910 lines
29 KiB
PHP
910 lines
29 KiB
PHP
<?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) 2005-2008 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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/** Zend_Pdf_Page */
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require_once 'Zend/Pdf/Page.php';
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/** Zend_Pdf_Cmap */
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require_once 'Zend/Pdf/Cmap.php';
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/** Zend_Pdf_Font */
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require_once 'Zend/Pdf/Font.php';
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/** Zend_Pdf_Style */
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require_once 'Zend/Pdf/Style.php';
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/** Zend_Pdf_Parser */
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require_once 'Zend/Pdf/Parser.php';
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/** Zend_Pdf_Trailer */
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require_once 'Zend/Pdf/Trailer.php';
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/** Zend_Pdf_Trailer_Generator */
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require_once 'Zend/Pdf/Trailer/Generator.php';
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/** Zend_Pdf_Color */
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require_once 'Zend/Pdf/Color.php';
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/** Zend_Pdf_Color_GrayScale */
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require_once 'Zend/Pdf/Color/GrayScale.php';
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/** Zend_Pdf_Color_Rgb */
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require_once 'Zend/Pdf/Color/Rgb.php';
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/** Zend_Pdf_Color_Cmyk */
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require_once 'Zend/Pdf/Color/Cmyk.php';
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/** Zend_Pdf_Color_Html */
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require_once 'Zend/Pdf/Color/Html.php';
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/** Zend_Pdf_Image */
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require_once 'Zend/Pdf/Resource/Image.php';
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/** Zend_Pdf_Image */
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require_once 'Zend/Pdf/Image.php';
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/** Zend_Pdf_Image_Jpeg */
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require_once 'Zend/Pdf/Resource/Image/Jpeg.php';
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/** Zend_Pdf_Image_Tiff */
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require_once 'Zend/Pdf/Resource/Image/Tiff.php';
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/** Zend_Pdf_Image_Png */
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require_once 'Zend/Pdf/Resource/Image/Png.php';
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/** Zend_Memory */
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require_once 'Zend/Memory.php';
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/**
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* General entity which describes PDF document.
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* It implements document abstraction with a document level operations.
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*
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* Class is used to create new PDF document or load existing document.
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* See details in a class constructor description
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*
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* Class agregates document level properties and entities (pages, bookmarks,
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* document level actions, attachments, form object, etc)
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*
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* @category Zend
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* @package Zend_Pdf
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* @copyright Copyright (c) 2005-2008 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
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{
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/**** Class Constants ****/
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/**
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* Version number of generated PDF documents.
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*/
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const PDF_VERSION = 1.4;
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/**
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* PDF file header.
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*/
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const PDF_HEADER = "%PDF-1.4\n%\xE2\xE3\xCF\xD3\n";
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/**
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* Pages collection
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*
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* @todo implement it as a class, which supports ArrayAccess and Iterator interfaces,
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* to provide incremental parsing and pages tree updating.
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* That will give good performance and memory (PDF size) benefits.
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*
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* @var array - array of Zend_Pdf_Page object
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*/
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public $pages = array();
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/**
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* Document properties
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*
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* It's an associative array with PDF meta information, values may
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* be string, boolean or float.
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* Returned array could be used directly to access, add, modify or remove
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* document properties.
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*
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* Standard document properties: Title (must be set for PDF/X documents), Author,
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* Subject, Keywords (comma separated list), Creator (the name of the application,
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* that created document, if it was converted from other format), Trapped (must be
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* true, false or null, can not be null for PDF/X documents)
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*
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* @var array
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*/
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public $properties = array();
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/**
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* Original properties set.
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*
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* Used for tracking properties changes
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*
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* @var array
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*/
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protected $_originalProperties = array();
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/**
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* Document level javascript
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*
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* @var string
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*/
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protected $_javaScript = null;
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/**
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* Document named actions
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* "GoTo..." actions, used to refer document parts
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* from outside PDF
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*
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* @var array - array of Zend_Pdf_Action objects
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*/
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protected $_namedActions = array();
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/**
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* Pdf trailer (last or just created)
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*
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* @var Zend_Pdf_Trailer
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*/
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protected $_trailer = null;
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/**
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* PDF objects factory.
