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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_Log
  * @subpackage Formatter
  * @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    $Id$
  */
 
 /** Zend_Log_Formatter_Abstract */
 // require_once 'Zend/Log/Formatter/Abstract.php';
 
 /**
  * @category   Zend
  * @package    Zend_Log
  * @subpackage Formatter
  * @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    $Id$
  */
 class Zend_Log_Formatter_Xml extends Zend_Log_Formatter_Abstract
 {
     /**
      * @var string Name of root element
      */
     protected $_rootElement;
 
     /**
      * @var array Relates XML elements to log data field keys.
      */
     protected $_elementMap;
 
     /**
      * @var string Encoding to use in XML
      */
     protected $_encoding;
 
     /**
      * Class constructor
      * (the default encoding is UTF-8)
      *
      * @param array|Zend_Config $options
      * @return void
      */
     public function __construct($options = array())
     {
         if ($options instanceof Zend_Config) {
             $options = $options->toArray();
         } elseif (!is_array($options)) {
             $args = func_get_args();
 
             $options = array(
               'rootElement' => array_shift($args)
             );
 
             if (count($args)) {
                 $options['elementMap'] = array_shift($args);
             }
 
             if (count($args)) {
                 $options['encoding'] = array_shift($args);
             }
         }
 
         if (!array_key_exists('rootElement', $options)) {
             $options['rootElement'] = 'logEntry';
         }
 
         if (!array_key_exists('encoding', $options)) {
             $options['encoding'] = 'UTF-8';
         }
 
         $this->_rootElement = $options['rootElement'];
         $this->setEncoding($options['encoding']);
 
         if (array_key_exists('elementMap', $options)) {
             $this->_elementMap  = $options['elementMap'];
         }
     }
 
     /**
    * Factory for Zend_Log_Formatter_Xml classe
    *
    * @param array|Zend_Config $options
    * @return Zend_Log_Formatter_Xml
      */
     public static function factory($options)
     {
         return new self($options);
     }
 
     /**
      * Get encoding
      *
      * @return string
      */
     public function getEncoding()
     {
         return $this->_encoding;
     }
 
     /**
      * Set encoding
      *
      * @param  string $value
      * @return Zend_Log_Formatter_Xml
      */
     public function setEncoding($value)
     {
         $this->_encoding = (string) $value;
         return $this;
     }
 
     /**
      * Formats data into a single line to be written by the writer.
      *
      * @param  array    $event    event data
      * @return string             formatted line to write to the log
      */
     public function format($event)
     {
         if ($this->_elementMap === null) {
             $dataToInsert = $event;
         } else {
             $dataToInsert = array();
             foreach ($this->_elementMap as $elementName => $fieldKey) {
                 $dataToInsert[$elementName] = $event[$fieldKey];
             }
         }
 
         $enc = $this->getEncoding();
         $dom = new DOMDocument('1.0', $enc);
         $elt = $dom->appendChild(new DOMElement($this->_rootElement));
 
         foreach ($dataToInsert as $key => $value) {
             if (empty($value) 
                 || is_scalar($value) 
                 || (is_object($value) && method_exists($value,'__toString'))
             ) {
                 if($key == "message") {
                     $value = htmlspecialchars($value, ENT_COMPAT, $enc);
                 }
                 $elt->appendChild(new DOMElement($key, (string)$value));
             }
         }
 
         $xml = $dom->saveXML();
         $xml = preg_replace('/<\?xml version="1.0"( encoding="[^\"]*")?\?>\n/u', '', $xml);
 
         return $xml . PHP_EOL;
     }
 }