Class: Check

Inherits:
Object
  • Object
show all
Defined in:
lib/verified/check.rb

Defined Under Namespace

Classes: CheckDigit, YYDate

Instance Method Summary collapse

Instance Method Details

#check(mrz_line_1, mrz_line_2) ⇒ Object 



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# File 'lib/verified/check.rb', line 4

def check(mrz_line_1, mrz_line_2)
  #make a new digit checker
  @@digit_checker = CheckDigit.new
  @@date_converter = YYDate.new
  #string manipulation to simply reading the first line
  split = mrz_line_1.split(/<+/)
  #get data unformatted from passport
  doc_data = Hash.new(9)
  #first line of MRZ
  doc_data["IssuingState"] = mrz_line_1[2...5].sub(/<+/, '')
  doc_data["LastName"] = split[1][3..-1]
  doc_data["FirstNames"] = split[2..-1]

  #second line of MRZ
  doc_data["Number"] = mrz_line_2[0...9]
  doc_data["Nationality"] = mrz_line_2[10...13].sub(/<+/, '')
  doc_data["DateOfBirth"] = @@date_converter.convert_to_date(mrz_line_2[13...19])
  doc_data["Gender"] = mrz_line_2[20].sub(/<+/, '')
  doc_data["ExpiryDate"] = @@date_converter.convert_to_date(mrz_line_2[21...27])
  doc_data["PersonalNumber"] = mrz_line_2[28...42].sub(/<+/, '')

  #mrz given check digits
  doc_check = Array.new
  doc_check[0] = mrz_line_2[9].to_s
  doc_check[1] = mrz_line_2[19].to_s
  doc_check[2] = mrz_line_2[27].to_s
  doc_check[3] = mrz_line_2[42].to_s
  doc_check[4] = mrz_line_2[43].to_s

  #calculate our own check digits
  our_check = Array.new
  our_check[0] = @@digit_checker.check_calc(mrz_line_2[0...9])
  our_check[1] = @@digit_checker.check_calc(mrz_line_2[13...19])
  our_check[2] = @@digit_checker.check_calc(mrz_line_2[21...27])
  our_check[3] = @@digit_checker.check_calc(mrz_line_2[28...42])
  our_check[4]	= @@digit_checker.check_calc(mrz_line_2[0...10]+mrz_line_2[13...20]+mrz_line_2[21...43])

  #the 4th check digit can be either > or 0, we always return 0 from our CheckDigit calc.
  #this basically changes our check to > so the true return can pass
  if our_check[3] == "0" && doc_check[3] == "<"
  	our_check[3] = "<"
  end

  return doc_data if doc_check.uniq.sort == our_check.uniq.sort
  return false
end