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*
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* @var Zend_Pdf_ElementFactory_Interface
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*/
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protected $_objFactory = null;
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/**
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* Memory manager for stream objects
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*
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* @var Zend_Memory_Manager|null
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*/
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protected static $_memoryManager = null;
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/**
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* Pdf file parser.
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* It's not used, but has to be destroyed only with Zend_Pdf object
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*
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* @var Zend_Pdf_Parser
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*/
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protected $_parser;
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/**
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* List of inheritable attributesfor pages tree
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*
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* @var array
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*/
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protected static $_inheritableAttributes = array('Resources', 'MediaBox', 'CropBox', 'Rotate');
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/**
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* Request used memory manager
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*
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* @return Zend_Memory_Manager
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*/
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static public function getMemoryManager()
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{
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if (self::$_memoryManager === null) {
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self::$_memoryManager = Zend_Memory::factory('none');
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}
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return self::$_memoryManager;
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}
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/**
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* Set user defined memory manager
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*
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* @param Zend_Memory_Manager $memoryManager
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*/
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static public function setMemoryManager(Zend_Memory_Manager $memoryManager)
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{
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self::$_memoryManager = $memoryManager;
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}
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/**
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* Create new PDF document from a $source string
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*
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* @param string $source
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* @param integer $revision
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* @return Zend_Pdf
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*/
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public static function parse(&$source = null, $revision = null)
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{
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return new Zend_Pdf($source, $revision);
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}
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/**
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* Load PDF document from a file
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*
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* @param string $source
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* @param integer $revision
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* @return Zend_Pdf
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*/
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public static function load($source = null, $revision = null)
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{
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return new Zend_Pdf($source, $revision, true);
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}
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/**
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* Render PDF document and save it.
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*
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* If $updateOnly is true, then it only appends new section to the end of file.
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*
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* @param string $filename
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* @param boolean $updateOnly
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* @throws Zend_Pdf_Exception
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*/
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public function save($filename, $updateOnly = false)
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{
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if (($file = @fopen($filename, $updateOnly ? 'ab':'wb')) === false ) {
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require_once 'Zend/Pdf/Exception.php';
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throw new Zend_Pdf_Exception( "Can not open '$filename' file for writing." );
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}
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$this->render($updateOnly, $file);
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fclose($file);
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}
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/**
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* Creates or loads PDF document.
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*
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* If $source is null, then it creates a new document.
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*
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* If $source is a string and $load is false, then it loads document
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* from a binary string.
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*
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* If $source is a string and $load is true, then it loads document
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* from a file.
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* $revision used to roll back document to specified version
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* (0 - currtent version, 1 - previous version, 2 - ...)
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*
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* @param string $source - PDF file to load
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* @param integer $revision
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* @throws Zend_Pdf_Exception
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* @return Zend_Pdf
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*/
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public function __construct($source = null, $revision = null, $load = false)
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{
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$this->_objFactory = Zend_Pdf_ElementFactory::createFactory(1);
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if ($source !== null) {
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$this->_parser = new Zend_Pdf_Parser($source, $this->_objFactory, $load);
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$this->_trailer = $this->_parser->getTrailer();
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if ($this->_trailer->Encrypt !== null) {
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require_once 'Zend/Pdf/Exception.php';
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throw new Zend_Pdf_Exception('Encrypted document modification is not supported');
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}
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if ($revision !== null) {
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$this->rollback($revision);
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} else {
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$this->_loadPages($this->_trailer->Root->Pages);
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}
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if ($this->_trailer->Info !== null) {
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$this->properties = $this->_trailer->Info->toPhp();
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if (isset($this->properties['Trapped'])) {
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switch ($this->properties['Trapped']) {
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case 'True':
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$this->properties['Trapped'] = true;
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break;
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case 'False':
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$this->properties['Trapped'] = false;
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break;
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case 'Unknown':
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$this->properties['Trapped'] = null;
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break;
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default:
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// Wrong property value
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// Do nothing
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break;
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}
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}
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$this->_originalProperties = $this->properties;
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}
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} else {
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$trailerDictionary = new Zend_Pdf_Element_Dictionary();
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/**
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* Document id
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*/
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$docId = md5(uniqid(rand(), true)); // 32 byte (128 bit) identifier
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$docIdLow = substr($docId, 0, 16); // first 16 bytes
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$docIdHigh = substr($docId, 16, 16); // second 16 bytes
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$trailerDictionary->ID = new Zend_Pdf_Element_Array();
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$trailerDictionary->ID->items[] = new Zend_Pdf_Element_String_Binary($docIdLow);
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$trailerDictionary->ID->items[] = new Zend_Pdf_Element_String_Binary($docIdHigh);
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$trailerDictionary->Size = new Zend_Pdf_Element_Numeric(0);
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$this->_trailer = new Zend_Pdf_Trailer_Generator($trailerDictionary);
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/**
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* Document catalog indirect object.
