Class: ScatterSwap::Hasher

Inherits:
Object
  • Object
show all
Defined in:
lib/scatter_swap/hasher.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(integer, spin = 0, length = 10) ⇒ Hasher

Construct a new Hasher.

Parameters:

  • integer (Fixnum) —

    the numeric value to be hashed/reversed.

  • spin (Fixnum) (defaults to: 0) —

    a seed value.

  • length (Fixnum) (defaults to: 10) —

    the number of digits in the computed hashes.



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# File 'lib/scatter_swap/hasher.rb', line 18

def initialize(integer, spin = 0, length = 10)
  @original_integer = integer.freeze
  @spin = (spin || 0).freeze
  @length = length.freeze
  zero_pad = integer.to_s.rjust(length, '0')
  @working_array = zero_pad.split('').collect { |d| d.to_i }
end

Instance Attribute Details

#length ⇒ Fixnum (readonly)

Returns the number of digits in the computed hashes.

Returns:

  • (Fixnum) —

    the number of digits in the computed hashes.



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# File 'lib/scatter_swap/hasher.rb', line 8

def length
  @length
end

#spin ⇒ Fixnum (readonly)

Returns A seed value to add some spice, so that different apps can have differently mapped hashes.

Returns:

  • (Fixnum) —

    A seed value to add some spice, so that different apps can have differently mapped hashes.



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# File 'lib/scatter_swap/hasher.rb', line 11

def spin
  @spin
end

#working_array ⇒ Array[Fixnum] (readonly)

Returns:

  • (Array[Fixnum]) 


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# File 'lib/scatter_swap/hasher.rb', line 5

def working_array
  @working_array
end

Instance Method Details

#hash ⇒ String

Obfuscate the original integer value to a zero-padded String of #length digits.

Returns:

  • (String) —

    the obfuscated hash.



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# File 'lib/scatter_swap/hasher.rb', line 29

def hash
  swap
  scatter
  completed_string
end

#reverse_hash ⇒ String

De-obfuscate the original integer value to a zero-padded String of #length digits.

Returns:

  • (String) —

    the de-obfuscated hash.



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# File 'lib/scatter_swap/hasher.rb', line 38

def reverse_hash
  unscatter
  unswap
  completed_string
end