Class: Array

Inherits:
Object
  • Object
show all
Defined in:
lib/rbor/array.rb

Instance Method Summary collapse

Instance Method Details

#cbor_deserialize ⇒ Object

Treat the object as CBOR ‘BINARY` data and deserialize it into a Ruby object.

Depending on the major type of the CBOR data, this method will return a object of one of the following types:

  • major type 0: Integer

  • major type 1: Integer

  • major type 2: String

  • major type 3: String

  • major type 4: Array

  • major type 5: Hash

  • major type 7: FalseClass, TrueClass, NilClass

Author:

  • David P. Sugar (r4gus)



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# File 'lib/rbor/array.rb', line 30

def cbor_deserialize
  raise "empty" if self.empty?
  case self[0]
  when 0x00..0x3b
    v = nil 
  
    case self[0] & 0x1f
    when 0x00..0x17
      v = self[0] & 0x1f, self[1..]
    when 0x18
      v = self[1], self[2..]
    when 0x19
      v = self[1..2].pack("C*").unpack("S>")[0], self[3..]
    when 0x1a
      v = self[1..4].pack("C*").unpack("L>")[0], self[5..]
    when 0x1b
      v = self[1..8].pack("C*").unpack("Q>")[0], self[9..]
    else
      raise "invalid additional information"
    end

    if self[0] & 1 << 5 != 0
      v[0] = -v[0] - 1
    end

    return v
  when 0x40..0x5b
    old = self[0] & 0b11100000
    self[0] &= 0x1f
    len, rem = self.cbor_deserialize
    self[0] |= old
    return String.new(rem[0..len - 1].pack('C*'), encoding: "BINARY"), rem[len..]
  when 0x60..0x7b
    old = self[0] & 0b11100000
    self[0] &= 0x1f
    len, rem = self.cbor_deserialize
    self[0] |= old
    return String.new(rem[0..len - 1].pack('C*'), encoding: "UTF-8"), rem[len..]
  when 0x80..0x9b
    old = self[0] & 0b11100000
    self[0] &= 0x1f
    len, rem = self.cbor_deserialize
    self[0] |= old
    out = []
    len.times do |n|
      obj, rem = rem.cbor_deserialize
      out.append obj
    end
    return out, rem
  when 0xa0..0xbb
    old = self[0] & 0b11100000
    self[0] &= 0x1f
    len, rem = self.cbor_deserialize
    self[0] |= old
    out = {}
    len.times do |n|
      k, rem = rem.cbor_deserialize
      v, rem = rem.cbor_deserialize
      out[k] = v
    end
    return out, rem
  when 0xf4
    return false, self[1..]
  when 0xf5
    return true, self[1..]
  when 0xf6
    return nil, self[1..]
  else
    raise "undefined major type"
  end
end

#cbor_serialize(options = {}) ⇒ String

Serialize an Array into a CBOR array.

Returns:

  • (String) —

    the object serialized to CBOR.

Author:

  • David P. Sugar (r4gus)



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# File 'lib/rbor/array.rb', line 7

def cbor_serialize(options = {})
  len = self.length.cbor_serialize.bytes
  len[0] |= 4 << 5
  out = len.pack('C*')
  self.each do |elem|
    out += elem.cbor_serialize
  end
  return out
end