Class: Ipfs::Base58

Inherits:
Object
  • Object
show all
Defined in:
lib/ruby-ipfs-http-client/base.rb

Constant Summary collapse

ALPHABET = 
'123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz'
BASE = 
ALPHABET.length

Class Method Summary collapse

Class Method Details

.decode(number) ⇒ Object 



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# File 'lib/ruby-ipfs-http-client/base.rb', line 6

def self.decode(number)
  valid?(number) \
    ? to_base10(number)
    : 0
end

.encode(base10_number) ⇒ Object 



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# File 'lib/ruby-ipfs-http-client/base.rb', line 26

def self.encode(base10_number)
  base10_number.is_a?(Integer) \
    ? to_base58(base10_number) \
    : ''
end

.to_base10(base58_number) ⇒ Object 



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# File 'lib/ruby-ipfs-http-client/base.rb', line 12

def self.to_base10(base58_number)
  base58_number
    .reverse
    .split(//)
    .each_with_index
    .reduce(0) do |base10_number, (base58_numeral, index)|
    base10_number + ALPHABET.index(base58_numeral) * (BASE**index)
  end
end

.to_base58(base10_number) ⇒ Object 



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# File 'lib/ruby-ipfs-http-client/base.rb', line 32

def self.to_base58(base10_number)
  base58_number = ''

  begin
    base58_number << ALPHABET[base10_number % BASE]
    base10_number /= BASE
  end while base10_number > 0

  base58_number.reverse
end

.valid?(number) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/ruby-ipfs-http-client/base.rb', line 22

def self.valid?(number)
  number.match?(/\A[#{ALPHABET}]+\z/)
end