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 <?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_Service_ShortUrl
  * @copyright  Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  * @version    $Id: $
  */
 
 /**
  * @see Zend_Service_Abstract
  */
 // require_once 'Zend/Service/Abstract.php';
 
 /**
  * @see Zend_Service_ShortUrl_Shortener
  */
 // require_once 'Zend/Service/ShortUrl/Shortener.php';
 
 /**
  * @category   Zend
  * @package    Zend_Service_ShortUrl
  * @copyright  Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  */
 abstract class Zend_Service_ShortUrl_AbstractShortener
     extends Zend_Service_Abstract
     implements Zend_Service_ShortUrl_Shortener
 {
     /**
      * Base URI of the service
      *
      * @var string
      */
     protected $_baseUri = null;
 
 
     /**
      * Checks whether URL to be shortened is valid
      *
      * @param string $url
      * @throws Zend_Service_ShortUrl_Exception When URL is not valid
      */
     protected function _validateUri($url)
     {
         // require_once 'Zend/Uri.php';
         if (!Zend_Uri::check($url)) {
             // require_once 'Zend/Service/ShortUrl/Exception.php';
             throw new Zend_Service_ShortUrl_Exception(sprintf(
                 'The url "%s" is not valid and cannot be shortened', $url
             ));
         }
     }
 
     /**
      * Verifies that the URL has been shortened by this service
      *
      * @throws Zend_Service_ShortUrl_Exception If the URL hasn't been shortened by this service
      * @param string $shortenedUrl
      */
     protected function _verifyBaseUri($shortenedUrl)
     {
         if (strpos($shortenedUrl, $this->_baseUri) !== 0) {
             // require_once 'Zend/Service/ShortUrl/Exception.php';
             throw new Zend_Service_ShortUrl_Exception(sprintf(
                 'The url "%s" is not valid for this service and the target cannot be resolved',
                 $shortenedUrl
             ));
         }
     }
 }