Module: Merkle::Util

Included in:
AbstractTree, Config, Proof
Defined in:
lib/merkle/util.rb

Instance Method Summary collapse

Instance Method Details

#bin_to_hex(data) ⇒ String

Convert binary string data to hex string.

Raises:

  • (ArgumentError) 


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# File 'lib/merkle/util.rb', line 26

def bin_to_hex(data)
  raise ArgumentError, 'data must be string' unless data.is_a?(String)
  hex_string?(data) ? data : data.unpack1('H*')
end

#combine_sorted(config, left, right) ⇒ String

Combine two elements(left and right) with sort configuration.

Raises:

  • (ArgumentError) 


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# File 'lib/merkle/util.rb', line 37

def combine_sorted(config, left, right)
  raise ArgumentError, "config must be Merkle::Config" unless config.is_a?(Merkle::Config)
  raise ArgumentError, "left must be string" unless left.is_a?(String)
  raise ArgumentError, "right must be string" unless right.is_a?(String)
  if config.sort_hashes
    lh = left.unpack1('H*')
    rh = right.unpack1('H*')
    lh < rh ? left + right : right + left
  else
    left + right
  end
end

#hex_string?(data) ⇒ Boolean

Check whether data is hex string or not.

Raises:

  • (ArgumentError) 


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# File 'lib/merkle/util.rb', line 8

def hex_string?(data)
  raise ArgumentError, 'data must be string' unless data.is_a?(String)
  data.match?(/\A[0-9a-fA-F]+\z/)
end

#hex_to_bin(data) ⇒ String

Convert hex string data to binary.

Raises:

  • (ArgumentError) 


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# File 'lib/merkle/util.rb', line 17

def hex_to_bin(data)
  raise ArgumentError, 'data must be string' unless data.is_a?(String)
  hex_string?(data) ? [data].pack('H*') : data
end