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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_Feed_Writer
  * @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    $Id$
  */
 
 /**
  * @category   Zend
  * @package    Zend_Feed_Writer
  * @copyright  Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  */
 class Zend_Feed_Writer_Extension_ITunes_Entry
 {
     /**
      * Array of Feed data for rendering by Extension's renderers
      *
      * @var array
      */
     protected $_data = array();
 
     /**
      * Encoding of all text values
      *
      * @var string
      */
     protected $_encoding = 'UTF-8';
 
     /**
      * Set feed encoding
      *
      * @param  string $enc
      * @return Zend_Feed_Writer_Extension_ITunes_Entry
      */
     public function setEncoding($enc)
     {
         $this->_encoding = $enc;
         return $this;
     }
 
     /**
      * Get feed encoding
      *
      * @return string
      */
     public function getEncoding()
     {
         return $this->_encoding;
     }
 
     /**
      * Set a block value of "yes" or "no". You may also set an empty string.
      *
      * @param  string
      * @return Zend_Feed_Writer_Extension_ITunes_Entry
      */
     public function setItunesBlock($value)
     {
         if (!ctype_alpha($value) && strlen($value) > 0) {
             // require_once 'Zend/Feed/Exception.php';
             throw new Zend_Feed_Exception('invalid parameter: "block" may only'
             . ' contain alphabetic characters');
         }
         if (iconv_strlen($value, $this->getEncoding()) > 255) {
             // require_once 'Zend/Feed/Exception.php';
             throw new Zend_Feed_Exception('invalid parameter: "block" may only'
             . ' contain a maximum of 255 characters');
         }
         $this->_data['block'] = $value;
     }
 
     /**
      * Add authors to itunes entry
      *
      * @param  array $values
      * @return Zend_Feed_Writer_Extension_ITunes_Entry
      */
     public function addItunesAuthors(array $values)
     {
         foreach ($values as $value) {
             $this->addItunesAuthor($value);
         }
         return $this;
     }
 
     /**
      * Add author to itunes entry
      *
      * @param  string $value
      * @return Zend_Feed_Writer_Extension_ITunes_Entry
      */
     public function addItunesAuthor($value)
     {
         if (iconv_strlen($value, $this->getEncoding()) > 255) {
             // require_once 'Zend/Feed/Exception.php';
             throw new Zend_Feed_Exception('invalid parameter: any "author" may only'
             . ' contain a maximum of 255 characters each');
         }
         if (!isset($this->_data['authors'])) {
             $this->_data['authors'] = array();
         }
         $this->_data['authors'][] = $value;
         return $this;
     }
 
     /**
      * Set duration
      *
      * @param  int $value
      * @return Zend_Feed_Writer_Extension_ITunes_Entry
      */
     public function setItunesDuration($value)
     {
         $value = (string) $value;
         if (!ctype_digit($value)
             && !preg_match("/^\d+:[0-5]{1}[0-9]{1}$/", $value)
             && !preg_match("/^\d+:[0-5]{1}[0-9]{1}:[0-5]{1}[0-9]{1}$/", $value)
         ) {
             // require_once 'Zend/Feed/Exception.php';
             throw new Zend_Feed_Exception('invalid parameter: "duration" may only'
             . ' be of a specified [[HH:]MM:]SS format');
         }
         $this->_data['duration'] = $value;
         return $this;
     }
 
     /**
      * Set "explicit" flag
      *
      * @param  bool $value
      * @return Zend_Feed_Writer_Extension_ITunes_Entry
      */
     public function setItunesExplicit($value)
     {
         if (!in_array($value, array('yes','no','clean'))) {
             // require_once 'Zend/Feed/Exception.php';
             throw new Zend_Feed_Exception('invalid parameter: "explicit" may only'
             . ' be one of "yes", "no" or "clean"');
         }
         $this->_data['explicit'] = $value;
         return $this;
     }
 
     /**
      * Set keywords
      *
      * @param  array $value
      * @return Zend_Feed_Writer_Extension_ITunes_Entry
      */
     public function setItunesKeywords(array $value)
     {
         if (count($value) > 12) {
             // require_once 'Zend/Feed/Exception.php';
             throw new Zend_Feed_Exception('invalid parameter: "keywords" may only'
             . ' contain a maximum of 12 terms');
         }
         $concat = implode(',', $value);
         if (iconv_strlen($concat, $this->getEncoding()) > 255) {
             // require_once 'Zend/Feed/Exception.php';
             throw new Zend_Feed_Exception('invalid parameter: "keywords" may only'
             . ' have a concatenated length of 255 chars where terms are delimited'
             . ' by a comma');
         }
         $this->_data['keywords'] = $value;
         return $this;
     }
 
     /**
      * Set subtitle
      *
      * @param  string $value
      * @return Zend_Feed_Writer_Extension_ITunes_Entry
      */
     public function setItunesSubtitle($value)
     {
         if (iconv_strlen($value, $this->getEncoding()) > 255) {
             // require_once 'Zend/Feed/Exception.php';
             throw new Zend_Feed_Exception('invalid parameter: "subtitle" may only'
             . ' contain a maximum of 255 characters');
         }
         $this->_data['subtitle'] = $value;
         return $this;
     }
 
     /**
      * Set summary
      *
      * @param  string $value
      * @return Zend_Feed_Writer_Extension_ITunes_Entry
      */
     public function setItunesSummary($value)
     {
         if (iconv_strlen($value, $this->getEncoding()) > 4000) {
             // require_once 'Zend/Feed/Exception.php';
             throw new Zend_Feed_Exception('invalid parameter: "summary" may only'
             . ' contain a maximum of 4000 characters');
         }
         $this->_data['summary'] = $value;
         return $this;
     }
 
     /**
      * Overloading to itunes specific setters
      *
      * @param  string $method
      * @param  array $params
      * @return mixed
      */
     public function __call($method, array $params)
     {
         $point = Zend_Feed_Writer::lcfirst(substr($method, 9));
         if (!method_exists($this, 'setItunes' . ucfirst($point))
             && !method_exists($this, 'addItunes' . ucfirst($point))
         ) {
             // require_once 'Zend/Feed/Writer/Exception/InvalidMethodException.php';
             throw new Zend_Feed_Writer_Exception_InvalidMethodException(
                 'invalid method: ' . $method
             );
         }
         if (!array_key_exists($point, $this->_data)
             || empty($this->_data[$point])
         ) {
             return null;
         }
         return $this->_data[$point];
     }
 }