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143 lines
3.5 KiB
143 lines
3.5 KiB
<?php
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/**
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* Zend Framework
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*
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* LICENSE
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*
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* This source file is subject to the new BSD license that is bundled
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* with this package in the file LICENSE.txt.
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* It is also available through the world-wide-web at this URL:
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* http://framework.zend.com/license/new-bsd
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* If you did not receive a copy of the license and are unable to
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* obtain it through the world-wide-web, please send an email
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* to license@zend.com so we can send you a copy immediately.
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*
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* @category Zend
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* @package Zend_Pdf
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* @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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* @version $Id$
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*/
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/** Zend_Pdf_Trailer */
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// require_once 'Zend/Pdf/Trailer.php';
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/**
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* PDF file trailer.
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* Stores and provides access to the trailer parced from a PDF file
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*
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* @package Zend_Pdf
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* @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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*/
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class Zend_Pdf_Trailer_Keeper extends Zend_Pdf_Trailer
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{
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/**
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* Reference context
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*
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* @var Zend_Pdf_Element_Reference_Context
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*/
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private $_context;
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/**
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* Previous trailer
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*
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* @var Zend_Pdf_Trailer
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*/
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private $_prev;
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/**
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* Object constructor
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*
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* @param Zend_Pdf_Element_Dictionary $dict
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* @param Zend_Pdf_Element_Reference_Context $context
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* @param Zend_Pdf_Trailer $prev
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*/
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public function __construct(Zend_Pdf_Element_Dictionary $dict,
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Zend_Pdf_Element_Reference_Context $context,
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Zend_Pdf_Trailer $prev = null)
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{
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parent::__construct($dict);
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$this->_context = $context;
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$this->_prev = $prev;
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}
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/**
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* Setter for $this->_prev
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*
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* @param Zend_Pdf_Trailer_Keeper $prev
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*/
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public function setPrev(Zend_Pdf_Trailer_Keeper $prev)
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{
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$this->_prev = $prev;
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}
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/**
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* Getter for $this->_prev
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*
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* @return Zend_Pdf_Trailer
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*/
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public function getPrev()
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{
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return $this->_prev;
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}
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/**
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* Get length of source PDF
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*
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* @return string
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*/
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public function getPDFLength()
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{
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return $this->_context->getParser()->getLength();
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}
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/**
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* Get PDF String
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*
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* @return string
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*/
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public function getPDFString()
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{
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return $this->_context->getParser()->getString();
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}
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/**
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* Get reference table, which corresponds to the trailer.
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* Proxy to the $_context member methad call
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*
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* @return Zend_Pdf_Element_Reference_Context
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*/
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public function getRefTable()
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{
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return $this->_context->getRefTable();
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}
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/**
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* Get header of free objects list
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* Returns object number of last free object
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*
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* @throws Zend_Pdf_Exception
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* @return integer
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*/
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public function getLastFreeObject()
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{
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try {
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$this->_context->getRefTable()->getNextFree('0 65535 R');
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} catch (Zend_Pdf_Exception $e) {
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if ($e->getMessage() == 'Object not found.') {
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/**
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* Here is work around for some wrong generated PDFs.
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* We have not found reference to the header of free object list,
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* thus we treat it as there are no free objects.
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*/
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return 0;
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}
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throw new Zend_Pdf_Exception($e->getMessage(), $e->getCode(), $e);
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}
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}
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}
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