diff options
Diffstat (limited to 'lib/Zend/Validate/Barcode')
| -rw-r--r-- | lib/Zend/Validate/Barcode/Ean13.php | 112 | ||||
| -rw-r--r-- | lib/Zend/Validate/Barcode/UpcA.php | 100 |
2 files changed, 212 insertions, 0 deletions
diff --git a/lib/Zend/Validate/Barcode/Ean13.php b/lib/Zend/Validate/Barcode/Ean13.php new file mode 100644 index 0000000..393091d --- /dev/null +++ b/lib/Zend/Validate/Barcode/Ean13.php @@ -0,0 +1,112 @@ +<?php + +/** + * Zend Framework + * + * LICENSE + * + * This source file is subject to the new BSD license that is bundled + * with this package in the file LICENSE.txt. + * It is also available through the world-wide-web at this URL: + * http://framework.zend.com/license/new-bsd + * If you did not receive a copy of the license and are unable to + * obtain it through the world-wide-web, please send an email + * to license@zend.com so we can send you a copy immediately. + * + * @category Zend + * @package Zend_Validate + * @copyright Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com) + * @license http://framework.zend.com/license/new-bsd New BSD License + * @version $Id: Ean13.php 11791 2008-10-09 18:19:13Z andries $ + */ + + +/** + * @see Zend_Validate_Abstract + */ +require_once 'Zend/Validate/Abstract.php'; + + +/** + * @category Zend + * @package Zend_Validate + * @copyright Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com) + * @license http://framework.zend.com/license/new-bsd New BSD License + */ +class Zend_Validate_Barcode_Ean13 extends Zend_Validate_Abstract +{ + /** + * Validation failure message key for when the value is + * an invalid barcode + */ + const INVALID = 'invalid'; + + /** + * Validation failure message key for when the value is + * not 13 characters long + */ + const INVALID_LENGTH = 'invalidLength'; + + /** + * Validation failure message key for when the value + * does not only contain numeric characters + */ + const NOT_NUMERIC = 'ean13NotNumeric'; + + /** + * Validation failure message template definitions + * + * @var array + */ + protected $_messageTemplates = array( + self::INVALID => "'%value%' is an invalid EAN-13 barcode", + self::INVALID_LENGTH => "'%value%' should be 13 characters", + self::NOT_NUMERIC => "'%value%' should contain only numeric characters", + ); + + /** + * Defined by Zend_Validate_Interface + * + * Returns true if and only if $value contains a valid barcode + * + * @param string $value + * @return boolean + */ + public function isValid($value) + { + if (false === ctype_digit($value)) { + $this->_error(self::NOT_NUMERIC); + return false; + } + + $valueString = (string) $value; + $this->_setValue($valueString); + + if (strlen($valueString) !== 13) { + $this->_error(self::INVALID_LENGTH); + return false; + } + + $barcode = strrev(substr($valueString, 0, -1)); + $oddSum = 0; + $evenSum = 0; + + for ($i = 0; $i < 12; $i++) { + if ($i % 2 === 0) { + $oddSum += $barcode[$i] * 3; + } elseif ($i % 2 === 1) { + $evenSum += $barcode[$i]; + } + } + + $calculation = ($oddSum + $evenSum) % 10; + $checksum = ($calculation === 0) ? 0 : 10 - $calculation; + + if ($valueString[12] != $checksum) { + $this->_error(self::INVALID); + return false; + } + + return true; + } +} diff --git a/lib/Zend/Validate/Barcode/UpcA.php b/lib/Zend/Validate/Barcode/UpcA.php new file mode 100644 index 0000000..c584e81 --- /dev/null +++ b/lib/Zend/Validate/Barcode/UpcA.php @@ -0,0 +1,100 @@ +<?php + +/** + * Zend Framework + * + * LICENSE + * + * This source file is subject to the new BSD license that is bundled + * with this package in the file LICENSE.txt. + * It is also available through the world-wide-web at this URL: + * http://framework.zend.com/license/new-bsd + * If you did not receive a copy of the license and are unable to + * obtain it through the world-wide-web, please send an email + * to license@zend.com so we can send you a copy immediately. + * + * @category Zend + * @package Zend_Validate + * @copyright Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com) + * @license http://framework.zend.com/license/new-bsd New BSD License + * @version $Id: UpcA.php 8210 2008-02-20 14:09:05Z andries $ + */ + + +/** + * @see Zend_Validate_Abstract + */ +require_once 'Zend/Validate/Abstract.php'; + + +/** + * @category Zend + * @package Zend_Validate + * @copyright Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com) + * @license http://framework.zend.com/license/new-bsd New BSD License + */ +class Zend_Validate_Barcode_UpcA extends Zend_Validate_Abstract +{ + /** + * Validation failure message key for when the value is + * an invalid barcode + */ + const INVALID = 'invalid'; + + /** + * Validation failure message key for when the value is + * not 12 characters long + */ + const INVALID_LENGTH = 'invalidLength'; + + /** + * Validation failure message template definitions + * + * @var array + */ + protected $_messageTemplates = array( + self::INVALID => "'%value%' is an invalid UPC-A barcode", + self::INVALID_LENGTH => "'%value%' should be 12 characters", + ); + + /** + * Defined by Zend_Validate_Interface + * + * Returns true if and only if $value contains a valid barcode + * + * @param string $value + * @return boolean + */ + public function isValid($value) + { + $valueString = (string) $value; + $this->_setValue($valueString); + + if (strlen($valueString) !== 12) { + $this->_error(self::INVALID_LENGTH); + return false; + } + + $barcode = substr($valueString, 0, -1); + $oddSum = 0; + $evenSum = 0; + + for ($i = 0; $i < 11; $i++) { + if ($i % 2 === 0) { + $oddSum += $barcode[$i] * 3; + } elseif ($i % 2 === 1) { + $evenSum += $barcode[$i]; + } + } + + $calculation = ($oddSum + $evenSum) % 10; + $checksum = ($calculation === 0) ? 0 : 10 - $calculation; + + if ($valueString[11] != $checksum) { + $this->_error(self::INVALID); + return false; + } + + return true; + } +} |