class Lite::Uxid::Hashid
Public Class Methods
decode(id)
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# File lib/lite/uxid/hashid.rb, line 19 def decode(id) klass = new(id) klass.decode end
encode(id)
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# File lib/lite/uxid/hashid.rb, line 14 def encode(id) klass = new(id) klass.encode end
new(id)
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Calls superclass method
Lite::Uxid::Base::new
# File lib/lite/uxid/hashid.rb, line 7 def initialize(id) @id = id super() end
Public Instance Methods
decode()
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# File lib/lite/uxid/hashid.rb, line 30 def decode (decode_chars(@id) >> encoding_length) - encoding_salt end
encode()
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# File lib/lite/uxid/hashid.rb, line 26 def encode encode_chars((@id + encoding_salt) << encoding_length) end
Private Instance Methods
decode_chars(id)
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# File lib/lite/uxid/hashid.rb, line 50 def 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
encode_chars(id)
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# File lib/lite/uxid/hashid.rb, line 36 def 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