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*/
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$docCatalog = $this->_objFactory->newObject(new Zend_Pdf_Element_Dictionary());
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$docCatalog->Type = new Zend_Pdf_Element_Name('Catalog');
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$docCatalog->Version = new Zend_Pdf_Element_Name(Zend_Pdf::PDF_VERSION);
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$this->_trailer->Root = $docCatalog;
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/**
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* Pages container
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*/
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$docPages = $this->_objFactory->newObject(new Zend_Pdf_Element_Dictionary());
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$docPages->Type = new Zend_Pdf_Element_Name('Pages');
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$docPages->Kids = new Zend_Pdf_Element_Array();
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$docPages->Count = new Zend_Pdf_Element_Numeric(0);
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$docCatalog->Pages = $docPages;
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}
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}
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/**
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* Retrive number of revisions.
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*
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* @return integer
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*/
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public function revisions()
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{
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$revisions = 1;
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$currentTrailer = $this->_trailer;
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while ($currentTrailer->getPrev() !== null && $currentTrailer->getPrev()->Root !== null ) {
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$revisions++;
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$currentTrailer = $currentTrailer->getPrev();
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}
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return $revisions++;
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}
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/**
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* Rollback document $steps number of revisions.
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* This method must be invoked before any changes, applied to the document.
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* Otherwise behavior is undefined.
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*
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* @param integer $steps
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*/
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public function rollback($steps)
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{
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for ($count = 0; $count < $steps; $count++) {
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if ($this->_trailer->getPrev() !== null && $this->_trailer->getPrev()->Root !== null) {
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$this->_trailer = $this->_trailer->getPrev();
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} else {
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break;
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}
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}
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$this->_objFactory->setObjectCount($this->_trailer->Size->value);
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// Mark content as modified to force new trailer generation at render time
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$this->_trailer->Root->touch();
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$this->pages = array();
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$this->_loadPages($this->_trailer->Root->Pages);
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}
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/**
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* Load pages recursively
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*
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* @param Zend_Pdf_Element_Reference $pages
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* @param array|null $attributes
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*/
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protected function _loadPages(Zend_Pdf_Element_Reference $pages, $attributes = array())
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{
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if ($pages->getType() != Zend_Pdf_Element::TYPE_DICTIONARY) {
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require_once 'Zend/Pdf/Exception.php';
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throw new Zend_Pdf_Exception('Wrong argument');
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}
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foreach ($pages->getKeys() as $property) {
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if (in_array($property, self::$_inheritableAttributes)) {
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$attributes[$property] = $pages->$property;
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$pages->$property = null;
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}
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}
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foreach ($pages->Kids->items as $child) {
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if ($child->Type->value == 'Pages') {
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$this->_loadPages($child, $attributes);
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} else if ($child->Type->value == 'Page') {
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foreach (self::$_inheritableAttributes as $property) {
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if ($child->$property === null && array_key_exists($property, $attributes)) {
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/**
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* Important note.
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* If any attribute or dependant object is an indirect object, then it's still
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* shared between pages.
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*/
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if ($attributes[$property] instanceof Zend_Pdf_Element_Object) {
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$child->$property = $attributes[$property];
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} else {
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$child->$property = $this->_objFactory->newObject($attributes[$property]);
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}
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}
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}
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$this->pages[] = new Zend_Pdf_Page($child, $this->_objFactory);
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}
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}
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}
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/**
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* Orginize pages to tha pages tree structure.
