class Multibases::Base64
Constants
- Default
rubocop:disable Metrics/LineLength
- UrlSafe
Public Class Methods
decode(packed)
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# File lib/multibases/base64.rb, line 27 def self.decode(packed) packed = packed.pack('C*') if packed.is_a?(Array) # Base64.strict_decode64("m").first # Don't use m0, as that requires padderding _always_ DecodedByteArray.new(packed.unpack1('m').bytes) end
encode(plain)
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RFC 4648 implementation
# File lib/multibases/base64.rb, line 17 def self.encode(plain) plain = plain.pack('C*') if plain.is_a?(Array) # Base64.strict_encode(plain) EncodedByteArray.new( Array(String(plain)).pack('m0').bytes, encoding: Encoding::US_ASCII ) end
new(alphabet, strict: false, encoding: nil)
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# File lib/multibases/base64.rb, line 58 def initialize(alphabet, strict: false, encoding: nil) @table = Table.from(alphabet, strict: strict, encoding: encoding) end
Public Instance Methods
decodable?(encoded)
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# File lib/multibases/base64.rb, line 108 def decodable?(encoded) (encoded.uniq - table_ords).length.zero? end
decode(encoded)
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# File lib/multibases/base64.rb, line 76 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::Base64.decode(encoded) end
default?()
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# File lib/multibases/base64.rb, line 98 def default? eql?(Default) end
encode(plain)
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# File lib/multibases/base64.rb, line 62 def encode(plain) return EncodedByteArray::EMPTY if plain.empty? encoded = Multibases::Base64.encode(plain) encoded.chomp!(Default.table_padder) unless @table.padder return encoded if default? encoded.transcode( Default.table_ords(force_strict: @table.strict?), table_ords, encoding: @table.encoding ) end
eql?(other)
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# File lib/multibases/base64.rb, line 102 def eql?(other) other.is_a?(Base64) && other.instance_variable_get(:@table) == @table end
Also aliased as: ==
inspect()
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# File lib/multibases/base64.rb, line 9 def inspect '[Multibases::Base64 ' \ "alphabet=\"#{@table.alphabet}\"" \ "#{@table.padder.nil? ? '' : ' pad="' + @table.padder.chr + '"'}" \ ']' end
table_ords(force_strict: nil)
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# File lib/multibases/base64.rb, line 112 def table_ords(force_strict: nil) @table.tr_ords(force_strict: force_strict) end
table_padder()
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# File lib/multibases/base64.rb, line 116 def table_padder @table.padder end