SDG/Config/IronPython.Credit Card Numbers.xml
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<?xml version="1.0" encoding="Windows-1252"?><generators><generator type="RedGate.SQLDataGenerator.ExpressionGenerators.Python.PythonScriptGenerator" name="Credit Card Number (VISA)" description="Valid VISA style credit card numbers (using IronPython)" category="Payment">
<property name="Code"># Generate VISA-style numbers with a Luhn checksum import clr clr.AddReference("System") from System import Random random = Random() def choice(l): return l[random.Next(len(l))] def completed_number(prefix, length): # Given a prefix and a desired length, fill in the number up # to the desired length, using Luhn to compute the checksum ccnumber = list(prefix) # Generate digits for _ in range(length - len(prefix) - 1): ccnumber.append(choice('0123456789')) # Calculate sum sum = pos = 0 reversedCCnumber = list(reversed(ccnumber)) while pos < length - 1: odd = int(reversedCCnumber[pos]) * 2 if odd > 9: odd -= 9 if pos != (length - 2): sum += int(reversedCCnumber[pos+1]) sum += odd pos += 2 # Calculate check digit checkdigit = ((sum / 10 + 1) * 10 - sum) % 10 ccnumber.append(str(checkdigit)) return ''.join(ccnumber) def main(config): for _ in range(config["n_rows"]): # VISA numbers start with a 4 yield completed_number('4', 16) </property> <property name="ColumnType">nvarchar</property> <type sqlType="NVarchar" type="String" /></generator></generators> |