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*
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* @todo atomatically attach page to the document, if it's not done yet.
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* @todo check, that page is attached to the current document
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*
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* @todo Dump pages as a balanced tree instead of a plain set.
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*/
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protected function _dumpPages()
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{
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$pagesContainer = $this->_trailer->Root->Pages;
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$pagesContainer->touch();
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$pagesContainer->Kids->items->clear();
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foreach ($this->pages as $page ) {
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$page->render($this->_objFactory);
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$pageDictionary = $page->getPageDictionary();
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$pageDictionary->touch();
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$pageDictionary->Parent = $pagesContainer;
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$pagesContainer->Kids->items[] = $pageDictionary;
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}
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$pagesContainer->Count->touch();
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$pagesContainer->Count->value = count($this->pages);
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}
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/**
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* Create page object, attached to the PDF document.
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* Method signatures:
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*
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* 1. Create new page with a specified pagesize.
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* If $factory is null then it will be created and page must be attached to the document to be
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* included into output.
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* ---------------------------------------------------------
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* new Zend_Pdf_Page(string $pagesize);
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* ---------------------------------------------------------
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*
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* 2. Create new page with a specified pagesize (in default user space units).
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* If $factory is null then it will be created and page must be attached to the document to be
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* included into output.
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* ---------------------------------------------------------
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* new Zend_Pdf_Page(numeric $width, numeric $height);
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* ---------------------------------------------------------
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*
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* @param mixed $param1
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* @param mixed $param2
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* @return Zend_Pdf_Page
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*/
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public function newPage($param1, $param2 = null)
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{
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if ($param2 === null) {
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return new Zend_Pdf_Page($param1, $this->_objFactory);
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} else {
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return new Zend_Pdf_Page($param1, $param2, $this->_objFactory);
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}
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}
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/**
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* Return the document-level Metadata
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* or null Metadata stream is not presented
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*
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* @return string
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*/
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public function getMetadata()
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{
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if ($this->_trailer->Root->Metadata !== null) {
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return $this->_trailer->Root->Metadata->value;
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} else {
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return null;
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}
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}
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/**
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* Sets the document-level Metadata (mast be valid XMP document)
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*
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* @param string $metadata
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*/
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public function setMetadata($metadata)
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{
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$metadataObject = $this->_objFactory->newStreamObject($metadata);
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$metadataObject->dictionary->Type = new Zend_Pdf_Element_Name('Metadata');
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$metadataObject->dictionary->Subtype = new Zend_Pdf_Element_Name('XML');
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$this->_trailer->Root->Metadata = $metadataObject;
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$this->_trailer->Root->touch();
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}
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/**
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* Return the document-level JavaScript
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* or null if there is no JavaScript for this document
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*
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* @return string
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*/
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public function getJavaScript()
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{
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return $this->_javaScript;
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}
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/**
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* Return an associative array containing all the named actions in the PDF.
