class-format.php

<?php

if ( ! defined( 'ABSPATH' ) ) {
	exit; // Exit if accessed directly
}

class WooCommerceNFeFormat extends WooCommerceNFe {

	/**
	 * CPF format
	 * 
	 * @return string
	 */
	function cpf( $string ){

		if (!$string) return;
		$string = self::clear( $string );
		$string = self::mask($string,'###.###.###-##');
		return $string;

	}

	/**
	 * CNPJ format
	 *
	 * @return string
	 */
	function cnpj( $string ){

		if (!$string) return;
		$string = self::clear( $string );
		$string = self::mask($string,'##.###.###/####-##');
		return $string;

	}

	/**
	 * Zipcode format
	 *
	 * @return string
	 */
	function cep( $string ){

		if (!$string) return;
		$string = self::clear( $string );
		$string = self::mask($string,'#####-###');
		return $string;

	}

	/**
	 * Clear string
	 *
	 * @return string
	 */
	function clear( $string ) {

		$string = str_replace( array(',', '-', '!', '.', '/', '?', '(', ')', ' ', '$', 'R$', '€'), '', $string );
		return $string;

	}

	/**
	 * Mask string
	 *
	 * @return string
	 */
	function mask($val, $mask) {

		$maskared = '';
		$k = 0;
		for ($i = 0; $i<=strlen($mask)-1; $i++) {
			if ($mask[$i] == '#'){
				if (isset($val[$k]))
						$maskared .= $val[$k++];
			} else {
				if(isset($mask[$i])) $maskared .= $mask[$i];
			}
		}
		return $maskared;

	}

	/**
	 * Validate CPF
	 *
	 * @return string
	 */
	function is_cpf( $cpf ) {

		$cpf = preg_replace( '/[^0-9]/', '', $cpf );

		if ( 11 != strlen( $cpf ) || preg_match( '/^([0-9])\1+$/', $cpf ) ) {
			return false;
		}

		$digit = substr( $cpf, 0, 9 );

		for ( $j = 10; $j <= 11; $j++ ) {
			$sum = 0;

			for( $i = 0; $i< $j-1; $i++ ) {
				$sum += ( $j - $i ) * ( (int) $digit[ $i ] );
			}

			$summod11 = $sum % 11;
			$digit[ $j - 1 ] = $summod11 < 2 ? 0 : 11 - $summod11;
		}

		return $digit[9] == ( (int) $cpf[9] ) && $digit[10] == ( (int) $cpf[10] );

	}

	/**
	 * Validate CNPJ
	 *
	 * @return string
	 */
	function is_cnpj( $cnpj ) {

		$cnpj = sprintf( '%014s', preg_replace( '{\D}', '', $cnpj ) );

		if ( 14 != ( strlen( $cnpj ) ) || ( 0 == intval( substr( $cnpj, -4 ) ) ) ) {
			return false;
		}

		for ( $t = 11; $t < 13; ) {

			for ( $d = 0, $p = 2, $c = $t; $c >= 0; $c--, ( $p < 9 ) ? $p++ : $p = 2 ) {
				$d += $cnpj[ $c ] * $p;
			}

			if ( $cnpj[ ++$t ] != ( $d = ( ( 10 * $d ) % 11 ) % 10 ) ) {
				return false;
			}

		}

		return true;

	}

	/**
	 * Format number
	 *
	 * @return string
	**/
	function format_number( $string ) {

		return str_replace( array( '.', '-', '/' ), '', $string );

	}

	/**
	 * Format birthdate
	 *
	 * @return string
	**/
	function get_formatted_birthdate( $date, $server ) {

		$birthdate = explode( '/', $date );

		if ( isset( $birthdate[1] ) && ! empty( $birthdate[1] ) ) {
			return $server->format_datetime( $birthdate[1] . '/' . $birthdate[0] . '/' . $birthdate[2] );
		}

		return '';

	}

}