Module: Yahsort

Defined in:
lib/yahsort.rb,
lib/yahsort/helper.rb,
lib/yahsort/version.rb

Constant Summary collapse

PATTERN =

dig should indicate the ‘digits’ sec is secondary idx, number based match is done on same secondaries db1 api2 ==> api2, db1 prod0api1 —> secondary = prod0api, dig = 1

'^(?<sec>\w*\D)(?<dig>\d+)'
REGEX = 
Regexp.new(PATTERN)
VERSION = 
"0.0.3"

Class Method Summary collapse

Class Method Details

.fqdn_sorter ⇒ Object 



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# File 'lib/yahsort/helper.rb', line 2

def self.fqdn_sorter
  pattern =  Yahsort::PATTERN + '\.'
  regex = Regexp.new(pattern)
  
  self.sorter(regex=regex)
end

.sorter(regex = REGEX, secondary_precedence = true) ⇒ Object 



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# File 'lib/yahsort.rb', line 12

def self.sorter(regex=REGEX, secondary_precedence=true)
  
  sorter = lambda do |x,y|
    reg = regex

    mX = reg.match(x)
    mY = reg.match(y)
    
    if (nil == mX) || (nil == mY)
      # fallback to default comparison
      return x <=> y
    end

    dX = mX[:dig].to_i
    secondaryX = mX[:sec]
    
    dY = mY[:dig].to_i
    secondaryY = mY[:sec]

    return dX <=> dY unless secondary_precedence

    #sort on digits if secondary is same
    if secondaryX == secondaryY
      return dX <=> dY
    else
      return x <=> y
    end
  end

  return sorter
end