class HrrRbSsh::DataType::Uint64

Uint64 provides methods to convert integer value and 64-bit unsigned binary string each other.

Public Class Methods

decode(io) click to toggle source

Convert 64-bit unsigned binary into Integer value.

@param [::IO] io IO instance that has buffer to be read @return [::Integer] converted integer value

# File lib/hrr_rb_ssh/data_type/uint64.rb, line 26
def self.decode io
  (io.read(4).unpack("N")[0] << 32) + (io.read(4).unpack("N")[0])
end
encode(arg) click to toggle source

Convert integer value into 64-bit unsigned binary string.

@param [::Integer] arg integer value to be converted @raise [::ArgumentError] when arg is not between 0x0000_0000_0000_0000 and 0xffff_ffff_ffff_ffff @return [::String] converted 64-bit unsigned binary string

# File lib/hrr_rb_ssh/data_type/uint64.rb, line 13
def self.encode arg
  case arg
  when 0x0000_0000_0000_0000..0xffff_ffff_ffff_ffff
    [arg >> 32].pack("N") + [arg & 0x0000_0000_ffff_ffff].pack("N")
  else
    raise ArgumentError, "must be in #{0x0000_0000_0000_0000}..#{0xffff_ffff_ffff_ffff}, but got #{arg.inspect}"
  end
end