Additionals: Brazilian CPF number

Closes #1310

src/additional/cpfBR.js

@@ -0,0 +1,57 @@
+/*
+ * Brazillian CPF number (Cadastrado de Pessoas Físicas) is the equivalent of a Brazilian tax registration number.
+ * CPF numbers have 11 digits in total: 9 numbers followed by 2 check numbers that are being used for validation.
+ */
+$.validator.addMethod("cpfBR", function(value) {
+	// Removing special characters from value
+	value = value.replace(/([~!@#$%^&*()_+=`{}\[\]\-|\\:;'<>,.\/? ])+/g, "");
+
+	// Checking value to have 11 digits only
+	if (value.length !== 11) {
+		return false;
+	}
+
+	var sum = 0,
+		firstCN, secondCN, checkResult, i;
+
+	firstCN = parseInt(value.substring(9, 10), 10);
+	secondCN = parseInt(value.substring(10, 11), 10);
+
+	checkResult = function(sum, cn) {
+		var result = (sum * 10) % 11;
+		if ((result === 10) || (result === 11)) {result = 0;}
+		return (result === cn);
+	};
+
+	// Checking for dump data
+	if (value === "" ||
+		value === "00000000000" ||
+		value === "11111111111" ||
+		value === "22222222222" ||
+		value === "33333333333" ||
+		value === "44444444444" ||
+		value === "55555555555" ||
+		value === "66666666666" ||
+		value === "77777777777" ||
+		value === "88888888888" ||
+		value === "99999999999"
+	) {
+		return false;
+	}
+
+	// Step 1 - using first Check Number:
+	for ( i = 1; i <= 9; i++ ) {
+		sum = sum + parseInt(value.substring(i - 1, i), 10) * (11 - i);
+	}
+
+	// If first Check Number (CN) is valid, move to Step 2 - using second Check Number:
+	if ( checkResult(sum, firstCN) ) {
+		sum = 0;
+		for ( i = 1; i <= 10; i++ ) {
+			sum = sum + parseInt(value.substring(i - 1, i), 10) * (12 - i);
+		}
+		return checkResult(sum, secondCN);
+	}
+	return false;
+
+}, "Please specify a valid CPF number");

src/localization/messages_pt_BR.js

@@ -24,5 +24,6 @@ $.extend($.validator.messages, {
 	nifES: "Por favor, forneça um NIF válido.",
 	nieES: "Por favor, forneça um NIE válido.",
 	cifEE: "Por favor, forneça um CIF válido.",
-	postalcodeBR: "Por favor, forneça um CEP válido."
+	postalcodeBR: "Por favor, forneça um CEP válido.",
+	cpfBR: "Por favor, forneça um CPF válido."
 });

test/methods.js

@@ -1269,4 +1269,17 @@ test("postalcodeBR", function() {
 	ok( !method( "99.999999"), "Invalid BR Postal Code");
 });
 
+test("cpfBR", function() {
+	var method = methodTest("cpfBR");
+	ok( method( "11144477735"), "Valid CPF Number");
+	ok( method( "263.946.533-30"), "Valid CPF Number");
+	ok( method( "325 861 044 47"), "Valid CPF Number");
+	ok( method( "859-684-732-40"), "Valid CPF Number");
+	ok( !method( "99999999999"), "Invalid CPF Number: dump data");
+	ok( !method( "1114447773"), "Invalid CPF Number: < 11 digits");
+	ok( !method( "111444777355"), "Invalid CPF Number: > 11 digits");
+	ok( !method( "11144477715"), "Invalid CPF Number: 1st check number failed");
+	ok( !method( "11144477737"), "Invalid CPF Number: 2nd check number failed");
+});
+
 })(jQuery);