Class: SimpleHasher
- Inherits:
-
Object
- Object
- SimpleHasher
- Defined in:
- lib/simplehasher.rb,
lib/simplehasher/version.rb
Constant Summary collapse
- ALLOWED_CHARS =
"CLK0oXklU2d6RvTrS1aDBx9GfN3e7FnQOtsmPi85MYq4AWHbZIuwJEgjVhpzyc"
- VERSION =
"0.0.4"
Class Method Summary collapse
Class Method Details
.decode(hash) ⇒ Object
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# File 'lib/simplehasher.rb', line 15 def self.decode(hash) length = ALLOWED_CHARS.length size = hash.length - 1 array = hash.split('') id = ALLOWED_CHARS.index(array.pop) i = 0 array.each do |c| id += ALLOWED_CHARS.index(c) * (length ** (size - i)) i += 1 end id end |
.encode(id) ⇒ Object
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# File 'lib/simplehasher.rb', line 4 def self.encode(id) length = ALLOWED_CHARS.length while id > length -1 hash = ALLOWED_CHARS[id % length,1].concat( hash || "" ) id = (id / length).floor end ALLOWED_CHARS[id,1].concat(hash || "") end |