lib/tjson/datatype/binary.rb
# frozen_string_literal: true
module TJSON
class DataType
# Base16-serialized binary data
class Binary16 < Scalar
def tag
"d16"
end
def decode(str)
raise TJSON::TypeError, "expected String, got #{str.class}: #{str.inspect}" unless str.is_a?(::String)
raise TJSON::ParseError, "base16 must be lower case: #{str.inspect}" if str =~ /[A-F]/
raise TJSON::ParseError, "invalid base16: #{str.inspect}" unless str =~ /\A[a-f0-9]*\z/
[str].pack("H*")
end
def encode(binary)
binary.unpack("H*").first
end
end
# Base32-serialized binary data
class Binary32 < Scalar
def tag
"d32"
end
def decode(str)
raise TJSON::TypeError, "expected String, got #{str.class}: #{str.inspect}" unless str.is_a?(::String)
raise TJSON::ParseError, "base32 must be lower case: #{str.inspect}" if str =~ /[A-Z]/
raise TJSON::ParseError, "padding disallowed: #{str.inspect}" if str.include?("=")
raise TJSON::ParseError, "invalid base32: #{str.inspect}" unless str =~ /\A[a-z2-7]*\z/
::Base32.decode(str.upcase).force_encoding(Encoding::BINARY)
end
def encode(binary)
Base32.encode(binary).downcase.delete("=")
end
end
# Base64-serialized binary data
class Binary64 < Scalar
def tag
"d64"
end
def decode(str)
raise TJSON::TypeError, "expected String, got #{str.class}: #{str.inspect}" unless str.is_a?(::String)
raise TJSON::ParseError, "base64url only: #{str.inspect}" if str =~ %r{\+|\/}
raise TJSON::ParseError, "padding disallowed: #{str.inspect}" if str.include?("=")
raise TJSON::ParseError, "invalid base64url: #{str.inspect}" unless str =~ /\A[A-Za-z0-9\-_]*\z/
# Add padding, as older Rubies (< 2.3) require it
str = str.ljust((str.length + 3) & ~3, "=") if (str.length % 4).nonzero?
::Base64.urlsafe_decode64(str)
end
def encode(binary)
Base64.urlsafe_encode64(binary).delete("=")
end
end
end
end