vendor/rails/activesupport/lib/active_support/base64.rb

   1 begin
   2   require 'base64'
   3 rescue LoadError
   4 end
   5
   6 module ActiveSupport
   7   if defined? ::Base64
   8     Base64 = ::Base64
   9   else
  10     # Base64 provides utility methods for encoding and de-coding binary data
  11     # using a base 64 representation. A base 64 representation of binary data
  12     # consists entirely of printable US-ASCII characters. The Base64 module
  13     # is included in Ruby 1.8, but has been removed in Ruby 1.9.
  14     module Base64
  15       # Encodes a string to its base 64 representation. Each 60 characters of
  16       # output is separated by a newline character.
  17       #
  18       #  ActiveSupport::Base64.encode64("Original unencoded string")
  19       #  # => "T3JpZ2luYWwgdW5lbmNvZGVkIHN0cmluZw==\n"
  20       def self.encode64(data)
  21         [data].pack("m")
  22       end
  23
  24       # Decodes a base 64 encoded string to its original representation.
  25       #
  26       #  ActiveSupport::Base64.decode64("T3JpZ2luYWwgdW5lbmNvZGVkIHN0cmluZw==")
  27       #  # => "Original unencoded string"
  28       def self.decode64(data)
  29         data.unpack("m").first
  30       end
  31     end
  32   end
  33 end