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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_Tool
  * @subpackage Framework
  * @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_Tool
  * @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_Tool_Framework_Client_Response
 {
     /**
      * @var callback|null
      */
     protected $_callback = null;
 
     /**
      * @var array
      */
     protected $_content = array();
 
     /**
      * @var Zend_Tool_Framework_Exception
      */
     protected $_exception = null;
 
     /**
      * @var array
      */
     protected $_decorators = array();
 
     /**
      * @var array
      */
     protected $_defaultDecoratorOptions = array();
 
     /**
      * setContentCallback()
      *
      * @param callback $callback
      * @return Zend_Tool_Framework_Client_Response
      */
     public function setContentCallback($callback)
     {
         if (!is_callable($callback)) {
             // require_once 'Zend/Tool/Framework/Client/Exception.php';
             throw new Zend_Tool_Framework_Client_Exception('The callback provided is not callable');
         }
         $this->_callback = $callback;
         return $this;
     }
 
     /**
      * setContent()
      *
      * @param string $content
      * @return Zend_Tool_Framework_Client_Response
      */
     public function setContent($content, Array $decoratorOptions = array())
     {
         $content = $this->_applyDecorators($content, $decoratorOptions);
 
         $this->_content = array();
         $this->appendContent($content);
         return $this;
     }
 
     /**
      * appendCallback
      *
      * @param string $content
      * @return Zend_Tool_Framework_Client_Response
      */
     public function appendContent($content, Array $decoratorOptions = array())
     {
         $content = $this->_applyDecorators($content, $decoratorOptions);
 
         if ($this->_callback !== null) {
             call_user_func($this->_callback, $content);
         }
 
         $this->_content[] = $content;
 
         return $this;
     }
 
     /**
      * setDefaultDecoratorOptions()
      *
      * @param array $decoratorOptions
      * @param bool $mergeIntoExisting
      * @return Zend_Tool_Framework_Client_Response
      */
     public function setDefaultDecoratorOptions(Array $decoratorOptions, $mergeIntoExisting = false)
     {
         if ($mergeIntoExisting == false) {
             $this->_defaultDecoratorOptions = array();
         }
 
         $this->_defaultDecoratorOptions = array_merge($this->_defaultDecoratorOptions, $decoratorOptions);
         return $this;
     }
 
     /**
      * getContent()
      *
      * @return string
      */
     public function getContent()
     {
         return implode('', $this->_content);
     }
 
     /**
      * isException()
      *
      * @return bool
      */
     public function isException()
     {
         return isset($this->_exception);
     }
 
     /**
      * setException()
      *
      * @param Exception $exception
      * @return Zend_Tool_Framework_Client_Response
      */
     public function setException(Exception $exception)
     {
         $this->_exception = $exception;
         return $this;
     }
 
     /**
      * getException()
      *
      * @return Exception
      */
     public function getException()
     {
         return $this->_exception;
     }
 
     /**
      * Add Content Decorator
      *
      * @param Zend_Tool_Framework_Client_Response_ContentDecorator_Interface $contentDecorator
      * @return unknown
      */
     public function addContentDecorator(Zend_Tool_Framework_Client_Response_ContentDecorator_Interface $contentDecorator)
     {
         $decoratorName = strtolower($contentDecorator->getName());
         $this->_decorators[$decoratorName] = $contentDecorator;
         return $this;
     }
 
     /**
      * getContentDecorators()
      *
      * @return array
      */
     public function getContentDecorators()
     {
         return $this->_decorators;
     }
 
     /**
      * __toString() to cast to a string
      *
      * @return string
      */
     public function __toString()
     {
         return (string) implode('', $this->_content);
     }
 
     /**
      * _applyDecorators() apply a group of decorators
      *
      * @param string $content
      * @param array $decoratorOptions
      * @return string
      */
     protected function _applyDecorators($content, Array $decoratorOptions)
     {
         $options = array_merge($this->_defaultDecoratorOptions, $decoratorOptions);
 
         $options = array_change_key_case($options, CASE_LOWER);
 
         if ($options) {
             foreach ($this->_decorators as $decoratorName => $decorator) {
                 if (array_key_exists($decoratorName, $options)) {
                     $content = $decorator->decorate($content, $options[$decoratorName]);
                 }
             }
         }
 
         return $content;
 
     }
 
 }