Class: Takumi::Packet::Varint

Inherits:
Object
  • Object
show all
Defined in:
lib/takumi/packet/varint.rb

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(int) ⇒ Varint

Returns a new instance of Varint.



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# File 'lib/takumi/packet/varint.rb', line 17

def initialize(int)
  @int = int
end

Class Method Details

.decode(source) ⇒ Object 



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# File 'lib/takumi/packet/varint.rb', line 5

def decode(source)
  int = 0
  source.chars.each.with_index(1) do |char, index|
    byte = char.ord
    int <<= 7
    int += byte & 0b111_1111

    return int, index if (byte & 0b1000_0000).zero?
  end
end

Instance Method Details

#to_s ⇒ Object 



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# File 'lib/takumi/packet/varint.rb', line 21

def to_s
  packet = "".encode(Encoding::BINARY)
  int = @int
  loop do
    bits = int & 0b111_1111
    int = int >> 7

    if int.zero?
      packet << bits.chr and break
    else
      packet << (bits | 0b1000_0000).chr
    end
  end
  packet
end