--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/web/Zend/Pdf/Element/String/Binary.php	Mon Dec 13 18:29:26 2010 +0100
@@ -0,0 +1,98 @@
+<?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) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license    http://framework.zend.com/license/new-bsd     New BSD License
+ * @version    $Id: Binary.php 20096 2010-01-06 02:05:09Z bkarwin $
+ */
+
+
+/** Zend_Pdf_Element_String */
+require_once 'Zend/Pdf/Element/String.php';
+
+
+/**
+ * PDF file 'binary string' element implementation
+ *
+ * @category   Zend
+ * @package    Zend_Pdf
+ * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license    http://framework.zend.com/license/new-bsd     New BSD License
+ */
+class Zend_Pdf_Element_String_Binary extends Zend_Pdf_Element_String
+{
+    /**
+     * Object value
+     *
+     * @var string
+     */
+    public $value;
+
+
+    /**
+     * Escape string according to the PDF rules
+     *
+     * @param string $inStr
+     * @return string
+     */
+    public static function escape($inStr)
+    {
+        return strtoupper(bin2hex($inStr));
+    }
+
+
+    /**
+     * Unescape string according to the PDF rules
+     *
+     * @param string $inStr
+     * @return string
+     */
+    public static function unescape($inStr)
+    {
+        $chunks = array();
+        $offset = 0;
+        $length = 0;
+        while ($offset < strlen($inStr)) {
+            // Collect hexadecimal characters
+            $start = $offset;
+            $offset += strspn($inStr, "0123456789abcdefABCDEF", $offset);
+            $chunks[] = substr($inStr, $start, $offset - $start);
+            $length += strlen(end($chunks));
+
+            // Skip non-hexadecimal characters
+            $offset += strcspn($inStr, "0123456789abcdefABCDEF", $offset);
+        }
+        if ($length % 2 != 0) {
+            // We have odd number of digits.
+            // Final digit is assumed to be '0'
+            $chunks[] = '0';
+        }
+
+        return pack('H*' , implode($chunks));
+    }
+
+
+    /**
+     * Return object as string
+     *
+     * @param Zend_Pdf_Factory $factory
+     * @return string
+     */
+    public function toString($factory = null)
+    {
+        return '<' . self::escape((string)$this->value) . '>';
+    }
+}