Class: ActiveUxid::Hash
Class Method Summary collapse
Instance Method Summary collapse
- #decode_uxid ⇒ Object
- #encode_uxid ⇒ Object
-
#initialize(id) ⇒ Hash
constructor
A new instance of Hash.
- #uxid_decode_chars(id) ⇒ Object
- #uxid_encode_chars(id) ⇒ Object
Methods inherited from Base
Constructor Details
#initialize(id) ⇒ Hash
Returns a new instance of Hash.
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# File 'lib/active_uxid/hash.rb', line 6 def initialize(id) @id = id super() end |
Class Method Details
.decode(id) ⇒ Object
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# File 'lib/active_uxid/hash.rb', line 16 def self.decode(id) klass = new(id) klass.decode_uxid end |
.encode(id) ⇒ Object
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# File 'lib/active_uxid/hash.rb', line 11 def self.encode(id) klass = new(id) klass.encode_uxid end |
Instance Method Details
#decode_uxid ⇒ Object
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# File 'lib/active_uxid/hash.rb', line 25 def decode_uxid (uxid_decode_chars(@id) >> encoding_length) - encoding_salt end |
#encode_uxid ⇒ Object
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# File 'lib/active_uxid/hash.rb', line 21 def encode_uxid uxid_encode_chars((@id + encoding_salt) << encoding_length) end |
#uxid_decode_chars(id) ⇒ Object
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# File 'lib/active_uxid/hash.rb', line 43 def uxid_decode_chars(id) pos = 0 num = 0 len = id.length max = len - 1 while pos < len pow = encoding_base**(max - pos) num += encoding_chars.index(id[pos]) * pow pos += 1 end num end |
#uxid_encode_chars(id) ⇒ Object
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# File 'lib/active_uxid/hash.rb', line 29 def uxid_encode_chars(id) return '0' if id.zero? return nil if id.negative? str = '' while id.positive? str = "#{encoding_chars[id % encoding_base]}#{str}" id /= encoding_base end str end |