<?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: Barcode.php 8211 2008-02-20 14:29:24Z darby $
 */

/**
 * @see Zend_Validate_Abstract
 */
require_once 'external/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 extends Zend_Validate_Abstract {
  /**
   * Barcode validator
   *
   * @var Zend_Validate_Abstract
   */
  protected $_barcodeValidator;

  /**
   * Generates the standard validator object
   *
   * @param  string $barcodeType - Barcode validator to use
   * @return void
   * @throws Zend_Validate_Exception
   */
  public function __construct($barcodeType) {
    $this->setType($barcodeType);
  }

  /**
   * Sets a new barcode validator
   *
   * @param  string $barcodeType - Barcode validator to use
   * @return void
   * @throws Zend_Validate_Exception
   */
  public function setType($barcodeType) {
    switch (strtolower($barcodeType)) {
      case 'upc':
      case 'upc-a':
        $className = 'UpcA';
        break;
      case 'ean13':
      case 'ean-13':
        $className = 'Ean13';
        break;
      default:
        require_once 'external/Zend/Validate/Exception.php';
        throw new Zend_Validate_Exception("Barcode type '$barcodeType' is not supported'");
        break;
    }
    
    require_once 'external/Zend/Validate/Barcode/' . $className . '.php';
    
    $class = 'Zend_Validate_Barcode_' . $className;
    $this->_barcodeValidator = new $class();
  }

  /**
   * 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) {
    return call_user_func(array($this->_barcodeValidator, 'isValid'), $value);
  }
}