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* Named actions (it's always "GoTo" actions) can be used to reference from outside
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* the PDF, ex: 'http://www.something.com/mydocument.pdf#MyAction'
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*
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* @return array
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*/
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public function getNamedActions()
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{
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return $this->_namedActions;
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}
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|
/**
|
|
* Extract fonts attached to the document
|
|
*
|
|
* returns array of Zend_Pdf_Resource_Font_Extracted objects
|
|
*
|
|
* @return array
|
|
*/
|
|
public function extractFonts()
|
|
{
|
|
$fontResourcesUnique = array();
|
|
foreach ($this->pages as $page) {
|
|
$pageResources = $page->extractResources();
|
|
|
|
if ($pageResources->Font === null) {
|
|
// Page doesn't contain have any font reference
|
|
continue;
|
|
}
|
|
|
|
$fontResources = $pageResources->Font;
|
|
|
|
foreach ($fontResources->getKeys() as $fontResourceName) {
|
|
$fontDictionary = $fontResources->$fontResourceName;
|
|
|
|
if (! ($fontDictionary instanceof Zend_Pdf_Element_Reference ||
|
|
$fontDictionary instanceof Zend_Pdf_Element_Object) ) {
|
|
// Font dictionary has to be an indirect object or object reference
|
|
continue;
|
|
}
|
|
|
|
$fontResourcesUnique[$fontDictionary->toString($this->_objFactory)] = $fontDictionary;
|
|
}
|
|
}
|
|
|
|
$fonts = array();
|
|
require_once 'Zend/Pdf/Exception.php';
|
|
foreach ($fontResourcesUnique as $resourceReference => $fontDictionary) {
|
|
try {
|
|
// Try to extract font
|
|
$extractedFont = new Zend_Pdf_Resource_Font_Extracted($fontDictionary);
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|
|
|
$fonts[$resourceReference] = $extractedFont;
|
|
} catch (Zend_Pdf_Exception $e) {
|
|
if ($e->getMessage() != 'Unsupported font type.') {
|
|
throw $e;
|
|
}
|
|
}
|
|
}
|
|
|
|
return $fonts;
|
|
}
|
|
|
|
/**
|
|
* Extract font attached to the page by specific font name
|
|
*
|
|
* $fontName should be specified in UTF-8 encoding
|
|
*
|
|
* @return Zend_Pdf_Resource_Font_Extracted|null
|
|
*/
|
|
public function extractFont($fontName)
|
|
{
|
|
$fontResourcesUnique = array();
|
|
require_once 'Zend/Pdf/Exception.php';
|
|
foreach ($this->pages as $page) {
|
|
$pageResources = $page->extractResources();
|
|
|
|
if ($pageResources->Font === null) {
|
|
// Page doesn't contain have any font reference
|
|
continue;
|
|
}
|
|
|
|
$fontResources = $pageResources->Font;
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|
|
|
foreach ($fontResources->getKeys() as $fontResourceName) {
|
|
$fontDictionary = $fontResources->$fontResourceName;
|
|
|
|
if (! ($fontDictionary instanceof Zend_Pdf_Element_Reference ||
|
|
$fontDictionary instanceof Zend_Pdf_Element_Object) ) {
|
|
// Font dictionary has to be an indirect object or object reference
|
|
continue;
|
|
}
|
|
|
|
$resourceReference = $fontDictionary->toString($this->_objFactory);
|
|
if (isset($fontResourcesUnique[$resourceReference])) {
|
|
continue;
|
|
} else {
|
|
// Mark resource as processed
|
|
$fontResourcesUnique[$resourceReference] = 1;
|
|
}
|
|
|
|
if ($fontDictionary->BaseFont->value != $fontName) {
|
|
continue;
|
|
}
|
|
|
|
try {
|
|
// Try to extract font
|
|
return new Zend_Pdf_Resource_Font_Extracted($fontDictionary);
|
|
} catch (Zend_Pdf_Exception $e) {
|
|
if ($e->getMessage() != 'Unsupported font type.') {
|
|
throw $e;
|
|
}
|
|
// Continue searhing
|
|
}
|
|
}
|
|
}
|
|
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* Render the completed PDF to a string.
|
|
* If $newSegmentOnly is true, then only appended part of PDF is returned.
