dev-util/docs/pt-br/cpf.js

Utilities for developers and testers

'use strict';

var calcMod11 = require('./utils').calcMod11;

function getChecksum(cpfNumber){
	cpfNumber = cpfNumber.replace(/\D/gi, "");
	var checksumParts = [0,0];
	for(var i=0, fac = 11;i<9;i++){
		var value = parseInt(cpfNumber[i]);
		checksumParts[1] += value * fac;
		fac--;
		checksumParts[0] += value * fac;
	}

	checksumParts[0] = calcMod11(checksumParts[0]);
	checksumParts[1] += checksumParts[0] * 2;
	checksumParts[1] = calcMod11(checksumParts[1]);
	return checksumParts.join("");
}

function validate(cpfNumber){
	cpfNumber += "";
	cpfNumber = cpfNumber.replace(/\D/gi, "");
	if(cpfNumber.length !== 11){
		return false;
	}

	if(/(^1{11}$)/.test(cpfNumber)||
	   /(^2{11}$)/.test(cpfNumber)||
	   /(^3{11}$)/.test(cpfNumber)||
	   /(^4{11}$)/.test(cpfNumber)||
	   /(^5{11}$)/.test(cpfNumber)||
	   /(^6{11}$)/.test(cpfNumber)||
	   /(^7{11}$)/.test(cpfNumber)||
	   /(^8{11}$)/.test(cpfNumber)||
	   /(^9{11}$)/.test(cpfNumber)||
	   /(^0{11}$)/.test(cpfNumber)){
		return false;
	}
	
	return cpfNumber.slice(-2) === getChecksum(cpfNumber);
}

function generate(){
	var cpfNumber = "";
	for(var i=0;i<9;i++){
		cpfNumber += Math.floor(Math.random()*10);
	}
	return cpfNumber + getChecksum(cpfNumber);
}

function generateWithMask(){
	return generate().replace(/(\d{3})(\d{3})(\d{3})(\d{2})/g,"$1.$2.$3-$4");
}

module.exports = {
	validate : validate,
	generate: generate,
	generateWithMask: generateWithMask
};