Class: Digest::XXHash

Inherits:
Class
  • Object
show all
Defined in:
lib/ruby-xxhash.rb

Direct Known Subclasses

XXHash32, XXHash64

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(bitlen, seed = 0) ⇒ XXHash

Returns a new instance of XXHash.



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# File 'lib/ruby-xxhash.rb', line 46

def initialize bitlen, seed = 0
  case bitlen
    when 32
      @hash = XXhash::XXhashInternal::XXhash32.new(seed)
    when 64
      @hash = XXhash::XXhashInternal::XXhash64.new(seed)
    else
      raise ArgumentError, "Unsupported bit length: %s" % bitlen.inspect
  end
  @digest_length = bitlen
end

Instance Attribute Details

#digest_length ⇒ Object (readonly)

Returns the value of attribute digest_length.



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# File 'lib/ruby-xxhash.rb', line 45

def digest_length
  @digest_length
end

Instance Method Details

#digest(val = nil) ⇒ Object 



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# File 'lib/ruby-xxhash.rb', line 62

def digest val=nil
  if val
    @hash.update val
  end

  @hash.digest
end

#digest!(val = nil) ⇒ Object 



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# File 'lib/ruby-xxhash.rb', line 70

def digest! val=nil
  result = digest(val)
  @hash.reset
  result
end

#reset ⇒ Object 



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# File 'lib/ruby-xxhash.rb', line 76

def reset
  @hash.reset
end

#update(chunk) ⇒ Object 



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# File 'lib/ruby-xxhash.rb', line 58

def update chunk
  @hash.update(chunk)
end