lib/hrr_rb_ssh/data_types/byte.rb
module HrrRbSsh
class DataTypes
# Byte provides methods to convert integer value and 8-bit unsigned binary string each other.
class Byte < DataTypes
# Convert integer value into 8-bit unsigned binary string.
#
# @param [::Integer] arg integer value to be converted
# @raise [::ArgumentError] when arg is not between 0x00 and 0xff
# @return [::String] converted 8-bit unsigned binary string
def self.encode arg
case arg
when 0x00..0xff
[arg].pack("C")
else
raise ArgumentError, "must be in #{0x00}..#{0xff}, but got #{arg.inspect}"
end
end
# Convert 8-bit unsigned binary into Integer value.
#
# @param [::IO] io IO instance that has buffer to be read
# @return [::Integer] converted integer value
def self.decode io
io.read(1).unpack("C")[0]
end
end
end
end