diff -r bd595ad770fc -r 1c2f13fd785c web/enmi/Zend/Pdf/Element/Reference.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/web/enmi/Zend/Pdf/Element/Reference.php	Thu Jan 20 19:30:54 2011 +0100
@@ -0,0 +1,303 @@
+<?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: Reference.php 22797 2010-08-06 15:02:12Z alexander $
+ */
+
+
+/** Internally used classes */
+require_once 'Zend/Pdf/Element/Null.php';
+
+
+/** Zend_Pdf_Element */
+require_once 'Zend/Pdf/Element.php';
+
+/**
+ * PDF file 'reference' 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_Reference extends Zend_Pdf_Element
+{
+    /**
+     * Object value
+     * The reference to the object
+     *
+     * @var mixed
+     */
+    private $_ref;
+
+    /**
+     * Object number within PDF file
+     *
+     * @var integer
+     */
+    private $_objNum;
+
+    /**
+     * Generation number
+     *
+     * @var integer
+     */
+    private $_genNum;
+
+    /**
+     * Reference context
+     *
+     * @var Zend_Pdf_Element_Reference_Context
+     */
+    private $_context;
+
+
+    /**
+     * Reference to the factory.
+     *
+     * It's the same as referenced object factory, but we save it here to avoid
+     * unnecessary dereferencing, whech can produce cascade dereferencing and parsing.
+     * The same for duplication of getFactory() function. It can be processed by __call()
+     * method, but we catch it here.
+     *
+     * @var Zend_Pdf_ElementFactory
+     */
+    private $_factory;
+
+    /**
+     * Object constructor:
+     *
+     * @param integer $objNum
+     * @param integer $genNum
+     * @param Zend_Pdf_Element_Reference_Context $context
+     * @param Zend_Pdf_ElementFactory $factory
+     * @throws Zend_Pdf_Exception
+     */
+    public function __construct($objNum, $genNum = 0, Zend_Pdf_Element_Reference_Context $context, Zend_Pdf_ElementFactory $factory)
+    {
+        if ( !(is_integer($objNum) && $objNum > 0) ) {
+            require_once 'Zend/Pdf/Exception.php';
+            throw new Zend_Pdf_Exception('Object number must be positive integer');
+        }
+        if ( !(is_integer($genNum) && $genNum >= 0) ) {
+            require_once 'Zend/Pdf/Exception.php';
+            throw new Zend_Pdf_Exception('Generation number must be non-negative integer');
+        }
+
+        $this->_objNum  = $objNum;
+        $this->_genNum  = $genNum;
+        $this->_ref     = null;
+        $this->_context = $context;
+        $this->_factory = $factory;
+    }
+
+    /**
+     * Check, that object is generated by specified factory
+     *
+     * @return Zend_Pdf_ElementFactory
+     */
+    public function getFactory()
+    {
+        return $this->_factory;
+    }
+
+
+    /**
+     * Return type of the element.
+     *
+     * @return integer
+     */
+    public function getType()
+    {
+        if ($this->_ref === null) {
+            $this->_dereference();
+        }
+
+        return $this->_ref->getType();
+    }
+
+
+    /**
+     * Return reference to the object
+     *
+     * @param Zend_Pdf_Factory $factory
+     * @return string
+     */
+    public function toString($factory = null)
+    {
+        if ($factory === null) {
+            $shift = 0;
+        } else {
+            $shift = $factory->getEnumerationShift($this->_factory);
+        }
+
+        return $this->_objNum + $shift . ' ' . $this->_genNum . ' R';
+    }
+
+
+    /**
+     * Dereference.
+     * Take inderect object, take $value member of this object (must be Zend_Pdf_Element),
+     * take reference to the $value member of this object and assign it to
+     * $value member of current PDF Reference object
+     * $obj can be null
+     *
+     * @throws Zend_Pdf_Exception
+     */
+    private function _dereference()
+    {
+        if (($obj = $this->_factory->fetchObject($this->_objNum . ' ' . $this->_genNum)) === null) {
+            $obj = $this->_context->getParser()->getObject(
+                           $this->_context->getRefTable()->getOffset($this->_objNum . ' ' . $this->_genNum . ' R'),
+                           $this->_context
+                                                          );
+        }
+
+        if ($obj === null ) {
+            $this->_ref = new Zend_Pdf_Element_Null();
+            return;
+        }
+
+        if ($obj->toString() != $this->_objNum . ' ' . $this->_genNum . ' R') {
+            require_once 'Zend/Pdf/Exception.php';
+            throw new Zend_Pdf_Exception('Incorrect reference to the object');
+        }
+
+        $this->_ref = $obj;
+    }
+
+    /**
+     * Detach PDF object from the factory (if applicable), clone it and attach to new factory.
+     *
+     * @param Zend_Pdf_ElementFactory $factory  The factory to attach
+     * @param array &$processed  List of already processed indirect objects, used to avoid objects duplication
+     * @param integer $mode  Cloning mode (defines filter for objects cloning)
+     * @returns Zend_Pdf_Element
+     */
+    public function makeClone(Zend_Pdf_ElementFactory $factory, array &$processed, $mode)
+    {
+        if ($this->_ref === null) {
+            $this->_dereference();
+        }
+
+        // This code duplicates code in Zend_Pdf_Element_Object class,
+        // but allows to avoid unnecessary method call in most cases
+        $id = spl_object_hash($this->_ref);
+        if (isset($processed[$id])) {
+            // Do nothing if object is already processed
+            // return it
+            return $processed[$id];
+        }
+
+        return $this->_ref->makeClone($factory, $processed, $mode);
+    }
+
+    /**
+     * Mark object as modified, to include it into new PDF file segment.
+     */
+    public function touch()
+    {
+        if ($this->_ref === null) {
+            $this->_dereference();
+        }
+
+        $this->_ref->touch();
+    }
+
+    /**
+     * Return object, which can be used to identify object and its references identity
+     *
+     * @return Zend_Pdf_Element_Object
+     */
+    public function getObject()
+    {
+        if ($this->_ref === null) {
+            $this->_dereference();
+        }
+
+        return $this->_ref;
+    }
+
+    /**
+     * Get handler
+     *
+     * @param string $property
+     * @return mixed
+     */
+    public function __get($property)
+    {
+        if ($this->_ref === null) {
+            $this->_dereference();
+        }
+
+        return $this->_ref->$property;
+    }
+
+    /**
+     * Set handler
+     *
+     * @param string $property
+     * @param  mixed $value
+     */
+    public function __set($property, $value)
+    {
+        if ($this->_ref === null) {
+            $this->_dereference();
+        }
+
+        $this->_ref->$property = $value;
+    }
+
+    /**
+     * Call handler
+     *
+     * @param string $method
+     * @param array  $args
+     * @return mixed
+     */
+    public function __call($method, $args)
+    {
+        if ($this->_ref === null) {
+            $this->_dereference();
+        }
+
+        return call_user_func_array(array($this->_ref, $method), $args);
+    }
+
+    /**
+     * Clean up resources
+     */
+    public function cleanUp()
+    {
+        $this->_ref = null;
+    }
+
+    /**
+     * Convert PDF element to PHP type.
+     *
+     * @return mixed
+     */
+    public function toPhp()
+    {
+        if ($this->_ref === null) {
+            $this->_dereference();
+        }
+
+        return $this->_ref->toPhp();
+    }
+}