|
|
*
|
|
* @param boolean $newSegmentOnly
|
|
* @param resource $outputStream
|
|
* @return string
|
|
* @throws Zend_Pdf_Exception
|
|
*/
|
|
public function render($newSegmentOnly = false, $outputStream = null)
|
|
{
|
|
// Save document properties if necessary
|
|
if ($this->properties != $this->_originalProperties) {
|
|
$docInfo = $this->_objFactory->newObject(new Zend_Pdf_Element_Dictionary());
|
|
|
|
foreach ($this->properties as $key => $value) {
|
|
switch ($key) {
|
|
case 'Trapped':
|
|
switch ($value) {
|
|
case true:
|
|
$docInfo->$key = new Zend_Pdf_Element_Name('True');
|
|
break;
|
|
|
|
case false:
|
|
$docInfo->$key = new Zend_Pdf_Element_Name('False');
|
|
break;
|
|
|
|
case null:
|
|
$docInfo->$key = new Zend_Pdf_Element_Name('Unknown');
|
|
break;
|
|
|
|
default:
|
|
require_once 'Zend/Pdf/Exception.php';
|
|
throw new Zend_Pdf_Exception('Wrong Trapped document property vale: \'' . $value . '\'. Only true, false and null values are allowed.');
|
|
break;
|
|
}
|
|
|
|
case 'CreationDate':
|
|
// break intentionally omitted
|
|
case 'ModDate':
|
|
$docInfo->$key = new Zend_Pdf_Element_String((string)$value);
|
|
break;
|
|
|
|
case 'Title':
|
|
// break intentionally omitted
|
|
case 'Author':
|
|
// break intentionally omitted
|
|
case 'Subject':
|
|
// break intentionally omitted
|
|
case 'Keywords':
|
|
// break intentionally omitted
|
|
case 'Creator':
|
|
// break intentionally omitted
|
|
case 'Producer':
|
|
if (extension_loaded('mbstring') === true) {
|
|
$detected = mb_detect_encoding($value);
|
|
if ($detected !== 'ASCII') {
|
|
$value = chr(254) . chr(255) . mb_convert_encoding($value, 'UTF-16', $detected);
|
|
}
|
|
}
|
|
$docInfo->$key = new Zend_Pdf_Element_String((string)$value);
|
|
break;
|
|
|
|
default:
|
|
// Set property using PDF type based on PHP type
|
|
$docInfo->$key = Zend_Pdf_Element::phpToPdf($value);
|
|
break;
|
|
}
|
|
}
|
|
|
|
$this->_trailer->Info = $docInfo;
|
|
}
|
|
|
|
$this->_dumpPages();
|
|
|
|
// Check, that PDF file was modified
|
|
// File is always modified by _dumpPages() now, but future implementations may eliminate this.
|
|
if (!$this->_objFactory->isModified()) {
|
|
if ($newSegmentOnly) {
|
|
// Do nothing, return
|
|
return '';
|
|
}
|
|
|
|
if ($outputStream === null) {
|
|
return $this->_trailer->getPDFString();
|
|
} else {
|
|
$pdfData = $this->_trailer->getPDFString();
|
|
while ( strlen($pdfData) > 0 && ($byteCount = fwrite($outputStream, $pdfData)) != false ) {
|
|
$pdfData = substr($pdfData, $byteCount);
|
|
}
|
|
|
|
return '';
|
|
}
|
|
}
|
|
|
|
// offset (from a start of PDF file) of new PDF file segment
|
|
$offset = $this->_trailer->getPDFLength();
|
|
// Last Object number in a list of free objects
|
|
$lastFreeObject = $this->_trailer->getLastFreeObject();
|
|
|
|
// Array of cross-reference table subsections
|
|
$xrefTable = array();
|
|
// Object numbers of first objects in each subsection
|
|
$xrefSectionStartNums = array();
|
|
|
|
// Last cross-reference table subsection
|
|
$xrefSection = array();
|
|
// Dummy initialization of the first element (specail case - header of linked list of free objects).
|
|
$xrefSection[] = 0;
|
|
$xrefSectionStartNums[] = 0;
|
|
// Object number of last processed PDF object.
|
|
// Used to manage cross-reference subsections.
|
|
// Initialized by zero (specail case - header of linked list of free objects).
