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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_Pdf
  * @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_Pdf_Element */
 // require_once 'Zend/Pdf/Element.php';
 
 
 /**
  * PDF file 'name' element implementation
  *
  * @category   Zend
  * @package    Zend_Pdf
  * @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_Pdf_Element_Name extends Zend_Pdf_Element
 {
     /**
      * Object value
      *
      * @var string
      */
     public $value;
 
 
     /**
      * Object constructor
      *
      * @param string $val
      * @throws Zend_Pdf_Exception
      */
     public function __construct($val)
     {
         settype($val, 'string');
         if (strpos($val,"\x00") !== false) {
             // require_once 'Zend/Pdf/Exception.php';
             throw new Zend_Pdf_Exception('Null character is not allowed in PDF Names');
         }
         $this->value   = (string)$val;
     }
 
 
     /**
      * Return type of the element.
      *
      * @return integer
      */
     public function getType()
     {
         return Zend_Pdf_Element::TYPE_NAME;
     }
 
 
     /**
      * Escape string according to the PDF rules
      *
      * @param string $inStr
      * @return string
      */
     public static function escape($inStr)
     {
         $outStr = '';
 
         for ($count = 0; $count < strlen($inStr); $count++) {
             $nextCode = ord($inStr[$count]);
 
             switch ($inStr[$count]) {
                 case '(':
                 // fall through to next case
                 case ')':
                 // fall through to next case
                 case '<':
                 // fall through to next case
                 case '>':
                 // fall through to next case
                 case '[':
                 // fall through to next case
                 case ']':
                 // fall through to next case
                 case '{':
                 // fall through to next case
                 case '}':
                 // fall through to next case
                 case '/':
                 // fall through to next case
                 case '%':
                 // fall through to next case
                 case '\\':
                 // fall through to next case
                 case '#':
                     $outStr .= sprintf('#%02X', $nextCode);
                     break;
 
                 default:
                     if ($nextCode >= 33 && $nextCode <= 126 ) {
                         // Visible ASCII symbol
                         $outStr .= $inStr[$count];
                     } else {
                         $outStr .= sprintf('#%02X', $nextCode);
                     }
             }
 
         }
 
         return $outStr;
     }
 
 
     /**
      * Unescape string according to the PDF rules
      *
      * @param string $inStr
      * @return string
      */
     public static function unescape($inStr)
     {
         $outStr = '';
 
         for ($count = 0; $count < strlen($inStr); $count++) {
             if ($inStr[$count] != '#' )  {
                 $outStr .= $inStr[$count];
             } else {
                 // Escape sequence
                 $outStr .= chr(base_convert(substr($inStr, $count+1, 2), 16, 10 ));
                 $count +=2;
             }
         }
         return $outStr;
     }
 
 
     /**
      * Return object as string
      *
      * @param Zend_Pdf_Factory $factory
      * @return string
      */
     public function toString($factory = null)
     {
         return '/' . self::escape((string)$this->value);
     }
 }