Class: Dalli::Protocol::Meta::KeyRegularizer

Inherits:
Object
  • Object
show all
Defined in:
lib/dalli/protocol/meta/key_regularizer.rb

Overview

The meta protocol requires that keys be ASCII only, so Unicode keys are not supported. In addition, the use of whitespace in the key is not allowed. memcached supports the use of base64 hashes for keys containing whitespace or non-ASCII characters, provided the ‘b’ flag is included in the request.

Constant Summary collapse

WHITESPACE = 
/\s/.freeze

Class Method Summary collapse

Class Method Details

.decode(encoded_key, base64_encoded) ⇒ Object 



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# File 'lib/dalli/protocol/meta/key_regularizer.rb', line 22

def self.decode(encoded_key, base64_encoded)
  return encoded_key unless base64_encoded

  strict_base64_decoded = encoded_key.unpack1('m0')
  strict_base64_decoded.force_encoding(Encoding::UTF_8)
end

.encode(key) ⇒ Object 



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# File 'lib/dalli/protocol/meta/key_regularizer.rb', line 15

def self.encode(key)
  return [key, false] if key.ascii_only? && !WHITESPACE.match(key)

  strict_base64_encoded = [key].pack('m0')
  [strict_base64_encoded, true]
end