Time.at(data[offset, size].unpack(PACK_UINT64_BE).last)
      when :table
        size = 4 + data[offset, 4].unpack(PACK_UINT32)[0]
        result = Table.decode(data[offset, size])
      end
      properties[name] = result
      offset += size
    end
  end

  properties
end