Subversion-Projekte lars-tiefland.faltradxxs.de

/*
 * 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, element ) {
        "use strict";

        if ( this.optional( element ) ) {
                return true;
        }

        // 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" );