|
|
$lastObjNum = 0;
|
|
|
|
if ($outputStream !== null) {
|
|
if (!$newSegmentOnly) {
|
|
$pdfData = $this->_trailer->getPDFString();
|
|
while ( strlen($pdfData) > 0 && ($byteCount = fwrite($outputStream, $pdfData)) != false ) {
|
|
$pdfData = substr($pdfData, $byteCount);
|
|
}
|
|
}
|
|
} else {
|
|
$pdfSegmentBlocks = ($newSegmentOnly) ? array() : array($this->_trailer->getPDFString());
|
|
}
|
|
|
|
// Iterate objects to create new reference table
|
|
foreach ($this->_objFactory->listModifiedObjects() as $updateInfo) {
|
|
$objNum = $updateInfo->getObjNum();
|
|
|
|
if ($objNum - $lastObjNum != 1) {
|
|
// Save cross-reference table subsection and start new one
|
|
$xrefTable[] = $xrefSection;
|
|
$xrefSection = array();
|
|
$xrefSectionStartNums[] = $objNum;
|
|
}
|
|
|
|
if ($updateInfo->isFree()) {
|
|
// Free object cross-reference table entry
|
|
$xrefSection[] = sprintf("%010d %05d f \n", $lastFreeObject, $updateInfo->getGenNum());
|
|
$lastFreeObject = $objNum;
|
|
} else {
|
|
// In-use object cross-reference table entry
|
|
$xrefSection[] = sprintf("%010d %05d n \n", $offset, $updateInfo->getGenNum());
|
|
|
|
$pdfBlock = $updateInfo->getObjectDump();
|
|
$offset += strlen($pdfBlock);
|
|
|
|
if ($outputStream === null) {
|
|
$pdfSegmentBlocks[] = $pdfBlock;
|
|
} else {
|
|
while ( strlen($pdfBlock) > 0 && ($byteCount = fwrite($outputStream, $pdfBlock)) != false ) {
|
|
$pdfBlock = substr($pdfBlock, $byteCount);
|
|
}
|
|
}
|
|
}
|
|
$lastObjNum = $objNum;
|
|
}
|
|
// Save last cross-reference table subsection
|
|
$xrefTable[] = $xrefSection;
|
|
|
|
// Modify first entry (specail case - header of linked list of free objects).
|
|
$xrefTable[0][0] = sprintf("%010d 65535 f \n", $lastFreeObject);
|
|
|
|
$xrefTableStr = "xref\n";
|
|
foreach ($xrefTable as $sectId => $xrefSection) {
|
|
$xrefTableStr .= sprintf("%d %d \n", $xrefSectionStartNums[$sectId], count($xrefSection));
|
|
foreach ($xrefSection as $xrefTableEntry) {
|
|
$xrefTableStr .= $xrefTableEntry;
|
|
}
|
|
}
|
|
|
|
$this->_trailer->Size->value = $this->_objFactory->getObjectCount();
|
|
|
|
$pdfBlock = $xrefTableStr
|
|
. $this->_trailer->toString()
|
|
. "startxref\n" . $offset . "\n"
|
|
. "%%EOF\n";
|
|
|
|
if ($outputStream === null) {
|
|
$pdfSegmentBlocks[] = $pdfBlock;
|
|
|
|
return implode('', $pdfSegmentBlocks);
|
|
} else {
|
|
while ( strlen($pdfBlock) > 0 && ($byteCount = fwrite($outputStream, $pdfBlock)) != false ) {
|
|
$pdfBlock = substr($pdfBlock, $byteCount);
|
|
}
|
|
|
|
return '';
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Set the document-level JavaScript
|
|
*
|
|
* @param string $javascript
|
|
*/
|
|
public function setJavaScript($javascript)
|
|
{
|
|
$this->_javaScript = $javascript;
|
|
}
|
|
|
|
|
|
/**
|
|
* Convert date to PDF format (it's close to ASN.1 (Abstract Syntax Notation
|
|
* One) defined in ISO/IEC 8824).
|
|
*
|
|
* @todo This really isn't the best location for this method. It should
|
|
* probably actually exist as Zend_Pdf_Element_Date or something like that.
|
|
*
|
|
* @todo Address the following E_STRICT issue:
|
|
* PHP Strict Standards: date(): It is not safe to rely on the system's
|
|
* timezone settings. Please use the date.timezone setting, the TZ
|
|
* environment variable or the date_default_timezone_set() function. In
|
|
* case you used any of those methods and you are still getting this
|
|
* warning, you most likely misspelled the timezone identifier.
|
|
*
|
|
* @param integer $timestamp (optional) If omitted, uses the current time.
|
|
* @return string
|
|
*/
|
|
public static function pdfDate($timestamp = null)
|
|
{
|
|
if ($timestamp === null) {
|
|
$date = date('\D\:YmdHisO');
|
|
} else {
|
|
$date = date('\D\:YmdHisO', $timestamp);
|
|
}
|
|
return substr_replace($date, '\'', -2, 0) . '\'';
|
|
}
|
|
|
|
}
|