class Multibases::Base16

Constants

Default

Public Class Methods

decode(packed) click to toggle source
# File lib/multibases/base16.rb, line 26
def self.decode(packed)
  packed = packed.pack('C*') if packed.is_a?(Array)

  # packed.scan(/../).map { |x| x.hex.chr }.join
  DecodedByteArray.new(Array(String(packed)).pack('H*').bytes)
end
encode(plain) click to toggle source

RFC 4648 implementation

# File lib/multibases/base16.rb, line 16
def self.encode(plain)
  plain = plain.pack('C*') if plain.is_a?(Array)

  # plain.each_byte.map do |byte| byte.to_s(16) end.join
  EncodedByteArray.new(
    plain.unpack1('H*').bytes,
    encoding: Encoding::US_ASCII
  )
end
new(alphabet, strict: false, encoding: nil) click to toggle source
# File lib/multibases/base16.rb, line 54
def initialize(alphabet, strict: false, encoding: nil)
  @table = Table.from(alphabet, strict: strict, encoding: encoding)
end

Public Instance Methods

==(other)
Alias for: eql?
decodable?(encoded) click to toggle source
# File lib/multibases/base16.rb, line 101
def decodable?(encoded)
  (encoded.uniq - @table.tr_ords).length.zero?
end
decode(encoded) click to toggle source
# File lib/multibases/base16.rb, line 69
def decode(encoded)
  return DecodedByteArray::EMPTY if encoded.empty?

  unless encoded.is_a?(Array)
    encoded = encoded.force_encoding(@table.encoding).bytes
  end

  unless decodable?(encoded)
    raise ArgumentError, "'#{encoded}' contains unknown characters'"
  end

  unless default?
    encoded = ByteArray.new(encoded).transcode(
      table_ords,
      Default.table_ords(force_strict: @table.strict?),
      encoding: Encoding::US_ASCII
    )
  end

  Multibases::Base16.decode(encoded)
end
default?() click to toggle source
# File lib/multibases/base16.rb, line 91
def default?
  eql?(Default)
end
encode(plain) click to toggle source
# File lib/multibases/base16.rb, line 58
def encode(plain)
  encoded = Multibases::Base16.encode(plain)
  return encoded if default?

  encoded.transcode(
    Default.table_ords(force_strict: @table.strict?),
    table_ords,
    encoding: @table.encoding
  )
end
eql?(other) click to toggle source
# File lib/multibases/base16.rb, line 95
def eql?(other)
  other.is_a?(Base16) && other.instance_variable_get(:@table) == @table
end
Also aliased as: ==
inspect() click to toggle source
# File lib/multibases/base16.rb, line 8
def inspect
  '[Multibases::Base16 ' \
    "alphabet=\"#{@table.alphabet}\"" \
    "#{@table.strict? ? ' strict' : ''}" \
  ']'
end
table_ords(force_strict: nil) click to toggle source
# File lib/multibases/base16.rb, line 105
def table_ords(force_strict: nil)
  @table.tr_ords(force_strict: force_strict)
end