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Swift (1.2) function to validate CNPJ
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// Returns true if the given cnpj is valid | |
func checkIfCNPJIsValid(cnpj: String) -> Bool { | |
if(cnpj.isEmpty) { | |
return true | |
} | |
// validates format, allowed ones: 38.041.242/0001-04, 38041242000104 | |
var formatRegex = NSRegularExpression(pattern: "^[0-9\\.\\-\\/]*[0-9]$", options: NSRegularExpressionOptions.CaseInsensitive, error: nil) | |
if(formatRegex!.matchesInString(cnpj, options: nil, range:NSMakeRange(0, count(cnpj))).count == 0) { | |
return false | |
} | |
// remove any character that is not a decimal digit | |
var regex: NSRegularExpression = NSRegularExpression(pattern: "\\D", options: NSRegularExpressionOptions.CaseInsensitive, error: nil)! | |
var cnpj = regex.stringByReplacingMatchesInString(cnpj, options: nil, range: NSMakeRange(0, count(cnpj)), withTemplate: "") | |
if(cnpj == "") { | |
return false | |
} | |
if (count(cnpj) != 14) { | |
return false | |
} | |
// Elimina CNPJs invalidos conhecidos | |
if (cnpj == "00000000000000" || | |
cnpj == "11111111111111" || | |
cnpj == "22222222222222" || | |
cnpj == "33333333333333" || | |
cnpj == "44444444444444" || | |
cnpj == "55555555555555" || | |
cnpj == "66666666666666" || | |
cnpj == "77777777777777" || | |
cnpj == "88888888888888" || | |
cnpj == "99999999999999") { | |
return false | |
} | |
// Valida DVs | |
var tamanho = count(cnpj) - 2 | |
var numeros = (cnpj as NSString).substringWithRange(NSRange(location: 0, length: tamanho)) | |
var digitos = (cnpj as NSString).substringWithRange(NSRange(location: count(cnpj)-2, length: 2)) | |
var soma = 0; | |
var pos = tamanho - 7; | |
for (var i = tamanho; i >= 1; --i) { | |
var aux = String(Array(numeros)[tamanho-i]).toInt()! * pos-- | |
soma += aux | |
if (pos < 2) { | |
pos = 9 | |
} | |
} | |
var resultado = soma % 11 < 2 ? 0 : 11 - soma % 11; | |
if ("\(resultado)" != (digitos as NSString).substringWithRange(NSRange(location: 0, length: 1))) { | |
return false | |
} | |
tamanho = tamanho + 1; | |
numeros = (cnpj as NSString).substringWithRange(NSRange(location: 0, length: tamanho)) | |
soma = 0; | |
pos = tamanho - 7; | |
for (var i = tamanho; i >= 1; --i) { | |
var aux = String(Array(numeros)[tamanho-i]).toInt()! * pos-- | |
soma += aux | |
if (pos < 2) { | |
pos = 9 | |
} | |
} | |
resultado = soma % 11 < 2 ? 0 : 11 - soma % 11; | |
if ("\(resultado)" != (digitos as NSString).substringWithRange(NSRange(location: 1, length: 1))) { | |
return false | |
} | |
return true | |
} | |
validarCNPJ("54.425.507/0001-16") | |
// true |
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